Releases · strands-compose/sdk-python

v0.1.0 — 2026-03-23

Initial public release of strands-compose — declarative multi-agent orchestration for strands-agents.

YAML-first configuration — define models, agents, tools, hooks, MCP servers, and orchestration topology in a single YAML file
Full YAML power — environment variable interpolation (${VAR:-default}), anchors (&ref / *ref), x- scratch-pad keys, and multi-file config merging
Multi-model support — Bedrock, OpenAI, Ollama, Gemini; swap provider with one line
MCP servers & clients — launch local Python servers, connect to remote HTTP endpoints, or spawn stdio subprocesses; lifecycle management with startup ordering, readiness polling, and graceful shutdown
Orchestration modes — Delegate (agent-as-tool), Swarm (peer handoffs), Graph (DAG pipelines) — arbitrarily nestable
Event streaming — unified async event queue across any orchestration depth (tokens, tool calls, handoffs, completions)
Session persistence — file, S3, or Bedrock AgentCore Memory backends; agents remember across restarts
Custom agent factories — plug in your own Agent subclass or factory via the type: key
Hooks — lifecycle callbacks (before_invoke, after_invoke, etc.) declared in YAML and implemented in Python
load() API — single entry point that resolves, validates, and wires the full agent system; returns plain strands objects with no wrappers