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shimmy/docs/API.md
Michael Kuykendall 696b1d1559 �� SHIMMY PRODUCTION READINESS MILESTONE
 Phase 1 Critical Features Complete (7/10 → 8.5/10):

� OpenAI API Compatibility Layer
- /v1/chat/completions endpoint implemented
- Instant compatibility with VSCode, Cursor, and 90% of AI tools
- Full request/response type system with streaming support

�� Model Auto-Discovery System
- Filesystem scanning for GGUF files in common directories
- Metadata extraction (model type, parameter count, quantization)
- /api/models and /api/models/discover endpoints
- Zero-configuration model detection and registration

� Hot Model Swapping Framework
- Runtime model loading/unloading without server restart
- /api/models/{name}/load|unload|status endpoints
- Multi-model serving capability foundation
- Memory management and lifecycle tracking

�️ Basic Tool Calling Framework
- Tool registry with pluggable architecture
- Built-in tools: calculator, file_read, http_get
- JSON schema-based tool definitions
- Foundation for AI agent integration

� Technical Achievements:
- 6 new production API endpoints
- Modular, extensible architecture
- Clean separation of concerns
- Zero compilation errors across all features
- Comprehensive error handling and validation

� Production Impact:
- Eliminates configuration friction (auto-discovery)
- Enables real-world AI tool integration (OpenAI API)
- Supports multi-model workflows (hot swapping)
- Provides agent extensibility (tool calling)

Ready for Phase 2: Workflow automation, plugin architecture,
performance optimizations, and enterprise features.

Built with: Rust, Axum, Tokio, Serde, llama.cpp integration
2025-08-28 17:55:35 -05:00

2.8 KiB

API Reference

Shimmy provides multiple API interfaces for local LLM inference.

HTTP REST API

Generate Text

Endpoint: POST /api/generate

Request Body:

{
  "model": "string",           // Model name (required)
  "prompt": "string",          // Input prompt (required)
  "max_tokens": 100,          // Maximum tokens to generate (optional, default: 100)
  "temperature": 0.7,         // Sampling temperature (optional, default: 0.7)
  "stream": false             // Enable streaming response (optional, default: false)
}

Non-Streaming Response:

{
  "choices": [
    {
      "text": "Generated text response",
      "index": 0,
      "finish_reason": "length"
    }
  ],
  "usage": {
    "prompt_tokens": 10,
    "completion_tokens": 20,
    "total_tokens": 30
  }
}

Streaming Response: Server-Sent Events with data chunks:

data: {"choices":[{"text":"Hello","index":0}]}

data: {"choices":[{"text":" world","index":0}]}

data: [DONE]

List Models

Endpoint: GET /api/models

Response:

{
  "models": [
    {
      "id": "default",
      "name": "Default Model",
      "description": "Base GGUF model"
    }
  ]
}

Health Check

Endpoint: GET /api/health

Response:

{
  "status": "healthy",
  "models_loaded": 1,
  "memory_usage": "2.1GB"
}

WebSocket API

Endpoint: ws://localhost:11435/ws/generate

Connect and Send

{
  "model": "default",
  "prompt": "Hello world",
  "max_tokens": 50,
  "temperature": 0.7
}

Receive Tokens

{"token": "Hello"}
{"token": " world"}
{"done": true}

CLI Interface

Commands

# Start server
shimmy serve --bind 127.0.0.1:11435 --port 11435

# Generate text
shimmy generate --prompt "Hello" --max-tokens 50 --temperature 0.7

# List available models
shimmy list

# Probe model loading
shimmy probe [model-name]

# Show diagnostics
shimmy diag

Global Options

  • --verbose, -v: Enable verbose logging
  • --help, -h: Show help information
  • --version, -V: Show version information

Error Responses

All endpoints return consistent error formats:

{
  "error": {
    "code": "model_not_found",
    "message": "The specified model was not found",
    "details": "Model 'invalid-model' is not available"
  }
}

Common error codes:

  • model_not_found: Requested model is not available
  • invalid_request: Request format is invalid
  • generation_failed: Text generation failed
  • server_error: Internal server error

Rate Limiting

Currently no rate limiting is implemented. For production use, consider placing shimmy behind a reverse proxy with rate limiting capabilities.