pt_defederate
Full defederation: block + unfollow + purge cached videos from a remote instance. QUEUED — requires operator confirmation.
This record as markdown: /tools/kh0pper-crow/pt-defederate.md
What pt_defederate does on Crow
AI agents call pt_defederate to permanently remove resources in Crow, typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Why pt_defederate is rated Critical
Purging cached videos and defederating an instance are irreversible actions that permanently remove data and break established connections. Although the tool is queued and requires operator confirmation (mitigating factor), the core operation is destructive. This is more severe than Write (which is reversible) because purged data cannot be recovered automatically.
From the tool's definition 'block + unfollow + purge cached videos from a remote instance' — the tool irreversibly purges cached data and severs federation relationships, effects that cannot be undone without manual intervention.
Attacks that exploit this kind of access
The rule that runs pt_defederate safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Crow, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For pt_defederate, this is the rule to start with:
pt_defederate is removed from the agent's tool list entirely, so the agent never calls it. The rest of the server keeps working.
The button opens the PolicyLayer dashboard: create your workspace, connect Crow, apply this rule, and every pt_defederate call is checked against it from then on.
Questions about pt_defederate
Full defederation: block + unfollow + purge cached videos from a remote instance. QUEUED — requires operator confirmation. It is categorised as a Destructive tool in the Crow MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Crow MCP server in PolicyLayer and add a rule for pt_defederate: 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 Crow. Nothing to install.
pt_defederate is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the pt_defederate 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 pt_defederate. 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.
pt_defederate is provided by the Crow MCP server (kh0pper/crow). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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