# Delx Base Transaction Receipt

> Delx Base Transaction Receipt is a paid API for AI agents from api.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-16).

Fetches a Base blockchain transaction receipt by hash using eth_getTransactionReceipt, returning full on-chain receipt data for $0.001 USDC per call.

## Facts

- Endpoint: POST https://api.delx.ai/api/v1/x402/base-receipt
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/delx-base-transaction-receipt-b17b4c98
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Hj-BrjomjgmwsgqBVgvRl

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 delx-base-transaction-receipt-b17b4c98 -d '<json body>'
```

Example prompt: Can you pull the transaction receipt for Base tx hash 0x4f3a...b9c2 and tell me whether it succeeded, how much gas was used, and what block it landed in?

## When to prefer this

Use this endpoint when you need a quick, pay-per-call lookup of a Base L2 transaction receipt without managing your own RPC node or API keys. Ideal for agents that need occasional on-chain verification at low cost ($0.001 USDC). Prefer this over raw RPC calls when operating in an x402-enabled agent environment that already handles micropayments. Not suited for high-volume batch receipt lookups where per-call pricing would accumulate significantly.

## Known failure modes

- Transaction hash not found or not yet indexed — returns null receipt
- Invalid or malformed transaction hash format — likely 4xx error
- Transaction is pending and not yet mined — receipt not available yet
- Network or RPC node timeout — service unavailable error
- Incorrect chain (e.g. Ethereum mainnet hash submitted instead of Base) — returns null

## How this service works

Base transaction receipt by hash for $0.001 USDC via eth_getTransactionReceipt. Call when you need this bounded result without an API key or subscription. Returns machine-readable JSON via x402 on Base or Solana. Limitation: results cover only the supplied input or one bounded public endpoint at request time; callers must verify before acting.

## Output

Returns the full eth_getTransactionReceipt response for the given Base transaction hash, including transaction status (success/fail), block number, block hash, gas used, cumulative gas used, contract address (if deployment), from/to addresses, and an array of event logs with topics and data.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "tx_hash": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "result": {},
  "tool_name": "get_base_receipt"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/delx-base-transaction-receipt-b17b4c98/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.delx.ai](https://www.zero.xyz/host/api.delx.ai/llms.txt)