# StableDesign Comment Create

> StableDesign Comment Create is a paid API for AI agents from stabledesign.vercel.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-11).

Creates a comment on a Canva design via the StableDesign pay-per-call API using x402 micropayments

## Facts

- Endpoint: POST https://stabledesign.vercel.app/api/comments/create?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/stabledesign-comment-create-ba27ec62
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_PCuvA1p2a-2Rj_5zpPd3s

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 stabledesign-comment-create-ba27ec62 -d '<json body>'
```

Example prompt: Add a comment to my Canva design (ID: abc123) saying 'Please adjust the font size on the headline to 36pt' — use StableDesign's micropayment API to post it.

## When to prefer this

Use this endpoint when you need to programmatically post comments on Canva designs as part of an automated design review or feedback workflow, especially when paying per-call via x402 USDC micropayments is acceptable or preferred over subscription-based Canva API access.

## Known failure modes

- Invalid or missing design ID returns 400 or 404
- Authentication or payment failure via x402 micropayment returns 402 Payment Required
- Malformed comment body returns 422 Unprocessable Entity
- Canva API rate limit exceeded returns 429
- Design not found or access denied returns 403

## How this service works

Pay-per-call Canva design API via MPP micropayments. Create, list, export designs and upload assets.

## Output

Returns a newly created comment object including a comment ID, the comment text, author details, creation timestamp, and the design it was posted to.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "message": {
   "type": "string",
   "minLength": 1
  },
  "design_id": {
   "type": "string",
   "minLength": 1
  },
  "assignee_id": {
   "type": "string"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/stabledesign-comment-create-ba27ec62/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from stabledesign.vercel.app](https://www.zero.xyz/host/stabledesign.vercel.app/llms.txt)