Renew agent API key binding on Base mainnet (requires EIP-712 agent signature)
Part of the Srv D7aoqmh5pdvs7391dcqg server.
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AI agents call cardiac_renew_key to retrieve information from Srv D7aoqmh5pdvs7391dcqg without modifying any data. This is common in research, monitoring, and reporting workflows where the agent needs context before taking action. Because read operations don't change state, they are generally safe to allow without restrictions -- but you may still want rate limits to control API costs.
Even though cardiac_renew_key only reads data, uncontrolled read access can leak sensitive information or rack up API costs. An agent caught in a retry loop could make thousands of calls per minute. A rate limit gives you a safety net without blocking legitimate use.
Read-only tools are safe to allow by default. No rate limit needed unless you want to control costs.
{
"version": "1",
"default": "deny",
"tools": {
"cardiac_renew_key": {}
}
}See the full Srv D7aoqmh5pdvs7391dcqg policy for all 70 tools.
These attack patterns abuse exactly the kind of access cardiac_renew_key gives an agent. Each links to the full case and the policy that stops it:
Other read tools across the catalogue. The same approach applies to each: allow, with a rate cap to control cost.
Renew agent API key binding on Base mainnet (requires EIP-712 agent signature). It is categorised as a Read tool in the Srv D7aoqmh5pdvs7391dcqg MCP Server, which means it retrieves data without modifying state.
Register the Srv D7aoqmh5pdvs7391dcqg MCP server in PolicyLayer and add a rule for cardiac_renew_key: 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 Srv D7aoqmh5pdvs7391dcqg. Nothing to install.
cardiac_renew_key is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the cardiac_renew_key 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 cardiac_renew_key. 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.
cardiac_renew_key is provided by the Srv D7aoqmh5pdvs7391dcqg MCP server (ciprianpater/srv-d7aoqmh5pdvs7391dcqg). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 70 Srv D7aoqmh5pdvs7391dcqg tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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