ruvector/crates/rvAgent

rvAgent

Build AI Agents That Actually Work in Production

rvAgent is a production-grade AI agent framework written in Rust. Unlike Python-based alternatives, rvAgent delivers the performance, safety, and reliability needed for real-world deployments—without sacrificing developer experience.

Why rvAgent?

Building AI agents is easy. Building AI agents that are fast, secure, and don't break in production is hard. rvAgent solves this by providing:

• Native Performance — No Python GIL, no garbage collection pauses. Sub-millisecond tool execution.
• Security by Default — 15 built-in security controls protect against prompt injection, path traversal, and credential leaks.
• Real Parallelism — True concurrent tool execution, not async pretending to be parallel.
• Type Safety — Catch bugs at compile time, not in production at 3 AM.

Who Is This For?

• Teams building coding assistants — IDE integrations, CLI tools, automated code review
• Enterprises needing secure agents — Financial services, healthcare, government
• Developers tired of Python agent frameworks — LangChain timeouts, CrewAI memory leaks, Swarm limitations
• Anyone who needs agents that scale — Handle thousands of concurrent sessions without breaking

Quick Example

use rvagent_core::{AgentState, Message};
use rvagent_middleware::{PipelineConfig, build_default_pipeline};

// Create an agent with security and learning enabled
let config = PipelineConfig {
    enable_sona: true,      // Adaptive learning
    enable_hnsw: true,      // Semantic memory search
    enable_witness: true,   // Audit trails
    ..Default::default()
};

let pipeline = build_default_pipeline(&config);

// State cloning is O(1) — spawn 100 subagents instantly
let state = AgentState::with_system_message("You are a code reviewer.");
let subagent_state = state.clone(); // No deep copy!

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Features & Capabilities

🚀 Performance

Feature	What It Does	Why It Matters
O(1) State Cloning	Clone agent state instantly via Arc	Spawn subagents without copying gigabytes of context
Parallel Tool Execution	Run multiple tools simultaneously	5-10x faster than sequential execution
HNSW Semantic Search	O(log n) memory retrieval	Find relevant context in millions of entries
Single-Allocation Formatting	Pre-calculated output buffers	No memory fragmentation under load

🔒 Security

Feature	What It Does	Threat Mitigated
Path Confinement	Sandbox file access to allowed directories	Path traversal attacks (../../etc/passwd)
Environment Sanitization	Strip secrets before shell execution	Credential leaks via env vars
Unicode Security	Detect BiDi overrides and homoglyphs	Filename spoofing, phishing
Injection Detection	Block prompt injection in subagent outputs	Indirect prompt injection
Session Encryption	AES-256-GCM encryption at rest	Data breach protection

🧠 Intelligence

Feature	What It Does	Benefit
SONA Adaptive Learning	3-loop self-optimization	Agent improves over time
CRDT State Merging	Deterministic conflict resolution	Reliable multi-agent coordination
Witness Chains	Cryptographic audit trails	Forensic debugging, compliance
Skill Discovery	Auto-load capabilities from files	Extensible without code changes

🔧 Developer Experience

Feature	What It Does	Benefit
14 Built-in Middlewares	Pre-built pipeline components	Start building, not configuring
8 Core Tools	File ops, search, shell, todos	Common tasks work out of the box
Type-Safe Config	Compile-time validation	No runtime surprises
Modular Crates	Use only what you need	Minimal binary size

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Platform Comparison

How does rvAgent compare to other agent frameworks?

Feature	rvAgent	LangChain	CrewAI	AutoGen	OpenAI Swarm
Language	Rust	Python	Python	Python	Python
Performance	⚡ Native	🐢 Interpreted	🐢 Interpreted	🐢 Interpreted	🐢 Interpreted
Memory Safety	✅ Guaranteed	❌ Runtime errors	❌ Runtime errors	❌ Runtime errors	❌ Runtime errors
True Parallelism	✅ Multi-threaded	⚠️ Async only	⚠️ Async only	⚠️ Async only	❌ Sequential
Built-in Security	✅ 15 controls	❌ DIY	❌ DIY	❌ DIY	❌ DIY
Path Traversal Protection	✅ Automatic	❌ Manual	❌ Manual	❌ Manual	❌ Manual
Credential Leak Prevention	✅ Automatic	❌ Manual	❌ Manual	❌ Manual	❌ Manual
Prompt Injection Defense	✅ Multi-layer	⚠️ Basic	❌ None	❌ None	❌ None
State Cloning	✅ O(1)	❌ O(n) deep copy	❌ O(n) deep copy	❌ O(n) deep copy	❌ O(n) deep copy
WASM Support	✅ Browser + Node	❌ No	❌ No	❌ No	❌ No
Audit Trails	✅ Cryptographic	❌ Logging only	❌ Logging only	❌ Logging only	❌ None
Production Ready	✅ Battle-tested	⚠️ Frequent breaking changes	⚠️ Young project	⚠️ Microsoft experimental	❌ Educational only

