synth-agent-sdk 0.5.3

Autonomous agents, engineered. A Python SDK for building production-grade AI agents and multi-agent systems.

Synth

Autonomous agents, engineered.

A Python SDK for building production-grade AI agents and multi-agent systems. From a 3-line single agent to complex, stateful, resumable multi-agent graphs — with model-agnostic provider support, streaming, observability, evaluation, and guardrails out of the box.

Quick Start

pip install synth-agent-sdk

from synth import Agent

agent = Agent(model="claude-sonnet-4-5", instructions="You are a helpful assistant.")
result = agent.run("What is the capital of France?")
print(result.text)

Features

• Minimal core — 3 lines to a working agent
• Tools — @tool decorator auto-generates JSON schemas from type hints
• Streaming — typed event stream (TokenEvent, ToolCallEvent, DoneEvent, …)
• Multi-provider — Claude, GPT, Gemini, Ollama, AWS Bedrock via a single model string
• Memory — thread-scoped, persistent (Redis), or semantic (vector) conversation history
• Guards — declarative PII filtering, cost limits, tool-call blocking, custom checks
• Structured output — Pydantic model validation with automatic retry
• Pipeline — chain agents sequentially with optional parallel stages
• Graph — directed-graph workflows with conditional edges, loops, and concurrency
• Agent Teams — orchestrator-coordinated multi-agent collaboration
• Tracing — automatic OpenTelemetry-compatible traces on every run
• Checkpointing — resumable runs with local or Redis-backed state persistence
• Evaluation — built-in eval framework with exact-match and semantic scoring
• CLI — synth dev, synth run, synth eval, synth trace, synth doctor
• AWS AgentCore — deploy to AgentCore with synth deploy --target agentcore

Installation

Most users start here:

pip install synth-agent-sdk[anthropic]     # Anthropic Claude (recommended)

Other options:

pip install synth-agent-sdk[quickstart]    # Claude + GPT (tutorials/demos)
pip install synth-agent-sdk[openai]        # OpenAI GPT only
pip install synth-agent-sdk[google]        # Google Gemini only
pip install synth-agent-sdk[bedrock]       # AWS Bedrock only
pip install synth-agent-sdk[all]           # All providers

Requires Python 3.10+.

If you see a provider error, install the matching extra:

# Error: "Provider package 'anthropic' is not installed"
pip install synth-agent-sdk[anthropic]

CLI

After installing, run synth to see the boot sequence:

synth

Available commands:

synth create agent my-app              # Scaffold agent with tools
synth create multi-agent my-team       # Scaffold team + pipeline
synth create agentcore my-service      # Scaffold AgentCore project
synth dev my_agent.py                  # Local REPL with hot-reload + trace UI
synth run my_agent.py "prompt"         # Execute agent, print result
synth eval my_agent.py --dataset d     # Run evaluation suite
synth trace <run_id>                   # Open trace in browser
synth deploy --target agentcore        # Deploy to AWS AgentCore
synth doctor                           # Check env, credentials, deps

Documentation

See the User Guide for a full walkthrough.

License

MIT