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DevX ERC-20 Token Safety Pre-Check
x402
DevX ERC-20 Token Safety Pre-Check is a paid API for AI agents from devx-x402-tools.nextill-pos.workers.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-30).
Analyzes an ERC-20 token contract address for security risks, detecting blacklist/bot-list functions, proxy patterns, privileged functions, and returning an overall risk level
Price / call$0.005
Success—
StatusUnknown
How this service works
Pay-per-call utilities for AI agents, no API key or signup: read any web page as clean Markdown ($0.002), link/SEO metadata ($0.001), domain DNS + SPF/DMARC email-security audit ($0.003), ERC-20 token safety pre-check ($0.005), crypto address validation, on-chain payment verification, EIP-681/BIP21/Solana Pay payment requests with QR, multichain USDC balances ($0.01). x402 v2, USDC on Base. Invalid input / upstream failure is never charged.
Output
Returns a JSON object with the token's name, symbol, decimals, chain, overall risk_level (e.g. 'high'), an array of security flags each with a message and severity level, a proxy object indicating any EIP-1967 implementation address, and a privileged_functions_detected map listing dangerous function signatures found in the contract.
Example use cases
DeFi swap safety gate
“I'm about to buy some of this new token at 0x4d224452801aced8b2f0aebe155379bb5d594381 on Ethereum — can you check the contract for honeypot or rug-pull functions before I send any funds?”
Bot detecting proxy contract risk
“My trading bot is about to interact with token contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 on Base — run a token safety audit and flag any privileged admin functions or proxy upgrade patterns.”
Portfolio screening for token risk
“I've got a list of tokens to add to my watchlist — start with 0x6B175474E89094C44Da98b954EedeAC495271d0F on Ethereum and tell me the risk level and any dangerous contract features like blacklisting or pausing.”
Technical details
Endpoint
GEThttps://devx-x402-tools.nextill-pos.workers.dev/v1/token/check?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an AI agent needs a quick, pay-per-call ERC-20 token safety assessment before executing a swap, investment, or DeFi interaction — especially when no API key or subscription is available. It is particularly useful for catching blacklisting, pause, and proxy upgrade risks on Base and other EVM chains. Prefer it over manual block explorer inspection when automation and structured risk output are needed.
Side effects
- Invalid or non-existent contract address returns an error without charge
- Unsupported chain identifier results in an error response
- Upstream RPC or blockchain node failure returns an error without charge
- Contract address that is not an ERC-20 token may return incomplete or unexpected data
- Malformed address format (non-checksummed or truncated) triggers input validation error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"name": "USD Coin",
"chain": "base",
"flags": [
{
"msg": "blacklist/bot-list functions present...",
"level": "high"
}
],
"proxy": {
"eip1967_implementation": "0x..."
},
"symbol": "USDC",
"decimals": 6,
"risk_level": "high",
"privileged_functions_detected": {
"pause": [
"pause()"
],
"blacklist": [
"isBlacklisted(address)"
]
}
}
}Tags
x402
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