feat: Add Merge Agent Handler tool

[gilfeig]

This tool is a wrapper around the Merge Agent Handler platform and gives your agent access to third-party tools and integrations via the Model Context Protocol (MCP). Merge Agent Handler securely manages authentication, permissions, and monitoring of all tool interactions across platforms like Linear, Jira, Slack, GitHub, and many more.

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Note

Adds MergeAgentHandlerTool to run Merge Agent Handler MCP tools, with exports, docs, and comprehensive tests.

• Tools:
  • MergeAgentHandlerTool added (tools/merge_agent_handler_tool/merge_agent_handler_tool.py): executes MCP tools/call, fetches tool schemas via tools/list, builds dynamic Pydantic arg schemas, supports from_tool_name and from_tool_pack, AGENT_HANDLER_API_KEY auth, optional base_url, and session handling.
• Exports:
  • Exposed MergeAgentHandlerTool in crewai_tools/tools/__init__.py and top-level crewai_tools/__init__.py.
• Docs:
  • New README with install, credentials setup, examples (single tool, tool pack, custom env), and API reference.
• Tests:
  • New tests/tools/merge_agent_handler_tool_test.py covering initialization, URL/headers, JSON-RPC request/response handling, error paths, arg passing, and constructors.

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[lorenzejay]

LGTM!

[lorenzejay]

@gilfeig lets sync main and address the linter and we should be gtg

[gilfeig]

@gilfeig lets sync main and address the linter and we should be gtg

Hey @lorenzejay - it seems like a few tests are flaky/failing sometimes. Lint passed this time, but a random test unrelated failed. I can't kick off workflows again since it says it needs approval.