Retract (soft delete) a knowledge entry you contributed. Removes it from search results. This cannot be undone.
Part of the Prior server.
Free to start. No card required.
AI agents may call prior_retract to permanently remove or destroy resources in Prior. Without a policy, an autonomous agent could delete critical data in a loop with no way to undo the damage. PolicyLayer blocks destructive tools by default and requires explicit human approval before enabling them.
Without a policy, an AI agent could call prior_retract in a loop, permanently destroying resources in Prior. There is no undo for destructive operations. PolicyLayer blocks this tool by default and only allows it when a human explicitly approves the action.
Destructive tools permanently remove data. Block by default. Only enable with explicit approval workflows.
{
"version": "1",
"default": "deny",
"hide": [
"prior_retract"
]
}See the full Prior policy for all 10 tools.
These attack patterns abuse exactly the kind of access prior_retract gives an agent. Each links to the full case and the policy that stops it:
Other destructive tools across the catalogue. The same approach applies to each: deny by default, or require human approval.
Retract (soft delete) a knowledge entry you contributed. Removes it from search results. This cannot be undone.. It is categorised as a Destructive tool in the Prior MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Prior MCP server in PolicyLayer and add a rule for prior_retract: 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 Prior. Nothing to install.
prior_retract 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 prior_retract 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 prior_retract. 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.
prior_retract is provided by the Prior MCP server (https://api.cg3.io/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 10 Prior tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
4,600+ MCP servers and 31,000+ tools scanned and risk-classified.