mcp

Interact with the Stitch API using natural language commands.

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What it can do

    What data it sees

    Do you need an account

    No: the server works without sign-in

    Interact with the Stitch API using natural language commands.

    How to connect

    How to connect mcp to Claude

    The server address to paste into Claude settings:

    https://stitch.googleapis.com/mcp

    1. Open Claude (claude.ai or the desktop app).
    2. Go to Settings → Connectors.
    3. Click Add custom connector.
    4. Paste the server address copied below into Remote MCP server URL and click Add.
    5. In a chat, click + → Connectors and switch the new connector on.

    Custom connectors are available on Free, Pro, Max, Team and Enterprise plans (Free is limited to one). On Team and Enterprise an organization Owner adds the connector first under Organization settings → Connectors.

    Authorization

    After you click Add, a sign-in window for the service opens. Sign in with your own account and approve access. Claude never sees your password.

    How to connect mcp to ChatGPT

    The server address to paste into ChatGPT settings:

    https://stitch.googleapis.com/mcp

    1. Open ChatGPT in a browser (chatgpt.com). A Plus, Pro, Business, Enterprise or Edu plan is required.
    2. Turn on developer mode once: Settings → Apps → Advanced settings → Developer mode.
    3. Open Settings → Connectors and click Create.
    4. Fill in the form: Name (anything), Description (one line about what the service does), MCP server URL (copy it below).
    5. Under Authentication choose OAuth if the service requires sign-in, otherwise None. Click Create.
    6. In a new chat open + → Apps/Connectors and enable the connector.

    OpenAI has renamed this section before (Connectors → Apps/Plugins). If the label differs, search settings for "developer mode". On Business/Enterprise workspaces an admin must allow custom connectors first.

    Authorization

    On first use ChatGPT opens the service's sign-in window. Sign in and approve access.

    How to connect mcp to Cursor

    The server address to paste into Cursor settings:

    https://stitch.googleapis.com/mcp

    Fastest: click Open in Cursor below and confirm the prompt.

    Manually:

    1. In Cursor open Settings → Cursor Settings → MCP and click Add new global MCP server.
    2. Paste the JSON copied below into ~/.cursor/mcp.json (per project: .cursor/mcp.json in the repo root).
    3. Save the file. The server appears in the MCP list; authorize it there if asked.

    Authorization

    If the service needs sign-in, an authorize button appears next to the server in the MCP list.

    Server tool list (15)

    Raw names from tools/list. Only developers need these.

    create_projectCreates a new Stitch project. A project is a container for UI designs and frontend code.
    get_projectRetrieves the details of a specific Stitch project using its project name.
    delete_projectDeletes a specific Stitch project using its project name. **Instructions for Tool Call:** * This action cannot be undone. Please confirm with "yes" or "no" to proceed.
    list_projectsLists all Stitch projects accessible to the user. By default, it lists projects owned by the user.
    list_screensLists all screens within a given Stitch project.
    get_screenRetrieves the details of a specific screen within a project.
    generate_screen_from_textGenerates a new screen within a project from a text prompt. **Instructions for Tool Call:** * This action can take a few minutes to complete. Please be patient. DO NOT RETRY. * If the tool fails with a timeout, don't retry. Instead, try to get the screen with `get_screen` method every 30 seconds for up to 10 times before giving up. * If the tool call fails due to connection error, the generation process may still succeed. Please try to get the screen with `get_screen` method later. **Output:** * **`output_components`**: If `output_components` contains text, return it to the user. If `output_components` contains suggestions (e.g. "Yes, make them all"), present these suggestions to the user. If the user accepts one of the suggestions, call `generate_screen_from_text` again with `prompt` set to the accepted suggestion.
    edit_screensEdits existing screens within a project using a text prompt. **Instructions for Tool Call:** * This action can take a few minutes to complete. Please be patient. DO NOT RETRY. * If the tool call fails due to connection error, the process may still succeed.
    generate_variantsGenerates variants of existing screens within a project using a text prompt. **Instructions for Tool Call:** * If the tool fails with a timeout, don't retry. Instead, try to get the screen with `get_screen` method every 30 seconds for up to 10 times before giving up.
    upload_design_mdUploads DESIGN.md to a Stitch project. Use this tool when the user wants to create a design system from a DESIGN.md file. **Instructions for Tool Call:** * Call `create_design_system_from_design_md` tool immediately after this tool to create the design system from the uploaded DESIGN.md, and display the design system in the UI.
    create_design_systemCreates a new design system for a project. Use this tool when the user wants to set or update the overall visual theme, style, or branding of the application. This includes configuring: - Color Palette: Presets, custom primary colors, and saturation levels. - Typography: Font families (e.g., Inter, Roboto, etc.). - Shape: Corner roundness for UI elements. - Appearance: Light and dark mode background colors. - Design MD: Free-form design instructions in markdown. This tool establishes the foundational design tokens that apply across all screens in the project. **Instructions for Tool Call:** * Call `update_design_system` tool immediately after this tool to apply the design system to the project, and display the design system in the UI.
    create_design_system_from_design_mdCreates a design system for a project, with user uploaded DESIGN.md file, and displays the design system in the UI. **Instructions for Tool Call:** * Should call `upload_design_md` tool first to upload DESIGN.md to a Stitch project.
    update_design_systemUpdates a design system for a project. Use this tool when the user wants to change the overall visual theme, style, or branding of the application. This includes configuring: - Color Palette: Presets, custom primary colors, and saturation levels. - Typography: Font families (e.g., Inter, Roboto, etc.). - Shape: Corner roundness for UI elements. - Appearance: Light and dark mode background colors. - Design MD: Free-form design instructions in markdown. This tool establishes the foundational design tokens that apply across all screens in the project.
    list_design_systemsLists all design systems for a given project.
    apply_design_systemApplies a design system to a list of screens. Use this tool when the user wants to update one or more screens to match the style of a design system. This tool applies the selected design system's foundational design tokens (colors, fonts, shapes, etc.) to the chosen screens, modifying their appearance to align with the design system.