Sentinel Payment Boundary Tools

Submit an opaque, non-identifying request reference, one public Node.js or TypeScript repository URL, one public failing CI log URL, a reply email, and an optional failure summary. No sign-in or meeting is required. The request moves no funds, authorizes no payment, and starts no work; a separately human-approved written SOW is required before payment or work. Google Forms processes the submitted reference, public URLs, and reply email privately for the form owner.

The source checkout is version0.4.1and exposes three deterministic read-only tools:

- preflight_agent_payment_boundary— checks one or two inline public documents against 11 fixed payment-authority boundaries, without fetching requester URLs, executing supplied text, submitting a request, or moving funds
- preflight_x402_v2_payment_required— checks one decoded inline x402 v2PaymentRequiredJSON document under a pinned, closed-world exact-EVM EIP-3009 Sentinel safety profile, without decoding headers, evaluating payer policy, verifying signatures or receipts, settling, connecting a wallet, or moving funds
- prepare_agent_payment_boundary_quote_request— prepares a complete, unsubmitted public GitHub issue draft for the fixed-scope Agent Payment Boundary Review from one or two caller-supplied public HTTPS document URLs without credentials, query strings, fragments, or non-public hosts; it does not fetch or verify those URLs, make a network request, use credentials, submit the issue, authorize payment, or create service entitlement

It also exposes exactly two read-only resources:

- sentinel://services/catalog
- sentinel://services/quote-request-contract

Only resource reads fetch the two hard-coded canonical live JSON contracts. Both preflights run locally on inline content, and the request-draft preparer formats its inputs locally without fetching supplied URLs. All three tools make no network request and cannot submit a request, move funds, authorize payment, request credentials, connect a wallet, or create service entitlement. The requester decides whether to submit the public draft within its own communication authority; a Sentinel human controls issuance of the complete written quote, and any later payment remains controlled by the payer's own policy.

Install and verify it from the repository root:

npm ci --prefix mcp --ignore-scripts npm test --prefix mcp npm audit --prefix mcp --audit-level=high npm run pack:check --prefix mcp

Configure an MCP client to launch the source checkout over stdio, replacing the path with the absolute path on that machine:

To inspect the exact GitHub Pages artifact at its production base path:

npm test npm run lint npm audit --audit-level=high npm run export:pages

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