contribute_solution · Hivemind MCP: Risk & Policy

WHAT IT DOES

What contribute_solution does on Hivemind MCP

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

WHY IT NEEDS A POLICY

Why contribute_solution needs a policy

This tool creates/adds new content to a shared knowledge base. It is a write operation (submitting/creating a new record), and while it affects a community-shared resource (16k+ solutions), submissions can typically be reviewed or removed, making it reversible. The blast radius is medium because a malicious or incorrect submission could pollute a shared knowledge base used by many users.

From the tool's definition Submit a new solution to the hivemind knowledge base

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

contribute_solution Rate-limited

contribute_solution 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": {
    "contribute_solution": {
      "limits": [
        {
          "counter": "contribute_solution_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 Hivemind MCP, so you can run agents against it safely.

FAQ

Questions about contribute_solution

What does the contribute_solution tool do? +

Submit a new solution to the hivemind knowledge base. It is categorised as a Write tool in the Hivemind MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on contribute_solution? +

Register the Hivemind MCP server in PolicyLayer and add a rule for contribute_solution: 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 Hivemind MCP. Nothing to install.

What risk level is contribute_solution? +

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

Can I rate-limit contribute_solution? +

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

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

contribute_solution is provided by the Hivemind MCP server (kevthetech143/hivemind-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.