# PennyRail EVM Chain Info

> PennyRail EVM Chain Info is a paid API for AI agents from pennyrail.vercel.app, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).

Returns machine-readable EVM blockchain chain information for a given chain identifier via a paid settlement endpoint

## Facts

- Endpoint: POST https://pennyrail.vercel.app/api/p/nano/chain.info--evm-chain-info
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/pennyrail-evm-chain-info-4bea9cc6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_vsjuxoEkJmVTgJLpZQScB

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability pennyrail-evm-chain-info-4bea9cc6 -d '<json body>'
```

Example prompt: Can you look up the chain info for the Polygon network — I need the chain ID, native currency, and any RPC or explorer URLs associated with it?

## When to prefer this

Use this endpoint when you need structured, machine-readable EVM chain metadata (chain ID, RPC URLs, currency info, explorers) for a given network name or identifier, especially within a micropayment-enabled agent workflow using x402 settlement. Prefer this over static chain lists when freshness and pay-per-query pricing suit your use case.

## Known failure modes

- Invalid or unrecognized chain name/identifier returns an error or empty result
- Malformed input string causes a 400-level error
- Payment failure or insufficient balance prevents endpoint access
- Chain not yet indexed or supported returns null or empty object
- Timeout if the upstream chain registry is unavailable

## How this service works

Machine-readable settlement service

## Output

Returns a JSON object containing EVM chain metadata including chain ID, network name, native currency details, RPC endpoint URLs, and block explorer links for the requested chain.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "additionalProperties": true
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/pennyrail-evm-chain-info-4bea9cc6/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from pennyrail.vercel.app](https://www.zero.xyz/host/pennyrail.vercel.app/llms.txt)