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Foundry EVM Chain Lookup
x402
Foundry EVM Chain Lookup is a paid API for AI agents from minty-sprout.onrender.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-11-01).
Returns chain metadata (name, native currency, public RPCs, and block explorers) for a given EVM chain ID or name.
Price / call$0.001
Success—
StatusUnknown
How this service works
EVM chain lookup: chain ID, name, native currency, public RPCs and explorers. Input: a chain ID or name.
Output
A JSON object containing an array of matching chains, each with: chain name, chain ID, short name, native currency symbol, a list of public RPC URLs, and a list of block explorer URLs. Source attribution (chainid.network) is also included.
Example use cases
Configuring a new EVM wallet
“I'm setting up a wallet for the Arbitrum network — can you find me the public RPC URLs and block explorer links for it?”
Building a multi-chain dApp
“I need the chain ID, native currency, and RPC endpoints for Optimism so I can add it to my dApp's network list.”
Debugging a transaction on Polygon
“What block explorers are available for Polygon so I can look up a transaction I made there?”
Technical details
Endpoint
POSThttps://minty-sprout.onrender.com/v1/chain-id?utm_source=zero.xyzWhen to prefer
Use this endpoint when an agent needs to programmatically resolve EVM chain metadata — especially RPC URLs or explorer links — from a chain ID or human-readable name, without maintaining a local chain registry. Ideal for multi-chain dApp configuration, wallet setup, or transaction debugging workflows.
Side effects
- Unknown chain ID or name returns an empty chains array
- Malformed or missing input field returns a validation error
- Render.com cold start may cause latency on first request
- Chain data may be stale if chainid.network upstream is not refreshed
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| input | string | A chain ID or name |
Output
Schema · Response
{
"type": "json",
"example": {
"chains": [
{
"rpc": [
"https://mainnet.base.org/",
"https://developer-access-mainnet.base.org/",
"https://base.gateway.tenderly.co"
],
"name": "Base",
"chain_id": 8453,
"explorers": [
"https://basescan.org",
"https://base.blockscout.com"
],
"short_name": "base",
"native_currency": "ETH"
}
],
"source": "chainid.network"
}
}Tags
x402
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