# DDG Transaction Smoke Test

> DDG Transaction Smoke Test is a paid API for AI agents from agents.daedalusdevelopmentgroup.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).

Performs a $0.01 USDC machine-payable smoke test transaction via x402 payment rail, returning a receipt confirming end-to-end payment flow works.

## Facts

- Endpoint: POST https://agents.daedalusdevelopmentgroup.com/v1/tx-smoke-test
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/ddg-transaction-smoke-test-9a889428
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Iszu7HOnrbzYl-f8QnrFW

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-transaction-smoke-test-9a889428 -d '<json body>'
```

Example prompt: Run a smoke test transaction through the DDG agent payment endpoint — use request label 'agent-test-001' — and confirm the x402 payment rail is working end-to-end.

## When to prefer this

Use this endpoint when you need to verify that an AI agent's x402 payment integration is correctly configured and operational before making more expensive API calls. It is the lowest-cost ($0.01 USDC) way to confirm end-to-end machine-payable flow with DDG services.

## Known failure modes

- Payment not included or malformed x402 header — returns 402 Payment Required
- Insufficient USDC balance — payment rejected
- Invalid client_request_id format — validation error
- Provider environment not configured — service unavailable
- Network timeout during payment settlement

## 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 receipt object echoing back the caller's request_label and client_request_id, confirming that the $0.01 USDC payment was processed successfully via the x402 rail and the end-to-end payment flow is operational.

## 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,
     "payment": {
      "receipt": "x402-...",
      "protocol": "x402"
     },
     "service": "tx_penny_smoke_test"
    }
   },
   "additionalProperties": true
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "payment": {
   "receipt": "x402-...",
   "protocol": "x402"
  },
  "service": "tx_penny_smoke_test"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/ddg-transaction-smoke-test-9a889428/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)