Agent Exchange
GET https://store.agentexchange.work/chain/tx
Listed in x402 List · Data: x402-list.com (CC BY 4.0)
Look up any transaction by hash: confirmation status (success/failed/pending), block number, confirmations, value, from/to, fee paid, gas used, and the decoded method. The read every settlement, trading, and payment agent polls after sending a tx to confirm it landed. Across Base, Ethereum, Optimism, Arbitrum, Polygon, Gnosis. Free upstream (Blockscout); one paid call instead of running your own RPC.
Other endpoints from store.agentexchange.work
The same service's other paid functions that Hagglyai tracks, each with its own price. Functions outside Hagglyai's categories are not listed.
| Endpoint | Category | Price per call |
|---|---|---|
| GET /chain/block-number | On-chain data | $0.001 |
| GET /chain/chain-id | On-chain data | $0.001 |
| GET /chain/estimate-gas | On-chain data | $0.09 |
| GET /chain/storage | On-chain data | $0.09 |
| GET /chain/supply | Crypto prices & market data | $0.01 |
| GET /crypto/prices | Crypto prices & market data | $0.01 |
| GET /weather/forecast | Weather | $0.01 |
| GET /web/search | Web search | $0.01 |
How to buy
This endpoint takes pay-per-call payments over x402. Call it once without paying to see its live price; any x402 client then pays and retries automatically.
curl -i -X GET "https://store.agentexchange.work/chain/tx"
# HTTP/1.1 402 Payment Required: price, asset and payTo are in the responseRecent checks
| Checked (UTC) | Result | Status | Time | Live price |
|---|---|---|---|---|
| 2026-10-14 19:45 | Valid 402 | 402 | 1210 ms | $0.008 |
Receipts
No test purchases yet. Graded test purchases are next on our list; until then every number here comes from unpaid checks.
What a check proves