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Token Facts – Base ERC20 Onchain Analysis
x402
Token Facts – Base ERC20 Onchain Analysis is a paid API for AI agents from token-facts.x402supply.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-30).
Returns onchain ERC20 token facts for a Base chain contract address, including token shape, honeypot-style selector checks, and an ungraded admin-powers profile (proxy, owner, mint, blacklist, pause) with raw evidence per check.
Price / call$0.005
Success—
StatusUnknown
How this service works
Onchain facts for a Base ERC20 address: ERC20 shape, honeypot-style selectors and an ungraded adminPowers profile (proxy, owner, mint, blacklist, pause) with raw evidence per check. No DEX data, grade is n/a. No LLM.
Output
Returns structured onchain data for the given Base ERC20 address including: ERC20 shape conformance, honeypot-style selector findings, and an admin-powers profile covering proxy status, owner address, mint capability, blacklist capability, and pause capability — each with raw onchain evidence. No DEX price data is included, and no overall safety grade is assigned.
Example use cases
Pre-investment token safety audit
“Before I buy this Base token at 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913, can you check whether the contract has honeypot selectors, an owner with special controls, or any mint/blacklist/pause functions I should worry about?”
DeFi bot rug-risk filter
“I'm building a sniper bot on Base — can you run a token facts check on 0x2Ae3F1Ec7F1F5012CFEab0185bfc7aa3cf0DEc22 and flag whether it has proxy upgradability or any admin powers that could rug holders?”
Portfolio token contract review
“I hold some tokens at 0x50c5725949A6F0c72E6C4a641F24049A917DB0Cb on Base — can you pull all the onchain facts about the contract and show me the raw evidence for each admin-powers check like minting, blacklisting, and pausing?”
Technical details
Endpoint
POSThttps://token-facts.x402supply.com/tools/token_facts?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need purely onchain, no-LLM, no-DEX token safety facts for a Base ERC20 contract — specifically when you want raw evidence per admin-powers check (proxy, owner, mint, blacklist, pause) and honeypot selector flags without any price or liquidity context. Prefer this over DEX-based screeners when the token has no liquidity yet or when you specifically need contract-level admin-control evidence rather than market signals.
Side effects
- Invalid or malformed address (not a 42-character 0x hex string) returns a validation error
- Address is not a deployed ERC20 contract on Base chain — may return empty or partial results
- Contract uses non-standard ABI patterns that prevent selector detection — checks may return inconclusive
- Network or RPC errors connecting to Base chain — returns service error
- Payment of $0.005 USDC not completed — request rejected before execution
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| address | string | Base (chain 8453) ERC20 contract address, 0x plus 40 hex characters |
Output
Schema · Response
{
"type": "json",
"example": {
"asOf": "2026-10-10T03:08:28.110Z",
"grade": "n/a",
"checks": [
{
"id": "erc20",
"axis": "rugRisk",
"name": "ERC20 contract",
"detail": "USD Coin (USDC), 6 decimals, supply 4405234499.055562.",
"status": "pass",
"evidence": {
"name": "USD Coin",
"issuer": "Circle",
"symbol": "USDC",
"decimals": 6,
"codeBytes": 1852,
"totalSupply": "4405234499055562",
"totalSupplyFormatted": "4405234499.055562"
}
},
{
"id": "proxy",
"axis": "adminPowers",
"name": "Proxy / upgradeable",
"detail": "Upgradeable OpenZeppelin legacy (zos) proxy, implementation 0x2ce6311ddae708829bc0784c967b7d77d19fd779, admin 0x4fc7850364958d97b4d3f5a08f79db2493f8ca44. Logic can be swapped.",
"status": "caution",
"evidence": {
"admin": "0x4fc7850364958d97b4d3f5a08f79db2493f8ca44",
"upgradeable": true,
"slotStandard": "OpenZeppelin legacy (zos)",
"adminSlotRead": true,
"implementation": "0x2ce6311ddae708829bc0784c967b7d77d19fd779"
}
},
{
"id": "owner",
"axis": "adminPowers",
"name": "Owner privileges",
"detail": "Ownership not renounced, externally owned account (EOA) owner 0x3abd6f64a422225e61e435bae41db12096106df7.",
"status": "caution",
"evidence": {
"owner": "0x3abd6f64a422225e61e435bae41db12096106df7",
"renounced": false,
"ownerIsContract": false
}
},
{
"id": "bytecode",
"axis": "adminPowers",
"name": "Admin functions in bytecode",
"detail": "Selectors found for: mint, blacklist/blocklist, pause.",
"status": "caution",
"evidence": {
"note": "Selector presence shows a function exists in the code, not who can call it or that it is abused.",
"matches": {
"mint": [
"mint(address,uint256)"
],
"pause": [
"pause()",
"unpause()",
"paused()"
],
"blacklist": [
"blacklist(address)",
"isBlacklisted(address)"
]
},
"scanned": [
{
"bytes": 1852,
"label": "token",
"address": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913"
},
{
"bytes": 23464,
"label": "implementation",
"address": "0x2ce6311ddae708829bc0784c967b7d77d19fd779"
}
],
"groupsFound": [
"mint",
"blacklist",
"pause"
]
}
},
{
"id": "honeypot",
"axis": "rugRisk",
"name": "Honeypot-style signals",
"detail": "No fee/tax setter or max-tx/wallet limit selectors found.",
"status": "pass",
"evidence": {
"note": "Selector presence shows a function exists in the code, not who can call it or that it is abused.",
"matches": {},
"scanned": [
{
"bytes": 1852,
"label": "token",
"address": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913"
},
{
"bytes": 23464,
"label": "implementation",
"address": "0x2ce6311ddae708829bc0784c967b7d77d19fd779"
}
],
"groupsFound": []
}
}
],
"issuer": {
"name": "Circle",
"symbol": "USDC",
"verifiedBy": "address listed in known-issuer table and on-chain symbol() matches"
},
"address": "0x833589fcd6edb6e08f4c7c32d4f71b54bda02913",
"chainId": 8453,
"sources": [
"https://mainnet.base.org"
],
"summary": "USDC (0x8335...2913) on Base: facts only, no grade (needs DEX data, use token_verdict). Admin powers (not graded): high, upgradeable proxy, owner not renounced, mint, blacklist, pause. Issuer: Circle.",
"coverage": 1,
"riskScore": null,
"adminPowers": {
"note": "Informational centralization profile. Not counted in riskScore or grade. Regulated issuers and many legitimate tokens keep these powers.",
"level": "high",
"powers": [
"upgradeable proxy",
"owner not renounced",
"mint",
"blacklist",
"pause"
]
}
}
}Tags
x402
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