Tools / x402 tools

x402 Test Vector free

Example x402 payment requirements, explained.

GET /v1/x402/test-vector

Returns a fully-formed example x402 v2 payment-requirements object with each field explained. A free onboarding aid for developers building their first paid endpoint.

Parameters

None.

Example

macOS / Linux

curl -s "https://quartermaster.surewhynot.app/v1/x402/test-vector"

Windows (cmd or PowerShell)

curl.exe -s "https://quartermaster.surewhynot.app/v1/x402/test-vector"

This endpoint is free — no payment required.

FAQ

Who is this for?

Anyone standing up their own x402 endpoint who wants a correct reference payload to model theirs on.

Is this really free?

Yes — this endpoint takes no payment. It exists so you can try Quartermaster instantly and so agents can discover the service before paying for the heavier tools.

What are the paid tools?

Web extraction, AI summaries and embeddings, DNS, transaction status, settlement receipts, x402 inspection, and more — each a fraction of a cent per call. See the full catalog on the home page.

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