Graphtr

For developers and agents

A design API without a design tool

Render is the REST API underneath everything else. Send a template id and the copy to put in it, or just a prompt, and get image bytes back. It is the same template library and the same renderer Studio uses, so what you generate matches what a person would have made by hand.

Request
POST /api/v1/designsAuthorization: Bearer gt_live_...Content-Type: application/json {  "templateId": "poster-live-music",  "format": "png",  "fill": {    "headline": "Live at the Attic",    "detail": "Friday, 9 PM"  }}

Response

1080 x 1350 PNG

Image bytes in the body, not a job id to poll. Remaining quota comes back in the headers.

X-Quota-Limit: 2000

X-Quota-Used: 41

X-RateLimit-Remaining: 59

How it works

Three steps with Render

  1. 1

    Create a key

    One click in your account. Scoped, revocable, and shown once.

  2. 2

    POST a design

    A template id and slot copy, or a prompt and let the model choose. Ask for SVG or PNG.

  3. 3

    Get image bytes

    The response is the file, not a job id to poll. Quota headers tell you where you stand.

What it does

Inside Render

Templates as an API

GET the library with categories, formats, dimensions and fillable slots. Choose a template programmatically instead of guessing.

Prompt or precision

Send exact slot copy when you know what you want, or a prompt when you would rather the model chose the layout.

Vector or raster

SVG when it needs to stay editable or scale, PNG when it needs to be an image.

Quota in the headers

Every response carries remaining requests and the reset window, so a client never has to guess.

FAQ

Questions about Render

Is there an OpenAPI spec?
Yes, at /api/v1/openapi.json. An API that agents are meant to call needs a machine readable description, not just prose.
How is it priced?
By rendered design, per month, with an allowance on every plan including free. Discovery calls like listing templates do not count against it.
Do you store what I generate?
No. Render returns the bytes and keeps nothing. If you want a design saved to a library, that is Studio.

Your ideas deserve better than a blank page

Open the editor and see for yourself. Nothing to install, nothing to cancel, and your first design is about five minutes away.

Start designing now