awslabs.lambda-tool-mcp-server

AWS Lambda Tool MCP Server by AWS Labs

An AWS Labs Model Context Protocol (MCP) server for AWS Lambda Tools

Live Registry Versionv2.1.1Previous: v2.1.0Published 2026-09-08

Stability Grade

B+ (86/100)

90-Day Velocity

5 releases

Moderate cadence

Dependencies

3 direct

PYPI manifest

License

Apache-2.0

Verified on PYPI

Recommended Exact Pin: uvx awslabs.lambda-tool-mcp-server@2.1.1

PYPI Registry ->GitHub Repo ->

TL;DR Verdict & Quick Citation Summary (2026-10-24)Source: AgentBreakWatch Live PYPI Index

AWS Lambda Tool MCP Server (awslabs.lambda-tool-mcp-server) is currently at v2.1.1 on PYPI (published 2026-09-08), with a 90-day stability score of 86/100 (B+) and MEDIUM schema drift risk across 5 releases in the past 90 days. Requires FastMCP / MCP Python SDK v2+ tool schema validation; unpinned uvx awslabs.lambda-tool-mcp-server@latest deployments risk parameter drift across invoke_lambda_function and list_lambda_functions. Production teams should pin uvx awslabs.lambda-tool-mcp-server@2.1.1 rather than using unpinned @latest tags.

Breaking Changes & Tool Schema Drift Analysis

Requires FastMCP / MCP Python SDK v2+ tool schema validation; unpinned uvx awslabs.lambda-tool-mcp-server@latest deployments risk parameter drift across invoke_lambda_function and list_lambda_functions.

Watched Exports / MCP Tool Signatures:

invoke_lambda_functionlist_lambda_functions

Before (Deprecated / Unpinned Pattern)

"awslabs-lambda-mcp": {
  "command": "uvx",
  "args": ["awslabs.lambda-tool-mcp-server"]
}

After (Verified v2.1.1 Pattern)

"awslabs-lambda-mcp": {
  "command": "uvx",
  "args": ["awslabs.lambda-tool-mcp-server@2.1.1"],
  "env": { "FASTMCP_LOG_LEVEL": "ERROR" }
}

Frequently Asked Questions: awslabs.lambda-tool-mcp-server

What is the latest version of awslabs.lambda-tool-mcp-server on PYPI?

As of 2026-10-24, the latest stable version of awslabs.lambda-tool-mcp-server (AWS Lambda Tool MCP Server by AWS Labs) on PYPI is v2.1.1, published on 2026-09-08. It has shipped 5 releases in the last 90 days.

Does awslabs.lambda-tool-mcp-server v2.1.1 have breaking changes or MCP schema drift risk?

awslabs.lambda-tool-mcp-server currently carries a MEDIUM schema drift risk rating with a Stability Score of 86/100 (Grade B+). Requires FastMCP / MCP Python SDK v2+ tool schema validation; unpinned uvx awslabs.lambda-tool-mcp-server@latest deployments risk parameter drift across invoke_lambda_function and list_lambda_functions.

How do I safely pin awslabs.lambda-tool-mcp-server in production?

Avoid unpinned @latest tags in production agent configs. Pin the exact verified version using `uvx awslabs.lambda-tool-mcp-server@2.1.1` and monitor invoke_lambda_function, list_lambda_functions for parameter or schema changes.

30-Min Registry & Schema Poller

Get Instant Breaking-Change Alerts for awslabs.lambda-tool-mcp-server

We poll PYPI and awslabs/mcp every 30 minutes. Get an email with the exact diff when awslabs.lambda-tool-mcp-server ships a breaking release beyond v2.1.1.