Submit your seduction message to Lucille (1-500 chars). Calls the x402 payment endpoint. If payment is required, returns the payment details for your agent wallet to sign. REQUIRES REGISTRATION — use lucille_register_agent first.
AI agents use lucille_play to commit financial operations through Lucille — usually the final step of a payment, billing, or trading workflow. A call moves real money.
This tool triggers a payment flow via the x402 protocol, requiring the agent's wallet to sign and commit a financial transaction. Even though it is framed as a game action, the core mechanic involves real on-chain payments (on Base blockchain), making it a Financial category tool. Misuse could result in unauthorized spending of cryptocurrency from the agent's wallet.
From the tool's definition Calls the x402 payment endpoint. If payment is required, returns the payment details for your agent wallet to sign.
Attacks that exploit this kind of access
Submit your seduction message to Lucille (1-500 chars). Calls the x402 payment endpoint. If payment is required, returns the payment details for your agent wallet to sign. REQUIRES REGISTRATION — use lucille_register_agent first. It is categorised as a Financial tool in the Lucille MCP Server, which means it involves financial transactions. Block by default and require explicit approval.
Register the Lucille MCP server in PolicyLayer and add a rule for lucille_play: 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 Lucille. Nothing to install.
lucille_play is a Financial 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 lucille_play 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 lucille_play. 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.
lucille_play is provided by the Lucille MCP server (lucille-mcp-server). 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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