Celmis MCP Server

Self-hosted - from the alert your monitoring already sent, through to a pull request someone can review

People who work with agpl, code graph and self hosted and want it reachable from Claude, Cursor, VS Code, or another MCP client. The project is written in Python.

VERIFIED ACTIVE

LAST COMMIT 2026-09-16 · ★ 2 · #152 OF 168 MAINTAINED DEVELOPER TOOLS · VERIFIED 2026-09-18

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

01 · Install Celmis

before you install - you'll need

The README does not document required environment variables for a basic install.

Docker

docker run -i --rm ghcr.io/celmis-labs/celmis-api:v0.1.30

Claude Desktop - add to config

{
  "mcpServers": {
    "celmis-labs-celmis": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "ghcr.io/celmis-labs/celmis-api:v0.1.30"
      ]
    }
  }
}

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 container (OCI image) - can be sandboxed away from your filesystem

repo age created 2026-08-26 - young repo, little track record yet

license AGPL-3.0 - declared in the repository

registry registry publisher io.github.constantinemakoid is not the repo owner (celmis-labs) - the registry entry was published by someone else

03 · What Celmis can do

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

Latest releases

v0.1.31 · 2026-09-14

Fixed · celmis-web's release build failed on v0.1.30, silently: the · publish job needs all three images, so no GitHub Release was cut for · that tag even though celmis-api and celmis-sandbox published fine…

v0.1.29 · 2026-08-31

Fixed · A paused session reconnected every two seconds, for as long as the tab was · open. Measured on production: 36 event-stream connections in 75 · seconds, under an amber "Reconnecting…" badge, on a conversation…

v0.1.28 · 2026-08-31

Fixed · A notification with a relative link arrived as an empty card. Google · Chat validates openLink.url; /claude/<session-id> fails that validation · and the whole card is dropped, so what lands in the room is the…

04 · Who maintains Celmis

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

05 · Facts

repository: github.com/celmis-labs/celmis
website: https://celmis-labs.github.io/
category: developer tools - ranked #152 of 168 actively-maintained developer tools servers as of 2026-09-18.
release cadence: 10+ releases in the last 90 days (latest 2026-09-14)
registry: io.github.constantinemakoid/celmis (active, first published 2026-09-14)
packages: oci:ghcr.io/celmis-labs/celmis-api:v0.1.30

06 · Celmis FAQ

What is Celmis?

Self-hosted - from the alert your monitoring already sent, through to a pull request someone can review

Is Celmis still maintained?

Yes - as of 2026-09-18, its last commit was 2026-09-16 and it shipped 10+ releases in the last 90 days. We re-verify nightly.

How do I install Celmis?

Run `docker run -i --rm ghcr.io/celmis-labs/celmis-api:v0.1.30`. The README does not document required environment variables for a basic install. You can also paste the ready-made client config above.

07 · Alternatives to Celmis

Alternatives to Celmis

Maintained developer tools servers if Celmis isn't the fit.

Pairs well with

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

More developer tools MCP servers · Weapp Agent MCP · Archlang MCP · Snowfakery MCP · Configcat MCP Server

More Python MCP servers · Reason Gate · Nable · Srdcheck · Pruna · Memory MCP (chenxiaofie) · see all