AWS CDK MCP Server

MCP server for AWS Cloud Development Kit (CDK) best practices, infrastructure as code patterns, and security compliance with CDK Nag.

- Prescriptive patterns with AWS Solutions Constructs and GenAI CDK libraries
- Structured decision flow for choosing appropriate implementation approaches
- Security automation through CDK Nag integration and Lambda Powertools

- Work with CDK Nag rules for security and compliance
- Explain specific CDK Nag rules with AWS Well-Architected guidance
- Check if CDK code contains Nag suppressions that require human review

- Search and discover AWS Solutions Constructs patterns
- Find recommended patterns for common architecture needs
- Get detailed documentation on Solutions Constructs

- Search for GenAI CDK constructs by name or type
- Discover specialized constructs for AI/ML workloads
- Get implementation guidance for generative AI applications

- Access comprehensive documentation for AWS Lambda layers
- Get code examples for generic Lambda layers and Python-specific layers
- Retrieve directory structure information and implementation best practices
- Seamless integration with AWS Documentation MCP Server for detailed documentation

- Use this tool when creating Bedrock Agents with Action Groups that use Lambda functions
- Streamline the creation of Bedrock Agent schemas
- Convert code files to compatible OpenAPI specifications

- Requirements: Your Lambda function must useBedrockAgentResolverfrom AWS Lambda Powertools
- Lambda Dependencies: If schema generation fails, a fallback script will be generated. If you see error messages about missing dependencies, install them and then run the script again.
- Integration: Use the generated schema withbedrock.ApiSchema.fromLocalAsset()in your CDK code

This diagram provides a comprehensive view of the recommended CDK implementation workflow:

graph TD Start([Start]) --> A["CDKGeneralGuidance"] A --> Init["cdk init app"] Init --> B{Choose Approach} B -->|"Common Patterns"| C1["GetAwsSolutionsConstructPattern"] B -->|"GenAI Features"| C2["SearchGenAICDKConstructs"] B -->|"Custom Needs"| C3["Custom CDK Code"] C1 --> D1["Implement Solutions Construct"] C2 --> D2["Implement GenAI Constructs"] C3 --> D3["Implement Custom Resources"] %% Bedrock Agent with Action Groups specific flow D2 -->|"For Bedrock Agents<br/>with Action Groups"| BA["Create Lambda with<br/>BedrockAgentResolver"] %% Schema generation flow BA --> BS["GenerateBedrockAgentSchema"] BS -->|"Success"| JSON["openapi.json created"] BS -->|"Import Errors"| BSF["Tool generates<br/>generate_schema.py"] BSF -->|"Missing dependencies?"| InstallDeps["Install dependencies"] InstallDeps --> BSR["Run script manually:<br/>python generate_schema.py"] BSR --> JSON["openapi.json created"] %% Use schema in Agent CDK JSON --> AgentCDK["Use schema in<br/>Agent CDK code"] AgentCDK --> D2 %% Conditional Lambda Powertools implementation D1 & D2 & D3 --> HasLambda{"Using Lambda<br/>Functions?"} HasLambda --> UseLayer{"Using Lambda<br/>Layers?"} UseLayer -->|"Yes"| LLDP["LambdaLayerDocumentationProvider"] HasLambda -->|"No"| SkipL["Skip"] %% Rest of workflow LLDP["LambdaLayerDocumentationProvider"] --> Synth["cdk synth"] SkipL --> Synth Synth --> Nag{"CDK Nag<br/>warnings?"} Nag -->|Yes| E["ExplainCDKNagRule"] Nag -->|No| Deploy["cdk deploy"] E --> Fix["Fix or Add Suppressions"] Fix --> CN["CheckCDKNagSuppressions"] CN --> Synth %% Styling with darker colors classDef default fill:#424242,stroke:#ffffff,stroke-width:1px,color:#ffffff; classDef cmd fill:#4a148c,stroke:#ffffff,stroke-width:1px,color:#ffffff; classDef tool fill:#01579b,stroke:#ffffff,stroke-width:1px,color:#ffffff; classDef note fill:#1b5e20,stroke:#ffffff,stroke-width:1px,color:#ffffff; classDef output fill:#006064,stroke:#ffffff,stroke-width:1px,color:#ffffff; classDef decision fill:#5d4037,stroke:#ffffff,stroke-width:1px,color:#ffffff; class Init,Synth,Deploy,BSR cmd; class A,C1,C2,BS,E,CN,LLDP tool; class JSON output; class HasLambda,UseLayer,Nag decision;

- CDKGeneralGuidance: Get prescriptive advice for building AWS applications with CDK
- GetAwsSolutionsConstructPattern: Find vetted architecture patterns combining AWS services
- SearchGenAICDKConstructs: Discover GenAI CDK constructs by name or features
- GenerateBedrockAgentSchema: Create OpenAPI schemas for Bedrock Agent action groups
- LambdaLayerDocumentationProvider: Access documentation for Lambda layers implementation
- ExplainCDKNagRule: Get detailed guidance on CDK Nag security rules
- CheckCDKNagSuppressions: Validate CDK Nag suppressions in your code

- CDK Nag Rules: Access rule packs viacdk-nag://rules/{rule_pack}
- AWS Solutions Constructs: Access patterns viaaws-solutions-constructs://{pattern_name}
- GenAI CDK Constructs: Access documentation viagenai-cdk-constructs://{construct_type}/{construct_name}
- Lambda Powertools: Get guidance on Lambda Powertools vialambda-powertools://{topic}
- InstalluvfromAstralor theGitHub README
- Install Python usinguv python install 3.10
- Install AWS CDK CLI usingnpm install -g aws-cdk(Note: The MCP server itself doesn't use the CDK CLI directly, but it guides users through CDK application development that requires the CLI)

{ "mcpServers": { "awslabs.cdk-mcp-server": { "command": "uvx", "args": ["awslabs.cdk-mcp-server@latest"], "env": { "FASTMCP_LOG_LEVEL": "ERROR" }, "disabled": false, "autoApprove": [] } } }

or docker after a successfuldocker build -t awslabs/cdk-mcp-server .:

{ "mcpServers": { "awslabs.cdk-mcp-server": { "command": "docker", "args": [ "run", "--rm", "--interactive", "--env", "FASTMCP_LOG_LEVEL=ERROR", "awslabs/cdk-mcp-server:latest" ], "env": {}, "disabled": false, "autoApprove": [] } } }

When using this MCP server, you should consider:

- Reviewing all CDK Nag warnings and errors manually
- Fixing security issues rather than suppressing them whenever possible
- Documenting clear justifications for any necessary suppressions
- Using the CheckCDKNagSuppressions tool to verify no unauthorized suppressions exist

Before applying CDK NAG Suppressions, you should consider conducting your own independent assessment to ensure that your use would comply with your own specific security and quality control practices and standards, as well as the local laws, rules, and regulations that govern you and your content.

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