Create a Job that escrows USDC payment until a Provider delivers and an Evaluator approves. Use this for A2A service delivery (vs send_payment for direct transfers). Confirm budget + provider with user first. Provider must have a CardZero wallet (Sprint 9 MVP requirement).
AI agents use create_job to commit financial operations through Cardzero — usually the final step of a payment, billing, or trading workflow. A call moves real money.
This tool commits USDC funds into escrow on a smart contract, which is a financial obligation. Even though funds are held in escrow rather than immediately transferred, real money is locked and at risk. Misuse could result in loss of user funds if an incorrect provider or budget is specified, making this a critical financial operation.
From the tool's definition 'escrows USDC payment', 'Confirm budget + provider with user first', 'A2A service delivery'
Attacks that exploit this kind of access
Create a Job that escrows USDC payment until a Provider delivers and an Evaluator approves. Use this for A2A service delivery (vs send_payment for direct transfers). Confirm budget + provider with user first. Provider must have a CardZero wallet (Sprint 9 MVP requirement). It is categorised as a Financial tool in the Cardzero MCP Server, which means it involves financial transactions. Block by default and require explicit approval.
Register the Cardzero MCP server in PolicyLayer and add a rule for create_job: 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 Cardzero. Nothing to install.
create_job 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 create_job 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 create_job. 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.
create_job is provided by the Cardzero MCP server (mrocker/cardzero-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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