# DDG Ethereum JSON-RPC Proxy

> DDG Ethereum JSON-RPC Proxy is a paid API for AI agents from agents.daedalusdevelopmentgroup.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-12).

Routes Ethereum JSON-RPC calls through a machine-payable proxy endpoint, settling $0.002 USDC per call via x402 payment protocol

## Facts

- Endpoint: POST https://agents.daedalusdevelopmentgroup.com/v1/ethereum/rpc?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/ddg-ethereum-json-rpc-proxy-dda585c0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_wLnG22yTY2rUsHHHJHpWM

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-ethereum-json-rpc-proxy-dda585c0 -d '<json body>'
```

Example prompt: Call eth_getBalance for address 0xAbC...123 on Ethereum mainnet — pay the $0.002 USDC fee per call using x402 and give me the balance in wei.

## When to prefer this

Choose this endpoint when you need pay-per-call Ethereum JSON-RPC access without committing to a monthly node subscription (Alchemy, Infura, QuickNode). Ideal for AI agents that make sporadic or unpredictable numbers of RPC calls and want to settle micropayments autonomously via x402 USDC. Not suitable for high-frequency trading bots that need sub-millisecond latency or bulk archival node access.

## Known failure modes

- Payment not settled — x402 payment failure causes request rejection before RPC call is made
- Invalid JSON-RPC method or malformed body — returns RPC error with code -32600 or -32601
- Upstream Ethereum node unavailable — proxy may return 502 or timeout
- Insufficient USDC balance for x402 payment — call is refused before execution
- Unsupported HTTP method — only POST/PUT/PATCH accepted per schema

## How this service works

DDG agent-payable service request

## Output

A JSON-RPC compliant response object matching the Ethereum JSON-RPC spec, containing the result of the requested method call (e.g. balance in hex wei, transaction hash, block object, or call return data). Response shape follows {ok: true} envelope plus the standard jsonrpc result field.

## 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-ethereum-json-rpc-proxy-dda585c0/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)