Base Transfer Risk
base-token-check.fly.dev · 3 paid endpoints · listed 2026-10-27
Check a Base address before an agent pays or approves it. Input: one address. Output: allow or warn. Reports wallet or contract, whether the wallet has sent a transaction, whether a contract already had code 7 days ago, and whether it is a proxy (EIP-1967, EIP-1167, or implementation()). Warns on contract_is_new, proxy, or no_outgoing_transactions. Wallet age is unknown. A deleted contract looks like a wallet. Not proof of theft.
Paid endpoints
| Method | Endpoint | Price | Networks |
|---|---|---|---|
| GET | base-token-check.fly.dev/v1/counterparty-check Check a Base address before an agent pays or approves it. Input: one address. Output: allow or warn. Reports wallet or contract, whether the wallet has sent a t | $0.01 | Base |
| GET | base-token-check.fly.dev/v1/token-check Base ERC-20 check before an agent buys or holds a token. Input: one contract address. Output: allow, warn, or block. Block: not a contract, not an ERC-20, zero | $0.01 | Base |
| GET | base-token-check.fly.dev/v1/transfer-check Check a Base ERC-20 for a honeypot-style transfer cost before a swap or send. Input: one token address. Output: allow, warn, or block. Block: not a contract or | $0.01 | Base |
Latest checks
| When | Endpoint | HTTP | ms | Result |
|---|---|---|---|---|
| 5 days ago | base-token-check.fly.dev/v1/counterparty-check | 402 | 360 | valid x402 v2 terms |
Income on Base (7 days)
| Day | Transfers | USDC | |
|---|---|---|---|
| 2026-11-01 | 1 | $0.01 | |
| 2026-10-31 | 1 | $0.01 | |
| 2026-10-27 | 2 | $0.02 |
Is this your API?
<a href="https://logicnodes.io/observatory/p/base-token-check.fly.dev"><img src="https://logicnodes.io/observatory/badge/base-token-check.fly.dev.svg" alt="x402 status"></a>
Claim it for free with
x402_provider_claim (sign with your payout address), and get an alert within minutes when it stops answering with x402_monitor_create ($5 for 30 days). Both work over MCP (https://logicnodes.io/mcp/v2) or POST https://logicnodes.io/v1/tools/<tool>.Income is all USDC received by the provider's payout address on Base, whatever the source. Score: 0-100: 50 x share of checks in the last 72 h that returned valid x402 payment terms + 30 x min(1, log10(1 + USDC received in 7 days) / 4) + 20 x min(1, log10(1 + distinct payers in 7 days) / 3). A provider never checked scores on income only; income is all USDC received by its payout address on Base, whatever the source. JSON: /v1/observatory/providers/base-token-check.fly.dev