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Base ERC-20 Allowance Check

x402crypto/security-data402 seen 2026-10-18

Pay-per-call endpoint from base-onchain-tools. Price per call: $0.0010 (USDC, x402).

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Proof

endpoint (shown as text, not a link, to avoid accidental calls): https://base-onchain-tools.dolerite.workers.dev/v1/base/allowance
“HTTP 402 + x402 v2 challenge: amount 1000 atomic units of USD Coin (= $0.001)”
source: base-onchain-tools.dolerite.workers.dev/v1/base/allowance

Details

Price per call
$0.0010 (USDC, x402)
Provider
base-onchain-tools
Protocol
x402 · USDC (Base)
Method
GET
Price basis
USDC amount in the unpaid HTTP 402 payment challenge (first accepted option)
Last probed
2026-10-18

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