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EVM Chain Lookup
x402
EVM Chain Lookup is a paid API for AI agents from bess-x402.onrender.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-29).
Look up metadata for any EVM-compatible blockchain by chain ID or name, returning chain ID (decimal and hex), native currency, public RPC URLs, block explorers, and testnet flag.
Price / call$0.002
Success—
StatusUnknown
How this service works
Look up any EVM chain by chain ID or name (8453, base, arbitrum): chain ID in decimal and hex, native currency, public RPC URLs, block explorers and testnet flag. Use to configure wallets, RPCs or cross-chain apps.
Output
Returns the chain's decimal and hex chain ID, native currency symbol and name, list of public RPC URLs, block explorer URLs, and a boolean testnet flag — everything needed to configure a wallet, RPC connection, or cross-chain application.
Example use cases
Wallet configuration for new chain
“I'm adding Arbitrum to MetaMask — can you look up its chain ID, native currency, and a public RPC URL so I can fill in the network settings?”
Testnet detection before deployment
“Before I deploy this contract, can you check if chain 80001 is a testnet or mainnet and give me its block explorer URL?”
Cross-chain app RPC setup
“I'm building a multi-chain app and need the RPC endpoints and chain IDs for Optimism, Polygon, and Base — can you look those up one by one?”
Technical details
Endpoint
GEThttps://bess-x402.onrender.com/v1/crypto/chain?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need authoritative EVM chain metadata (RPC URLs, chain IDs, explorers, currency) by querying a chain ID number or well-known chain name like 'base' or 'arbitrum'. Prefer this over hardcoding chain data or scraping chainlist.org, especially in agent workflows that need to configure wallets or validate network settings dynamically.
Side effects
- Unknown chain ID or name returns an error or empty result
- Misspelled chain name may not resolve correctly
- RPC URLs returned may be public community endpoints with rate limits or downtime
- No results for very new or obscure EVM-compatible chains not yet indexed
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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