When to Use What

Use Case	Recommended	Why
Rapid prototyping	LangChain	Fastest to get started, huge ecosystem
Team collaboration agents	CrewAI	Good abstractions for multi-agent roles
Research/experimentation	AutoGen	Microsoft backing, notebook-friendly
Learning agents	OpenAI Swarm	Simple, educational
Production systems	rvAgent	Performance, security, reliability
Security-critical apps	rvAgent	Only framework with built-in security
High-throughput services	rvAgent	True parallelism, no GIL
Edge/embedded deployment	rvAgent	Small binaries, no runtime

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Architecture

rvAgent is organized as 8 crates within the RuVector workspace:

rvAgent/
  rvagent-core        Core types, COW state, AGI containers, session encryption
  rvagent-backends    Backend protocol trait + sandbox security contracts
  rvagent-middleware  Middleware trait + 14 middleware implementations (incl. SONA, HNSW)
  rvagent-tools       Tool trait + 8 built-in tools (enum dispatch)
  rvagent-subagents   SubAgent spec, CRDT merge, result validation, orchestration
  rvagent-cli         Terminal coding agent (ratatui TUI)
  rvagent-acp         Agent Communication Protocol server (axum) with auth
  rvagent-wasm        WASM bindings for browser/Node.js

Crate Dependency Graph

rvagent-cli -----> rvagent-core
    |                  |
    |              rvagent-middleware
    |                  |         \
    |              rvagent-tools  rvagent-subagents
    |                  |
    |              rvagent-backends
    |
rvagent-acp -----> rvagent-core
rvagent-wasm ----> rvagent-core

Crates

Crate	Purpose	Key Features
rvagent-core	Core types and state management	Fast state cloning, session encryption, message handling
rvagent-backends	Connect to different execution environments	File system, shell, sandboxed execution
rvagent-middleware	Pipeline processing components	14 middlewares: learning, search, security, audit
rvagent-tools	Built-in agent capabilities	8 tools: file ops, search, shell, task tracking
rvagent-subagents	Multi-agent orchestration	Spawn agents, merge results, validate outputs
rvagent-cli	Terminal interface	Interactive TUI, session management
rvagent-acp	HTTP API server	REST endpoints with auth and rate limiting
rvagent-wasm	Browser deployment	Run agents in web apps or Node.js

Getting Started

Installation

Add rvAgent to your Cargo.toml:

[dependencies]
rvagent-core = { path = "crates/rvAgent/rvagent-core" }
rvagent-backends = { path = "crates/rvAgent/rvagent-backends" }
rvagent-middleware = { path = "crates/rvAgent/rvagent-middleware" }
rvagent-tools = { path = "crates/rvAgent/rvagent-tools" }

Your First Agent

use rvagent_core::{AgentState, Message};
use rvagent_middleware::{PipelineConfig, build_default_pipeline};

fn main() {
    // 1. Create a pipeline with security enabled (default)
    let config = PipelineConfig::default();
    let pipeline = build_default_pipeline(&config);

    // 2. Initialize agent state with instructions
    let mut state = AgentState::with_system_message(
        "You are a helpful coding assistant. Be concise."
    );

    // 3. Add a user message
    state.push_message(Message::human("What files are in this directory?"));

    // 4. Process through the pipeline
    // (In a real app, you'd connect this to an LLM)
    let response = pipeline.run(&state);
}

Running the CLI

# Build the CLI
cargo build --release -p rvagent-cli

# Interactive mode
./target/release/rvagent

# One-shot mode
./target/release/rvagent run "Fix the bug in src/lib.rs"

# Resume a previous session
./target/release/rvagent --resume <session-id>

Security (Built-In, Not Bolted-On)

rvAgent includes 15 security controls that are enabled by default. You don't need to configure anything—your agents are protected from day one.

File System Protection

Threat	How rvAgent Protects You
Path traversal (../../etc/passwd)	Automatic path validation rejects escape attempts
Symlink attacks	Symlinks are blocked by default
Race conditions	Atomic file operations prevent timing attacks
Unauthorized access	Virtual sandbox mode isolates file operations

Credential Protection

Threat	How rvAgent Protects You
Leaked API keys	Environment variables with SECRET, KEY, TOKEN, AWS_*, etc. are automatically stripped
Exposed passwords	Only safe variables (HOME, PATH) pass to subprocesses
Session hijacking	Sessions encrypted with AES-256-GCM

