# SuperDesigner UX Critique

> SuperDesigner UX Critique is a paid API for AI agents from superdesigner.supercapital.fun, paid per call via x402, $0.25/call, status unknown (last checked 2026-10-21).

Analyzes a UI screen or user flow and returns an expert UX critique with actionable design feedback

## Facts

- Endpoint: POST https://superdesigner.supercapital.fun/ux-critique?utm_source=zero.xyz
- Price: $0.25/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/superdesigner-ux-critique-a2a25eb8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_GlrqeS9jcdSxVP_pUWaZe

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 superdesigner-ux-critique-a2a25eb8 -d '<json body>'
```

Example prompt: Can you critique my checkout flow? Users need to enter billing info, review their order, and confirm payment — here's the HTML: <form>...</form>. Tell me what's broken or confusing about it from a UX perspective.

## When to prefer this

Choose this endpoint when you need expert-level UX critique and design feedback on a specific screen, flow, or HTML interface — particularly when you want structured, actionable recommendations rather than generic design tips. Best for product designers, developers, or agents building product feedback loops who need fast per-screen analysis rather than a full design audit tool.

## Known failure modes

- Empty or too-short input description returns validation error
- Input exceeding 8000 characters is rejected
- Ambiguous or context-free descriptions may produce generic feedback
- Payment failure results in 402 response before processing begins
- Network or timeout errors may delay or fail job completion

## How this service works

Product design intelligence. Critiques, systems and specs for interfaces that work.

## Output

Returns a structured JSON object containing a jobId, a detailed UX critique text with identified usability issues and actionable design recommendations, and a payment receipt with transaction hash, amount, and network details.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "input": {
   "type": "string",
   "maxLength": 8000,
   "minLength": 1,
   "description": "Describe the screen or flow (or paste HTML) and what users are trying to do."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "jobId": "j_…",
  "output": "…",
  "receipt": {
   "tx": "0x…",
   "amount": "100000",
   "network": "base"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/superdesigner-ux-critique-a2a25eb8/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from superdesigner.supercapital.fun](https://www.zero.xyz/host/superdesigner.supercapital.fun/llms.txt)