Constellation MCP Server

Give your AI coding assistant instant, intelligent access to your entire codebase's structure, dependencies, and relationships without transmitting any source code. Constellation provides code intelligence as a service to AI coding assistant tools. It runs locally over stdio via the published package.

People who work with agentic ai, code and engineering and want it reachable from Claude, Cursor, VS Code, or another MCP client. The project is written in TypeScript.

VERIFIED ACTIVE

LAST COMMIT 2026-09-14 · ★ 3 · #61 OF 229 MAINTAINED CODING AGENT · VERIFIED 2026-09-18

AGPL-3.0 · TypeScript servers · how we verify → /methodology

01 · Install Constellation

before you install - you'll need

Set CONSTELLATION_ACCESS_KEY before connecting.

Claude Code

claude mcp add shiftinbits-constellation-mcp -- npx -y @constellationdev/mcp

Claude Desktop / Cursor / VS Code - add to config

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

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

license AGPL-3.0 - declared in the repository

npm package @constellationdev/mcp - the @constellationdev scope differs from the repo owner (shiftinbits); confirm it's the project's official package

registry vendor namespace com.shiftinbits - domain-verified with the official MCP registry

03 · What Constellation can do

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

Latest releases

v1.2.10 · 2026-09-14

What's new? · Maintenance · More reliable releases: Hardened the release pipeline so new versions register with the MCP registry consistently, fixing a transient failure that could occur immediately after publishing.

v1.2.9 · 2026-09-14

What's new? · Security · Patched dependency vulnerabilities: Updated bundled dependencies (hono, qs) to their fixed releases, resolving all reported advisories so the published package installs with zero known…

v1.2.8 · 2026-08-27

What's new? · Security · Patched dependency vulnerabilities: Updated the fast-uri dependency override to address CVE-2026-75975, CVE-2026-75931, CVE-2026-76172, and CVE-2026-75899.

04 · Who maintains Constellation

constellation is maintained by shiftinbits. It's the only MCP server we track from this author; the repo dates to Sep 2025.

05 · Facts

repository: github.com/shiftinbits/constellation-mcp
category: coding agent - ranked #61 of 229 actively-maintained coding agent servers as of 2026-09-18.
release cadence: 6 releases in the last 90 days (latest 2026-09-14)
registry: com.shiftinbits/constellation (active, first published 2026-03-27 · 17 versions)
packages: npm:@constellationdev/mcp

06 · Constellation FAQ

What is Constellation?

Is Constellation still maintained?

Yes - as of 2026-09-18, its last commit was 2026-09-14 and it shipped 6 releases in the last 90 days. We re-verify nightly.

How do I install Constellation?

Run `npx -y @constellationdev/mcp`. The README documents one environment variable (CONSTELLATION_ACCESS_KEY) to set first. Set CONSTELLATION_ACCESS_KEY before connecting. You can also paste the ready-made client config above.

Does Constellation 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 Constellation

Alternatives to Constellation

Maintained coding agent servers if Constellation isn't the fit.

Pairs well with

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

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