mirror of
https://github.com/AgentSeal/codeburn.git
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cddf5d5a53
The rewritten cost pass charges each session only for the schemas that session loaded, which changes local-only estimates too (on a real corpus the mcp-low-coverage estimate roughly halves). Pin it so the change is deliberate rather than a side effect of the connector split.
1003 lines
39 KiB
TypeScript
1003 lines
39 KiB
TypeScript
import { describe, it, expect, vi } from 'vitest'
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import {
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aggregateMcpCoverage,
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buildOptimizeJsonReport,
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classTotals,
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findingClass,
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detectMcpProfileAdvisor,
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detectMcpToolCoverage,
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estimateMcpSchemaCost,
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runOptimize,
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} from '../src/optimize.js'
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import type {
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ClassifiedTurn,
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ParsedApiCall,
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ProjectSummary,
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SessionSummary,
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TaskCategory,
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TokenUsage,
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} from '../src/types.js'
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// ---------------------------------------------------------------------------
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// Test fixtures
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// ---------------------------------------------------------------------------
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const ZERO_USAGE: TokenUsage = {
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inputTokens: 0,
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outputTokens: 0,
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cacheCreationInputTokens: 0,
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cacheReadInputTokens: 0,
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cachedInputTokens: 0,
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reasoningTokens: 0,
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webSearchRequests: 0,
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}
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function makeCall(opts: {
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tools?: string[]
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cacheCreation?: number
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cacheRead?: number
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cost?: number
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} = {}): ParsedApiCall {
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const tools = opts.tools ?? []
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return {
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provider: 'claude',
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model: 'Opus 4.7',
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usage: {
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...ZERO_USAGE,
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cacheCreationInputTokens: opts.cacheCreation ?? 0,
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cacheReadInputTokens: opts.cacheRead ?? 0,
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},
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costUSD: opts.cost ?? 0,
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tools,
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mcpTools: tools.filter(t => t.startsWith('mcp__')),
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skills: [],
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hasAgentSpawn: false,
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hasPlanMode: false,
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speed: 'standard',
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timestamp: '2026-05-04T00:00:00Z',
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bashCommands: [],
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deduplicationKey: 'k',
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}
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}
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function makeTurn(calls: ParsedApiCall[]): ClassifiedTurn {
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return {
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userMessage: '',
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assistantCalls: calls,
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timestamp: '2026-05-04T00:00:00Z',
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sessionId: 's1',
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category: 'coding',
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retries: 0,
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hasEdits: false,
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}
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}
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function makeSession(opts: {
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sessionId?: string
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inventory?: string[]
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turns?: ClassifiedTurn[]
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mcpBreakdown?: Record<string, { calls: number }>
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}): SessionSummary {
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const turns = opts.turns ?? []
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const apiCalls = turns.reduce((s, t) => s + t.assistantCalls.length, 0)
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const emptyCategoryBreakdown = {} as Record<TaskCategory, { turns: number; costUSD: number; retries: number; editTurns: number; oneShotTurns: number }>
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return {
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sessionId: opts.sessionId ?? 's1',
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project: 'p',
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firstTimestamp: '2026-05-04T00:00:00Z',
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lastTimestamp: '2026-05-04T00:00:00Z',
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totalCostUSD: 0,
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totalInputTokens: 0,
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totalOutputTokens: 0,
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totalCacheReadTokens: 0,
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totalCacheWriteTokens: 0,
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apiCalls,
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turns,
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modelBreakdown: {},
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toolBreakdown: {},
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mcpBreakdown: opts.mcpBreakdown ?? {},
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bashBreakdown: {},
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categoryBreakdown: emptyCategoryBreakdown,
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skillBreakdown: {},
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...(opts.inventory ? { mcpInventory: opts.inventory } : {}),
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}
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}
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function project(sessions: SessionSummary[]): ProjectSummary {
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return projectNamed('p', sessions)
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}
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function projectNamed(name: string, sessions: SessionSummary[]): ProjectSummary {
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return {
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project: name,
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projectPath: `/tmp/${name}`,
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sessions,
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totalCostUSD: 0,
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totalApiCalls: sessions.reduce((s, ses) => s + ses.apiCalls, 0),
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}
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}
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// ---------------------------------------------------------------------------
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// aggregateMcpCoverage
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// ---------------------------------------------------------------------------
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describe('aggregateMcpCoverage', () => {
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it('returns empty list when no session has MCP inventory', () => {
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const projects = [project([makeSession({})])]
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expect(aggregateMcpCoverage(projects)).toEqual([])
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})
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it('reports per-server tools available, invoked, and unused', () => {
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const inventory = [
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'mcp__hf__hub_repo_search',
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'mcp__hf__paper_search',
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'mcp__hf__hf_doc_search',
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]
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const turns = [
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makeTurn([makeCall({ tools: ['mcp__hf__hub_repo_search'] })]),
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]
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const sessions = [
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makeSession({ inventory, turns, mcpBreakdown: { hf: { calls: 1 } } }),
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]
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const result = aggregateMcpCoverage([project(sessions)])
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expect(result).toHaveLength(1)
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expect(result[0]!.server).toBe('hf')
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expect(result[0]!.toolsAvailable).toBe(3)
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expect(result[0]!.toolsInvoked).toBe(1)
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expect(result[0]!.unusedTools).toEqual([
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'mcp__hf__hf_doc_search',
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'mcp__hf__paper_search',
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])
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expect(result[0]!.coverageRatio).toBeCloseTo(1 / 3, 5)
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expect(result[0]!.invocations).toBe(1)
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expect(result[0]!.loadedSessions).toBe(1)
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})
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it('unions inventory across multiple sessions for the same server', () => {
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const sessions = [
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makeSession({ sessionId: 'a', inventory: ['mcp__x__a', 'mcp__x__b'] }),
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makeSession({ sessionId: 'b', inventory: ['mcp__x__b', 'mcp__x__c'] }),
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]
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const result = aggregateMcpCoverage([project(sessions)])
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expect(result[0]!.toolsAvailable).toBe(3)
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expect(result[0]!.loadedSessions).toBe(2)
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})
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it('separates servers with similar names', () => {
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const sessions = [
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makeSession({ inventory: ['mcp__hf__a', 'mcp__hugface__a'] }),
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]
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const result = aggregateMcpCoverage([project(sessions)])
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expect(result.map(r => r.server).sort()).toEqual(['hf', 'hugface'])
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})
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it('skips invocations without inventory (foreign server, no inventory observed)', () => {
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// A server can show up only via a call. We still report it so the
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// operator knows it was invoked, but coverage is 0/0 and it is not a
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// candidate for the unused-coverage finding.
