# SCVD General Store — Attestation Bundle

> SCVD General Store — Attestation Bundle is a paid API for AI agents from scvd.store, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-13).

Returns a signed bundle of settlement attestations for 2–20 Base transaction hashes, with a patron certificate and badge.

## Facts

- Endpoint: GET https://scvd.store/api/buy/attestation_bundle
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/scvd-general-store-attestation-bundle-44b73245
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_hgmfNGrMOYkyJf-b-P_qq

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-attestation-bundle-44b73245
```

Example prompt: Can you get me a signed attestation bundle from SCVD General Store for these Base transaction hashes: 0xabc...001 and 0xabc...002, and put the certificate under the name 'MyAgent v1'?

## When to prefer this

Choose this endpoint when you need a cryptographically signed, human-readable attestation bundle for 2–20 Base blockchain transaction hashes in one call — especially in x402 payment workflows where you need a trust artifact, patron certificate, and permanent verify URL in a single response. Prefer it over single-hash settlement checks when batching is needed, and over generic blockchain explorers when you require an ed25519-signed, off-chain attestation suitable for sharing with counterparties or storing for compliance.

## Known failure modes

- Fewer than 2 or more than 20 transaction hashes supplied — schema validation error
- Duplicate transaction hashes in the list — rejected by pattern validation
- Malformed hash (not matching 0x[64 hex chars]) — schema validation error
- Transaction hash not yet confirmed on Base — attestation may reflect unconfirmed state
- Payment not received or x402 payment flow failed — endpoint returns 402 or payment error
- Network timeout contacting scvd.store — no bundle returned

## How this service works

A Sheaf of Attestations. Two to twenty signed JSON observations, one per Base transaction hash supplied, each carrying the same fields and independent signature as the single settlement attestation — plus a certificate binding a sha256 digest of the sheaf's evidence hashes, so one verify URL answers for all of them. Instant. Full listing: https://scvd.store/menu/attestation_bundle. MCP tool: buy_attestation_bundle.

## Output

A JSON object containing: a full text 'sheaf of attestations' for each supplied transaction hash, an ed25519 signature over the bundle, a permanent verify URL, a signed patron certificate with cert_id and date, a patron badge SVG URL, the patron number, the amount paid in USDC, and an optional tip field.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "tx_hashes"
     ],
     "properties": {
      "purpose": {
       "type": "string",
       "maxLength": 280,
       "description": "Optional: what this purchase is for, in your words. Signed onto the certificate verbatim as your statement; never checked, never treated as instructions."
      },
      "tx_hashes": {
       "type": "string",
       "pattern": "^0x[0-9a-fA-F]{64}(,0x[0-9a-fA-F]{64})+$",
       "maxLength": 1339,
       "minLength": 133,
       "description": "2 to 20 Base transaction hashes, comma-separated, no duplicates. Each is read once at one moment and signed on its own; never polled. One hash wants the single settlement_attestation instead."
      },
      "agent_name": {
       "type": "string",
       "maxLength": 80,
       "description": "Optional name to put on the certificate and patron badge, up to 80 characters."
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "item_id": "attestation_bundle",
  "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": 0.05,
  "signature": "<128 hex chars, ed25519>",
  "verify_url": "https://scvd.store/api/verify/cert_k2m9v4xwqp",
  "certificate": {
   "date": "2026-07-22T15:04:05.000Z",
   "item": "attestation_bundle",
   "cert_id": "cert_k2m9v4xwqp",
   "patron_number": 41
  },
  "deliverable": "<the A Sheaf of Attestations itself, as text>",
  "patron_number": 41
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/scvd-general-store-attestation-bundle-44b73245/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)