lithtrix_agent_vouch · Lithtrix MCP: Risk & Policy

WHAT IT DOES

What lithtrix_agent_vouch does on Lithtrix

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

WHY IT NEEDS A POLICY

Why lithtrix_agent_vouch needs a policy

This tool creates a vouch record on another agent, which is a write operation that modifies persistent reputation/credibility data. It is reversible (the sibling tool lithtrix_agent_vouch_revoke exists to undo it), so it does not qualify as Destructive. Misuse could affect agent credibility scoring across the shared Commons pool, giving it medium severity.

From the tool's definition POST /v1/agents/{target_agent_id}/vouch — vouch for a skill on another agent

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

lithtrix_agent_vouch Rate-limited

lithtrix_agent_vouch 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": {
    "lithtrix_agent_vouch": {
      "limits": [
        {
          "counter": "lithtrix_agent_vouch_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 Lithtrix, so you can run agents against it safely.

FAQ

Questions about lithtrix_agent_vouch

What does the lithtrix_agent_vouch tool do? +

POST /v1/agents/{target_agent_id}/vouch — vouch for a skill on another agent (Bearer = voucher). It is categorised as a Write tool in the Lithtrix MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on lithtrix_agent_vouch? +

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

What risk level is lithtrix_agent_vouch? +

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

Can I rate-limit lithtrix_agent_vouch? +

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

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

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

// THE FULL RECORD

lithtrix_agent_vouch is one line of Lithtrix's registry record.

The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.

Teams ship this data inside their own products. See what a licence covers →