SVG Lab

SVG Lab MCP

Add to Claude opens Claude's Add custom connector dialog with SVG Lab already filled in; press Add, then Connect. The Cursor and VS Code buttons open SVG Lab's install step for that app, which hands over to the app (GitHub cannot link to an app directly).

Listed on Smithery and Glama. Facts, offer and setup: https://svglab.app/mcp-server

SVG Lab MCP lets your AI design inside SVG Lab (svglab.app), and you watch it live. Connect Claude, ChatGPT, Codex, Cursor or any other MCP client and ask for app screens, icons, illustrations or charts: your AI designs them in your SVG Lab project with SVG Lab's Design Engine (layout, spacing, type, colour and drawing, checked before anything is finished). claude.ai, ChatGPT and Codex show a live card in the chat with the screen being drawn; in any app the AI can open the project in the SVG Lab editor so you watch the work on SVG Lab's canvas. The finished designs are saved to your SVG Lab projects as clean SVG, ready to export as SVG, PNG or PDF.

The AI brings the idea (content, palette, direction); SVG Lab guarantees the structure (spacing, alignment, sizing, type, valid vector geometry). It runs on SVG Lab's servers, so there is nothing to install and no browser tab needs to stay open.

https://svglab.app/mcp

Streamable HTTP, OAuth sign-in, no key needed.

This repository holds documentation, ready-made client configs and an agent skill. It contains no server code. The full, always current setup guide is at svglab.app/mcp-setup.

Contents

• For AI agents
• Before you start
• Quick setup: Claude · Claude Code · ChatGPT · Codex · Cursor · VS Code · OpenCode · Windsurf · Gemini CLI · Any MCP client
• Check it works
• Examples
• Access
• FAQ
• Links
• Files in this repository

For AI agents

You are probably setting this up for a user. Facts:

name:              svglab

server_url: https://svglab.app/mcp transport: streamable HTTP (remote). Not SSE, not stdio. Nothing to install. auth: OAuth 2.1, authorization code with PKCE (S256), dynamic client registration resource_metadata: https://svglab.app/.well-known/oauth-protected-resource/mcp auth_server_meta: https://svglab.app/.well-known/oauth-authorization-server registration: https://svglab.app/oauth/register scope: mcp client_id: not needed; leave client ID and client secret empty no_credentials: POST /mcp answers 401 with a WWW-Authenticate header pointing at resource_metadata key_alternative: header "Authorization: Bearer svl_KEY" (the user creates the key at svglab.app: account menu, SVG Lab MCP, Generate key). Never invent a key. access: every account gets 100 free credits (up to 24 app screens) once to try it, no form; then a plan (Starter, Plus, Max, Ultra or Team) or a top-up: https://svglab.app/billing cost: credits: 1 a tool call, 2 a reference image search, failed calls free; 100 free credits (up to 24 app screens) once per account, then monthly plan credits or top-up credits (never expire) usage: https://svglab.app/usage (the signed in account's credits and its calls by tool, project and day) browser_tab: not needed; the server runs the Design Engine and saves to the user's My Projects first_call: can take 10 to 30 seconds while the Design Engine starts sessions: up to 2 AI sessions per SVG Lab account at once, each in its own artboard group one_click_claude: https://claude.ai/customize/connectors?modal=add-custom-connector&connectorName=SVG%20Lab&connectorUrl=https%3A%2F%2Fsvglab.app%2Fmcp (opens Add custom connector with SVG Lab filled in; the user presses Add, then Connect) one_click_cursor: cursor://anysphere.cursor-deeplink/mcp/install?name=svglab&config=eyJ1cmwiOiJodHRwczovL3N2Z2xhYi5hcHAvbWNwIn0= one_click_vscode: vscode:mcp/install?%7B%22name%22%3A%22svglab%22%2C%22type%22%3A%22http%22%2C%22url%22%3A%22https%3A%2F%2Fsvglab.app%2Fmcp%22%7D app_steps: https://svglab.app/mcp-server?app=NAME opens one app's steps; NAME is claude, chatgpt, codex, claude-code, cursor or vscode. Every app: https://svglab.app/mcp-server#connect registry_name: app.svglab/svglab setup_markdown: https://svglab.app/mcp-setup (send the header Accept: text/markdown) agent_skill: skills/svglab-mcp/SKILL.md in this repository (npx skills add ottoman9/svglab-mcp)

Procedure:

