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Sentinel Token Safety
x402
Sentinel Token Safety is a paid API for AI agents from www.0816.cn, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-18).
Returns a single ALLOW/WARN/BLOCK safety verdict for any ERC-20 token contract on Base before a buy, swap, or approval
Price / call$0.1
Success—
StatusUnknown
How this service works
Token safety pre-flight — one verdict before your agent buys, swaps or approves any ERC-20 on Base (GET ?contract=0x… or POST body {contract}). Call it right before the trade and branch on `verdict`: ALLOW / WARN / BLOCK, with `action`: PROCEED / REVIEW / ABORT and a one-line `reason`. Aggregates honeypot and scam-token detection, buy tax and sell tax, transfer restrictions, hidden mint and owner privileges, and EIP-1967 proxy upgrade risk into a single decision. `checks` carries the raw fields for audit. $0.10 USDC
Output
A JSON object containing: `verdict` (ALLOW, WARN, or BLOCK), `action` (PROCEED, REVIEW, or ABORT), and `reason` (a one-line human-readable explanation). Also includes a `checks` object with raw audit fields covering honeypot detection, buy/sell tax percentages, transfer restrictions, hidden mint flags, owner privilege flags, and EIP-1967 proxy upgrade risk indicators.
Example use cases
Pre-trade honeypot check for DeFi bot
“My trading bot is about to buy token at 0x3Ee505bA316879d246a8fD2b3d7eE63b51B44FAB on Base — run a safety pre-flight on that contract and abort the trade if the verdict is BLOCK or if there's a honeypot detected.”
Wallet app token approval gate
“A user is trying to approve the ERC-20 contract 0xd9aAEc86B65D86f6A7B5B1b0c42FFA531710b6CA in our app on Base — check its safety verdict and warn the user if the action is REVIEW or ABORT.”
Portfolio scanner for suspicious tokens
“I received an airdrop of token contract 0x50c5725949A6F0c72E6C4a641F24049A917DB0Cb on Base and want to know if it's safe — check for hidden mint, owner privileges, sell restrictions, and give me the overall verdict before I do anything with it.”
Technical details
Endpoint
GEThttps://www.0816.cn/v1/base/token-safetyWhen to prefer
Use this endpoint when your agent is about to execute any ERC-20 buy, swap, or approval on the Base network and needs a single authoritative go/no-go decision aggregating honeypot, tax, transfer restriction, and proxy risk signals. Prefer it over individual honeypot checkers or tax scanners when you want one consolidated verdict with an actionable branch (PROCEED/REVIEW/ABORT) rather than assembling multiple raw signals yourself. Especially valuable for autonomous trading agents, DeFi bots, or wallet UIs that need a fast pre-trade safety gate.
Side effects
- Invalid or malformed contract address returns an error response
- Contract address not found on Base network returns unknown/unverifiable verdict
- Network or provider timeout may delay or fail the safety check
- Non-ERC-20 contracts (e.g. NFTs, proxy-only) may return incomplete check coverage
- Rate limiting or payment failure (x402) blocks the request
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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