Ratatosk MCP

Ratatosk reads CNCF release notes every hour. Your agents get the changes. English · 한국어 · 日本語. Its 10 documented tools cluster into read & search, check, changes, family.

People who work with cloud native, cncf and devops and want it reachable from Claude, Cursor, VS Code, or another MCP client. The project is written in Go.

VERIFIED ACTIVE

LAST COMMIT 2026-09-04 · ★ 2 · #137 OF 153 MAINTAINED CLOUD INFRASTRUCTURE · VERIFIED 2026-09-18

Apache-2.0 · Go servers · how we verify → /methodology

01 · Install Ratatosk MCP

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/garlickim21/ratatosk-mcp:0.9.0

Claude Desktop - add to config

{
  "mcpServers": {
    "garlickim21-ratatosk-mcp": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "ghcr.io/garlickim21/ratatosk-mcp:0.9.0"
      ]
    }
  }
}

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

license Apache-2.0 - declared in the repository

registry namespace io.github.garlicKim21 is GitHub-verified and matches the repo owner

03 · What Ratatosk MCP can do

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

What you can build

An agent gets 10 documented tools across read & search, check, changes, including check_stack, list_changes, changes_by_entity, get_matter.

Capability map

Tools grouped from the project's README - what Ratatosk MCP lets an agent do.

read & search

5 tools - e.g. The incremental change feed, oldest-analyzed first. Filter by project, family, or bucket; page with the since cursor to keep a local copy in sync; Every release in which one matter appeared. The same…

list_changes · get_matter · get_release · list_releases · list_projects

Check

1 tool - e.g. Takes the component versions you run and returns the changes on your upgrade path, split by bucket: action_required applies to everyone, check_config only if it

check_stack

Changes

1 tool - e.g. Reverse lookup: every change touching one exact identifier - such as a CVE id, CRD, feature gate, flag, config field, or dependency

changes_by_entity

Family

1 tool - e.g. security, breaking, or deprecated: what kind of thing it is.

family

Bucket

1 tool - e.g. action (applies to everyone), check (only if applies_if

bucket

Applies

1 tool - e.g. a boolean expression you can evaluate against your own

applies_if

Latest releases

v0.9.0 · 2026-09-04

Changed · The agent prompt now says what a tool answer costs, not just whether it is · useful. A measured run pulled 1.4M characters from one cluster-wide pod · listing in json - larger than the model's whole context…

v0.8.0 · 2026-08-20

Hosted usage now counts - one bit upstream, no record of anyone · The hosted endpoint reaches its upstream over an internal network, so upstream metrics could not tell a hosted user's call from the operator's own…

v0.7.5 · 2026-08-16

Hardening pass over the HTTP surface · A security review of the server turned up four ways an install could be worn down over time - none of them a data exposure, all of them about staying up. This release closes them.…

04 · Who maintains Ratatosk MCP

ratatosk-mcp is maintained by garlickim21. It's the only MCP server we track from this author; the repo dates to Jul 2026.

05 · Facts

repository: github.com/garlickim21/ratatosk-mcp
website: https://ratatosk.io/
category: cloud infrastructure - ranked #137 of 153 actively-maintained cloud infrastructure servers as of 2026-09-18.
release cadence: 10+ releases in the last 90 days (latest 2026-09-04)
registry: io.github.garlicKim21/ratatosk-mcp (active, first published 2026-07-24 · 19 versions)
packages: oci:ghcr.io/garlickim21/ratatosk-mcp:0.9.0

06 · Ratatosk MCP FAQ

Is Ratatosk MCP still maintained?

Yes - as of 2026-09-18, its last commit was 2026-09-04 and it shipped 10+ releases in the last 90 days. We re-verify nightly.

What can Ratatosk MCP do?

An agent gets 10 documented tools across read & search, check, changes, including check_stack, list_changes, changes_by_entity, get_matter.

How do I install Ratatosk MCP?

Run `docker run -i --rm ghcr.io/garlickim21/ratatosk-mcp:0.9.0`. 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 Ratatosk MCP

Alternatives to Ratatosk MCP

Maintained cloud infrastructure servers if Ratatosk MCP isn't the fit.

Pairs well with

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

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