API reference

All endpoints live under a single versioned prefix:

https://www.vmotif.com/api/v1

The API is at v1. Changes within v1are additive only — new fields may appear, but existing fields and shapes won't change underneath you. Every response carries an x-request-id header; include it when contacting support.

A machine-readable OpenAPI 3.1 spec is served at https://www.vmotif.com/api/v1/openapi.json — point your codegen or API client at it. A typed TypeScript client generated from that spec lives in @vmotif/sdk.

import { createVmotifClient } from "@vmotif/sdk"

const vmotif = createVmotifClient({ apiKey: process.env.VMOTIF_API_KEY! })
const { data, error } = await vmotif.createGeneration({ type: "image", prompt: "a fox" })

Every request needs a bearer token — an API key you create in Settings → API keys. Keys start with vmk_live_ and are shown once at creation, so store them somewhere safe.

Authorization: Bearer vmk_live_xxxxxxxxxxxx

A missing, malformed, revoked, or unknown key returns a single 401 shape — the API never discloses which keys exist.

Each key carries scopes chosen at creation. A write key can generate and run workflows (and read, since write implies read); a read-only key can list and poll but never spends budget. Calling an endpoint your key isn't scoped for returns 403 insufficient_scope.

Agent clients that support the Model Context Protocol can connect directly to vmotif over Streamable HTTP:

https://vmotif.com/api/mcp

The first connection opens an OAuth consent flow in the browser. After approval, the agent receives a Supabase-issued access token that is audience-bound to https://vmotif.com/api/mcp. The MCP server validates that token on every request.

claude mcp add --transport http vmotif https://vmotif.com/api/mcp

Available MCP tools:

get_usage

Read the signed-in account's plan tier and current generation budget.

list_models

List available generation models, optionally filtered to image or text/code models.

generate_image

Start an image generation job and return a pending generation id.

generate_code

Start a code, markup, SVG, JSON, or screen-HTML generation job.

get_generation

Read generation status, completed output, cost, or failure details.

transform_image

Convert, compress, or trim a stored image (e.g. a generation result) — free, synchronous, returns the stored result URL.

list_workflows

List saved workflow summaries with limit/offset pagination.

run_workflow

Start a headless run of a saved workflow.

get_workflow_run

Read workflow-run progress, per-output results, costs, and failure details.

Supabase OAuth currently issues standard OpenID Connect scopes such as openid, email, and profile. vmotif does not rely on custom OAuth scopes for generation permission; it enforces those checks server-side for each tool call.

Generation is asynchronous. You POST a request, get back a job id immediately, then poll until it completes. This keeps the connection short even when a model takes a while.

curl -X POST https://www.vmotif.com/api/v1/generations \
  -H "Authorization: Bearer vmk_live_xxx" \
  -H "Content-Type: application/json" \
  -d '{
    "type": "image",
    "prompt": "a minimalist mountain logo, single line",
    "model": "google/gemini-3-pro-image",
    "aspectRatio": "1:1"
  }'

The response returns right away with a job id:

{ "id": "0c2f…", "status": "pending" }

Request fields:

type

"image" or "code". Required. Must match the model's category.

prompt

The instruction. Required, up to 50,000 characters.

model

A model id from GET /models. Optional — defaults to a sensible image or code model based on type.

images

Up to 10 input images, each { url, mediaType }. URLs must be https or data:.

textInputs

Up to 10 text inputs, each { content, label?, language? }, fed to the model as context.

aspectRatio

For images: one of 1:1, 16:9, 9:16, 4:3, 3:4, 3:2, 2:3.

targetLanguage

For code: the output language (e.g. tsx, css, json).

screenHtml

For code: render the output as a full HTML screen rather than a snippet. Optional, defaults to false.

Poll the job until status is completed or failed. This endpoint is never cached.

curl https://www.vmotif.com/api/v1/generations/0c2f… \
  -H "Authorization: Bearer vmk_live_xxx"

An image result:

{
  "id": "0c2f…",
  "status": "completed",
  "result": {
    "type": "image",
    "url": "https://…",
    "mediaType": "image/png",
    "aspectRatio": "1:1",
    "costMicros": 39000
  },
  "error": null
}

A code result returns the generated text instead:

{
  "id": "1a9b…",
  "status": "completed",
  "result": {
    "type": "code",
    "code": "export function Button() { … }",
    "structuredOutput": null,
    "costMicros": 4200
  },
  "error": null
}

result is null until the job completes; error holds the failure message when status is failed. A job id that isn't yours, doesn't exist, or wasn't created via the API returns 404— ids can't be probed across accounts.

