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QuietSignal Approval Scan — EVM Wallet Token Approval Facts
x402
QuietSignal Approval Scan — EVM Wallet Token Approval Facts is a paid API for AI agents from 83-29-153-50.sslip.io, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Returns on-chain token approval facts for a given EVM address, including approval count and unlimited-like approval detection, over a specified block range.
Price / call$0.01
Success—
StatusUnknown
How this service works
QuietSignal Public Data: independent, read-only rollup, wallet, opportunity, and developer-data facts for agents, paid per request with USDC over HTTP 402 on Base.
Output
A JSON object containing the queried wallet address, the block range inspected (from_block, to_block), a list of approval events, total approval_count, unlimited_like_count (approvals with very high or max allowance), schema version identifier, and a disclaimer that results are observed on-chain facts only.
Example use cases
DeFi wallet approval risk audit
“Check what token approvals the wallet 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045 has granted on-chain and flag any that look unlimited so I know which ones to revoke.”
Block-range approval snapshot
“Fetch all token approvals for address 0xAbCd1234567890AbCd1234567890AbCd12345678 between block 18000000 and block 18500000 so I can see what was approved during that period.”
New wallet onboarding security check
“Before I start using this wallet 0x1111111111111111111111111111111111111111 for DeFi, can you scan it for any existing token approvals and tell me the total count and whether any are effectively unlimited?”
Technical details
Endpoint
GEThttps://83-29-153-50.sslip.io/v1/approval-scanWhen to prefer
Use this endpoint when you need an independent, read-only audit of token approvals for any EVM wallet address, especially when checking for risky unlimited-like allowances. Prefer it over block explorer UIs when you need machine-readable, structured approval facts for programmatic agent workflows. It is particularly useful for DeFi security checks, pre-transaction risk assessment, or wallet hygiene audits.
Side effects
- Missing required 'address' parameter returns a 400 or validation error
- Invalid or non-EVM-format address returns an error
- Payment not provided or insufficient USDC results in HTTP 402 payment required
- Requested block range outside available data returns empty or partial results
- Network or RPC backend issues may return 5xx errors
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"owner": "0x0000000000000000000000000000000000000000",
"range": {
"to_block": 2,
"from_block": 1
},
"schema": "approval-facts/v1",
"approvals": [],
"disclaimer": "Observed on-chain facts only; not a security guarantee, investment advice, or remediation instruction.",
"approval_count": 0,
"unlimited_like_count": 0
}
}Tags
x402
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