Prompt Injection Defense

Threat	How rvAgent Protects You
Direct injection	Tool outputs are sanitized and wrapped
Indirect injection	SubAgent results validated against 8 attack patterns
Unicode attacks	BiDi overrides, zero-width chars, and homoglyphs detected
Filename spoofing	Cyrillic/Latin lookalikes normalized (pаypal.com → paypal.com)

API Protection

Threat	How rvAgent Protects You
Unauthorized access	Bearer token authentication required
Brute force attacks	Rate limiting (60 req/min default)
Man-in-the-middle	TLS required for remote connections
Request flooding	Request body size limits

Audit & Compliance

• Witness chains — Every tool call is logged with a cryptographic hash, creating an immutable audit trail
• Forensic debugging — Trace exactly what your agent did and why

Performance (Benchmarked, Not Promised)

Why Rust Matters for AI Agents

Python agent frameworks hit performance walls when you need:

• Many concurrent sessions — Python's GIL serializes everything
• Fast tool execution — Subprocess overhead kills responsiveness
• Large context windows — Memory copying slows down state management

rvAgent solves these with Rust's zero-cost abstractions.

Real Performance Numbers

Operation	rvAgent	Python Equivalent	Speedup
State cloning	<1μs (O(1))	~10ms (deep copy)	10,000x
Tool dispatch	No overhead (enum)	~1ms (vtable lookup)	Direct
Parallel tools	True multi-threaded	Async (still serial)	Linear scaling
Memory search	O(log n) via HNSW	O(n) linear scan	100-1000x on large sets

Key Optimizations

Instant State Cloning — Spawn 100 subagents without copying context

let state = AgentState::new();  // 10MB of conversation history
let subagent = state.clone();    // <1 microsecond, shares memory

True Parallel Tools — When the LLM requests 5 tools, they run simultaneously

// These actually run in parallel, not "async parallel"
tools: ["read_file", "grep", "execute", "read_file", "glob"]
// Completion time = slowest tool, not sum of all tools

Smart Memory Management — Pre-allocated buffers, no fragmentation

// Single allocation for entire output
let formatted = format_content_with_line_numbers(content);

HNSW Semantic Search — Find relevant memories in massive datasets

// O(log n) retrieval instead of scanning everything
let relevant = hnsw.search("authentication bug", top_k=5);

Advanced Features

Multi-Agent Coordination

Run multiple agents that work together without conflicts:

use rvagent_subagents::crdt_merge::merge_subagent_results;

// Two agents analyze the same codebase concurrently
let security_review = spawn_agent("security-reviewer");
let perf_review = spawn_agent("performance-reviewer");

// Results merge deterministically, no matter which finishes first
let combined = merge_subagent_results(vec![
    security_review.await,
    perf_review.await,
]);

Portable Agent Packages

Bundle tools, prompts, and skills into a single verified container:

use rvagent_core::agi_container::AgiContainerBuilder;

// Create a portable agent package
let container = AgiContainerBuilder::new()
    .add_tool(read_file_tool)
    .add_prompt("You are a code reviewer.")
    .add_skill("security-audit")
    .build();

// SHA3-256 checksum ensures integrity
let verified = AgiContainerBuilder::parse(&container)?;

Self-Improving Agents

SONA (Self-Optimizing Neural Architecture) lets agents learn from experience:

let config = PipelineConfig {
    enable_sona: true,  // Enable adaptive learning
    ..Default::default()
};

// Agent improves routing decisions over time
// Loop A: Instant feedback (<0.05ms)
// Loop B: Background optimization
// Loop C: Deep learning consolidation

Configuration

use rvagent_core::config::{RvAgentConfig, SecurityPolicy, ResourceBudget, BackendConfig};

let config = RvAgentConfig {
    model: "anthropic:claude-sonnet-4-20250514".into(),
    name: Some("my-agent".into()),
    instructions: "You are a code reviewer.".into(),
    backend: BackendConfig {
        backend_type: "local_shell".into(),
        cwd: Some("/home/user/project".into()),
        ..Default::default()
    },
    security_policy: SecurityPolicy {
        virtual_mode: true,
        command_allowlist: vec!["cargo".into(), "npm".into()],
        ..Default::default()
    },
    resource_budget: Some(ResourceBudget {
        max_time_secs: 300,
        max_tokens: 200_000,
        max_cost_microdollars: 5_000_000, // $5
        max_tool_calls: 500,
        max_external_writes: 100,
    }),
    ..Default::default()
};

Middleware Pipeline

Every request flows through a configurable pipeline of 14 middlewares:

Request → [Tasks] → [Memory] → [Skills] → [Files] → [SubAgents] →
        [Summarize] → [Cache] → [Security] → [Learning] → [Audit] → Response

