intentRevokeApproval
Revoke (set to zero) an ERC-20 token approval for a specific spender. This is equivalent to calling approve(spender, 0).
This record as markdown: /tools/nanidao-agentek/intentrevokeapproval.md
What intentRevokeApproval does on Agentek Eth
AI agents call intentRevokeApproval to permanently remove resources in Agentek Eth, typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Why intentRevokeApproval is rated Critical
An AI agent that decides to call intentRevokeApproval doesn't hesitate, doesn't double-check, and doesn't stop at one. Whatever it removes from Agentek Eth is gone. There is no undo for destructive operations.
Attacks that exploit this kind of access
The rule that runs intentRevokeApproval safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Agentek Eth, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For intentRevokeApproval, this is the rule to start with:
intentRevokeApproval 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 Agentek Eth, apply this rule, and every intentRevokeApproval call is checked against it from then on.
Questions about intentRevokeApproval
Revoke (set to zero) an ERC-20 token approval for a specific spender. This is equivalent to calling approve(spender, 0). It is categorised as a Destructive tool in the Agentek Eth MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Agentek Eth MCP server in PolicyLayer and add a rule for intentRevokeApproval: 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 Agentek Eth. Nothing to install.
intentRevokeApproval 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 intentRevokeApproval 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 intentRevokeApproval. 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.
intentRevokeApproval is provided by the Agentek Eth MCP server (nanidao/agentek). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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