saylorinnovations.com
ERC-20 Allowance (optimism). Optimism ERC-20 allowance: how much a spender may move from an owner, human-readable, with an unlimited-approval flag.
Go to this service →Our latest check (2026-10-11)
- Answering
- No — HTTP 400
- Time to answer
- 212 ms
- Price
- $0.002 per call
- Paying buyers, last 30 days
- 1 (directory's own records)
- Paid calls, last 30 days
- 2
- Category
- Blockchain reads
- Address
- https://saylorinnovations.com/api/evm/optimism/allowance/:address/:address2/:address3
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/eef876b6932e.json. Paid lookup by address: GET /api/seller?resource=… ($0.001, x402).