Chamber MCP Server

The check your AI agent runs on your notes. When Claude Code or any MCP host answers from your vault, chamber_check confirms the numbers, names and file names it quotes are really in the note it cites - and says so when they are not, or when the note changed since it was indexed. How it works. It runs locally over stdio via the published package.

People who work with citations, knowledge management and local first and want it reachable from Claude, Cursor, VS Code, or another MCP client. The project is written in TypeScript.

VERIFIED ACTIVE

LAST COMMIT 2026-09-29 · ★ 3 · #73 OF 169 MAINTAINED PRODUCTIVITY · VERIFIED 2026-09-30

MIT · TypeScript servers · how we verify → /methodology

01 · Install Chamber

before you install - you'll need

CHAMBER_PYTHON

Environment variables documented in the project's README - it lists which are required and which have defaults.

Claude Code

claude mcp add abm9111-chamber -- npx -y @bu7umaid/chamber

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "abm9111-chamber": {
      "command": "npx",
      "args": [
        "-y",
        "@bu7umaid/chamber"
      ]
    }
  }
}

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

repo age created 2026-08-05 - young repo, little track record yet

license MIT - declared in the repository

npm package @bu7umaid/chamber - the @bu7umaid scope differs from the repo owner (abm9111); confirm it's the project's official package

registry namespace io.github.abm9111 is GitHub-verified and matches the repo owner

03 · What Chamber can do

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

Latest releases

v0.1.8 · 2026-09-28

Fixed · Ingest no longer reads hidden folders or non-notes through links. A · symlink into a dotted folder (notes → .obsidian, y.md → .obsidian/x.md) · was walked and indexed without --include-dotted, and a .md link to…

v0.1.7 · 2026-09-27

Added · chamber_check (MCP): the check your AI agent runs on your notes. An · agent passes its own claims with the notes they came from (absolute paths, · file.md#pN refs or passage ids). Each claim comes back…

v0.1.6 · 2026-09-27

Security · A real citation no longer certifies a claim its passage does not contain. · Before this release a verified pin proved only that the cited passage exists · and is unchanged, so "Kingroon filament is made on…

04 · Who maintains Chamber

chamber is maintained by abm9111. It's the only MCP server we track from this author; the repo dates to Aug 2026.

05 · Facts

repository: github.com/abm9111/chamber
category: productivity - ranked #73 of 169 actively-maintained productivity servers as of 2026-09-30.
release cadence: 9 releases in the last 90 days (latest 2026-09-28)
registry: io.github.abm9111/chamber (active, first published 2026-08-12 · 9 versions)
packages: npm:@bu7umaid/chamber

06 · Chamber FAQ

What is Chamber?

Is Chamber still maintained?

Yes - as of 2026-09-30, its last commit was 2026-09-29 and it shipped 9 releases in the last 90 days. We re-verify nightly.

How do I install Chamber?

Run `npx -y @bu7umaid/chamber`. The README documents one environment variable (CHAMBER_PYTHON) to set first. You can also paste the ready-made client config above.

Does Chamber 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 Chamber

Alternatives to Chamber

Maintained productivity servers if Chamber isn't the fit.

Pairs well with

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

More productivity MCP servers · Airlock · FastMCP server for surgical queries against a vault knowledge graph (NetworkX no · Windows Management · Better Notion · Joplin MCP Server

More TypeScript MCP servers · Sniff · Abstraxn Agent Layer · Neuromcp · Robrain · Quran Search Engine MCP · see all