1. Find the app. Work out which app the user is in (Claude Code, OpenCode, Codex, Cursor, VS Code, Gemini CLI, Windsurf, Claude, ChatGPT). If you cannot tell, ask once. If the user is not sure their account has access, ask them to open https://svglab.app/billing while signed in: it shows the current plan and the credits left (plan, free and top-up). Every account gets 100 free credits (up to 24 app screens); after that the SVG Lab MCP needs a plan (Starter, Plus, Max, Ultra or Team) or a top-up.
2. Add the server. Use that app's block below exactly as written, with the name svglab. Prefer the user level config (every project) unless the user asks for one project. When editing a config file, merge the entry into the existing file and keep every other server and setting. Never put a key in a project file that could be committed to git; use the environment variable form.
3. Start the sign-in. Run the app's sign-in step (for example opencode mcp auth svglab, or /mcp in Claude Code). It opens the browser and waits until the user signs in to SVG Lab and presses Approve, so either run it and wait, or ask the user to run it in their own terminal. You cannot approve for them; tell them what to expect.
4. Reload. Restart the app or start a new session so it loads the SVG Lab tools. If you are running inside the app you are configuring, a restart ends your own session: finish the steps above first, then ask the user to restart and paste the test prompt from Check it works into a new session.
5. Verify. In the new session, check your own tool list for tools from svglab. With access there are dozens of design tools. If there is only one tool, an account status tool, the connection works but the account cannot design yet (its 100 free credits are used up and it has no plan credits and no top-up credits, the account is suspended, or a key was replaced): call it and pass its message to the user. With sign-in, an account without access usually stops earlier: the SVG Lab sign-in page says the free credits are used up; the user can still approve, and the account status tool then says how to get credits.
6. Test. Run the test prompt from Check it works and give the user the project link it returns. The first design step can take 10 to 30 seconds; that is not a failure.
7. If access is not granted, tell the user: "SVG Lab is set up, but your SVG Lab account has no SVG Lab credits left: its 100 free credits are used up. Choose a plan, or buy a top-up, at https://svglab.app/billing with the same account, and then it works with no more setup."

Before you start

1. An SVG Lab account. Sign in at https://svglab.app/ with Google or an email link.
2. Nothing to buy to try it: every account gets 100 free credits (up to 24 app screens) once, with no form (a tool call costs 1 credit). After that, choose a plan (Starter, Plus, Max, Ultra or Team) or buy a top-up at https://svglab.app/billing : $10 for 5,000 credits (up to 1,200 app screens), $25 for 10,000 credits (up to 2,400 app screens) or $50 for 25,000 credits (up to 6,100 app screens). Top-up credits never expire; all purchases are final.

Sign in with the same account every time: when the AI app opens the SVG Lab sign-in page, use the same account, so its free credits, plan or top-ups apply. Designs are saved to that account's My Projects.

Every app signs in the same way: add the address, the app opens a "Sign in to SVG Lab" page, sign in, check which app is asking, press Approve.

Quick setup

Short versions below. Ready config files are in configs/. The full guide, with key-based setups and troubleshooting, is at https://svglab.app/mcp-setup .

Claude (claude.ai and Claude Desktop)

Custom connectors are available on the Free, Pro, Max, Team and Enterprise plans; a Free account can add one custom connector.

1. One click: open Add SVG Lab to Claude. Claude opens Add custom connector with the name SVG Lab and the URL https://svglab.app/mcp already filled in. Check them and leave Advanced settings (OAuth Client ID and Secret) empty.
2. Press Add, then Connect next to SVG Lab. Sign in to SVG Lab and press Approve.
3. In a chat, press + at the lower left, open Connectors and make sure SVG Lab is switched on.

By hand instead: in Claude, open Customize, then Connectors (on the web: https://claude.ai/customize/connectors), press +, then Add custom connector. Name it SVG Lab, paste https://svglab.app/mcp as the remote MCP server URL, and continue from step 2.

Team or Enterprise: an owner adds the connector once under Organization settings, then Connectors; each person presses Connect and signs in with their own SVG Lab account.

Claude Code

claude mcp add --transport http --scope user svglab https://svglab.app/mcp

--scope user makes SVG Lab available in every project. Leave it out to add it to the current project only. Then start Claude Code, type /mcp, choose svglab and pick Authenticate. The browser opens the SVG Lab sign-in page; press Approve. /mcp should show svglab as connected.

ChatGPT

Install the SVG Lab plugin in one click, no developer mode:

1. Open the SVG Lab plugin and press +, or in ChatGPT open Plugins, search SVG Lab and press +.
2. Sign in to SVG Lab when asked and press Approve.
3. Ask for a design in any chat.

Codex

Codex installs the same SVG Lab plugin:

1. In the Codex app, open Plugins, search SVG Lab and press +. In the Codex CLI, type /plugins.
2. Sign in to SVG Lab when asked and press Approve.
3. Start a new Codex thread so it loads the SVG Lab tools.

The Codex IDE extension has no plugins. There, add the server by hand (the app, the IDE extension and the CLI share ~/.codex/config.toml):

codex mcp add svglab --url https://svglab.app/mcp

Or add to ~/.codex/config.toml by hand:

[mcp_servers.svglab]

url = "https://svglab.app/mcp" `