# DDG Agent-Payable Base JSON-RPC

> DDG Agent-Payable Base JSON-RPC is a paid API for AI agents from agents.daedalusdevelopmentgroup.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-21).

Executes allowlisted read-only JSON-RPC calls against the Base blockchain via a micropayment-gated POST endpoint

## Facts

- Endpoint: POST https://agents.daedalusdevelopmentgroup.com/v1/base/rpc?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/ddg-agent-payable-base-json-rpc-7a6386b7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_2hq2dfBibQxYeQDnnqHHA

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 ddg-agent-payable-base-json-rpc-7a6386b7 -d '<json body>'
```

Example prompt: Call the Base blockchain JSON-RPC endpoint with method eth_getBlockByNumber for the latest block and return the full block data — it costs $0.01 USDC per call via x402.

## When to prefer this

Choose this endpoint when you need micropayment-gated, read-only access to Base blockchain state via standard JSON-RPC without setting up your own node or RPC provider subscription. Ideal for AI agents that need occasional Base chain lookups (balances, blocks, contract calls) and want to pay per-call in USDC via the x402 protocol rather than managing API keys or monthly plans.

## Known failure modes

- Method not in allowlist — only read-only RPC methods are permitted; write methods will be rejected
- Invalid JSON-RPC body format — malformed request body returns error
- Payment failure — insufficient USDC or x402 payment not processed results in 402 response
- Network or RPC node unavailability — upstream Base node errors propagate back
- Rate limiting — too many calls in a short window may be throttled

## How this service works

Allowlisted read-only Base JSON-RPC.

## Output

A JSON object with an 'ok' field and the JSON-RPC response payload containing the requested blockchain state data (block info, balances, call results, etc.) from the Base network.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input",
  "output"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "type": "object"
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST",
      "PUT",
      "PATCH"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": true
  },
  "output": {
   "type": "object",
   "required": [
    "type",
    "example"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "ok": true
    }
   },
   "additionalProperties": true
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/ddg-agent-payable-base-json-rpc-7a6386b7/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agents.daedalusdevelopmentgroup.com](https://www.zero.xyz/host/agents.daedalusdevelopmentgroup.com/llms.txt)