Medium Risk

gateway_resource_policy_put

Create or update a resource-based policy on a gateway. COST WARNING: The policy itself is free, but misconfigured policies can expose a gateway to unintended principals — review carefully before applying. Creates or replaces the resource policy attached to the specified gateway. Use this to gra...

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

AI agents use gateway_resource_policy_put to create or modify resources in AWS Bedrock AgentCore MCP Server. Write operations carry medium risk because an autonomous agent could trigger bulk unintended modifications. Rate limits prevent a single agent session from making hundreds of changes in rapid succession. Argument validation ensures the agent passes expected values.

Without a policy, an AI agent could call gateway_resource_policy_put repeatedly, creating or modifying resources faster than any human could review. Intercept's rate limiting ensures write operations happen at a controlled pace, and argument validation catches malformed or unexpected inputs before they reach AWS Bedrock AgentCore MCP Server.

Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.

aws-bedrock-agentcore-mcp-server.yaml
tools:
  gateway_resource_policy_put:
    rules:
      - action: allow
        rate_limit:
          max: 30
          window: 60

See the full AWS Bedrock AgentCore MCP Server policy for all 122 tools.

Tool Name gateway_resource_policy_put
Category Write
Risk Level Medium

View all 122 tools →

Agents calling write-class tools like gateway_resource_policy_put have been implicated in these attack patterns. Read the full case and prevention policy for each:

Browse the full MCP Attack Database →

Other tools in the Write risk category across the catalogue. The same policy patterns (rate-limit, validate) apply to each.

What does the gateway_resource_policy_put tool do? +

Create or update a resource-based policy on a gateway. COST WARNING: The policy itself is free, but misconfigured policies can expose a gateway to unintended principals — review carefully before applying. Creates or replaces the resource policy attached to the specified gateway. Use this to grant cross-account access or to restrict access beyond what inbound authorization provides.. It is categorised as a Write tool in the AWS Bedrock AgentCore MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on gateway_resource_policy_put? +

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

What risk level is gateway_resource_policy_put? +

gateway_resource_policy_put is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit gateway_resource_policy_put? +

Yes. Add a rate_limit block to the gateway_resource_policy_put 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 gateway_resource_policy_put completely? +

Set action: deny in the Intercept policy for gateway_resource_policy_put. 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 gateway_resource_policy_put? +

gateway_resource_policy_put is provided by the AWS Bedrock AgentCore MCP Server MCP server (awslabs.amazon-bedrock-agentcore-mcp-server). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Let agents act without letting them run wild.

Deterministic policy on every MCP tool call. Per-identity grants. Full audit log.

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