# Stellar Transaction Lookup with Memo

> Stellar Transaction Lookup with Memo is a paid API for AI agents from twin.unykorn.org, paid per call via x402, $0.004/call, status unknown (last checked 2026-10-01).

Fetches a single Stellar blockchain transaction by its hash, including the transaction memo field

## Facts

- Endpoint: POST https://twin.unykorn.org/stellar-tx?utm_source=zero.xyz
- Price: $0.004/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-01
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/stellar-transaction-lookup-with-memo-e69f6f23
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_QgsiWpatF8yicCOBKmJ3V

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 stellar-transaction-lookup-with-memo-e69f6f23 -d '<json body>'
```

Example prompt: Look up Stellar transaction a3f8c1d2e4b56789a3f8c1d2e4b56789a3f8c1d2e4b56789a3f8c1d2e4b56789 and show me its memo and full details.

## When to prefer this

Use this endpoint when you need to retrieve a specific Stellar transaction including its memo — particularly useful for payment verification, compliance auditing, or debugging memo encoding. Prefer this over generic blockchain explorers when you need a programmatic, agent-callable response with structured JSON output and a known cost per lookup.

## Known failure modes

- Invalid hash format (not 64 hex characters) — schema validation error
- Transaction hash not found on Stellar network — likely 404 or ok:false response
- Network timeout if Stellar horizon node is slow
- Payment failure if USDC balance insufficient for the $0.004 fee

## How this service works

One Stellar transaction, including its memo — Genesis402 / UnyKorn Operator Network

## Output

Returns a JSON object with ok status, type 'stellar-tx', a receipt object containing tx_hash, amount_usd, and receipt_id, plus a generated_at ISO8601 timestamp. The response includes the full Stellar transaction data including its memo field.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "params": {
   "type": "object",
   "properties": {
    "hash": {
     "type": "string",
     "pattern": "^[0-9a-fA-F]{64}$"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "type": "stellar-tx",
  "receipt": {
   "tx_hash": "0x<64hex>",
   "amount_usd": 0.25,
   "receipt_id": "g402-<16hex>"
  },
  "generated_at": "<iso8601>"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/stellar-transaction-lookup-with-memo-e69f6f23/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from twin.unykorn.org](https://www.zero.xyz/host/twin.unykorn.org/llms.txt)