ai.safe4/safe4

safe4

Tests an AI agent's purchase against the task it was given. Paid per call in USDC via x402.

1.0.0
Version
remote
Transport
2
Tools

Security review

Review passed

Reviewed Jan 1, 2000.

  • tools: 2 tools scanned
  • metadata: scanned

No findings.

Tools (2)

  • safe4_price

    Price and accepted payment networks for one Safe4 decision. Free to call. Returns the same x402 terms the HTTP endpoint advertises, so an agent can see the cost before committing to a paid call.

  • safe4_authorize

    Decide whether a proposed agent payment should proceed. Settled per call in USDC over x402. Called without ``payment`` it returns the price list rather than a decision; call it again with the signed payload to receive one. The task and the two allow-lists are the principal's constraints, not the agent's: they are what the purchase is tested against, so an agent that writes its own ``task`` is grading its own homework. Safe4 records every field it was given in the audit entry and marks the task context as request-supplied, so a substituted constraint is visible afterwards. Args: task: The task the agent was given, as stated by its principal. purchase: What is being bought. purchase_purpose: Why this purchase serves the task. amount: Decimal amount as a string, for example "25.00". currency: Currency of the proposed payment, for example "USDC". counterparty: Who would receive the payment. service_category: Category of the thing being bought. allowed_ser