capture_idea · Metis Public Health MCP: Risk & Policy

WHAT IT DOES

What capture_idea does on Metis Public Health

AI agents use capture_idea to create or update resources in Metis Public Health — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Metis Public Health environment.

WHY IT NEEDS A POLICY

Why capture_idea needs a policy

Based on the tool name alone, 'capture_idea' most likely creates or stores a new idea entry, similar in nature to sibling tools like 'add_journal_entry' and 'add_memory_entry' which are Write operations. However, with no description available, confidence is low. Classified as Write at medium severity since storing data is reversible but could capture sensitive information.

From the tool's definition Tool name is 'capture_idea'; description is empty or uninformative.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

capture_idea Rate-limited

capture_idea stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "capture_idea": {
      "limits": [
        {
          "counter": "capture_idea_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Metis Public Health, so you can run agents against it safely.

FAQ

Questions about capture_idea

What does the capture_idea tool do? +

capture_idea. It is categorised as a Write tool in the Metis Public Health MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on capture_idea? +

Register the Metis Public Health MCP server in PolicyLayer and add a rule for capture_idea: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Metis Public Health. Nothing to install.

What risk level is capture_idea? +

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

Can I rate-limit capture_idea? +

Yes. Add a rate_limit block to the capture_idea rule in your PolicyLayer 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 capture_idea completely? +

Set action: deny in the PolicyLayer policy for capture_idea. 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 capture_idea? +

capture_idea is provided by the Metis Public Health MCP server (sveritg/metis_ph). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.