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const turns = [makeTurn([makeCall({ tools: ['mcp__ghost__t1'] })])]
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const sessions = [
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makeSession({ turns, mcpBreakdown: { ghost: { calls: 1 } } }),
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]
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const result = aggregateMcpCoverage([project(sessions)])
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// No inventory entry -> aggregator drops the server from the report
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// because we cannot reason about coverage without an inventory baseline.
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expect(result).toEqual([])
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})
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})
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// ---------------------------------------------------------------------------
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// estimateMcpSchemaCost — cache-aware accounting
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// ---------------------------------------------------------------------------
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describe('estimateMcpSchemaCost', () => {
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it('charges first cacheCreation turn at full price, subsequent turns at cache-read', () => {
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const turns = [
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makeTurn([makeCall({ cacheCreation: 50_000 })]), // first turn: write
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makeTurn([makeCall({ cacheRead: 60_000 })]), // ongoing: read
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makeTurn([makeCall({ cacheRead: 60_000 })]),
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]
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const sessions = [makeSession({
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inventory: Array.from({ length: 30 }, (_, i) => `mcp__svc__t${i}`),
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turns,
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mcpBreakdown: { svc: { calls: 0 } },
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})]
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// 30 unused tools * 400 token estimate = 12_000 schema tokens
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// cap by call cache buckets so we never overclaim
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const cost = estimateMcpSchemaCost(30, [project(sessions)], 'svc')
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expect(cost.cacheWriteTokens).toBe(12_000) // capped by 50k creation, 12k schema fits
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expect(cost.cacheReadTokens).toBe(24_000) // 12k + 12k across two ongoing turns
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// effective = write * 1.25 + read * 0.10 (cache pricing)
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expect(cost.effectiveInputTokens).toBeCloseTo(12_000 * 1.25 + 24_000 * 0.10, 5)
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})
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it('caps by available cache bucket so we never overclaim', () => {
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const turns = [makeTurn([makeCall({ cacheCreation: 1_000 })])]
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const sessions = [makeSession({
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inventory: Array.from({ length: 30 }, (_, i) => `mcp__svc__t${i}`),
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turns,
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mcpBreakdown: { svc: { calls: 0 } },
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})]
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// 30*400 = 12k schema tokens, but the call only had 1k cache-creation,
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// so we should not claim more than 1k of overhead for that turn.
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const cost = estimateMcpSchemaCost(30, [project(sessions)], 'svc')
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expect(cost.cacheWriteTokens).toBe(1_000)
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})
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it('returns zero when no unused tools', () => {
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const sessions = [makeSession({
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inventory: ['mcp__svc__t1'],
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turns: [makeTurn([makeCall({ cacheCreation: 5000 })])],
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})]
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const cost = estimateMcpSchemaCost(0, [project(sessions)], 'svc')
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expect(cost).toEqual({ cacheWriteTokens: 0, cacheReadTokens: 0, effectiveInputTokens: 0 })
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})
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it('counts cache write AND cache read on the same call', () => {
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// A long session can have a cache rebuild mid-stream where one call
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// reports both buckets. The estimator must charge both, not skip the
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// read because of the write.
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const turns = [makeTurn([
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makeCall({ cacheCreation: 50_000, cacheRead: 30_000 }),
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])]
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const sessions = [makeSession({
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inventory: Array.from({ length: 30 }, (_, i) => `mcp__svc__t${i}`),
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turns,
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mcpBreakdown: { svc: { calls: 0 } },
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})]
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const cost = estimateMcpSchemaCost(30, [project(sessions)], 'svc')
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expect(cost.cacheWriteTokens).toBe(12_000) // capped at 50k creation
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expect(cost.cacheReadTokens).toBe(12_000) // capped at 30k read
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})
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it('counts every cache rebuild, not just the first one', () => {
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// Sessions that span more than 5 minutes can rebuild the cache
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// multiple times. The estimator should treat every cacheCreation
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// bucket as another write.
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const turns = [makeTurn([
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makeCall({ cacheCreation: 50_000 }),
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makeCall({ cacheCreation: 50_000 }), // rebuild after cache TTL
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makeCall({ cacheRead: 60_000 }),
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])]
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const sessions = [makeSession({
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inventory: Array.from({ length: 30 }, (_, i) => `mcp__svc__t${i}`),
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turns,
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mcpBreakdown: { svc: { calls: 0 } },
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})]
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const cost = estimateMcpSchemaCost(30, [project(sessions)], 'svc')
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expect(cost.cacheWriteTokens).toBe(24_000) // both rebuilds counted
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expect(cost.cacheReadTokens).toBe(12_000)
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})
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it('skips sessions where the server was never loaded', () => {
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const turns = [makeTurn([makeCall({ cacheCreation: 100_000 })])]
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const sessions = [makeSession({
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inventory: ['mcp__other__t1'],
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turns,
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})]
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const cost = estimateMcpSchemaCost(10, [project(sessions)], 'svc')
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expect(cost.cacheWriteTokens).toBe(0)
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})
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it('requires observed inventory for the server, not just invocations', () => {
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// Session invoked the server (mcpBreakdown set, mcpTools called) but
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// never reported a deferred_tools_delta for it. Cost should be 0 to
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// stay consistent with aggregateMcpCoverage's loadedSessions rule.
