# SameDayDesk Transaction Receipt Lookup

> SameDayDesk Transaction Receipt Lookup is a paid API for AI agents from agents.samedaydesk.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-15).

Fetches and decodes a Base mainnet transaction receipt, identifying canonical USDC transfers and payment settlement evidence for a given transaction hash.

## Facts

- Endpoint: GET https://agents.samedaydesk.com/chain/transaction-receipt
- 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/samedaydesk-transaction-receipt-lookup-6bfa0934
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_oh0iMDLoD_ywP6KLP3Spl

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 samedaydesk-transaction-receipt-lookup-6bfa0934
```

Example prompt: Can you pull the transaction receipt for 0xcfcbb3...a8987 on Base mainnet and tell me whether the USDC payment went through, how much was sent, and to which address?

## When to prefer this

Use this endpoint when you need deterministic, decoded settlement proof for a specific Base mainnet transaction — especially to confirm canonical USDC payments by amount and recipient. Prefer it over generic blockchain explorers when you need structured, machine-readable transfer data with explicit canonical USDC flagging, boundary attestations (no wallet access, no signing), and agent-friendly JSON output. Ideal for payment verification workflows where a human or agent needs to prove funds arrived before releasing work or access.

## Known failure modes

- Transaction hash not found on Base mainnet — receipt returns found:false
- Invalid or malformed transaction hash format causes a bad request error
- Network congestion or RPC unavailability may cause timeouts
- Transaction exists but has no USDC transfer logs — decodedTransferCount is 0
- Transaction is still pending and receipt is not yet available

## How this service works

Deterministic agent APIs for web and company intelligence, repository security, agent-work economics, machine-service discoverability, payment preflight and settlement proof, wallet context, and Morpho decision evidence. Pay per call through Base x402 or native MPP, with a Circle Gateway Nanopayments path for gasless batched USDC.

## Output

Returns a structured JSON object with the transaction's success status, block number and timestamp, gas used and fee, decoded event log count, a list of all decoded token transfers, a filtered list of canonical USDC transfers (including from/to addresses, token contract, and amount in both USDC and atomic units), and boundary metadata confirming no private data or signing occurred. Includes a decision field ('found' or otherwise) and a checkedAt timestamp.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "transactionHash"
     ],
     "properties": {
      "network": {
       "enum": [
        "base",
        "ethereum"
       ],
       "type": "string",
       "default": "base",
       "description": "Receipt network. Defaults to Base mainnet."
      },
      "transactionHash": {
       "type": "string",
       "pattern": "^0x[0-9a-fA-F]{64}$",
       "description": "Mined Base or Ethereum transaction hash."
      }
     },
     "additionalProperties": false
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "required": [
      "ok",
      "product",
      "version",
      "checkedAt",
      "decision",
      "request",
      "chain",
      "transaction",
      "receipt",
      "transfers",
      "canonicalUsdcTransfers",
      "findings",
      "boundary"
     ],
     "properties": {
      "ok": {
       "type": "boolean"
      },
      "chain": {
       "type": "object"
      },
      "product": {
       "type": "string",
       "const": "samedaydesk-transaction-receipt"
      },
      "receipt": {
       "type": "object"
      },
      "request": {
       "type": "object"
      },
      "version": {
       "type": "string"
      },
      "boundary": {
       "type": "object"
      },
      "decision": {
       "enum": [
        "found",
        "not_found",
        "rpc_unavailable"
       ],
       "type": "string"
      },
      "findings": {
       "type": "array"
      },
      "checkedAt": {
       "type": "string"
      },
      "transfers": {
       "type": "array"
      },
      "transaction": {
       "type": "object"
      },
      "canonicalUsdcTransfers": {
       "type": "array"
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "chain": {
   "id": 8453,
   "name": "Base mainnet",
   "network": "eip155:8453"
  },
  "product": "samedaydesk-transaction-receipt",
  "receipt": {
   "found": true,
   "logCount": 2,
   "transfersTruncated": false,
   "decodedTransferCount": 1,
   "canonicalUsdcTransferCount": 1
  },
  "request": {
   "network": "base",
   "transactionHash": "0xcfcbb3...a8987"
  },
  "version": "1.0.0",
  "boundary": {
   "source": "bounded public Base mainnet receipt and block RPC",
   "walletAccessed": false,
   "rawLogsReturned": false,
   "privateLedgerRead": false,
   "transactionSigned": false,
   "transactionModified": false,
   "transactionBroadcast": false
  },
  "decision": "found",
  "findings": [],
  "checkedAt": "2026-08-11T13:50:00.000Z",
  "transfers": [
   {
    "to": "0x8904dF3DE6DFEe6a7C8cc38619d2f17806213Cee",
    "from": "0x990C...7f17",
    "token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "logIndex": "1",
    "amountUsdc": "0.005",
    "amountAtomic": "5000",
    "canonicalUsdc": true
   }
  ],
  "transaction": {
   "hash": "0xcfcbb3...a8987",
   "status": "success",
   "blockNumber": "49823378",
   "gasUsedAtomic": "128761",
   "blockTimestamp": "2026-08-11T08:15:03.000Z",
   "transactionFeeWei": "1287610000000",
   "effectiveGasPriceWei": "10000000"
  },
  "canonicalUsdcTransfers": [
   {
    "to": "0x8904dF3DE6DFEe6a7C8cc38619d2f17806213Cee",
    "from": "0x990C...7f17",
    "token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "logIndex": "1",
    "amountUsdc": "0.005",
    "amountAtomic": "5000",
    "canonicalUsdc": true
   }
  ]
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/samedaydesk-transaction-receipt-lookup-6bfa0934/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agents.samedaydesk.com](https://www.zero.xyz/host/agents.samedaydesk.com/llms.txt)