# DDG Buyer Agent Smoke Probe

> DDG Buyer Agent Smoke Probe is a paid API for AI agents from agents.daedalusdevelopmentgroup.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).

A minimal $0.01 USDC smoke-probe endpoint that validates machine-to-machine x402 payment rail connectivity for AI agent buyers on the DDG platform

## Facts

- Endpoint: POST https://agents.daedalusdevelopmentgroup.com/v1/buyer-agent-smoke-probe
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/ddg-buyer-agent-smoke-probe-5edb0be8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_s4mc1w2SYwehCWflWS7TM

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-buyer-agent-smoke-probe-5edb0be8 -d '<json body>'
```

Example prompt: Run a smoke probe against the DDG agent-payable service to confirm my x402 USDC payment rail is working — send a POST with a JSON body and verify I get an ok response back.

## When to prefer this

Use this endpoint specifically when you need to verify that an AI agent's x402 USDC payment infrastructure is correctly configured and functional before invoking more expensive DDG services. Prefer this over other DDG endpoints when the goal is purely connectivity and payment rail validation, not obtaining a real artifact or result. It is the lowest-cost integration test available on the DDG platform.

## Known failure modes

- Payment rejected if insufficient USDC balance in agent wallet
- x402 payment header missing or malformed causes 402 response with payment requirements
- Invalid body type (not json/form-data/text) causes schema validation error
- Wrong HTTP method (not POST/PUT/PATCH) rejected
- Network timeout if payment settlement takes too long
- Payment rail unavailable if blockchain RPC is degraded

## 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 simple JSON object with a boolean `ok: true` field confirming the payment was accepted and the endpoint is reachable. No data payload beyond the success acknowledgment.

## 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-buyer-agent-smoke-probe-5edb0be8/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)