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Tanod chainpeek Token Approvals Audit
x402
Tanod chainpeek Token Approvals Audit is a paid API for AI agents from tanod.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-14).
Returns live ERC-20 and Permit2 token allowances for a wallet on Base or Ethereum, with risk flags and unsigned revoke transactions ready to broadcast.
Price / call$0.005
Success—
StatusUnknown
How this service works
chainpeek (Tanod) live token approvals of a wallet: ERC-20 and Permit2 allowances with risk flags and unsigned revoke transactions, on Base or Ethereum. Use when an agent must list and revoke its wallet's live token approvals, on a schedule or after a risky signature.
Output
A list of live ERC-20 and Permit2 allowances for the audited wallet, each annotated with risk flags (e.g. unlimited allowance, unknown spender, stale usage), the spender address, token details, and a pre-built unsigned revoke transaction payload ready to sign and broadcast.
Example use cases
Post-phishing approval sweep
“I just clicked a sketchy link and may have signed something bad. Can you audit all my token approvals on Ethereum for wallet 0xDeAd...BeeF and flag anything risky or unlimited so I can revoke it?”
Scheduled DeFi hygiene check
“Every week, check my Base wallet 0x1234...ABCD for any ERC-20 or Permit2 approvals that haven't been used in the last 90 days and give me revoke transactions for the stale ones.”
Pre-known-spender allowance audit
“I want to audit exactly what USDC and USDT allowances these three DEX routers have on my Ethereum wallet 0x9876...FEDC — the spender addresses are 0xAAA...111, 0xBBB...222, and 0xCCC...333.”
Technical details
Endpoint
POSThttps://tanod.dev/v1/chain/approvals?utm_source=zero.xyzWhen to prefer
Use this endpoint when an agent needs to audit a specific wallet's live token spending permissions on Base or Ethereum, especially after a suspicious signature, on a security schedule, or when revoke-ready transaction payloads are needed. Prefer it over generic block explorer queries because it combines ERC-20 approval event scanning, direct Permit2 slot reads, risk classification, and unsigned revoke transaction generation in a single call.
Side effects
- Invalid wallet or token address format (must be 0x + 40 hex chars)
- Unsupported chain value (only 'base' or 'ethereum' accepted)
- Token or spender list exceeds 50 entries (400 error)
- tokens × spenders product exceeds 200 (coverage cap)
- RPC or indexer timeout for high lookback_blocks ranges
- Payment failure or insufficient USDC balance (x402 protocol rejection)
- No approvals found returns empty list, not an error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| chain | string | base or ethereum (the chains with built-in USDC and USDT here). |
| tokens | — | Up to 50 token contracts to audit. Default: USDC, USDT and up to 18 tokens the wallet has sent (from its transfer history). |
| wallet | string | The wallet whose approvals are audited (0x + 40 hex). |
| spenders | — | Up to 50 spender addresses whose ERC-20 and Permit2 allowances are read directly on every audited token, however old (tokens x spenders at most 200). The full-coverage path for spenders you know. |
| stale_days | integer | An allowance is stale when the spender pulled nothing from the wallet in this many days (1-3,650; default 90). |
| lookback_blocks | integer | Latest blocks scanned for approval events (0-6,000; default 6,000, about 3.3 hours on Base and 20 hours on Ethereum). 0 scans nothing and checks `spenders` and Permit2 only. |
Tags
x402
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