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awslabs-aws-iac-mcp-server

library1.0.19pypypiunverified

An MCP (Model Context Protocol) server for Infrastructure as Code (IaC) that provides CloudFormation template validation, compliance checking, and deployment troubleshooting. Version 1.0.17, released irregularly on GitHub (awslabs/mcp). Requires Python >=3.10.

aws devops llm-agents

pip install awslabs-aws-iac-mcp-server

github ↗package ↗homepage ↗docs ↗changelog ↗

INSTALL

IMPORT

SIG · AWSLABS-AWS-IAC-MC

awslabs-aws-iac-mcp-server

awspythonv1.0.19

Install

24.1s avg

Import

—

Disk

325MB

Pass rate

4/ 10

Env Coverage4 / 10

glibc

3.9–3.13

musl

3.9–3.13

Install & Compatibility

Where this runs

tested against v1.0.19 · pip install

no network on importno background threads

Install × environment matrix

Each cell = how many times install + import succeeded across repeated harness runs. Partial = flaky.
glibc = Debian/Ubuntu slim · musl = Alpine Linux

musl

glibc

py 3.10

✕ build_error

✓ 26s

py 3.11

✕ build_error

✓ 24.4s

py 3.12

✕ build_error

✓ 22.8s

py 3.13

✕ build_error

✓ 23s

py 3.9

✕ build_error

325MB installed

● package 325MB

Code

Verified usage

Verified import paths — ran on the pinned version, not inferred.

mcp

✓ from awslabs.aws_iac_mcp_server import mcp

✗ from awslabs_aws_iac_mcp_server import mcp

Run the MCP server. Requires AWS credentials (e.g., AWS_ACCESS_KEY_ID, AWS_SECRET_ACCESS_KEY) configured in environment or ~/.aws/credentials.

from awslabs_aws_iac_mcp_server import mcp if __name__ == "__main__": mcp.run()

Debug

Known issues

breakingmcp.run() will block and start an MCP server on stdio by default. Do not call mcp.run() in an async context without understanding the I/O model.

fix

Run only as a standalone script, or use mcp.run(transport='stdio') explicitly.

affects: all

gotchaThe server expects AWS credentials with CloudFormation DescribeStacks, ValidateTemplate, and GetTemplate permissions. Missing permissions cause cryptic boto3 errors.

fix

Attach AWS managed policy 'AWSCloudFormationReadOnlyAccess' or equivalent custom policy.

affects: all

deprecatedThe package uses the deprecated 'mcp' library (0.x) under the hood. Future versions may migrate to the new 'mcp' library (1.x).

fix

Watch the GitHub repo for migration guides when mcp 1.0 is released.

affects: 1.x

Upgrade

Version history

1.0.19latest on PyPI · released May 8, 2026

Audit

Dependencies

boto3requiredAWS SDK for CloudFormation and STS calls

mcprequiredMCP protocol server framework

Agent activity

30 hits · last 30 days

node

OpenAI (training)

Resources

githubhttps://github.com/awslabs/mcp ↗

packagehttps://pypi.org/project/awslabs-aws-iac-mcp-server/ ↗

homepagehttps://awslabs.github.io/mcp/ ↗

docshttps://awslabs.github.io/mcp/servers/aws-iac-mcp-server/ ↗

changeloghttps://github.com/awslabs/mcp/blob/main/src/aws-iac-mcp-server/CHANGELOG.md ↗