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const turns = [makeTurn([
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makeCall({ tools: ['mcp__svc__t1'], cacheCreation: 100_000 }),
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])]
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const sessions = [makeSession({
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// No inventory at all
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turns,
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mcpBreakdown: { svc: { calls: 1 } },
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})]
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const cost = estimateMcpSchemaCost(10, [project(sessions)], 'svc')
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expect(cost.cacheWriteTokens).toBe(0)
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expect(cost.cacheReadTokens).toBe(0)
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})
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it('caps combined unused-schema budget across multiple flagged servers', () => {
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// Two flagged servers, each with 30 unused tools (12k schema each =
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// 24k combined). One call has a 50k cache-creation bucket. The
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// combined cap means total write tokens reported is min(24k, 50k) =
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// 24k, not 24k + 24k = 48k.
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const inventory = [
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...Array.from({ length: 30 }, (_, i) => `mcp__a__t${i}`),
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...Array.from({ length: 30 }, (_, i) => `mcp__b__t${i}`),
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]
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const turns = [makeTurn([makeCall({ cacheCreation: 50_000 })])]
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const sessions = [makeSession({ inventory, turns })]
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const cost = estimateMcpSchemaCost(
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{ a: 30, b: 30 },
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[project(sessions)],
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['a', 'b'],
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)
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expect(cost.cacheWriteTokens).toBe(24_000)
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})
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it('does not count a duplicated server identifier twice', () => {
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const inventory = Array.from({ length: 20 }, (_, i) => `mcp__svc__t${i}`)
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const sessions = [makeSession({
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inventory,
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turns: [makeTurn([makeCall({ cacheCreation: 50_000 })])],
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})]
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const cost = estimateMcpSchemaCost(
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{ svc: 20 },
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[project(sessions)],
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['svc', 'svc'],
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)
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expect(cost.cacheWriteTokens).toBe(8_000)
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expect(cost.effectiveInputTokens).toBe(10_000)
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})
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it('still works with the single-server signature (backward compat)', () => {
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const turns = [makeTurn([makeCall({ cacheCreation: 50_000 })])]
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const sessions = [makeSession({
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inventory: Array.from({ length: 30 }, (_, i) => `mcp__svc__t${i}`),
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turns,
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})]
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const cost = estimateMcpSchemaCost(30, [project(sessions)], 'svc')
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expect(cost.cacheWriteTokens).toBe(12_000)
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})
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})
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// ---------------------------------------------------------------------------
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// detectMcpToolCoverage — finding emission with thresholds
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// ---------------------------------------------------------------------------
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describe('detectMcpToolCoverage', () => {
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it('returns null when no inventory exists at all', () => {
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expect(detectMcpToolCoverage([project([makeSession({})])])).toBeNull()
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})
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it('keeps claude.ai connector evidence but emits manual guidance instead of a local remove command', () => {
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const server = 'claude_ai_Netlify'
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const inventory = Array.from({ length: 20 }, (_, i) => `mcp__${server}__t${i}`)
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const turns = [makeTurn([makeCall({ cacheCreation: 50_000 })])]
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const sessions = [
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makeSession({ sessionId: 'a', inventory, turns }),
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makeSession({ sessionId: 'b', inventory, turns }),
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]
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const finding = detectMcpToolCoverage([project(sessions)])
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expect(finding).not.toBeNull()
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expect(finding!.tokensSaved).toBe(20_000)
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// Keep the transcript namespace as evidence, but name the connector the
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// way users actually see it in /mcp and claude.ai Settings.
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expect(finding!.explanation).toContain(server)
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expect(finding!.explanation).toContain('claude.ai Netlify')
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expect(finding!.explanation).toContain('/mcp')
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expect(finding!.explanation).toContain('claude.ai Settings > Connectors')
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expect(finding!.fix.type).toBe('paste')
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if (finding!.fix.type === 'paste') {
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expect(finding!.fix.destination).toBe('manual')
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expect(finding!.fix.text).toContain('/mcp')
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expect(finding!.fix.text).toContain('claude.ai Netlify')
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expect(finding!.fix.text).not.toContain(server)
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expect(finding!.fix.text).toContain('claude.ai Settings > Connectors')
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}
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expect(JSON.stringify(finding)).not.toContain('claude mcp remove')
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expect(finding!.apply).toBeUndefined()
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})
|
||
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it('renders connector-only remediation as a manual action, never an Ask Claude prompt', async () => {
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||
const server = 'claude_ai_Google_Calendar'
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const inventory = Array.from({ length: 20 }, (_, i) => `mcp__${server}__t${i}`)
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||
const turns = [makeTurn([makeCall({ cacheCreation: 50_000 })])]
|
||
const projects = [project([
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||
makeSession({ sessionId: 'a', inventory, turns }),
|
||
makeSession({ sessionId: 'b', inventory, turns }),
|
||
])]
|
||
const log = vi.spyOn(console, 'log').mockImplementation(() => undefined)
|
||
|
||
try {
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||
await runOptimize(projects, 'Test period')
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||
const output = log.mock.calls.map(args => args.join(' ')).join('\n')
|
||
expect(output).toContain('Manual action')
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||
expect(output).toContain('claude.ai Google Calendar')
|
||
expect(output).not.toContain('Ask Claude in the current session')
|
||
} finally {
|
||
log.mockRestore()
|
||
}
|
||
})
|
||
|
||
it('keeps the public optimize JSON envelope while marking connector guidance manual', () => {
|
||
const server = 'claude_ai_Slack'
|
||
const coverage = [{
|
||
server,
|
||
toolsAvailable: 20,
|
||
toolsInvoked: 0,
|
||
unusedTools: Array.from({ length: 20 }, (_, i) => `mcp__${server}__t${i}`),
|
||
invocations: 0,
|
||
loadedSessions: 2,
|
||
coverageRatio: 0,
|
||
}]
|
||
const finding = detectMcpToolCoverage([], coverage)!
