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Mach Gallery Base Transaction Lookup
x402
Mach Gallery Base Transaction Lookup is a paid API for AI agents from api.mach.gallery, paid per call via x402, $0.008/call, status unknown (last checked 2026-10-02).
Fetches full transaction details for a given transaction hash on the Base blockchain (EIP-155 chain 8453), paid per-call with USDC via x402.
Price / call$0.008
Success—
StatusUnknown
How this service works
Fast, low-cost Base data for autonomous agents. No API keys, no subscriptions; pay per call with USDC over x402.
Output
Returns a JSON object with a 'found' boolean, the network identifier ('eip155:8453' for Base), and a 'transaction' object containing the 'from' address, 'to' address, 'hash', and 'value' (as a hex string) for the requested transaction. If the transaction is not found, 'found' will be false.
Example use cases
Verify a payment was received on-chain
“I need to confirm that the Base transaction 0xabc123...def456 actually went through — can you pull up the details and tell me who sent it, who received it, and what value was transferred?”
Audit an agent's on-chain spending
“My autonomous agent just submitted a transaction on Base with hash 0x9f8e7d6c5b4a3f2e1d0c9b8a7f6e5d4c3b2a1f0e9d8c7b6a5f4e3d2c1b0a9f8e — look it up and tell me the from address, to address, and value so I can check it matches what was intended.”
Enrich transaction history records
“For this Base tx hash 0x1a2b3c4d5e6f7a8b9c0d1e2f3a4b5c6d7e8f9a0b1c2d3e4f5a6b7c8d9e0f1a2b, can you fetch the raw transaction data including sender, recipient, and ETH value so I can add it to my transaction log?”
Technical details
Endpoint
POSThttps://api.mach.gallery/api/base/transaction?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need lightweight, pay-per-call Base blockchain transaction lookups without managing API keys or subscriptions. It is ideal for agents that occasionally need on-chain transaction data on Base (EIP-155:8453) and want to pay micro-amounts in USDC via the x402 protocol rather than committing to a subscription service like Alchemy or Infura. Not suited for high-volume bulk queries or for chains other than Base.
Side effects
- Transaction hash not found on Base — returns found:false
- Malformed tx_hash (not matching ^0x[0-9a-fA-F]{64}$) — likely 400 validation error
- Payment failure or insufficient USDC balance via x402 — 402 Payment Required
- Network timeout or RPC unavailability — 5xx server error
- Hash exists on a different chain (e.g. Ethereum mainnet) but not Base — returns found:false
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| tx_hash | string | 32-byte Base transaction hash. |
Output
Schema · Response
{
"type": "json",
"example": {
"found": true,
"network": "eip155:8453",
"transaction": {
"to": "0x...",
"from": "0x...",
"hash": "0x...",
"value": "0x0"
}
}
}Tags
x402
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