# DDG Agent-Payable Services Preflight

> DDG Agent-Payable Services Preflight 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).

Accepts a preflight request describing an HTTP call (method, body type, and body) and returns a response indicating whether the agent-payable service request can proceed, as part of the x402 payment protocol flow.

## Facts

- Endpoint: POST https://agents.daedalusdevelopmentgroup.com/v1/402/preflight?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-services-preflight-71843b26
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_TA0yyWLZdExPogkLCjaw5

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-services-preflight-71843b26 -d '<json body>'
```

Example prompt: Run a preflight check on my DDG agent-payable service request — it's a POST with a JSON body containing {"userId": "abc123"} and I expect an ok:true response back.

## When to prefer this

Use this endpoint when you need to validate an HTTP request before committing a micropayment via the x402 protocol on the Daedalus Development Group platform. Prefer this over direct submission when your agent pipeline needs a dry-run gate to confirm request format and authorization before spending USDC. It is especially useful in automated agent workflows where wasted payments on malformed requests must be avoided.

## Known failure modes

- Missing required fields (input.type, input.method, input.bodyType, input.body, output.type, output.example) results in a 400 validation error
- Unsupported HTTP method (anything other than POST, PUT, PATCH) returns an enum validation failure
- Unsupported bodyType (anything other than json, form-data, text) causes a schema rejection
- Payment not processed or x402 header missing may result in a 402 Payment Required response
- Malformed JSON body returns a parse error

## 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 with an 'ok' boolean (true/false) indicating whether the described HTTP request passes preflight validation for the DDG agent-payable service. A successful preflight signals the agent may proceed with the actual paid request.

## 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-services-preflight-71843b26/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)