|
||
|
||
const report = buildOptimizeJsonReport([], 'Test period', {
|
||
findings: [finding],
|
||
costRate: 0,
|
||
healthScore: 90,
|
||
healthGrade: 'A',
|
||
})
|
||
|
||
expect(report.findings[0]).toMatchObject({
|
||
id: 'mcp-low-coverage',
|
||
tokensSaved: 0,
|
||
fix: {
|
||
type: 'paste',
|
||
destination: 'manual',
|
||
text: expect.stringContaining('claude.ai Slack'),
|
||
},
|
||
})
|
||
expect(report.findings[0]).not.toHaveProperty('apply')
|
||
expect(report.findings[0]).not.toHaveProperty('applyTokensSaved')
|
||
expect(report.findings[0]).not.toHaveProperty('applyTokensSavedByServer')
|
||
expect(report.findings[0]).not.toHaveProperty('manualFollowUp')
|
||
})
|
||
|
||
it('intersects globally unused tool identities with each session inventory', () => {
|
||
const server = 'filesystem'
|
||
const coverage = [{
|
||
server,
|
||
toolsAvailable: 20,
|
||
toolsInvoked: 0,
|
||
unusedTools: Array.from({ length: 20 }, (_, i) => `mcp__${server}__t${i}`),
|
||
invocations: 0,
|
||
loadedSessions: 2,
|
||
coverageRatio: 0,
|
||
}]
|
||
const sessions = [5, 20].map((count, index) => makeSession({
|
||
sessionId: `s${index}`,
|
||
inventory: Array.from({ length: count }, (_, i) => `mcp__${server}__t${i}`),
|
||
turns: [makeTurn([makeCall({ cacheCreation: 50_000 })])],
|
||
}))
|
||
|
||
const finding = detectMcpToolCoverage([project(sessions)], coverage)
|
||
|
||
// 5*400 and 20*400, each at 1.25x cache-write pricing.
|
||
expect(finding).toMatchObject({ tokensSaved: 12_500 })
|
||
expect(finding!.applyTokensSavedByServer?.filesystem).toBe(12_500)
|
||
})
|
||
|
||
it('conserves simultaneous cache-write and cache-read buckets with fractional shares', () => {
|
||
const inventory = [
|
||
...Array.from({ length: 15 }, (_, i) => `mcp__filesystem__t${i}`),
|
||
...Array.from({ length: 11 }, (_, i) => `mcp__claude_ai_Slack__t${i}`),
|
||
]
|
||
const coverage: McpServerCoverage[] = [
|
||
{
|
||
server: 'filesystem', toolsAvailable: 15, toolsInvoked: 0,
|
||
unusedTools: inventory.slice(0, 15), invocations: 0, loadedSessions: 2, coverageRatio: 0,
|
||
},
|
||
{
|
||
server: 'claude_ai_Slack', toolsAvailable: 11, toolsInvoked: 0,
|
||
unusedTools: inventory.slice(15), invocations: 0, loadedSessions: 2, coverageRatio: 0,
|
||
},
|
||
]
|
||
// Duplicate inventory entries must not increase the schema share.
|
||
const sessionInventory = [...inventory, inventory[0]!, inventory[15]!]
|
||
const sessions = ['a', 'b'].map(sessionId => makeSession({
|
||
sessionId,
|
||
inventory: sessionInventory,
|
||
turns: [makeTurn([makeCall({ cacheCreation: 5_001, cacheRead: 3_333 })])],
|
||
}))
|
||
|
||
const finding = detectMcpToolCoverage([project(sessions)], coverage)!
|
||
const total = 2 * (5_001 * 1.25 + 3_333 * 0.10)
|
||
const local = total * (15 / 26)
|
||
|
||
expect(finding.tokensSaved).toBe(Math.round(total))
|
||
expect(finding.applyTokensSaved).toBe(Math.round(local))
|
||
expect(finding.applyTokensSavedByServer?.filesystem).toBeCloseTo(local, 8)
|
||
})
|
||
|
||
it('pluralises manual guidance when only claude.ai connectors are flagged', () => {
|
||
const coverage = ['claude_ai_Slack', 'claude_ai_Google_Calendar'].map(server => ({
|
||
server,
|
||
toolsAvailable: 20,
|
||
toolsInvoked: 0,
|
||
unusedTools: Array.from({ length: 20 }, (_, i) => `mcp__${server}__t${i}`),
|
||
invocations: 0,
|
||
loadedSessions: 2,
|
||
coverageRatio: 0,
|
||
}))
|
||
|
||
const finding = detectMcpToolCoverage([], coverage)
|
||
|
||
expect(finding).not.toBeNull()
|
||
expect(finding!.fix).toMatchObject({
|
||
type: 'paste',
|
||
destination: 'manual',
|
||
label: 'Manage the underused claude.ai connectors where they load:',
|
||
})
|
||
if (finding!.fix.type === 'paste') {
|
||
expect(finding!.fix.text).toContain('manage them in claude.ai Settings > Connectors')
|
||
}
|
||
expect(finding!.apply).toBeUndefined()
|
||
})
|
||
|
||
it('does not flag a server with healthy coverage', () => {
|
||
const inventory = Array.from({ length: 20 }, (_, i) => `mcp__svc__t${i}`)
|
||
const turns = [makeTurn(
|
||
Array.from({ length: 8 }, (_, i) => makeCall({ tools: [`mcp__svc__t${i}`] })),
|
||
)]
|
||
const sessions = [
|
||
makeSession({ sessionId: 'a', inventory, turns }),
|
||
makeSession({ sessionId: 'b', inventory, turns }),
|
||
]
|
||
// 8/20 = 40% coverage, above the 20% threshold -> no finding
|
||
expect(detectMcpToolCoverage([project(sessions)])).toBeNull()
|
||
})
|
||
|
||
it('does not flag a server with too few tools (signal too noisy)', () => {
|
||
// Below MCP_COVERAGE_MIN_TOOLS=10
|
||
const inventory = ['mcp__svc__a', 'mcp__svc__b']
|
||
const sessions = [
|
||
makeSession({ sessionId: 'a', inventory }),
|
||
makeSession({ sessionId: 'b', inventory }),
|
||
]
|
||
expect(detectMcpToolCoverage([project(sessions)])).toBeNull()
|
||
})
|
||
|
||
it('does not flag if seen in only one session (insufficient evidence)', () => {
|
||
const inventory = Array.from({ length: 20 }, (_, i) => `mcp__svc__t${i}`)
|
||
const sessions = [makeSession({ inventory })]
|
||
expect(detectMcpToolCoverage([project(sessions)])).toBeNull()
|
||
})
|
||
|
||
it('flags a large server with low coverage across multiple sessions', () => {
|
||
