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Polygon PoS ERC-20 Token Risk & Due-Diligence Snapshot
x402
Polygon PoS ERC-20 Token Risk & Due-Diligence Snapshot is a paid API for AI agents from onchaincheck.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-29).
Returns a 0-100 risk score with reasons, token metadata, ownership/proxy info, privileged function flags, and live Uniswap v3 price/liquidity for any ERC-20 token on Polygon PoS.
Price / call$0.01
Success—
StatusUnknown
How this service works
Rug check and due-diligence snapshot of an ERC-20 token on Polygon PoS: a 0-100 risk score with reasons, name, symbol, decimals, supply, owner and whether ownership is renounced, upgradeable-proxy detection, owner-only functions found in the bytecode (mint, pause, blacklist, fee changes), and USD price, liquidity and FDV from the deepest WPOL or USDC pool on Uniswap v3. Facts only, no buy or sell opinion.
Output
A JSON object containing: a numeric risk score (0-100) and level (low/medium/high) with human-readable reasons and a summary; token name, symbol, decimals, and total supply; owner address and whether ownership is renounced; whether the contract is an upgradeable proxy; boolean flags for privileged functions (mint, pause, blacklist, fee changes, trading switch, max transaction); market data from the deepest Uniswap v3 WPOL or USDC pool including USD price, quote-side liquidity, FDV, fee tier, and pool address; and the POL/USD native price from Chainlink.
Example use cases
Pre-investment token safety check
“Before I buy this Polygon token at 0x2791Bca1f2de4661ED88A30C99A7a9449Aa84174, can you check if it's a rug pull risk — specifically whether the owner can mint, pause trading, or blacklist wallets, and whether the contract is upgradeable?”
DeFi liquidity due diligence
“What's the current USD liquidity and fully diluted value for the Polygon token at 0x0d500B1d8E8eF31E21C99d1Db9A6444d3ADf1270 on Uniswap v3, and which token is it paired with in the deepest pool?”
Ownership renouncement verification
“Has ownership been renounced on the Polygon PoS contract 0x7ceB23fD6bC0adD59E62ac25578270cFf1b9f619, and is it behind an upgradeable proxy? I need to know before adding it to our whitelist.”
Technical details
Endpoint
GEThttps://onchaincheck.dev/polygon/token?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a fast, factual due-diligence snapshot of an ERC-20 token specifically on Polygon PoS — especially when you want risk scoring, ownership/proxy analysis, privileged function detection, and live Uniswap v3 liquidity all in a single call. Prefer it over generic block explorers when you need structured, machine-readable output for agent decision-making. Choose the Ethereum or Base sibling endpoints for tokens on those chains instead.
Side effects
- Invalid or non-checksummed address returns a 400 error
- Non-existent or non-ERC-20 contract address may return empty/null token metadata
- Token with no Uniswap v3 WPOL or USDC pool will have noLiquidPool flag set true and null market data
- Bytecode analysis may produce false positives or false negatives for privileged function detection
- Rate limiting or payment failure returns a 402 if x402 payment is not provided
- Polygon RPC node downtime may cause transient 503 errors
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"name": "ChainLink Token",
"risk": {
"level": "low",
"score": 0,
"reasons": [],
"summary": "No risky powers or liquidity problems found."
},
"asset": {
"known": false
},
"chain": "polygon",
"flags": {
"canMint": false,
"ownerCanAct": false,
"upgradeable": false,
"canBlacklist": false,
"noLiquidPool": false,
"canChangeFees": false,
"thinLiquidity": false
},
"notes": "Privileged functions are detected from bytecode selectors and may have false positives or misses. Liquidity is the WPOL or USDC held by the deepest Uniswap v3 pool found.",
"owner": null,
"proxy": {
"upgradeable": false
},
"market": {
"dex": "uniswap-v3",
"pool": "0x79E4240E33C121402dfc9009dE266356c91f241d",
"priceUsd": 12.1853,
"feeTierBps": 30,
"pairedWith": "USDC",
"poolsFound": 8,
"fullyDilutedValueUsd": 13770000,
"quoteSideLiquidityUsd": 89140
},
"symbol": "LINK",
"address": "0x53E0bca35eC356BD5ddDFebbD1Fc0fD03FaBad39",
"decimals": 18,
"nativeUsd": {
"price": 0.0920898,
"source": "Chainlink POL/USD",
"symbol": "POL",
"updatedAt": "2026-10-23T06:17:15.000Z"
},
"totalSupply": 1130446.8868,
"ownershipRenounced": null,
"privilegedFunctions": {
"mint": false,
"pause": false,
"setFees": false,
"blacklist": false,
"tradingSwitch": false,
"maxTransaction": false
}
}
}Tags
x402
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