AWS KB Retrieval MCP Server
Query Amazon Bedrock Knowledge Bases for RAG-style document retrieval.
Installation
npx -y @modelcontextprotocol/server-aws-kb-retrievalclaude_desktop_config.json
{
"mcpServers": {
"server-aws-kb-retrieval": {
"command": "npx",
"args": [
"-y",
"@modelcontextprotocol/server-aws-kb-retrieval"
],
"env": {
"AWS_ACCESS_KEY_ID": "your-access-key-id",
"AWS_SECRET_ACCESS_KEY": "your-secret-access-key",
"AWS_REGION": "us-east-1",
"KNOWLEDGE_BASE_ID": "your-kb-id"
}
}
}
}Environment Variables
| Variable | Required | Description |
|---|---|---|
AWS_ACCESS_KEY_ID | ✓ Required | AWS access key ID with Bedrock permissions. |
AWS_SECRET_ACCESS_KEY | ✓ Required | AWS secret access key paired with the access key ID. |
AWS_REGION | ✓ Required | AWS region where the Knowledge Base is deployed. |
KNOWLEDGE_BASE_ID | ✓ Required | The Amazon Bedrock Knowledge Base ID to query. |
Prerequisites
- Node.js 18 or later
- Required API keys — see the Environment Variables table above
Common Errors
- Server not found / spawn error — ensure Node.js is on your PATH and the package is accessible via npx.
- Permission denied — check that the path in args is readable by the process running your AI client.
- Authentication failed — verify your API key is set correctly in the env block.