# RenderKit Forms API

> RenderKit Forms API is a paid API for AI agents from renderkit.live, paid per call via x402, $0.1/call, not verified (last probed 2026-10-22); live alternatives: Zero Forms (free) and WithZero Form Builder via ZeroClick (free).

Agents call it through Zero, which pays per call: no API key and no wallet of your own. New accounts start with $5.

Live alternatives for the same use case:
- [Zero Forms](https://www.zero.xyz/c/forms-withzero-xyz-zero-forms-create-hosted-web-form-5ca42e76) (free)
- [WithZero Form Builder via ZeroClick](https://www.zero.xyz/c/withzero-form-builder-via-zeroclick-61930cf9) (free)

Creates a hosted interactive form from structured field definitions or an AI-generated prompt, returning a shareable URL

## Facts

- Endpoint: POST https://renderkit.live/v1/forms?utm_source=zero.xyz
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-22
- Last successful call: 2026-08-24
- Success rate: 50% of calls made through Zero
- Rating: 1.3 / 5 from 1 review
- Activations on Zero: 2
- Tags: x402
- Canonical page: https://www.zero.xyz/c/renderkit-forms-api-fbfc8090
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_A3uWVF2I0o34TK1XSGKEi

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 renderkit-forms-api-fbfc8090 -d '<json body>'
```

Example prompt: Create a hosted RSVP form called 'Team Offsite 2025' with fields for name, email, dietary restrictions, and whether they're attending — set it to expire in 48 hours and send responses to https://myapp.com/webhook/rsvp.

## When to prefer this

Use this endpoint when you need to quickly generate and host an interactive form or survey without building frontend infrastructure — especially when field definitions can be described in natural language via a prompt, or when you need webhook-based response collection with automatic expiration.

## Known failure modes

- Missing both 'fields' and 'prompt' — API requires at least one field source
- Invalid webhook_url format — responses will not be delivered
- expires_in_hours set to 0 or negative — form may be immediately inaccessible
- Malformed field definitions in the fields array — form generation fails
- Payment not included or insufficient — 402 response requiring 0.1 USDC via x402 protocol

## How this service works

Turn structured data into beautiful hosted pages and interactive forms. An API for AI agents — travel plans, research, surveys, RSVPs, and more.

## Output

A hosted, shareable form URL that collects responses from end users; form fields can be explicitly defined or AI-generated from a prompt; optional webhook receives submissions and form expires after a configurable number of hours.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "title": {
   "type": "string",
   "description": "Form title"
  },
  "fields": {
   "type": "array",
   "description": "Explicit field definitions"
  },
  "prompt": {
   "type": "string",
   "description": "AI prompt to generate fields"
  },
  "description": {
   "type": "string"
  },
  "webhook_url": {
   "type": "string"
  },
  "expires_in_hours": {
   "type": "number"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/renderkit-forms-api-fbfc8090/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from renderkit.live](https://www.zero.xyz/host/renderkit.live/llms.txt)