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Shay-Deng/README.md

Howie Deng — agent protocols, agent SDKs and open source. Build with intent. Go deep.

Open source   /   Repositories   /   Connect on X


Agent protocols & SDKs

I work on the plumbing that lets AI agents talk to each other: protocol conformance for Agent2Agent (A2A), and fixes in the agent SDKs people build on. I write in Java, Python and TypeScript, and I like small, well-tested changes that are easy to review.

Java Python TypeScript A2A Protocol MCP Spring AI LangChain4j pytest JUnit 5


Featured work


01   /   A2A PROTOCOL CONFORMANCE

Testing agents against the spec, then fixing what the tests find.

Contributing to the A2A Technology Compatibility Kit (a2a-tck) and running it against the reference Python SDK. One run showed that HTTP+JSON error responses were not served with the A2A media type the spec asks for; I traced it to the shared error handler and fixed it in a2a-python.

Protocol specs   JSON-RPC · HTTP+JSON · gRPC   pytest

a2a-python #1446 →   ·   a2a-tck #268   ·   a2a-tck #269



02   /   MERGED UPSTREAM

Small, tested fixes in agent SDKs.

Google ADK: kept empty signed thinking blocks intact when replaying Claude conversation history, so multi-turn tool calls send the model exactly what it returned.

LangChain4j: made StreamingModelRouter signal an error, cancel upstream work and terminate exactly once on invalid demand, and kept native async chat delegation when routing.

Python   Java · Reactive Streams   Regression tests

Google ADK #7500 →   ·   LangChain4j #792   ·   #794

Open source

Merged upstream: AgentScope · Google ADK · LangChain4j
In review: A2A · Strands Agents · LangGraph.js · Spring AI


操千曲而后晓声，观千剑而后识器。
Read deeply. Build thoughtfully.

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  1. langchain4j-community langchain4j-community Public

    Forked from langchain4j/langchain4j-community

    LangChain4j integrations that are maintained by the community

    Java 1