MCP Tool Reference Low Risk

bedrock_kb_retrieve

Query knowledge bases for relevant information

Part of the AWS MCP server. Enforce policies on this tool with Intercept, the open-source MCP proxy.

awslabs/mcp Other

WHEN AI AGENTS USE THIS TOOL

AI agents call bedrock_kb_retrieve to perform operations in AWS. While the risk category is not fully classified, applying a rate limit gives you visibility into how often the tool is called and prevents unexpected bursts of activity from autonomous agents.

WHY ENFORCE A POLICY ON BEDROCK_KB_RETRIEVE

Applying a policy to bedrock_kb_retrieve gives you an audit trail of every call an AI agent makes. Even for low-risk tools, visibility into agent behaviour helps you debug issues, optimise workflows, and maintain compliance with your organisation's security requirements.

RECOMMENDED POLICY

Apply a rate limit to control usage and monitor for unexpected behaviour.

aws.yaml 
tools:
  bedrock_kb_retrieve:
    rules:
      - action: allow
        rate_limit:
          max: 60
          window: 60

See the full AWS policy for all 55 tools.

DETAILS

Tool Name

bedrock_kb_retrieve

Category

Other

MCP Server

AWS MCP Servers

Risk Level

Low

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FREQUENTLY ASKED QUESTIONS

What does the bedrock_kb_retrieve tool do?

Query knowledge bases for relevant information. It is categorised as a Other tool in the AWS MCP Servers, which means it performs auxiliary operations.

How do I enforce a policy on bedrock_kb_retrieve?

Add a rule in your Intercept YAML policy under the tools section for bedrock_kb_retrieve. You can allow, deny, rate-limit, or validate arguments. Then run Intercept as a proxy in front of the AWS MCP server.

What risk level is bedrock_kb_retrieve?

bedrock_kb_retrieve is a Other tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit bedrock_kb_retrieve?

Yes. Add a rate_limit block to the bedrock_kb_retrieve rule in your Intercept policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block bedrock_kb_retrieve completely?

Set action: deny in the Intercept policy for bedrock_kb_retrieve. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides bedrock_kb_retrieve?

bedrock_kb_retrieve is provided by the AWS MCP server (awslabs/mcp). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.

ENFORCE POLICIES ON AWS

Open source. One binary. Zero dependencies.

VIEW ON GITHUB Full AWS policy →