Grid Proof MCP Server

GridProof your UI - automated spacing & grid QA in the agent loop. GridProof is an MCP server that renders your running frontend with Playwright, measures the computed geometry of every element, checks it against a spacing/token rule set, and hands back a structured fix report - so a coding agent can close the loop itself: generate, audit, fix, re-audit.

People connecting developer tools tools to Claude, Cursor, VS Code, or another MCP client. The project is written in TypeScript.

VERIFIED ACTIVE

LAST COMMIT 2026-08-13 · ★ 2 · #87 OF 139 MAINTAINED DEVELOPER TOOLS · VERIFIED 2026-08-25

MIT · TypeScript servers · how we verify → /methodology

01 · Install Grid Proof

Claude Code

claude mcp add gridproof-gridproof -- npx -y gridproof

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "gridproof-gridproof": {
      "command": "npx",
      "args": [
        "-y",
        "gridproof"
      ]
    }
  }
}

Same JSON for Cursor. For VS Code, rename the top-level key from `mcpServers` to `servers`.

Using another client? Same JSON, different key

Claude Desktop · mcpServers

Cursor · mcpServers

VS Code · servers

Windsurf · mcpServers

Zed · context_servers

Cline · mcpServers

Roo Code · mcpServers

Continue · mcpServers

LibreChat · mcpServers

Gemini CLI · mcpServers

Codex CLI · mcp_servers

Full setup guides: every client.

02 · Evidence

Security posture

What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.

runs as local process (stdio) - runs on your machine with your user's permissions

repo age created 2026-08-13 - young repo, little track record yet

license MIT - declared in the repository

npm package gridproof - unscoped; check the name against the project README before installing

registry namespace io.github.gridproof is GitHub-verified and matches the repo owner

03 · What Grid Proof can do

Prose above is summarized from the project's README and registry record - no invented capabilities.

Latest releases

v0.1.0 · 2026-08-13

Gridproof - spacing & grid QA for AI-generated UIs, in the agent loop. · An MCP server that renders your running frontend with Playwright, measures the computed geometry of every element, and hands back structured fix…

04 · Who maintains Grid Proof

GridProof is maintained by gridproof. It's the only MCP server we track from this author; the repo dates to Aug 2026.

05 · Facts

repository: github.com/gridproof/gridproof
website: https://www.npmjs.com/package/gridproof
category: developer tools - ranked #87 of 139 actively-maintained developer tools servers as of 2026-08-25.
release cadence: 1 release in the last 90 days (latest 2026-08-13)
registry: io.github.gridproof/gridproof (active, first published 2026-08-13 · 2 versions)
packages: npm:gridproof

06 · Grid Proof FAQ

What is Grid Proof?

Is Grid Proof still maintained?

Yes - as of 2026-08-25, its last commit was 2026-08-13 and it shipped 1 release in the last 90 days. We re-verify nightly.

How do I install Grid Proof?

Run `npx -y gridproof`. You can also paste the ready-made client config above.

Does Grid Proof run locally?

Yes - it's a stdio server: it runs on your machine (via npx) with your user's permissions. Your data stays local unless the server itself calls external APIs.

07 · Alternatives to Grid Proof

Alternatives to Grid Proof

Maintained developer tools servers if Grid Proof isn't the fit.

Pairs well with

Servers that cover what Grid Proof doesn't - only shown when the pairing reason fits the companion.

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