# Daedalus Development Group WorldChain RPC Endpoint

> Daedalus Development Group WorldChain 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 2026-10-15).

Provides a pay-per-call JSON-RPC interface to the WorldChain blockchain network, billed at $0.01 USDC per request via x402 payment protocol

## Facts

- Endpoint: POST https://agents.daedalusdevelopmentgroup.com/v1/chains/worldchain/rpc?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/daedalus-development-group-worldchain-rpc-endpoint-d89c11b1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_VMhCu-iRMwXfZE1conlPa

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 daedalus-development-group-worldchain-rpc-endpoint-d89c11b1 -d '<json body>'
```

Example prompt: Send a JSON-RPC call to the WorldChain network to get the current block number — use the DDG pay-per-call RPC endpoint and charge my wallet the $0.01 USDC fee automatically.

## When to prefer this

Choose this endpoint when you need programmatic, pay-per-call access to the WorldChain blockchain without managing a subscription or API key. It is ideal for agents that make infrequent or variable-volume RPC calls and prefer microtransaction billing via the x402 USDC protocol. Prefer this over self-hosted nodes when you want zero infrastructure overhead and over subscription RPCs when you want usage-based pricing with no monthly commitment.

## Known failure modes

- Payment failure: insufficient USDC balance triggers 402 Payment Required before the RPC call is executed
- Invalid JSON-RPC method: returns a JSON-RPC error with code -32601 (method not found)
- Malformed request body: returns a 400 Bad Request if required fields are missing
- Network unavailability: WorldChain node may be unreachable, returning a 503 or timeout
- Rate limiting: excessive calls may be throttled beyond the per-call payment model
- Transaction rejection: broadcast transactions may be rejected by the network for insufficient gas or invalid nonce

## How this service works

Machine-payable DDG services for AI agents. Current public live payment rails are x402 multi-chain USDC and direct-crypto auto/manual for public receiving-address families. MPP/Stripe/Tempo is installed but pending live provider env plus penny-settlement proof before any MPP-live advertisement. DDG sells bounded artifacts/results, not raw provider account access.

## Output

A standard JSON-RPC response object from the WorldChain node, containing the result field with on-chain data (block info, balance, transaction receipt, contract return value, etc.) or an error field if the call failed. The response mirrors the Ethereum JSON-RPC specification adapted for WorldChain.

## 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/daedalus-development-group-worldchain-rpc-endpoint-d89c11b1/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)