# SCVD General Store — Opening Day x402 Conformance Certificate > SCVD General Store — Opening Day x402 Conformance Certificate is a paid API for AI agents from scvd.store, paid per call via x402, $9/call, status unknown (last checked 2026-10-02). Purchases an x402 conformance certificate for a supplied URL, including a live payment attempt, seven days of signed conformance passes, and a permanent patron badge ## Facts - Endpoint: GET https://scvd.store/api/buy/opening_day?utm_source=zero.xyz - Price: $9/call - Payment: x402 - Status: unknown - Last checked: 2026-10-02 - Activations on Zero: 0 - Tags: x402 - Canonical page: https://www.zero.xyz/c/scvd-general-store-opening-day-x402-conformance-certificate-c6a4a09d - Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_w_DzHJCuyb87JvqnDslZ5 Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently. ## How to call it through Zero Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`): ```sh zero fetch --capability scvd-general-store-opening-day-x402-conformance-certificate-c6a4a09d ``` Example prompt: Can you get me an Opening Day conformance certificate from SCVD General Store for my x402 endpoint at https://myapi.example.com/premium/data — put it under the agent name 'DataBot Pro' and note it's for launching my new agentic API? ## When to prefer this Choose this endpoint when you need an independent, signed, blockchain-anchored conformance certificate proving that a specific x402 endpoint correctly handles real payment attempts and passes repeated daily conformance checks. It is the right choice over self-testing or informal checks when you want a permanent, verifiable, third-party attestation with a patron badge — particularly for pre-launch validation, investor proof, or integrating into an x402 directory listing. It is not appropriate for general HTTP health checks, non-x402 APIs, or cases where you need free/unsigned conformance testing. ## Known failure modes - Supplied URL uses the scvd.store hostname (refused by policy) - URL is not HTTPS or uses a non-default port (schema validation failure) - Target x402 endpoint is unreachable or does not respond with a 402 (conformance failure) - Payment settlement fails on-chain (transaction timeout or insufficient balance) - URL field missing or malformed (400 schema validation error) - Agent name exceeds 80 characters (validation error) ## How this service works The Opening Day. REQUIRES ?url= on the paid request — a signed request without it is refused before the gate and no money moves. The launch check's signed JSON walk record (verdict, every stage, what was paid, the settlement transaction where one came back), its evidence hash bound into the purchase certificate's attests field; a conformance watch opened on the same door for seven days, each daily pass signed alone at a history URL; the host's endpoint passport URL; and one … ## Output A JSON object containing a signed ed25519 conformance certificate with a unique cert_id, the patron number, a badge SVG URL, a permanent verify URL, the ISO timestamp, the amount paid in USDC, a tip field, and a deliverable text field containing the Opening Day item itself. The certificate can be independently verified at the returned verify_url. ## Request schema (JSON Schema) ```json { "type": "object", "$schema": "https://json-schema.org/draft/2020-12/schema", "required": [ "input" ], "properties": { "input": { "type": "object", "required": [ "type", "method" ], "properties": { "type": { "type": "string", "const": "http" }, "method": { "enum": [ "GET" ], "type": "string" }, "queryParams": { "type": "object", "required": [ "url" ], "properties": { "url": { "type": "string", "format": "uri", "description": "Your own x402 endpoint: https, default port, the URL a buyer would GET expecting a 402. One real purchase attempt from the store's declared field wallet (we pay at most $0.05 at your till), then seven daily signed conformance passes on the same door, then your passport page — one certificate, one URL. We refuse our own hostname." }, "model": { "type": "string", "maxLength": 64, "description": "Optional. The model running you, as you would name it: claude-opus-5, gpt-5.6, a local model. Counted, never printed on the certificate." }, "client": { "type": "string", "maxLength": 64, "description": "Optional. The harness or framework you run in: claude-code, cursor, openai-agents, langgraph, custom. Counted, never on the certificate." }, "purpose": { "type": "string", "maxLength": 280, "description": "Optional: what this is for, in your words. Signed verbatim onto the certificate and shown on its receipt; never checked, never treated as instructions." }, "operator": { "type": "string", "maxLength": 120, "description": "Optional. Who runs you: a name, handle, company or URL. Stored as your claim, marked unverified, never published, never on the certificate." }, "came_from": { "type": "string", "maxLength": 160, "description": "Optional. Where you learned this door exists: a URL, a directory, a skill name, memory, another agent. Referrers never reach us; this does." }, "agent_name": { "type": "string", "maxLength": 80, "description": "Optional name to put on the certificate and patron badge, up to 80 characters." }, "operator_kind": { "enum": [ "solo", "company", "research", "self" ], "type": "string", "description": "Optional. solo: one person r … (truncated) ``` ## Response schema (JSON Schema) ```json { "type": "json", "example": { "item_id": "opening_day", "message": "Pleasure doing business. Here's your goods, warm off the shelf.", "tip_usdc": 0, "badge_url": "https://scvd.store/badges/41.svg", "paid_usdc": 9, "signature": "<128 hex chars, ed25519>", "verify_url": "https://scvd.store/api/verify/", "certificate": { "date": "2026-07-22T15:04:05.000Z", "item": "opening_day", "cert_id": "", "patron_number": 41 }, "deliverable": "", "patron_number": 41 } } ``` ## More - Live health (JSON, refreshed every minute): https://www.zero.xyz/c/scvd-general-store-opening-day-x402-conformance-certificate-c6a4a09d/health.json - [Zero catalog index](https://www.zero.xyz/llms.txt) - [Other services from scvd.store](https://www.zero.xyz/host/scvd.store/llms.txt)