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USDC Receipt Verifier (Base Mainnet)
x402
USDC Receipt Verifier (Base Mainnet) is a paid API for AI agents from usdc-receipt-verifier.soloearn.workers.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-19).
Verifies that a specific Base mainnet transaction transferred at least a minimum amount of USDC to a given address, optionally checking sender and confirmation count.
Price / call$0.005
Success—
StatusUnknown
How this service works
Verify that a Base mainnet transaction paid at least N USDC to an address (optionally from a given sender, with K confirmations). Returns matched transfer, block time and confirmations. Read-only.
Output
Returns a JSON object with a 'verified' boolean indicating whether the transaction meets the criteria, along with a status code, the matched USDC transfer details, block timestamp, and number of confirmations at the time of the query.
Example use cases
Gating digital product delivery
“Before I send the download link, can you check that transaction 0xd4f7...9a2c paid at least 25 USDC to my wallet 0x1234...5678 on Base mainnet with at least 2 confirmations?”
Confirming freelance payment receipt
“I'm expecting payment from 0xClient...Addr — can you verify that tx 0xabc9...1234 transferred at least 50 USDC to 0xMyWallet...5678 and tell me the block time?”
Automated subscription activation
“Check whether transaction 0x9f3e...b7c1 sent at least 5 USDC to 0xService...Addr on Base mainnet, so I can activate this user's subscription.”
Technical details
Endpoint
GEThttps://usdc-receipt-verifier.soloearn.workers.dev/v1/verify?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a lightweight, read-only way to programmatically confirm that a specific Base mainnet transaction paid a sufficient USDC amount to a recipient — especially in payment-gated workflows (x402 or custom), digital goods delivery, or subscription activation where you need cryptographic receipt proof without running your own blockchain node.
Side effects
- Transaction hash not found on Base mainnet — returns verified: false
- Transfer amount below specified minimum — returns verified: false
- Recipient address mismatch — returns verified: false
- Sender address mismatch when 'from' is specified — returns verified: false
- Insufficient confirmations — returns verified: false
- Invalid address or transaction hash format — likely 4xx error
- RPC or network connectivity issues may cause transient failures
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| input | object | |
| output | object |
Tags
x402
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