sendcheck

api.pennyforge.org · 2 paid endpoints · listed 2026-10-27

SendCheck: pre-send verification of any EVM address on one chain (EIP-55 checksum, wallet-vs-contract, outgoing activity, balances, verdict). POST {address, chain}

livelast check 28 h ago

100%valid x402 answers, 72 h

$0.01USDC received on Base, 7 days

1distinct payers, 7 days

52.0score (0-100)

Paid endpoints

Method	Endpoint	Price	Networks
POST	api.pennyforge.org/check SendCheck: pre-send verification of any EVM address on one chain (EIP-55 checksum, wallet-vs-contract, outgoing activity, balances, verdict). POST {address, cha	$0.01	Base
POST	api.pennyforge.org/deep SendCheck deep scan: the same verification across all 5 chains (Base, Ethereum, Arbitrum, Optimism, Polygon) incl. wrong-network detection. POST {address, chain	$0.05	Base

Latest checks

When	Endpoint	HTTP	ms	Result
28 h ago	api.pennyforge.org/deep	402	195	valid x402 v2 terms
7 days ago	api.pennyforge.org/check	402	134	valid x402 v2 terms

Income on Base (7 days)

Day		Transfers	USDC
2026-10-29		1	$0.01

Is this your API?

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<a href="https://logicnodes.io/observatory/p/api.pennyforge.org"><img src="https://logicnodes.io/observatory/badge/api.pennyforge.org.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/api.pennyforge.org