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Base Token Safety Check (x402)
x402
Base Token Safety Check (x402) is a paid API for AI agents from base-token-safety.frcompanycheck.workers.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-12).
Runs a live honeypot and rug-risk simulation on a Base ERC-20 token address, returning a GREEN/ORANGE/RED verdict with buy/sell feasibility, tax rates, and liquidity data.
Price / call$0.01
Success—
StatusUnknown
How this service works
Honeypot / rug-risk verdict (GREEN / ORANGE / RED) for a Base ERC-20 token. Live buy→transfer→sell simulation via eth_call (no transaction). Pay per call with x402 (USDC on Base). Not financial advice.
Output
Returns a JSON object with: a verdict string (GREEN, ORANGE, or RED), boolean flags for can_buy and can_sell, sell_tax_pct, liquidity_eth, owner_renounced, a list of dangerous_functions, cautions and red_flags arrays, a sell_test block showing the simulated venue, roundtrip_loss_pct, and a passes_filter boolean. The simulation uses eth_call so no on-chain transaction is submitted.
Example use cases
Memecoin honeypot check before buying
“Before I ape into this Base token at 0x1234567890abcdef1234567890abcdef12345678, can you simulate a buy and sell to see if it's a honeypot and what the sell tax looks like?”
DeFi bot pre-trade safety gate
“Run a rug-risk check on Base token 0xabcdefabcdefabcdefabcdefabcdefabcdefabcd — I need to know if it's GREEN, ORANGE, or RED and whether there are any dangerous contract functions before my bot places a trade.”
Token listing due diligence
“I'm considering listing this Base ERC-20 token 0xDeAdBeEfDeAdBeEfDeAdBeEfDeAdBeEfDeAdBeEf on my platform — can you check if ownership is renounced, whether transfers can be frozen, and what the overall safety verdict is?”
Technical details
Endpoint
GEThttps://base-token-safety.frcompanycheck.workers.dev/v1/token/%7Baddress%7D?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a fast, live simulation-based honeypot and rug-risk verdict specifically for Base network ERC-20 tokens, especially before automated trading or listing decisions. It is preferable over static on-chain analysis tools because it actually simulates buy→transfer→sell via eth_call, revealing hidden sell taxes and frozen-transfer traps that static code analysis misses. Choose this over generic token scanners when the token is on Base and you need a structured GREEN/ORANGE/RED verdict with itemized cautions.
Side effects
- Invalid or non-ERC-20 contract address returns an error or missing_key_data fields
- Token with no Uniswap V3 liquidity may fail the sell simulation and return incomplete results
- Payment failure via x402 (USDC on Base) results in 402 response before analysis runs
- Rate limiting or RPC timeout on Base may cause partial or failed response
- Very new tokens with no trading history may lack sufficient data for a full verdict
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| properties | string |
Output
Schema · Response
{
"type": "json",
"example": {
"chain": "base",
"checks": {
"can_buy": true,
"can_sell": true,
"is_proxy": false,
"sell_tax_pct": 0,
"liquidity_eth": 79.19,
"owner_renounced": true,
"dangerous_functions": [
"pause"
]
},
"symbol": "DEGEN",
"address": "0x4ed4E862860beD51a9570b96d89aF5E1B0Efefed",
"verdict": "ORANGE",
"cautions": [
"bytecode contains pause/unpause: transfers can be frozen by the owner"
],
"red_flags": [],
"sell_test": {
"venue": "uniswap_v3_1%",
"buy_ok": true,
"eth_in": 0.05,
"sell_ok": true,
"roundtrip_loss_pct": 11.8
},
"passes_filter": true,
"missing_key_data": []
}
}Tags
x402
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