const inventory = Array.from({ length: 30 }, (_, i) => `mcp__hf__t${i}`)
|
||
const turns = [makeTurn([
|
||
makeCall({ tools: ['mcp__hf__t0'], cacheCreation: 100_000 }),
|
||
])]
|
||
const sessions = [
|
||
makeSession({ sessionId: 'a', inventory, turns, mcpBreakdown: { hf: { calls: 1 } } }),
|
||
makeSession({ sessionId: 'b', inventory, turns, mcpBreakdown: { hf: { calls: 1 } } }),
|
||
]
|
||
const finding = detectMcpToolCoverage([project(sessions)])
|
||
expect(finding).not.toBeNull()
|
||
expect(finding!.title).toContain('1 MCP server')
|
||
expect(finding!.title).toContain('low tool coverage')
|
||
expect(finding!.explanation).toContain('hf')
|
||
expect(finding!.explanation).toContain('1/30')
|
||
expect(finding!.fix.type).toBe('command')
|
||
expect((finding!.fix as { text: string }).text).toContain("claude mcp remove 'hf'")
|
||
expect(finding!.apply).toEqual({ kind: 'mcp-remove', servers: ['hf'] })
|
||
expect(finding!.tokensSaved).toBeGreaterThan(0)
|
||
})
|
||
|
||
it('keeps mixed connector guidance visible while making only the local server executable', () => {
|
||
const inventory = ['filesystem', 'claude_ai_Slack'].flatMap(server =>
|
||
Array.from({ length: 20 }, (_, i) => `mcp__${server}__t${i}`),
|
||
)
|
||
const sessions: SessionSummary[] = [
|
||
makeSession({ sessionId: 'mixed-a', inventory, turns: [makeTurn([makeCall({ cacheCreation: 50_000 })])] }),
|
||
makeSession({ sessionId: 'mixed-b', inventory, turns: [makeTurn([makeCall({ cacheCreation: 50_000 })])] }),
|
||
]
|
||
|
||
const finding = detectMcpToolCoverage([project(sessions)])
|
||
|
||
expect(finding).not.toBeNull()
|
||
// The finding describes both opportunities: 40 unused tool schemas across
|
||
// two sessions = 40K effective tokens. The automatic mutation owns only
|
||
// the 20 local schemas = 20K; the connector portion remains manual.
|
||
expect(finding).toMatchObject({ tokensSaved: 40_000, applyTokensSaved: 20_000 })
|
||
expect(finding!.explanation).toContain('claude_ai_Slack')
|
||
expect(finding!.explanation).toContain('/mcp')
|
||
expect(finding!.explanation).toContain('claude.ai Settings > Connectors')
|
||
expect(finding!.fix).toEqual({
|
||
type: 'command',
|
||
label: 'Remove the underused local server, or trim its tools in your MCP config:',
|
||
text: "claude mcp remove 'filesystem'",
|
||
})
|
||
expect(finding!.apply).toEqual({ kind: 'mcp-remove', servers: ['filesystem'] })
|
||
})
|
||
|
||
it('attributes a capped mixed cache bucket proportionally to the local action', () => {
|
||
const inventory = ['filesystem', 'claude_ai_Slack'].flatMap(server =>
|
||
Array.from({ length: 20 }, (_, i) => `mcp__${server}__t${i}`),
|
||
)
|
||
const sessions = ['a', 'b'].map(sessionId => makeSession({
|
||
sessionId,
|
||
inventory,
|
||
turns: [makeTurn([makeCall({ cacheCreation: 10_000 })])],
|
||
}))
|
||
|
||
const finding = detectMcpToolCoverage([project(sessions)])
|
||
|
||
// Each call's 10K cache bucket is shared evenly by two 8K schemas.
|
||
// Total: 2 * 10K * 1.25 = 25K. The local mutation owns half.
|
||
expect(finding).toMatchObject({ tokensSaved: 25_000, applyTokensSaved: 12_500 })
|
||
})
|
||
|
||
it('charges only the flagged servers actually loaded in each session', () => {
|
||
const sessions = ['filesystem', 'claude_ai_Slack'].flatMap(server =>
|
||
['a', 'b'].map(suffix => makeSession({
|
||
sessionId: `${server}-${suffix}`,
|
||
inventory: Array.from({ length: 20 }, (_, i) => `mcp__${server}__t${i}`),
|
||
turns: [makeTurn([makeCall({ cacheCreation: 50_000 })])],
|
||
})),
|
||
)
|
||
|
||
const finding = detectMcpToolCoverage([project(sessions)])
|
||
|
||
// Four sessions each load one 8K schema. The combined finding must not
|
||
// charge both schemas to every session merely because both are flagged.
|
||
expect(finding).toMatchObject({ tokensSaved: 40_000, applyTokensSaved: 20_000 })
|
||
})
|
||
|
||
it('disambiguates a claude.ai connector from a similarly named local server', () => {
|
||
const sessions: SessionSummary[] = []
|
||
for (const server of ['claude_ai_Netlify', 'netlify']) {
|
||
const inventory = Array.from({ length: 20 }, (_, i) => `mcp__${server}__t${i}`)
|
||
sessions.push(
|
||
makeSession({ sessionId: `${server}-a`, inventory }),
|
||
makeSession({ sessionId: `${server}-b`, inventory }),
|
||
)
|
||
}
|
||
|
||
const finding = detectMcpToolCoverage([project(sessions)])
|
||
|
||
expect(finding).not.toBeNull()
|
||
expect(finding!.explanation).toContain('claude_ai_Netlify')
|
||
expect(finding!.explanation).toContain('separate from any similarly named local MCP server')
|
||
expect(finding!.fix.type).toBe('command')
|
||
if (finding!.fix.type === 'command') {
|
||
expect(finding!.fix.text).toBe("claude mcp remove 'netlify'")
|
||
expect(finding!.fix.text).not.toContain('claude_ai_Netlify')
|
||
}
|
||
expect(finding!.apply).toEqual({ kind: 'mcp-remove', servers: ['netlify'] })
|
||
})
|
||
|
||
it('escalates impact to high when token waste crosses the threshold', () => {
|
||
const inventory = Array.from({ length: 60 }, (_, i) => `mcp__big__t${i}`)
|
||
// 60 tools * 400 tokens = 24k schema. With many sessions and large
|
||
// cache-creation buckets, total effective tokens easily clear 200k.
