ecp-sdk 0.3.0

The official Python SDK for the Evaluation Context Protocol (ECP).

ECP Python SDK

This is the SDK for building agents that comply with the Evaluation Context Protocol (ECP).

Install

pip install "ecp-sdk==0.2.9"

The latest stable PyPI release is now 0.2.9. Use the install command above to install the matching package version.

For LangChain adaptor support:

pip install "ecp-sdk[langchain]==0.2.9"

For CrewAI adaptor support:

pip install "ecp-sdk[crewai]==0.2.9"

For LlamaIndex adaptor support:

pip install "ecp-sdk[llamaindex]==0.2.9"

For PydanticAI adaptor support:

pip install "ecp-sdk[pydanticai]==0.2.9"

Usage

import ecp

@ecp.agent
class MyAgent:
    ...

Streamable HTTP

Agents can also run as an ECP Streamable HTTP server:

if __name__ == "__main__":
    ecp.serve_http(MyAgent(), host="127.0.0.1", port=8765, path="/ecp")

The endpoint accepts JSON-RPC POST requests at /ecp. It returns JSON for requests, 202 Accepted for notifications, and 405 Method Not Allowed for GET SSE streams until ECP defines server-initiated messages.

Links

• Documentation: https://evaluationcontextprotocol.io/
• Repository: https://github.com/evaluation-context-protocol/ecp
• Issues: https://github.com/evaluation-context-protocol/ecp/issues