mirror of
https://github.com/badlogic/pi-mono.git
synced 2026-05-02 00:00:20 +00:00
82 lines
3.2 KiB
Markdown
82 lines
3.2 KiB
Markdown
# JSON Event Stream Mode
|
|
|
|
```bash
|
|
pi --mode json "Your prompt"
|
|
```
|
|
|
|
Outputs all session events as JSON lines to stdout. Useful for integrating pi into other tools or custom UIs.
|
|
|
|
## Event Types
|
|
|
|
Events are defined in [`AgentSessionEvent`](https://github.com/badlogic/pi-mono/blob/main/packages/coding-agent/src/core/agent-session.ts#L102):
|
|
|
|
```typescript
|
|
type AgentSessionEvent =
|
|
| AgentEvent
|
|
| { type: "queue_update"; steering: readonly string[]; followUp: readonly string[] }
|
|
| { type: "compaction_start"; reason: "manual" | "threshold" | "overflow" }
|
|
| { type: "compaction_end"; reason: "manual" | "threshold" | "overflow"; result: CompactionResult | undefined; aborted: boolean; willRetry: boolean; errorMessage?: string }
|
|
| { type: "auto_retry_start"; attempt: number; maxAttempts: number; delayMs: number; errorMessage: string }
|
|
| { type: "auto_retry_end"; success: boolean; attempt: number; finalError?: string };
|
|
```
|
|
|
|
`queue_update` emits the full pending steering and follow-up queues whenever they change. `compaction_start` and `compaction_end` cover both manual and automatic compaction.
|
|
|
|
Base events from [`AgentEvent`](https://github.com/badlogic/pi-mono/blob/main/packages/agent/src/types.ts#L179):
|
|
|
|
```typescript
|
|
type AgentEvent =
|
|
// Agent lifecycle
|
|
| { type: "agent_start" }
|
|
| { type: "agent_end"; messages: AgentMessage[] }
|
|
// Turn lifecycle
|
|
| { type: "turn_start" }
|
|
| { type: "turn_end"; message: AgentMessage; toolResults: ToolResultMessage[] }
|
|
// Message lifecycle
|
|
| { type: "message_start"; message: AgentMessage }
|
|
| { type: "message_update"; message: AgentMessage; assistantMessageEvent: AssistantMessageEvent }
|
|
| { type: "message_end"; message: AgentMessage }
|
|
// Tool execution
|
|
| { type: "tool_execution_start"; toolCallId: string; toolName: string; args: any }
|
|
| { type: "tool_execution_update"; toolCallId: string; toolName: string; args: any; partialResult: any }
|
|
| { type: "tool_execution_end"; toolCallId: string; toolName: string; result: any; isError: boolean };
|
|
```
|
|
|
|
## Message Types
|
|
|
|
Base messages from [`packages/ai/src/types.ts`](https://github.com/badlogic/pi-mono/blob/main/packages/ai/src/types.ts#L134):
|
|
- `UserMessage` (line 134)
|
|
- `AssistantMessage` (line 140)
|
|
- `ToolResultMessage` (line 152)
|
|
|
|
Extended messages from [`packages/coding-agent/src/core/messages.ts`](https://github.com/badlogic/pi-mono/blob/main/packages/coding-agent/src/core/messages.ts#L29):
|
|
- `BashExecutionMessage` (line 29)
|
|
- `CustomMessage` (line 46)
|
|
- `BranchSummaryMessage` (line 55)
|
|
- `CompactionSummaryMessage` (line 62)
|
|
|
|
## Output Format
|
|
|
|
Each line is a JSON object. The first line is the session header:
|
|
|
|
```json
|
|
{"type":"session","version":3,"id":"uuid","timestamp":"...","cwd":"/path"}
|
|
```
|
|
|
|
Followed by events as they occur:
|
|
|
|
```json
|
|
{"type":"agent_start"}
|
|
{"type":"turn_start"}
|
|
{"type":"message_start","message":{"role":"assistant","content":[],...}}
|
|
{"type":"message_update","message":{...},"assistantMessageEvent":{"type":"text_delta","delta":"Hello",...}}
|
|
{"type":"message_end","message":{...}}
|
|
{"type":"turn_end","message":{...},"toolResults":[]}
|
|
{"type":"agent_end","messages":[...]}
|
|
```
|
|
|
|
## Example
|
|
|
|
```bash
|
|
pi --mode json "List files" 2>/dev/null | jq -c 'select(.type == "message_end")'
|
|
```
|