|
||
const turns = [makeTurn([
|
||
makeCall({ tools: ['mcp__big__t0'], cacheCreation: 50_000 }),
|
||
makeCall({ cacheRead: 60_000 }),
|
||
makeCall({ cacheRead: 60_000 }),
|
||
])]
|
||
// Need enough sessions so the per-session ~28.8k effective tokens
|
||
// (24k write + 48k read × 0.10) sum past the 200k high-impact threshold.
|
||
const sessions = Array.from({ length: 8 }, (_, i) =>
|
||
makeSession({ sessionId: `s${i}`, inventory, turns, mcpBreakdown: { big: { calls: 1 } } }),
|
||
)
|
||
const finding = detectMcpToolCoverage([project(sessions)])
|
||
expect(finding).not.toBeNull()
|
||
expect(finding!.impact).toBe('high')
|
||
})
|
||
|
||
it('does not count invocation-only sessions toward loadedSessions', () => {
|
||
// Server `svc` has inventory in only one session, but is invoked in
|
||
// a second session that never observed the schema. Pre-fix this
|
||
// would have satisfied the >=2 session threshold; it must not now.
|
||
const inventory = Array.from({ length: 20 }, (_, i) => `mcp__svc__t${i}`)
|
||
const turns = [makeTurn([
|
||
makeCall({ tools: ['mcp__svc__t0'], cacheCreation: 50_000 }),
|
||
])]
|
||
const sessions = [
|
||
makeSession({ sessionId: 'a', inventory, turns, mcpBreakdown: { svc: { calls: 1 } } }),
|
||
// No inventory — this shouldn't be considered a "loaded" session.
|
||
makeSession({ sessionId: 'b', turns, mcpBreakdown: { svc: { calls: 1 } } }),
|
||
]
|
||
expect(detectMcpToolCoverage([project(sessions)])).toBeNull()
|
||
})
|
||
|
||
it('does not let invocations of un-inventoried tools inflate coverage', () => {
|
||
// Inventory has 20 tools, none invoked. Calls hit a 21st tool that
|
||
// never appeared in any deferred_tools_delta (could be a renamed/
|
||
// removed tool from an older session config). Coverage must stay 0%
|
||
// and unusedCount must not go negative.
|
||
const inventory = Array.from({ length: 20 }, (_, i) => `mcp__svc__t${i}`)
|
||
const turns = [makeTurn([makeCall({ tools: ['mcp__svc__ghost'] })])]
|
||
const sessions = [
|
||
makeSession({ sessionId: 'a', inventory, turns, mcpBreakdown: { svc: { calls: 1 } } }),
|
||
makeSession({ sessionId: 'b', inventory, turns, mcpBreakdown: { svc: { calls: 1 } } }),
|
||
]
|
||
const result = aggregateMcpCoverage([project(sessions)])
|
||
expect(result[0]!.toolsAvailable).toBe(20)
|
||
expect(result[0]!.toolsInvoked).toBe(0)
|
||
expect(result[0]!.coverageRatio).toBe(0)
|
||
expect(result[0]!.unusedTools).toHaveLength(20)
|
||
})
|
||
|
||
it('handles multiple flagged servers and pluralises the title', () => {
|
||
const sessions: SessionSummary[] = []
|
||
for (const server of ['svc1', 'svc2']) {
|
||
const inventory = Array.from({ length: 20 }, (_, i) => `mcp__${server}__t${i}`)
|
||
const turns = [makeTurn([
|
||
makeCall({ tools: [`mcp__${server}__t0`], cacheCreation: 50_000 }),
|
||
])]
|
||
sessions.push(
|
||
makeSession({ sessionId: `${server}-a`, inventory, turns, mcpBreakdown: { [server]: { calls: 1 } } }),
|
||
makeSession({ sessionId: `${server}-b`, inventory, turns, mcpBreakdown: { [server]: { calls: 1 } } }),
|
||
)
|
||
}
|
||
const finding = detectMcpToolCoverage([project(sessions)])
|
||
expect(finding).not.toBeNull()
|
||
expect(finding!.title).toContain('2 MCP servers')
|
||
expect((finding!.fix as { text: string }).text.split('\n')).toHaveLength(2)
|
||
})
|
||
})
|
||
|
||
// ---------------------------------------------------------------------------
|
||
// detectMcpProfileAdvisor — project-scoping recommendations
|
||
// ---------------------------------------------------------------------------
|
||
|
||
describe('detectMcpProfileAdvisor', () => {
|
||
const smallInventory = Array.from({ length: 4 }, (_, i) => `mcp__github__t${i}`)
|
||
|
||
it('flags a server loaded across projects but invoked only in one hot project', () => {
|
||
const hotTurns = [makeTurn([
|
||
makeCall({ tools: ['mcp__github__t0'], cacheCreation: 10_000 }),
|
||
makeCall({ tools: ['mcp__github__t1'], cacheCreation: 10_000 }),
|
||
])]
|
||
const coldTurns = [makeTurn([makeCall({ cacheCreation: 10_000 })])]
|
||
const projects = [
|
||
projectNamed('api', [
|
||
makeSession({ inventory: smallInventory, turns: hotTurns, mcpBreakdown: { github: { calls: 2 } } }),
|
||
]),
|
||
projectNamed('web', [
|
||
makeSession({ inventory: smallInventory, turns: coldTurns, mcpBreakdown: { github: { calls: 0 } } }),
|
||
]),
|
||
projectNamed('docs', [
|
||
makeSession({ inventory: smallInventory, turns: coldTurns, mcpBreakdown: { github: { calls: 0 } } }),
|
||
]),
|
||
]
|
||
|
||
const finding = detectMcpProfileAdvisor(projects)
|
||
expect(finding).not.toBeNull()
|
||
expect(finding!.title).toContain('project-scoped')
