Observatory MCP Server

Secure the MCP servers you're building. MCP Observatory is the CI-native security tool for teams shipping custom MCP servers. Test during development, catch schema drift, simulate attacks, and generate compliance evidence - before agents depend on your servers. It runs locally over stdio via the published package.

People who work with regression testing, developer tools and schema drift and want it reachable from Claude, Cursor, VS Code, or another MCP client. The project is written in HTML.

VERIFIED ACTIVE

LAST COMMIT 2026-09-15 · ★ 146 · #5 OF 204 MAINTAINED SECURITY · VERIFIED 2026-09-18

MIT · HTML · how we verify → /methodology

01 · Install Observatory

before you install - you'll need

Set MCP_OBSERVATORY_ORG before connecting.

Claude Code

claude mcp add kryptosai-mcp-observatory -- npx -y @kryptosai/mcp-observatory

Claude Desktop / Cursor / VS Code - add to config

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

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 MIT - declared in the repository

npm package @kryptosai/mcp-observatory - published under the repo owner's npm scope (@kryptosai)

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

03 · What Observatory can do

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

Limitations (from the README)

- Servers requiring interactive OAuth (e.g., Google Drive) need pre-authentication before Observatory can connect - Custom WebSocket transports (e.g., BrowserTools MCP) are not supported - A few servers time out or close before init - see known issues and compatibility

Latest releases

v1.45.5 · 2026-09-05

1.45.5 (2026-09-05) · keep informational diagnostics out of the demo fix list

v1.45.4 · 2026-09-05

1.45.4 (2026-09-05) · guide first scan through hosted activation

v1.45.3 · 2026-09-02

1.45.3 (2026-09-02) · render English README on npm

04 · Who maintains Observatory

mcp-observatory is maintained by kryptosai. We track 3 MCP servers from kryptosai - 3 actively maintained, 150 combined GitHub stars, oldest repo from Mar 2026. Full record: all servers from kryptosai.

mcp-seatbelt MCP runtime security proxy. Blocks dangerous AI agent tool calls with a policy engine. ★ 3

05 · Facts

repository: github.com/kryptosai/mcp-observatory
category: security - ranked #5 of 204 actively-maintained security servers as of 2026-09-18.
release cadence: 10+ releases in the last 90 days (latest 2026-09-05)
registry: io.github.KryptosAI/mcp-observatory (active, first published 2026-03-19 · 3 versions)
packages: npm:@kryptosai/mcp-observatory

06 · Observatory FAQ

What is Observatory?

Is Observatory still maintained?

Yes - as of 2026-09-18, its last commit was 2026-09-15 and it shipped 10+ releases in the last 90 days. We re-verify nightly.

How do I install Observatory?

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

Does Observatory 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 Observatory

Alternatives to Observatory

Maintained security servers if Observatory isn't the fit.

Pairs well with

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

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