# DDG Landing Page Conversion Diff

> DDG Landing Page Conversion Diff is a paid API for AI agents from agents.daedalusdevelopmentgroup.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-30).

Computes and returns the conversion-impacting differences between two versions of a landing page via a paid POST endpoint.

## Facts

- Endpoint: POST https://agents.daedalusdevelopmentgroup.com/v1/landing-page-conversion-diff?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-30
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/ddg-landing-page-conversion-diff-5f235a2c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_28SBNMswoHCagYdPb-A-9

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-landing-page-conversion-diff-5f235a2c -d '<json body>'
```

Example prompt: Compare these two versions of our landing page and tell me what conversion-impacting differences exist — here's the original body and the updated body, both as JSON.

## When to prefer this

Choose this endpoint when you need a bounded, machine-payable computation of conversion-relevant differences between two landing page states, especially when operating in an autonomous agent context using x402 crypto payment rails. Prefer this over manual CRO audits or generic diff tools when you need a structured, programmatic result for $0.01 USDC per call.

## Known failure modes

- Missing required 'input' or 'output' fields returns a validation error
- Invalid HTTP method (not POST/PUT/PATCH) in input.method causes rejection
- Unsupported bodyType enum value results in schema validation failure
- Payment not completed via x402 results in 402 Payment Required response
- Malformed JSON body causes parse error
- Empty or null body objects may return an error or empty diff result

## 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 indicating success, along with computed differences between the input and output landing page representations that are relevant to conversion rate optimization.

## 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-landing-page-conversion-diff-5f235a2c/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)