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 need cloud infrastructure tools inside Claude, Cursor, VS Code, or another MCP client. The project is written in Go.

VERIFIED ACTIVE

LAST COMMIT 2026-08-22 · ★ 2 · #122 OF 141 MAINTAINED CLOUD INFRASTRUCTURE · VERIFIED 2026-08-25

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:0.8.0

Claude Desktop - add to config

{
  "mcpServers": {
    "garlickim21-ratatosk-mcp": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "ghcr.io/garlickim21/ratatosk-mcp:0.8.0"
      ]
    }
  }
}

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

repo age created 2026-07-10 - young repo, little track record yet

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

v0.8.0 · 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.…

v0.7.4 · 2026-08-10

A version whose line does not exist is a dropped prefix, not an empty answer · 0.7.3 stopped comparing across release lines. This is the other half of that change. · Agents do not get versions handed to them - they…

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 #122 of 141 actively-maintained cloud infrastructure servers as of 2026-08-25.
release cadence: 10+ releases in the last 90 days (latest 2026-08-20)
registry: io.github.garlicKim21/ratatosk-mcp (active, first published 2026-07-24 · 18 versions)
packages: oci:ghcr.io/garlickim21/ratatosk-mcp:0.8.0

06 · Ratatosk MCP FAQ

Is Ratatosk MCP still maintained?

Yes - as of 2026-08-25, its last commit was 2026-08-22 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:0.8.0`. 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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