|
||
expect(finding!.explanation).toContain('github')
|
||
expect(finding!.explanation).toContain('/tmp/api')
|
||
expect(finding!.explanation).toContain('/tmp/web')
|
||
expect(finding!.explanation).toContain('/tmp/docs')
|
||
expect(finding!.tokensSaved).toBe(4000)
|
||
expect(finding!.fix.type).toBe('paste')
|
||
if (finding!.fix.type === 'paste') {
|
||
expect(finding!.fix.destination).toBe('prompt')
|
||
expect(finding!.fix.text).toContain('Keep github available for /tmp/api')
|
||
expect(finding!.fix.text).toContain('/tmp/web')
|
||
expect(finding!.fix.text).toContain('/tmp/docs')
|
||
}
|
||
})
|
||
|
||
it('does not flag servers used evenly across loaded projects', () => {
|
||
const projects = ['api', 'web', 'docs'].map(name => projectNamed(name, [
|
||
makeSession({
|
||
inventory: smallInventory,
|
||
turns: [makeTurn([makeCall({ tools: ['mcp__github__t0'], cacheCreation: 10_000 })])],
|
||
mcpBreakdown: { github: { calls: 2 } },
|
||
}),
|
||
]))
|
||
|
||
expect(detectMcpProfileAdvisor(projects)).toBeNull()
|
||
})
|
||
|
||
it('allows a hot profile shared by two projects', () => {
|
||
const projects = [
|
||
projectNamed('api', [
|
||
makeSession({
|
||
inventory: smallInventory,
|
||
turns: [makeTurn([
|
||
makeCall({ tools: ['mcp__github__t0'], cacheCreation: 10_000 }),
|
||
makeCall({ tools: ['mcp__github__t1'], cacheCreation: 10_000 }),
|
||
])],
|
||
mcpBreakdown: { github: { calls: 2 } },
|
||
}),
|
||
]),
|
||
projectNamed('web', [
|
||
makeSession({
|
||
inventory: smallInventory,
|
||
turns: [makeTurn([
|
||
makeCall({ tools: ['mcp__github__t0'], cacheCreation: 10_000 }),
|
||
makeCall({ tools: ['mcp__github__t1'], cacheCreation: 10_000 }),
|
||
])],
|
||
mcpBreakdown: { github: { calls: 2 } },
|
||
}),
|
||
]),
|
||
projectNamed('docs', [
|
||
makeSession({
|
||
inventory: smallInventory,
|
||
turns: [makeTurn([makeCall({ cacheCreation: 10_000 })])],
|
||
mcpBreakdown: { github: { calls: 0 } },
|
||
}),
|
||
]),
|
||
projectNamed('playground', [
|
||
makeSession({
|
||
inventory: smallInventory,
|
||
turns: [makeTurn([makeCall({ cacheCreation: 10_000 })])],
|
||
mcpBreakdown: { github: { calls: 0 } },
|
||
}),
|
||
]),
|
||
]
|
||
|
||
const finding = detectMcpProfileAdvisor(projects)
|
||
expect(finding).not.toBeNull()
|
||
expect(finding!.explanation).toContain('/tmp/api')
|
||
expect(finding!.explanation).toContain('/tmp/web')
|
||
expect(finding!.explanation).toContain('/tmp/docs')
|
||
expect(finding!.explanation).toContain('/tmp/playground')
|
||
})
|
||
|
||
it('caps profile savings once when multiple candidate servers share cold sessions', () => {
|
||
const githubInventory = Array.from({ length: 4 }, (_, i) => `mcp__github__t${i}`)
|
||
const slackInventory = Array.from({ length: 4 }, (_, i) => `mcp__slack__t${i}`)
|
||
const inventory = [...githubInventory, ...slackInventory]
|
||
const projects = [
|
||
projectNamed('api', [
|
||
makeSession({
|
||
inventory,
|
||
turns: [makeTurn([
|
||
makeCall({ tools: ['mcp__github__t0'] }),
|
||
makeCall({ tools: ['mcp__github__t1'] }),
|
||
makeCall({ tools: ['mcp__slack__t0'] }),
|
||
makeCall({ tools: ['mcp__slack__t1'] }),
|
||
])],
|
||
mcpBreakdown: { github: { calls: 2 }, slack: { calls: 2 } },
|
||
}),
|
||
]),
|
||
projectNamed('web', [
|
||
makeSession({
|
||
inventory,
|
||
turns: [makeTurn([makeCall({ cacheCreation: 2_000 })])],
|
||
mcpBreakdown: { github: { calls: 0 }, slack: { calls: 0 } },
|
||
}),
|
||
]),
|
||
projectNamed('docs', [
|
||
makeSession({
|
||
inventory,
|
||
turns: [makeTurn([makeCall({ cacheCreation: 2_000 })])],
|
||
mcpBreakdown: { github: { calls: 0 }, slack: { calls: 0 } },
|
||
}),
|
||
]),
|
||
]
|
||
|
||
const finding = detectMcpProfileAdvisor(projects)
|
||
expect(finding).not.toBeNull()
|
||
expect(finding!.title).toContain('2 MCP servers')
|
||
expect(finding!.explanation).toContain('github')
|
||
expect(finding!.explanation).toContain('slack')
|
||
expect(finding!.tokensSaved).toBe(5000)
|
||
})
|
||
|
||
it('requires at least three loaded projects before recommending a profile', () => {
|
||
const projects = [
|
||
projectNamed('api', [
|
||
makeSession({
|
||
inventory: smallInventory,
|
||
turns: [makeTurn([makeCall({ tools: ['mcp__github__t0'], cacheCreation: 10_000 })])],
|
||
mcpBreakdown: { github: { calls: 2 } },
|
||
}),
|
||
]),
|
||
projectNamed('web', [
|
||
makeSession({
|
||
inventory: smallInventory,
|
||
turns: [makeTurn([makeCall({ cacheCreation: 10_000 })])],
|
||
mcpBreakdown: { github: { calls: 0 } },
|
||
}),
|
||
]),
|
||
]
|
||
|
||
expect(detectMcpProfileAdvisor(projects)).toBeNull()
|
||
})
|
||
|
||
