Query Markup Documents - On-device hybrid search for markdown files with BM25, vector search, and LLM reranking
Nothing to run from here
Cairn is installed from its publisher's own source and answers where it runs, so this marketplace is not in the path of a single call. There is no address here to send one to, and a panel that pretended otherwise would be showing you an answer we made up. Install it and call it from your own client — the Installation tab has the entry for each one.
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trust score
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calls last 7d
local
runs on your machine
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p95 latency
What it does
Persistent memory for AI agents and humans. Store, search, and discover patterns.
Quickstart
# 1 — add it to Claude Code
claude mcp add --scope user --env 'CAIRN_DB_HOST=${CAIRN_DB_HOST}' --env 'CAIRN_DB_PASS=${CAIRN_DB_PASS}' --transport stdio jasondostal-cairn-mcp '--' docker run -i --rm -e CAIRN_DB_HOST -e CAIRN_DB_PASS ghcr.io/jasondostal/cairn-mcp:0.21.2
It needs CAIRN_DB_HOST, CAIRN_DB_PASS: this reads them from your environment, so export them first.
Cairn costs nothing on mcprush: there is no plan to choose here, no cap to set and nothing mcprush can bill you for.
Publishernot claimed
JAAll 1 server
jasondostal1 server
1 category
Collected from a public index. Nobody has claimed this account, so nothing here was written by its author — claim it if it is yours.
Installation
Where are you running it?
Every route below installs the same thing and ends at the same approval screen. This one runs on your machine: your client starts Cairn as a process under your own user, with your files and your network, so the tool surface below is what it can do to your computer rather than to a server somewhere else. It has not been scanned here, so read the surface, and its source, before you approve it.
Claude Codedeclared by this listing
This is a public server: you run it yourself and this marketplace is not in the path. You need Docker installed and running. Only the required variables are passed into the container. To set an optional one (CAIRN_TRANSPORT, CAIRN_LLM_BACKEND), add -e NAME before the image name and give it a value in the entry’s env: an unset -e would clear the default the image sets. Claude Code registers it in one command; --scope user makes it available in every project. Claude Code reads CAIRN_DB_HOST (PostgreSQL host (pgvector)), CAIRN_DB_PASS (PostgreSQL password) from your environment each time it starts the server, so the value stays out of its config: export them in your shell profile (macOS, Linux), or run setx CAIRN_DB_HOST …, setx CAIRN_DB_PASS … and open a new terminal (Windows). The '--' is in quotes so that PowerShell passes it on.
claude mcp add --scope user --env 'CAIRN_DB_HOST=${CAIRN_DB_HOST}' --env 'CAIRN_DB_PASS=${CAIRN_DB_PASS}' --transport stdio jasondostal-cairn-mcp '--' docker run -i --rm -e CAIRN_DB_HOST -e CAIRN_DB_PASS ghcr.io/jasondostal/cairn-mcp:0.21.2Reconnect, or start a new session, and the tools appear in the model’s tool list.
Free on mcprush, and it runs from its publisher’s own image: this marketplace is not in the path, so there is no key of ours to hold and no card to add.
What it asks of you
It reaches a system of yours, so it needs settings only you can give it: CAIRN_DB_HOST — PostgreSQL host (pgvector); CAIRN_DB_PASS — PostgreSQL password. You set them in your own client’s config, on your machine — this marketplace never holds it.
What it writes
One config entry your client uses to start the process locally. A local server runs with your file system and your network, which is why it is priced without metering.
What you approve
This listing has not published its tool surface here yet, so what a client will ask you to approve is whatever the manifest declares at install time.
Tool surface
What the model actually sees. Descriptions are diffed on every release — see version history.
No tool surface on file
This listing has not published its tool list here yet. Nothing is shown here rather than another listing’s tools, which is what this page used to do.
Free
$0 forever
- Every tool, no call limit
- No card, and mcprush charges nothing for it
- Source published under GPL-3.0
- Runs on your machine — nothing of it reaches our gateway
- Nothing to cap, because mcprush bills nothing
What counts against your monthly calls
| Tool | Unit | Calls used | Out of the allowance |
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Nothing here is billable: mcprush charges nothing to install Cairn or to call it, at any volume.
Call allowance · this installenforced at the gateway
Monthly allowance, in calls
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Alert at 80% · then the tool returns a normal MCP error
Used this month: —
—Grade not published
No rule-by-rule report on file for this release
Two independent axes, because powerful and malicious are different questions. The grade is threat only. The capability level is blast radius, and it is never a penalty on the grade — it is priced as one subtract-only term in the score, where you can see it.
This listing ships as a container image. The scanner reads packages on npm and PyPI and public source; an image is neither, so there is no grade here — not a withheld one, an unmeasured one.
Release history
It installs from a container image rather than from a versioned package, so the command cannot be pinned to a release. The history below is for reading; the current release on file is 0.21.2.
0.21.2
undated
latestNo release note was published with this version.
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no reviews yet
Who can review
One review per account, from a signed-in account that does not publish this listing. Nothing else is asked — you can say what you think before you install it. Publishers can reply once per review, and a review can be edited or deleted by whoever wrote it.
Sign in to write one
Any signed-in account that does not publish Cairn can review it, once — before installing it or after. A review from an account that has installed it is marked as one.
No reviews yet
Nobody has reviewed this listing. The rating on the card is the mean of the reviews written here and nothing else, so there is no rating until somebody writes the first — which takes a signed-in account that does not publish it, and nothing else.