AI agents use lithtrix_agent_vouch_revoke 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.
Revoking a vouch modifies persistent state by removing a previously created vouch entry. While destructive-sounding, vouches can presumably be re-granted, making this a reversible write operation rather than truly irreversible destruction. Misuse could undermine agent credibility scores across the platform, hence medium severity.
From the tool's definition 'revoke your skill vouch' — removes/revokes a previously granted vouch record
Attacks that exploit this kind of access
POST /v1/agents/{target_agent_id}/vouch/revoke — revoke your skill vouch (Bearer = voucher only). 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.
Register the Lithtrix MCP server in PolicyLayer and add a rule for lithtrix_agent_vouch_revoke: 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.
lithtrix_agent_vouch_revoke is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the lithtrix_agent_vouch_revoke 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.
Set action: deny in the PolicyLayer policy for lithtrix_agent_vouch_revoke. 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.
lithtrix_agent_vouch_revoke 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.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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