Developers

Sizing answers for apps and AI assistants

Every free Renderior calculator, as a JSON API and a remote MCP server. No key, no sign-up, read-only.

MCP server

Add this address as a remote MCP server (Streamable HTTP) in Claude, ChatGPT, Cursor, VS Code or any MCP client:

https://renderior.com/mcp

For a client that takes a JSON config:

{
  "mcpServers": {
    "renderior": {
      "type": "http",
      "url": "https://renderior.com/mcp"
    }
  }
}

Tools

One tool per calculator, each with the same rules and sources as its page.

JSON API

The same calculators answer plain GET requests. Rooms are in feet and furniture in inches.

GET /api/v1/calculators/chandelier_size
    ?length=14&width=12&ceiling=9

Every answer has a one-line summary, the numbers, and the page with the rule's sources. The list of calculators is at /api/v1/calculators and the OpenAPI description at /api/v1/openapi.json.

What it does not do

  • It does not make pictures. Seeing a product in a photo of a room needs the person's own account at renderior.com (free, 2 a day).
  • It reads no photos and stores nothing about the caller. Answers are rules of thumb, not measurements of a product.

Questions: Email hello@renderior.com.