Which sizes does the quote-card template support?

1080×1080, 1200×630. The default is 1080×1080; pass width and height to pick another supported size.

Which parameters are required?

quote and author. Every other parameter is optional and has a rendering default.

Does rendering the same parameters twice cost twice?

No. The same template version, parameters, brand kit version, format, and size produce the same cache key, so a repeat request is served from cache instead of rendering again. Billing is not connected yet in early access.

Template · quote-card@1

Quote card template

The quote-card template renders a customer quote or testimonial with the author's name, role, and company. Send JSON parameters through the remote MCP server, POST /v1/renders, or a signed /i/quote-card.png URL; the default size is 1080×1080.

Sizes: 1080×1080 · 1200×630
Formats: PNG · JPEG · WebP
Version: 1.0.0

VectorFast Render is in early access. Billing is not connected yet, and API keys are issued to waitlist members as access opens. Join the waitlist

Preview

Rendered by VectorFast Render from this template's English and Chinese example parameters, through the same signed URLs your own pages would use.

Preview images are signed on the server and are not available in this environment.

Ask your agent

Paste the prompt into Claude, Cursor, or another agent connected to the VectorFast Render MCP server. The JSON is the render tool call it should turn into.

Prompt

Turn this testimonial into a square quote card for LinkedIn: "We stopped opening Figma for release images. Claude makes them from our changelog." — Priya Nair, Head of Growth at Northwind.

MCP render call

{
  "name": "render",
  "arguments": {
    "template": "quote-card",
    "params": {
      "quote": "We stopped opening Figma for release images. Claude makes them from our changelog.",
      "author": "Priya Nair",
      "role": "Head of Growth",
      "company": "Northwind"
    },
    "width": 1080,
    "height": 1080
  }
}

Connect Claude to VectorFast Render

Parameters

Read from the schema that POST /v1/renders validates. String values are trimmed; anything over a limit is rejected with invalid_params.

Quote card template parameters
Param	Type	Required	Limit	Notes
quote	string	Yes	≤ 240 chars	The quote without quotation marks; the template draws the opening mark.
author	string	Yes	≤ 60 chars	Who said it.
role	string	No	≤ 60 chars	Job title.
company	string	No	≤ 60 chars	Company name.
avatar_url	image URL	No	—	Image URL. Remote images are not enabled yet (the allowlist is empty), so leave it out; the template draws a fallback.

Render it from code

The REST call needs an API key in Authorization: Bearer. Its response includes a signed url you can store and reuse as an og:image. The Node.js function shows the signing algorithm the server verifies; per-key signing secrets are not issued yet in early access, and the secret must stay on your server.

curl · POST /v1/renders

curl https://vectorfast.ai/v1/renders \
  -H "Authorization: Bearer $VECTORFAST_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "template": "quote-card@1",
  "format": "png",
  "width": 1080,
  "height": 1080,
  "params": {
    "quote": "We stopped opening Figma for release images. Claude makes them from our changelog.",
    "author": "Priya Nair",
    "role": "Head of Growth",
    "company": "Northwind"
  }
}'

Node.js · signed URL (server-side only)

import { createHmac } from 'node:crypto'

// Server-side only. Never ship the signing secret to a browser, a mobile app or a repo.
const SIGNING_SECRET = process.env.VECTORFAST_SIGNING_SECRET

function encode(value) {
  return encodeURIComponent(value).replace(/[!'()*]/g, c => '%' + c.charCodeAt(0).toString(16).toUpperCase())
}

export function signRenderUrl({ template, format = 'png', params, brand, width, height, keyId }, secret = SIGNING_SECRET) {
  const query = {}
  for (const [key, value] of Object.entries(params)) {
    if (value === undefined || value === null)
      continue
    query[key] = typeof value === 'string' ? value : Array.isArray(value) ? JSON.stringify(value) : String(value)
  }
  if (brand) query.brand = brand
  if (keyId) query.k = keyId
  if (width) query.w = String(width)
  if (height) query.h = String(height)

  const canonical = Object.entries(query)
    .map(([key, value]) => [encode(key), encode(value)])
    .sort((a, b) => (a[0] < b[0] ? -1 : a[0] > b[0] ? 1 : a[1] < b[1] ? -1 : a[1] > b[1] ? 1 : 0))
    .map(([key, value]) => key + '=' + value)
    .join('&')
  const path = '/i/' + template + '.' + format
  const sig = createHmac('sha256', secret).update(path + '?' + canonical).digest('base64url')
  return 'https://vectorfast.ai' + path + '?' + (canonical ? canonical + '&' : '') + 'sig=' + sig
}

const url = signRenderUrl({
  template: 'quote-card',
  format: 'png',
  width: 1080,
  height: 1080,
  params: {
    "quote": "Our release images used to take a designer half a day. Now the agent ships them with the changelog.",
    "author": "Priya Nair",
    "role": "Head of Growth",
    "company": "Northwind"
  },
})

How signed URLs work

Quote card template FAQ

Which sizes does the quote-card template support?: 1080×1080, 1200×630. The default is 1080×1080; pass width and height to pick another supported size.
Which parameters are required?: quote and author. Every other parameter is optional and has a rendering default.
Does rendering the same parameters twice cost twice?: No. The same template version, parameters, brand kit version, format, and size produce the same cache key, so a repeat request is served from cache instead of rendering again. Billing is not connected yet in early access.

Updated 2026-10-30 · Markdown version