# LION Keyless Base RPC JSON-RPC Proxy

> LION Keyless Base RPC JSON-RPC Proxy is a paid API for AI agents from lionx402.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-13).

Executes keyless JSON-RPC calls against the Base (eip155:8453) blockchain network, paid per-call in USDC via x402 protocol

## Facts

- Endpoint: GET https://lionx402.com/api/x402/keyless-base-rpc-json
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/lion-keyless-base-rpc-json-rpc-proxy-1287707d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_SlB46fiO9sXf1qLlB20Aa

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 lion-keyless-base-rpc-json-rpc-proxy-1287707d
```

Example prompt: Can you call eth_getBalance for address 0xAbC123... on the Base network right now, paying per-call with no API key needed?

## When to prefer this

Use this endpoint when an AI agent needs to read from the Base blockchain without pre-registering API keys or committing to a subscription — ideal for pay-as-you-go, low-volume, or ephemeral agent workflows that call Base JSON-RPC methods and want to pay micro-amounts per call in USDC on Base via x402.

## Known failure modes

- Payment not received or insufficient USDC balance — request rejected with 402
- Invalid JSON-RPC method or malformed params — JSON-RPC error response returned
- Base network congestion or node unavailability — timeout or 5xx error
- Unsupported RPC method — error indicating method not allowed
- Invalid address format in params — JSON-RPC invalid params error

## How this service works

Keyless multi-chain JSON-RPC reads, Base + Ethereum, from $0.001 (?chain=ethereum)

## Output

A JSON object containing the standard JSON-RPC 2.0 response with id, jsonrpc version, and result fields (typically a hex-encoded value), along with the network identifier eip155:8453 and an asset_id of KEYLESS_BASE_RPC_001.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "method"
     ],
     "properties": {
      "chain": {
       "type": "string",
       "description": "base|ethereum"
      },
      "method": {
       "type": "string",
       "description": "JSON-RPC method e.g. eth_blockNumber"
      },
      "params": {
       "type": "string",
       "description": "JSON array string of params"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "service": "LION Verified Company",
  "asset_id": "LION",
  "resolved": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/lion-keyless-base-rpc-json-rpc-proxy-1287707d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from lionx402.com](https://www.zero.xyz/host/lionx402.com/llms.txt)