Once a generation completes, you can post-process the image without another model call: convert it to a different format, compress it to a target file size, or trim uniform edges. Transforms run synchronously — the response carries the stored result — and are free: they never draw on your AI budget.

curl -X POST https://www.vmotif.com/api/v1/images/transforms \
  -H "Authorization: Bearer vmk_live_xxx" \
  -H "Content-Type: application/json" \
  -d '{
    "source": "https://…/workflow-images/…/generation.png",
    "op": "compress",
    "options": { "targetBytes": 200000 }
  }'

The result is stored under your account and returned as a URL:

{
  "url": "https://…/workflow-images/…/result.webp",
  "path": "…/result.webp",
  "width": 1024,
  "height": 1024,
  "bytes": 187342,
  "format": "webp",
  "withinTarget": true,
  "trimmed": null
}

Request fields:

source

A workflow-images storage path or public URL you own — a completed generation's result.url qualifies. Required.

op

"convert", "compress", or "trim". Required.

options.format

Output format: png, jpeg, webp, or avif. Required for convert; compress defaults to webp; ignored by trim.

options.quality

Encoder quality for convert, between 0 (exclusive) and 1. Defaults to 0.9.

options.targetBytes

Target output size for compress (10KB–10MB). The API binary-searches encoder quality; withinTarget: false in the response means even the lowest quality couldn't fit and the smallest encode was stored instead.

options.maxDimension

Bound the longest output edge in pixels, capped at 8192. Never enlarges.

Three read-only endpoints help you build against the API:

• GET /models — the catalog of models usable via /generations, with each model's id, category, provider, modalities, and the prices you're actually billed.
• GET /usage — your AI budget for the current period. Pre-flight with this before generating.
• GET /workflows — summaries of your workflows (id, name, updated_at). Supports ?limit (≤100) and ?offset.

/usage reports budget in microdollars (1_000_000 = $1); a null budget means unlimited:

{
  "tier": "pro",
  "token_budget_micros": 20000000,
  "used_micros": 3450000,
  "remaining_micros": 16550000,
  "resets_at": "2026-06-01T00:00:00Z"
}

Beyond single generations, you can execute an entire saved workflow headlessly. The API resolves the graph, runs each prompt node in dependency order — parallelizing independent nodes — and feeds each node's output into the prompts downstream, the same way the canvas does when you press Run all.

curl -X POST https://www.vmotif.com/api/v1/workflows/7f3a…/runs \
  -H "Authorization: Bearer vmk_live_xxx"

It returns immediately with a run id; the work continues server-side:

{ "id": "b81c…", "status": "pending" }

Poll the run for progress and per-output results:

{
  "id": "b81c…",
  "workflowId": "7f3a…",
  "status": "running",
  "progress": { "total": 3, "completed": 1 },
  "results": [
    {
      "promptNodeId": "node-a",
      "outputNodeId": "out-a",
      "type": "image",
      "status": "completed",
      "url": "https://…",
      "mediaType": "image/png",
      "costMicros": 39000
    }
  ],
  "error": null
}

status moves pending → running → completed or failed. Each entry in results appears as that output settles, so you can stream progress. Per-output status is completed, failed, or skipped; image outputs carry url, while code, screen, and design outputs carry their text in code.

• Supported outputs: image, code, and screen (HTML) and design nodes. Video outputs are reported as skipped in this version.
• Stops on failure: if any output fails, nodes downstream of it are abandoned (they depend on the missing result) and the run is marked failed — earlier results are still returned.
• Time budget: a run executes within a single ~5 minute server window. Very large workflows may exceed it; split them or run nodes individually via /generations.

Only workflows you own are runnable; an unknown or unowned id returns 404. Each generated output draws on the same budget as a single generation.

Every error uses the same envelope, with a stable machine-readable type:

{ "error": { "type": "invalid_request", "message": "…" } }

invalid_request

400 — a body field is missing, malformed, or incompatible.

unauthorized

401 — missing, malformed, revoked, or unknown API key.

insufficient_scope

403 — the key lacks the scope this endpoint needs (e.g. a read-only key calling POST /generations).

rate_limited

429 — too many requests; honor the retry-after header.

insufficient_quota

429 — the billing budget for the period is exhausted.

payment_required

402 — the key bills to a workspace that can't be charged right now (its Team plan lapsed, or the key's owner left the workspace). Fix billing, then retry.

not_found

404 — the resource doesn't exist or isn't yours.

server_error

500 (or 503 when a dependency is briefly unavailable).

Generation calls draw on the same AI budget and generation limits as your plan in the app — the API isn't a separate allowance. Read endpoints have their own, more generous limit. When you hit a limit you get a 429 with a retry-after header (in seconds); back off and retry after that window.

Each key is rate-limited in its own bucket, so a busy key can't exhaust another. You can set an optional per-key limit (requests/minute) when creating a key — handy for sandboxing a shared or third-party integration. It only ever tightens the ceiling, never raises it above your plan's limits.

Workspace billing.By default a key's generations draw on its owner's personal budget. A workspace owner or admin can instead bind a key to a workspace when creating it (Settings → API keys), so its generations draw from that team's shared Team budget. The binding is re-checked on every call: if the workspace's Team plan lapses or the owner leaves the workspace, generation requests return 402 payment_requiredrather than quietly falling back to the owner's personal budget.