ERC-20 Token Metadata Lookup (Base Chain)

x402

ERC-20 Token Metadata Lookup (Base Chain) is a paid API for AI agents from x402-data-api.sigrunner.workers.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-20).

Returns name, symbol, decimals, and total supply (raw and formatted) for any ERC-20 token contract on the Base blockchain.

Price / call$0.002

Seller volume →—

Success—

StatusUnknown

How this service works

ERC-20 metadata on Base: name, symbol, decimals, totalSupply (raw + formatted) for any token contract.

Output

A JSON object containing the token's contract address, human-readable name, ticker symbol, decimal precision, raw total supply (as a string to preserve precision), formatted total supply (as a number), and the chain identifier ('base').

Example use cases

Pre-trade token identity verification

“Before I swap, can you look up the name, symbol, and decimals for the token at 0x833589fCd6eDb6E08f4c7C32D4f71b54bdA02913 on Base so I know exactly what I'm trading?”

Display token info in a DeFi dashboard

“I'm building a dashboard — fetch the full metadata for the Base ERC-20 at 0x50c5725949A6F0c72E6C4a641F24049A917DB0Cb including its name, symbol, decimals, and total supply.”

Validate unknown token contract details

“Someone sent me tokens at address 0x4200000000000000000000000000000000000006 on Base — can you tell me what this token actually is, its symbol, and how many total tokens exist?”

Technical details

Endpoint

GEThttps://x402-data-api.sigrunner.workers.dev/chain/erc20-meta?utm_source=zero.xyz

When to prefer

Use this endpoint when an agent needs on-chain ERC-20 metadata — name, symbol, decimals, or total supply — for a Base chain token without setting up a full RPC node or blockchain SDK. It is especially useful in pre-trade checks, token display UIs, or enrichment pipelines where basic token facts are needed cheaply ($0.01 USDC per call) with no API key required. Prefer this over full blockchain RPC calls when only metadata is needed and low operational overhead is a priority.

Side effects

Invalid or non-ERC-20 contract address returns an error or empty response
Address not deployed on Base (e.g. Ethereum mainnet address) returns no data
Malformed 0x address format causes a bad request error
Payment failure (insufficient USDC or x402 handshake failure) blocks the request
Rate limiting or worker timeout for heavily loaded contracts

Input

Schema · Request body

Field	Type	Description
inputrequired	object
output	object

Output

Schema · Response

{
  "type": "json",
  "example": {
    "name": "USD Coin",
    "chain": "base",
    "token": "0x833589fCd6eDb6E08f4c7C32D4f71b54bdA02913",
    "symbol": "USDC",
    "decimals": 6,
    "total_supply": 3500000000,
    "total_supply_raw": "3500000000000000"
  }
}

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