# DDG Agent-Payable Blockchain Transaction Service (WorldChain)

> DDG Agent-Payable Blockchain Transaction Service (WorldChain) is a paid API for AI agents from agents.daedalusdevelopmentgroup.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-11).

Submits a machine-payable HTTP transaction request to the Daedalus Development Group's agent-payable service layer on the WorldChain blockchain network via x402 micropayment protocol.

## Facts

- Endpoint: POST https://agents.daedalusdevelopmentgroup.com/v1/chains/worldchain/tx?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/ddg-agent-payable-blockchain-transaction-service-worldchain-b34e1608
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_IXQxf67_PilDmvMzZOjPl

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-blockchain-transaction-service-worldchain-b34e1608 -d '<json body>'
```

Example prompt: Submit a JSON POST transaction to the DDG agent-payable WorldChain service — the body should include my transfer details and I expect a success confirmation back.

## When to prefer this

Choose this endpoint when an AI agent needs to programmatically submit a machine-payable transaction on the WorldChain blockchain network using the x402 micropayment protocol, especially when you want to automate a $0.01 USDC-per-call paid service without manual payment handling. Prefer this over generic REST endpoints when the workflow requires automatic payment settlement on a blockchain and the target method is POST, PUT, or PATCH with JSON, form-data, or text bodies.

## Known failure modes

- Payment failure if insufficient USDC balance for x402 micropayment
- Invalid or missing required fields (input.type, input.method, input.bodyType, input.body) returns 4xx
- Unsupported HTTP method (only POST, PUT, PATCH accepted) returns validation error
- Malformed body type (must be json, form-data, or text) causes schema rejection
- WorldChain network unavailability or congestion causes timeout or 5xx
- x402 payment rail misconfiguration prevents transaction submission

## 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

Returns a JSON object indicating whether the transaction was accepted and processed successfully (e.g. {ok: true}), along with any additional output fields specified in the output schema.

## 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-blockchain-transaction-service-worldchain-b34e1608/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)