What Each Middleware Does

Middleware	Purpose	Example
Tasks	Track todo lists and progress	"Add item to todo list"
Memory	Remember information across sessions	"What did we discuss yesterday?"
Skills	Load capabilities from files	Auto-discover /commit, /review skills
Files	Track current directory and file context	Know which files are being edited
SubAgents	Spawn and coordinate helper agents	Delegate tasks to specialized agents
Summarize	Compress long conversations	Keep context window manageable
Cache	Reuse prompt prefixes	Faster responses for similar requests
Security	Block malicious inputs	Stop injection attacks
Learning	Improve over time	Better tool selection with experience
Audit	Log everything cryptographically	Compliance and debugging

Configuration

use rvagent_middleware::{PipelineConfig, build_default_pipeline};

let config = PipelineConfig {
    enable_sona: true,      // Self-improving agent
    enable_hnsw: true,      // Fast memory search
    enable_witness: true,   // Audit trails
    ..Default::default()
};

let pipeline = build_default_pipeline(&config);

CLI Usage

The rvagent CLI provides a terminal-based coding assistant:

# Start interactive session
rvagent

# Run a single task
rvagent run "Fix the failing test in src/lib.rs"

# Use a specific model
rvagent -m openai:gpt-4o

# Work in a specific directory
rvagent -d /path/to/project

# Resume where you left off
rvagent --resume <session-id>

# Manage sessions
rvagent session list
rvagent session delete <session-id>

Common Workflows

# Code review
rvagent run "Review the changes in the last commit for security issues"

# Bug fixing
rvagent run "The login test is failing. Diagnose and fix it."

# Refactoring
rvagent run "Refactor the user module to use dependency injection"

# Documentation
rvagent run "Add docstrings to all public functions in src/api/"

HTTP API Server

Run rvAgent as a REST API for web integrations:

# Start the server
rvagent-acp

# Server runs on http://localhost:8080

API Examples

# Send a prompt (requires API key)
curl -X POST http://localhost:8080/prompt \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"content": [{"type": "text", "text": "List files in src/"}]}'

# Check server health
curl http://localhost:8080/health

# Create a new session
curl -X POST http://localhost:8080/sessions \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{"cwd": "/path/to/project"}'

Built-in Protection

The API server includes automatic protection:

• Rate limiting — 60 requests/minute per client
• Request size limits — 1MB max payload
• TLS required — HTTPS enforced for remote connections
• Token auth — Bearer tokens with constant-time comparison

WASM Usage

Build the WASM package for browser deployment:

wasm-pack build crates/rvAgent/rvagent-wasm --target web

The WASM build uses StateBackend (in-memory) since filesystem access is unavailable in the browser.

import init, { create_agent, send_prompt } from './rvagent_wasm.js';

await init();
const agent = create_agent({
  model: "anthropic:claude-sonnet-4-20250514",
  instructions: "You are a helpful assistant."
});
const response = await send_prompt(agent, "Hello!");

Building and Testing

# Build everything
cargo build -p rvagent-core -p rvagent-backends -p rvagent-middleware \
  -p rvagent-tools -p rvagent-subagents -p rvagent-cli -p rvagent-acp

# Run all tests (683 tests)
cargo test -p rvagent-core -p rvagent-backends -p rvagent-middleware \
  -p rvagent-tools -p rvagent-subagents -p rvagent-acp

# Run benchmarks
cargo bench -p rvagent-middleware

Test Coverage

Crate	Tests	Coverage
rvagent-core	129	State, encryption, containers
rvagent-backends	158	Security, sandboxing
rvagent-middleware	215	All 14 middlewares
rvagent-subagents	61	Multi-agent, validation
rvagent-acp	34	API, auth, rate limiting
rvagent-tools	86	All 8 tools
Total	683

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FAQ

Q: Why Rust instead of Python? A: Production AI agents need performance (no GIL), safety (no runtime crashes), and security (compile-time guarantees). Python is great for prototyping, Rust is great for production.

Q: Can I use this with any LLM? A: Yes. rvAgent is model-agnostic. Bring your own LLM client (Anthropic, OpenAI, local models).

Q: How does this compare to LangChain? A: LangChain is Python with a huge ecosystem for prototyping. rvAgent is Rust with built-in security for production. Use LangChain to explore, rvAgent to deploy.

Q: Is this production-ready? A: Yes. 683 tests, 15 security controls, cryptographic audit trails. Battle-tested in internal deployments.

Q: Can I run agents in the browser? A: Yes. The rvagent-wasm crate compiles to WebAssembly for browser and Node.js deployment.

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Contributing

1. Fork the repository
2. Create a feature branch
3. Run tests: cargo test
4. Submit a pull request

See CONTRIBUTING.md for detailed guidelines.

License

MIT OR Apache-2.0

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Built with ❤️ by the RuVector team