Agents still cannot draw. We give them a spec that is the image — and a page that is the spec.

A Page is a whole web document from one spec.

This homepage is not one. A SlickFast Page is: headline, words, charts, layout — published to a URL. The button below takes you to a real one. On that address, add .json for the twin (the recipe). The fingerprint at the bottom of the Page must match it. Free Pages last 7 days and show a watermark. Paid Pages stay. The link is unguessable, not private — anyone who has it can open the Page and the twin.

Open the Page. Add .json. Look at the bottom.

Each of these is a real Page. The fingerprint in the chrome must match the twin.

A chart needs no key. A public Page does.

Connect local MCP, then ask. Hosted MCP (claude.ai and cloud agents): paste mcp.slickfast.com — that path is metered like the API.

All 47 types. Every image is engine output.

Nothing below is a mockup — each board is a single SlickFast render: one spec, one call, many charts tiled into one image. Tiles span columns and rows (wide, tall, hero-sized), so a board mixes big charts with small stats. Any shape, too — one ratio field turns the same spec into a share card, a phone-portrait board, an ultra-wide banner, or an A4 print. Click any image to view it full size.

One field changes the whole look: palette

Single charts, straight out of the engine. 6 flat palettes and 12 nested themes are built in — name one in the spec and the chart restyles itself, background to legend.

Retro Editorial — donut

Nordic Earth — stacked area

Cyberpunk Glow — smooth line

Sorbet Pastel — waffle

Whole dashboards — one spec, one call, one image

Portrait board — phone-shaped daily summary

Nested composition — pie-of-pie drill-downs as full-width tiles

Apollo — Mission Control — themed board, real program data

Every type, by family

Single-stat family · Pastel — kpi · gauge · ring · callout · progress · bullet

Comparison family · Vibrant — bar · grouped · stacked · diverging · lollipop

Trend family · Cyberpunk Glow — line · area · slope · difference

Part-to-whole family · Analogous Shift — pie · donut · pie-of-pie · waffle · funnel

Grid & structure family · Clean Corporate — heatmap · matrix · table · calendar · quadrant

Process & planning family · Cyberpunk — gantt · swimlane · steps · timeline · waterfall

Embed once, update forever.

A live chart is a permanent image URL whose numbers update on their own. Create it once, embed it anywhere an image works — README, dashboard, email — then push new data whenever it changes. Every copy, everywhere, updates. SVG median in the public bench is about 15 microseconds; that is the engine clock, not the network.

This image is live. These are our real numbers, right now — npm downloads, CI, commits — refreshed automatically by a 20-line script. Nobody re-uploads this image. Yours can do this.

The whole trick, in three lines:
1 · Create — one call stores your chart and returns its permanent URL.
2 · Push — your script (or your AI agent) sends fresh numbers whenever they change.
3 · Done — every embed of that URL shows the latest data within seconds of a push. Viewers need no key, and views are never metered — unlimited audience on every plan.

The agent is the sensor. Tell an agent "watch our signups and keep the chart current." If an agent can see it, your chart can show it, live.

The Pulse Deck. Every needle moves every 3 seconds — latency probes, Wikipedia's live edit stream, the ISS, markets. One image URL doing all of it.

Dashboards are dynamic tiling. Every board on this page is one JSON spec — a list of tiles, each tile a chart, each chart a span.

A document an agent publishes should be checkable.

Most tools draw a picture and throw the recipe away. SlickFast keeps the recipe. The spec is the chart. A pagespec is a public page. The hash is on the page. The twin is at .json. That is the whole trick — verifiable documents, not a screenshot of a hidden browser.

Simple plans, metered in renders.

A render is one chart, one dashboard, or one Page draw. CDN-cached — one render can serve any number of views.

What counts as a render? Only drawing a new chart or Page. Each unique draw counts once — after that, every view of its URL is served from cache, free and uncounted. A million people can look at the same chart and your meter ticks once. You pay when we draw — not every time someone looks. Change the data and that's a new render; a chart may occasionally re-render (first views from a new region, or after long inactivity) — a few extra ticks, not per-view billing.

Live charts: creating one or pushing new data counts as a render — but views are free and unlimited on every tier. Your audience is never metered. Quotas reset monthly; if you hit yours, creates and pushes pause but your embeds keep serving the last data. Live charts belong to your account — rotate keys freely, your charts follow you.

Unlisted ≠ private. Live charts, Pages, and share URLs use hard-to-guess links — anyone with the link can view them, and Pages expose a .json twin. Don’t host secrets. Details: Privacy.

Need more than 50k renders? Write to feedback@slickfast.com. Want the engine inside your own product? See commercial licensing.

Three doors: local MCP, our MCP server, or the API.

Local renders on your machine via npx — no clone, no build, nothing leaves the machine. Hosted MCP is the same tools over a URL. The API turns a spec into a public image URL.

{
  "mcpServers": {
    "slickfast": {
      "command": "npx",
      "args": ["-y", "@slickfast/mcp"]
    }
  }
}

https://mcp.slickfast.com/mcp

SPEC='{"type":"bar","data":{"labels":["Q1","Q2","Q3"],
       "series":[{"values":[12,19,8]}]}}'

curl "https://api.slickfast.com/chart.png?spec=$(jq -rn --arg s "$SPEC" '$s|@uri')" \
  -H "Authorization: Bearer sf_your_key" \
  --output chart.png

One-click installs

Where does the config go?

• Claude Desktop — Settings → Developer → Edit Config, or edit the file directly: macOS ~/Library/Application Support/Claude/claude_desktop_config.json, Windows %APPDATA%\Claude\claude_desktop_config.json. Restart Claude after saving.
• Cursor — Settings → MCP → Add new server, or drop the same JSON in ~/.cursor/mcp.json.
• Claude Code — one command: claude mcp add slickfast -- npx -y @slickfast/mcp.
• claude.ai — add connector mcp.slickfast.com.

Try this first

Once it's connected:

"Call get_started, then show me the gallery, then render a dashboard with an MRR tile, a funnel, and a heatmap."

Smaller first step: "render a bar chart of last quarter's revenue", or "what's new — call news".

Free and open source.

SlickFast is open source under AGPL-3.0. Using it with your agent is free, the charts you make are yours, and running it in-house is free. Want SlickFast inside a commercial product or service? Simple per-app commercial licenses start at $99/year — no license keys, no hoops.

What's next.

Doors, then the contract.

Start on a Page. Spec details live in the repo.