ERC-20 token facts API: owner, proxy, pause and mint flags

$0.01 per call · failed calls are never charged · no account or subscription: pay per call with a card key or USDC

Base only (other chains: <chain>_token_info). Live on-chain facts for an ERC-20 token on Base: name, symbol, decimals, total supply, owner and whether ownership is renounced, paused state, proxy detection (EIP-1967, minimal proxy) with implementation and admin, and bytecode heuristics for mint, pause, blacklist and fee-setter functions. Use for token due diligence and rug-pull or honeypot screening before a swap.

When to use it

Read a Base token's name, symbol, decimals, supply and owner on chain
See whether ownership is renounced, transfers are paused or the token is a proxy
Spot mint, pause, blacklist and fee-setter functions in the bytecode

Guide: Token honeypot check API

Run it free (25 free calls) Buy credits by card (from $1) Example result (JSON)

Inputs

Name	Type	Description
`address` (required)	string	Token contract address on Base (0x...)

Request

Over HTTP, with a card key from /credits:

curl -H "Authorization: Bearer adt_…" "https://tools.funwords.eu/token?address=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"

Or one of your 25 free calls, no key:

curl "https://tools.funwords.eu/token?address=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913&trial=1"

Without a key, the same URL answers 402 Payment Required with x402 and MPP terms, so an agent with a wallet pays per call in USDC (Base, Polygon, Arbitrum or Solana over x402; Base or Tempo over MPP) and retries.

Example result

{
  "chain": "base",
  "address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
  "name": "USD Coin",
  "symbol": "USDC",
  "decimals": 6,
  "totalSupplyFormatted": "4333612020.876957",
  "owner": "0x3ABd6f64A422225E61E435baE41db12096106df7",
  "ownershipRenounced": false,
  "paused": false,
  "proxy": {
    "isProxy": true,
    "kind": "zeppelinos-legacy",
    "implementation": "0x2ce6311ddae708829bc0784c967b7d77d19fd779",
    "admin": "0x4fc7850364958d97b4d3f5a08f79db2493f8ca44"
  },
  "capabilities": {
    "mint": false,
    "burn": false,
    "pause": false,
    "blacklist": false,
    "feeSetter": false
  }
}

From an AI agent (MCP)

Add the MCP server to Claude, Cursor or any MCP client. This tool is token, and the first 25 successful calls are free:

https://tools.funwords.eu/mcp

Questions

Which chain?

Base only; other chains have their own token_info tools.

Do I also get market data?

No. /token-report adds a risk verdict plus live DEX liquidity and volume.

How do I pay?

Each successful call costs $0.01; failed calls are not charged. The first 25 calls are free. Then pay with card credits (from $1; the key goes in an Authorization header or, for clients that can only fetch a URL, as api_key= in the URL) or per call in USDC over x402 or MPP. No account is needed.