# GPUOps Blockchain Data MCP – Base RPC

> GPUOps Blockchain Data MCP – Base RPC is a paid API for AI agents from chain.gpuops.io, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).

Provides JSON-RPC access to Base chain blockchain data via a pay-per-call x402 API

## Facts

- Endpoint: POST https://chain.gpuops.io/v1/rpc/base
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/gpuops-blockchain-data-mcp-base-rpc-cfd0205a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_qV7EOI4tiS50wwVGfIk43

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 gpuops-blockchain-data-mcp-base-rpc-cfd0205a -d '<json body>'
```

Example prompt: Can you check the current ETH balance of wallet address 0xAbC123... on the Base chain using a standard eth_getBalance JSON-RPC call?

## When to prefer this

Choose this endpoint when you need direct EVM JSON-RPC access to the Base chain with pay-per-call micropayment pricing (no subscription required), especially useful for agents that make sporadic or low-volume blockchain queries and want to avoid monthly API key commitments

## Known failure modes

- Invalid JSON-RPC method name returns error code -32601
- Malformed params array returns parse error -32700
- Payment failure via x402 results in 402 response before execution
- Unsupported chain-specific method returns -32603 internal error
- Network congestion may cause delayed responses

## How this service works

Multi-chain blockchain data API. 7 chains. x402 pay-per-call with USDC on Base.

## Output

A standard JSON-RPC response object containing the requested blockchain data such as block info, transaction details, account balances, contract storage, or event logs from the Base chain

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "id": {
   "type": "integer"
  },
  "method": {
   "type": "string"
  },
  "params": {
   "type": "array"
  },
  "jsonrpc": {
   "type": "string"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/gpuops-blockchain-data-mcp-base-rpc-cfd0205a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from chain.gpuops.io](https://www.zero.xyz/host/chain.gpuops.io/llms.txt)