it('does not duplicate low tool coverage findings for the same server', () => {
|
||
const inventory = Array.from({ length: 12 }, (_, i) => `mcp__huge__t${i}`)
|
||
const projects = [
|
||
projectNamed('api', [
|
||
makeSession({
|
||
inventory,
|
||
turns: [makeTurn([makeCall({ tools: ['mcp__huge__t0'], cacheCreation: 20_000 })])],
|
||
mcpBreakdown: { huge: { calls: 3 } },
|
||
}),
|
||
]),
|
||
projectNamed('web', [
|
||
makeSession({
|
||
inventory,
|
||
turns: [makeTurn([makeCall({ cacheCreation: 20_000 })])],
|
||
mcpBreakdown: { huge: { calls: 0 } },
|
||
}),
|
||
]),
|
||
projectNamed('docs', [
|
||
makeSession({
|
||
inventory,
|
||
turns: [makeTurn([makeCall({ cacheCreation: 20_000 })])],
|
||
mcpBreakdown: { huge: { calls: 0 } },
|
||
}),
|
||
]),
|
||
]
|
||
const coverage = [{
|
||
server: 'huge',
|
||
toolsAvailable: 12,
|
||
toolsInvoked: 1,
|
||
unusedTools: Array.from({ length: 11 }, (_, i) => `mcp__huge__t${i + 1}`),
|
||
invocations: 3,
|
||
loadedSessions: 3,
|
||
coverageRatio: 1 / 12,
|
||
}]
|
||
|
||
expect(detectMcpProfileAdvisor(projects, coverage)).toBeNull()
|
||
})
|
||
})
|
||
|
||
// ---------------------------------------------------------------------------
|
||
// Connector findings under the fix/nudge/keep classification (#1019)
|
||
// ---------------------------------------------------------------------------
|
||
|
||
describe('connector findings and finding class', () => {
|
||
const inventoryFor = (servers: string[]) => servers.flatMap(server =>
|
||
Array.from({ length: 20 }, (_, i) => `mcp__${server}__t${i}`),
|
||
)
|
||
const twoSessions = (servers: string[]) => ['a', 'b'].map(sessionId => makeSession({
|
||
sessionId,
|
||
inventory: inventoryFor(servers),
|
||
turns: [makeTurn([makeCall({ cacheCreation: 50_000 })])],
|
||
}))
|
||
|
||
it('classifies a connector-only finding as a nudge, since nothing is appliable', () => {
|
||
const finding = detectMcpToolCoverage([project(twoSessions(['claude_ai_Gmail']))])
|
||
|
||
expect(finding).not.toBeNull()
|
||
expect(finding!.apply).toBeUndefined()
|
||
expect(findingClass(finding!)).toBe('nudge')
|
||
expect(finding!.tokensSaved).toBeGreaterThan(0)
|
||
// Never lands in the "apply-able" subtotal.
|
||
expect(classTotals([finding!], 0.00002).fix).toEqual({ tokensSaved: 0, savingsUSD: 0, count: 0 })
|
||
})
|
||
|
||
it('counts only the local subset of a mixed finding towards the apply-able subtotal', () => {
|
||
const finding = detectMcpToolCoverage([project(twoSessions(['filesystem', 'claude_ai_Slack']))])
|
||
|
||
expect(finding).not.toBeNull()
|
||
expect(findingClass(finding!)).toBe('fix')
|
||
expect(finding).toMatchObject({ tokensSaved: 40_000, applyTokensSaved: 20_000 })
|
||
expect(classTotals([finding!], 0.00002).fix).toEqual({ tokensSaved: 20_000, savingsUSD: 0.4, count: 1 })
|
||
})
|
||
|
||
it("leaves a local-only finding's subtotal at its full estimate", () => {
|
||
const finding = detectMcpToolCoverage([project(twoSessions(['filesystem']))])
|
||
|
||
expect(finding).not.toBeNull()
|
||
expect(finding!.applyTokensSaved).toBeUndefined()
|
||
expect(classTotals([finding!], 0.00002).fix.tokensSaved).toBe(finding!.tokensSaved)
|
||
})
|
||
|
||
it('charges each session only for the local schemas it actually loaded', () => {
|
||
// Same per-session scoping the connector split relies on, with no
|
||
// connector in play: two flagged local servers in disjoint sessions are
|
||
// charged one schema each, not both schemas everywhere.
|
||
const sessions = ['filesystem', 'playwright'].flatMap(server =>
|
||
['a', 'b'].map(suffix => makeSession({
|
||
sessionId: `${server}-${suffix}`,
|
||
inventory: inventoryFor([server]),
|
||
turns: [makeTurn([makeCall({ cacheCreation: 50_000 })])],
|
||
})),
|
||
)
|
||
|
||
const finding = detectMcpToolCoverage([project(sessions)])
|
||
|
||
expect(finding).toMatchObject({ tokensSaved: 40_000 })
|
||
expect(finding!.applyTokensSaved).toBeUndefined()
|
||
expect(classTotals([finding!], 0.00002).fix.tokensSaved).toBe(40_000)
|
||
})
|
||
|
||
it('treats a local server named like a connector namespace as manual only', () => {
|
||
// Known limitation: the namespace prefix is the only connector signal in
|
||
// the transcript, so a local server literally named claude_ai_* gets the
|
||
// manual /mcp guidance rather than a remove command. Conservative by
|
||
// design: CodeBurn never emits a command that could hit a connector.
|
||
const finding = detectMcpToolCoverage([project(twoSessions(['claude_ai_homegrown']))])
|
||
|
||
expect(finding!.fix.type).toBe('paste')
|
||
expect(finding!.apply).toBeUndefined()
|
||
expect(findingClass(finding!)).toBe('nudge')
|
||
})
|
||
})
|