# DDG Arbitrum RPC Endpoint

> DDG Arbitrum RPC Endpoint is a paid API for AI agents from agents.daedalusdevelopmentgroup.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-19).

Provides a pay-per-call JSON-RPC gateway to the Arbitrum blockchain network via the x402 payment protocol

## Facts

- Endpoint: POST https://agents.daedalusdevelopmentgroup.com/v1/chains/arbitrum/rpc?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-19
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/ddg-arbitrum-rpc-endpoint-45774c83
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ohqFe9Amx8obEY64rbFar

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-arbitrum-rpc-endpoint-45774c83 -d '<json body>'
```

Example prompt: Submit this signed transaction to the Arbitrum network via DDG's pay-per-call RPC gateway: 0x02f8748201...

## When to prefer this

Choose this endpoint when you need metered, pay-per-call access to the Arbitrum blockchain RPC without committing to a subscription plan. Ideal for agents that make infrequent or bursty Arbitrum RPC calls and want to pay $0.01 USDC per request via the x402 protocol rather than managing API keys or monthly quotas.

## Known failure modes

- Insufficient USDC balance to cover $0.01 per-call fee — payment rejected
- Malformed JSON-RPC body — returns RPC parse error
- Invalid or unsupported RPC method — returns method not found error
- Arbitrum node unavailable or rate-limited — returns gateway error
- Transaction reverted on-chain — returns execution revert error

## How this service works

DDG agent-payable service request

## Output

Returns a standard Ethereum/Arbitrum JSON-RPC response object including the result field (block data, transaction hash, balance, contract return value, etc.) or an error object if the call fails.

## 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-arbitrum-rpc-endpoint-45774c83/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)