# NodeFlare Robinhood Chain RPC (Chain 4663)

> NodeFlare Robinhood Chain RPC (Chain 4663) is a paid API for AI agents from rpc.nodeflare.app, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).

Provides JSON-RPC over HTTPS access to Robinhood Chain (chain ID 4663) including archive, trace, and debug methods, with pay-per-request pricing in USDC via x402.

## Facts

- Endpoint: POST https://rpc.nodeflare.app/robinhood/x402
- 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/nodeflare-robinhood-chain-rpc-chain-4663-049f73cd
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Nl_ClmcDLIJOnBGavPbtm

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 nodeflare-robinhood-chain-rpc-chain-4663-049f73cd -d '<json body>'
```

Example prompt: Call eth_getLogs on Robinhood Chain (chain 4663) to pull all Transfer events for the ERC-20 token at 0xAbCd...1234 from block 100000 to 200000.

## When to prefer this

Choose this endpoint when you need direct, low-level EVM JSON-RPC access to Robinhood Chain (chain 4663) — especially for archive queries, eth_getLogs event indexing, trace or debug methods, or smart contract simulation — and you want pay-per-request USDC billing with no API key or account setup required. Prefer it over generic RPC providers when you need x402-compatible agent-native payments or bare-metal node reliability for this specific chain.

## Known failure modes

- Invalid JSON-RPC method name returns error code -32601
- Malformed params array returns error code -32602
- Requesting a pruned block on a non-archive method returns null or error
- Insufficient USDC balance or x402 payment failure results in 402 Payment Required
- Rate limit or node overload may return 429 or 503
- Unsupported method on this chain returns -32004

## How this service works

Robinhood Chain RPC (chain 4663): JSON-RPC over HTTPS on NodeFlare's own bare-metal nodes. Pay per request in USDC, no account or API key - built for AI agents. All methods including eth_getLogs, eth_call, trace, and debug (archive) - good for indexing, event queries, and simulation. Simple calls $0.001; heavy calls priced by compute units. One of the first independent x402 RPC providers for this chain.

## Output

A standard JSON-RPC 2.0 response object containing the result field (or error field) for the requested Ethereum-compatible method — e.g. hex-encoded values for eth_getBalance, log arrays for eth_getLogs, trace objects for trace_transaction, or simulated return data for eth_call.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "id": {
   "type": [
    "number",
    "string"
   ]
  },
  "method": {
   "type": "string"
  },
  "params": {
   "type": "array"
  },
  "jsonrpc": {
   "type": "string",
   "const": "2.0"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/nodeflare-robinhood-chain-rpc-chain-4663-049f73cd/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from rpc.nodeflare.app](https://www.zero.xyz/host/rpc.nodeflare.app/llms.txt)