jamjet-labs/jamjet

What's New in v0.3.0

Coordinator Node — Dynamic Agent Routing

Route tasks to the best agent at runtime. The Coordinator discovers agents from the registry, scores them on capability, cost, and latency, and selects the best fit. When top candidates are close, an optional LLM tiebreaker reasons about the best choice. Every routing decision is captured in the durable event log.

• CoordinatorNode in workflow graphs
• DefaultCoordinatorStrategy with 5-dimension structured scoring
• Custom strategies via Python subclassing
• Strategy server (REST bridge) for Rust-Python communication

Agent-as-Tool — Three Invocation Modes

Wrap any registered agent as a callable tool:

• Sync — fire-and-forget for quick tasks
• Streaming — progress chunks with budget-aware early termination
• Conversational — multi-turn exchanges with turn limits

Compile-Time Auto Expansion

Write agent: "auto" and the compiler inserts a Coordinator node automatically.

Agentic Design Patterns Guide

Six orchestration patterns documented: Single Agent, Sequential Pipeline, Parallel Fan-Out, Loop & Critic, Coordinator, Agent-as-Tool.

Google ADK Comparison

Comparison table now includes Google ADK.

Other Improvements

• 9 new event types for coordinator and agent-tool observability
• 4 new REST API endpoints
• 3 working examples
• Pre-commit config for cargo fmt, clippy, ruff, mypy
• Fixed 13 pre-existing mypy errors in eval/scorers.py

Install / Upgrade

pip install --upgrade jamjet