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ERC20 allowance

How much of a token a spender is still allowed to move on an owner's behalf, and whether that approval is unlimited. The check to run before an approve, and the one that finds forgotten infinite approvals. Via eth_call (allowance).

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Our latest check (2026-10-11)

Answering
Yes — valid x402 payment terms
Time to answer
56 ms
Price
$0.005 per call
Paying buyers, last 30 days
1 (directory's own records)
Paid calls, last 30 days
1
Category
Blockchain reads
Address
https://flat-rate-llm.kikoribera03.workers.dev/v1/evm/erc20-allowance

Accuracy

Accuracy scores are published once a seller has enough paid checks against an independent record (at least 7 scored answers over at least 7 days). Until then no score is shown, and a missing score is never a pass.

For agents

This page as JSON: /sellers/a0a4e148389a.json. Paid lookup by address: GET /api/seller?resource=… ($0.001, x402).

Sellers can see the evidence behind their checks and ask for a re-check at [email protected].