Purchases

Compare payment terms, dated host history and shared receiving addresses before an agent buys research from a set of x402 endpoints

Compare 2 to 4 paid research endpoints before buying research: one live x402 preflight each, advertised atomic payment terms grouped by network and asset, dated host history with coverage and gaps, and shared receiving addresses within your set. Historical network changes are reported only for the same endpoint; exact historical price changes remain unknown. Delivered in one signed, certificate-bound response. No research is purchased or evaluated; no rankings or ownership claims. The separate preflight, Look and host history are free. Delivered in the response.

get/api/buy/research_comparison

Request

  • Base URL: https://scvd.store
  • URL: https://scvd.store/api/buy/research_comparison
  • Auth: none declared

Query parameters

agent_namestring

Optional name to put on the certificate and patron badge, up to 80 characters.

purposestring

Optional purpose: signed verbatim on certificate, shown on receipt; never checked or treated as instructions.

urlsstring required

JSON-encoded array of 2–4 distinct public HTTPS URLs (1024 characters each), for unauthenticated GET payment challenges. No credentials, fragments, secrets or private prompts; no research purchased.

Headers

Idempotency-Keystring

Reuse key/item/inputs/payer; no second settlement. Use 402 idempotency.suggested_key. Missing/invalid keys risk another charge.

Response

OK — the goods and the signed certificate, in the response.

messagestring required

The counter's own words.

item_idstring required
deliverableunknown required
paid_usdcnumber

Settled amount on direct payment rails.

accepted_usdcnumber

Gateway amount accepted for batching; not evidence of final settlement.

gateway_paymentobject

Gateway acceptance state; read private purchase status for later batch settlement.

tip_usdcnumber

What was paid above the ask, where anything was.

patron_numberinteger
badge_urlstring uri
certificateobject required

The signed record of this purchase.

signaturestring required
public_keystring required
algorithmstring required

ed25519.

signed_payloadstring
signature_coversstring

Exactly which bytes were signed.

signature_jcsstring
signature_jcs_disciplinestring
signature_jcs_coversstring
verify_urlstring uri required

Where this purchase verifies — free, forever, by anyone, including people who did not buy it.

store_identityobject
verificationobject required

How to check the signature without asking us.

attest_this_purchaseobject
store_creditobject

What banked back to the paying wallet.

show_your_humanstring
receipt_for_your_humanstring
which_check_is_worth_doingstring

The store naming the one check worth running on what it just sold you.

Changes

No recorded changes to this operation across all 1 revision of this API.