VectorFast Render docs
Documentation for VectorFast Render, the brand-asset rendering API for AI agents and code. Templates plus JSON parameters become PNG, JPEG, or WebP through MCP, REST, or signed URLs.
Short answer: VectorFast Render turns an official template, JSON parameters, and your brand kit into a PNG, JPEG, or WebP image. Agents call it through a remote MCP server; code calls POST /v1/renders or embeds a signed /i/{template}.{format} URL. The same inputs always produce the same pixels, and repeat requests are served from cache.
Early access
VectorFast Render is in early access. Billing is not connected yet (credits_charged is always 0), API keys are issued to waitlist members as access opens, and OAuth sign-in for agents is planned. Join the waitlist.
How it fits together
| Piece | What it is | Read |
|---|---|---|
| Templates | Eight official JSX + Tailwind templates with typed parameters and fixed sizes | Templates |
| Brand kit | Versioned colors, fonts, and logo every render uses | Brand kits and logos |
| REST API | https://vectorfast.ai/v1/*, API key auth, OpenAPI 3.1 | REST API reference |
| Signed URLs | GET /i/{template}.{format}?…&sig= for og:image and <img> tags | Signed URLs |
| MCP server | https://vectorfast.ai/mcp for Claude, Cursor, and other MCP clients | MCP |
| Cache | Edge cache plus R2, keyed by template version, params, and brand kit version | Caching and versions |
Start here
- Quickstart: create an API key, render once, reuse the signed URL.
- Authentication: key format, revocation, and rate limits.
- Errors and Limits and quotas when something is rejected.
Every page in these docs has a Markdown version at the same URL plus .md, for example /render/docs/quickstart.md. The site-wide index for AI tools is /llms.txt.
What it is not
VectorFast Render is not a visual editor, an AI image generator, or a video renderer. Output is deterministic: templates are code, and the only inputs are the parameters you send and the brand kit version you pin.
Updated 2026-10-30 · Markdown version