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Features

Streaming reasoning events

StreamEvent now supports a reasoning type that carries the model's thinking tokens in real time. ReasoningBlock is also added to the ContentBlock union for non-streaming paths. Supported on Anthropic and OpenAI providers. (#174 by @SiMinus)

onAgentStream and onPlanReady hooks

Two new orchestrator hooks (runTeam only): onAgentStream delivers real-time per-token streaming events during agent runs, and onPlanReady fires after the coordinator decomposes the goal into a task DAG -- return false to abort before any agent work starts. (#182, [#181] by @tizerluo; [#184], [#183] by @JackChen-me)

Agent Observation Pipeline: new trace events

plan_ready and agent_stream trace events join the trace pipeline, enabling downstream observers to react to plan generation and streaming agent output. (#188 by @ibrahimkzmv)

AWS Bedrock adapter

New LLM adapter for Amazon Bedrock, supporting the full adapter contract (chat + stream). (#194 by @CodingBangboo)

ToolCallTrace includes input/output

ToolCallTrace now carries the tool's input and output payloads, making it useful for debugging and audit without inspecting the raw conversation. (#124 by @MyPrototypeWhat)

Fixes

  • Strip image blocks before summarize compression to avoid ballooning token cost. (#196 by @MyPrototypeWhat)
  • Preserve tool_use/tool_result pairing during sliding-window truncation, fixing orphaned tool blocks. (#193 by @MyPrototypeWhat)
  • onAgentStream path now forwards the full RunOptions into the streaming runner so onTrace, delegation, and run metadata work during streaming. (#184 by @JackChen-me)
  • onPlanReady abort path now reports the real coordinator token cost instead of zero, and catches thrown callbacks. (#183 by @JackChen-me)

Examples

  • Express customer support pipeline: multi-agent triage, routing, and resolution. (#191 by @CodingBangboo)
  • Personalized interview simulator: dynamic question generation with structured output. (#189 by @mmjwxbc)
  • Incident postmortem DAG: reconstruct timeline from logs and deploys. (#187 by @binghuaren96)

Docs

  • README capability tagline, per-area contributor attribution, and a JSDoc fix. (#190, [#186], [#180] by @JackChen-me)

Install

:::bash
npm install @jackchen_me/open-multi-agent@1.3.1

Thanks to @SiMinus, @tizerluo, @ibrahimkzmv, @CodingBangboo, @MyPrototypeWhat, @mmjwxbc, and @binghuaren96 for the external contributions.

Source: README.md, updated 2026-05-02