# Oblique Markets X402 Receipt Lookup

> Oblique Markets X402 Receipt Lookup is a paid API for AI agents from api.oblique.markets, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-15).

Retrieves a previously issued settlement-verify receipt by verification_id, returning the stored on-chain verification result including payer, payee, amount, status, and confirmation count at verification time.

## Facts

- Endpoint: GET https://api.oblique.markets/api/v1/paid/x402-receipt-lookup
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/oblique-markets-x402-receipt-lookup-bbe1f8ab
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_drHhtZy-mLmEsNlYWpWwn

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 oblique-markets-x402-receipt-lookup-bbe1f8ab
```

Example prompt: Can you pull up the settlement receipt for verification ID 'a3f7c821-09b2-4e6a-b13d-2c8d5f1e0044' — I need to see the payer, payee, amount, and how many confirmations there were at the time it was verified?

## When to prefer this

Use this endpoint when you have already called a settlement-verify operation and received a verification_id, and need to retrieve the stored result at a later time — for auditing, dispute resolution, or downstream confirmation workflows. This is a pure read/lookup endpoint and does not trigger new verification; use it after the fact to retrieve cached on-chain results.

## Known failure modes

- Unknown or invalid verification_id returns a 404 not found error
- Malformed UUID format causes a 400 bad request error
- Receipt not yet persisted if verification is still in-flight — may return empty or pending state
- Service downtime or upstream issues may return 5xx errors
- Expired or purged receipts may no longer be retrievable

## How this service works

Use when an agent needs x402 receipt lookup. Returns Fetch a previously issued settlement-verify receipt by verification_id: returns the stored on-chain verification result (payer, payee, amount, status, confirmations at verification time) with its creation timestamp. $0.002.

## Output

Returns a JSON object containing the stored on-chain verification result: payer wallet address, payee wallet address, payment amount, settlement status, number of confirmations recorded at verification time, and the receipt creation timestamp.

## 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",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "verification_id"
     ],
     "properties": {
      "verification_id": {
       "type": "string",
       "description": "UUID returned by settlement_verify"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "properties": {
    "found": {
     "type": "boolean"
    },
    "result": {
     "type": "object",
     "properties": {
      "found": {
       "type": "boolean"
      },
      "payee": {
       "type": "string"
      },
      "payer": {
       "type": "string"
      },
      "status": {
       "type": "string"
      },
      "settled": {
       "type": "boolean"
      },
      "tx_hash": {
       "type": "string"
      },
      "amount_usdc": {
       "type": "number"
      },
      "verified_at": {
       "type": "string"
      },
      "block_number": {
       "type": "integer"
      },
      "confirmations": {
       "type": "integer"
      },
      "verification_id": {
       "type": "string"
      }
     }
    },
    "tx_hash": {
     "type": "string"
    },
    "chain_id": {
     "type": "integer"
    },
    "created_at": {
     "type": "string"
    },
    "verification_id": {
     "type": "string"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "found": true,
  "result": {
   "found": true,
   "payee": "0x209693bc6afc0c5328ba36faf03c514ef312287c",
   "payer": "0x1c7d4b196cb0c7b01d743fbc6116a902379c7238",
   "status": "success",
   "settled": true,
   "tx_hash": "0x9a1de1a4c3f2b06a7c55e01d9f4b2b6f0e8a33c15d7f90ab12cd34ef56ab78cd",
   "amount_usdc": 0.01,
   "verified_at": "2026-08-10T12:00:00.000Z",
   "block_number": 33421187,
   "confirmations": 512,
   "verification_id": "7f3c1a90-2b44-4e0b-9a71-8d2f5c6e1b23"
  },
  "tx_hash": "0x9a1de1a4c3f2b06a7c55e01d9f4b2b6f0e8a33c15d7f90ab12cd34ef56ab78cd",
  "chain_id": 8453,
  "created_at": "2026-08-10T12:00:00.000Z",
  "verification_id": "7f3c1a90-2b44-4e0b-9a71-8d2f5c6e1b23"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/oblique-markets-x402-receipt-lookup-bbe1f8ab/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.oblique.markets](https://www.zero.xyz/host/api.oblique.markets/llms.txt)