Cancel a pending signing request
AI agents call cancel_request to permanently remove resources in Paraph — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Cancelling a signing request is an irreversible action that terminates an active e-signature workflow. Once cancelled, the signing request cannot be restored or resumed, making it a destructive operation. The blast radius is high because it could disrupt legally significant document signing processes for all involved parties.
From the tool's definition Cancel a pending signing request
Attacks that exploit this kind of access
Cancel a pending signing request. It is categorised as a Destructive tool in the Paraph MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Paraph MCP server in PolicyLayer and add a rule for cancel_request: 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 Paraph. Nothing to install.
cancel_request 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 cancel_request 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 cancel_request. 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.
cancel_request is provided by the Paraph MCP server (servants-of-the-server-fire/paraph-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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