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Cairn

Stores decisions and facts from sessions and meetings as reviewed cards that keep their source, and serves them to agents over MCP.

Free plan · From $7.50/moActively maintained

MeetingsOpen source
cairn.ink ↗
Open cairn.inkAlternativesSet it up for my teamIs Cairn yours? Claim the card →
At a glanceswept Oct 25, 2026

not read yet

Use

For
People and teams who want their AI tools to remember decisions along with their sources
Price
Free plan · From $7.50/mopricing page, read Oct 26, 2026Trial & discounts: save 17% yearly
Activity
Actively maintainedrelease 2 days ago · site updated 5 months ago
Company
CogniValley, Inc. · Domain since 2026privacy policy · domain registered
Runs as
Self-hosted
Used for
  • recall a saved decision in a later project
  • check which source a remembered fact came from
  • let agents answer team questions with cited cards
read off cairn.ink on Oct 26, 2026
Worth knowingcomputed from what we read · each with its source
Pricingpricing page, read Oct 26, 2026

Free plan · From $7.50/mo

Trial & discounts save 17% yearly

pricing page

Your datawhat they publish, each line with its page · read Oct 26, 2026

“We don t train any model on your content.”

privacy policy ↗

These are Cairn's own statements, read from its pages. We did not audit them. A line that is missing was not found on the pages we read; it does not mean the practice is absent.

How a program reaches itfound, not claimed · read Oct 26, 2026
  • MCP serverink.cairn/memoryverified in the MCP registry
  • Stateanswers, requires sign-inchecked 2026-10-26
  • Address to connectcairn.ink/api/mcp

MCP server details →

This card as JSON, for your agent →

Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.

Alternatives in Meetingsby use, among tools still maintained

Figure and bar: visits/mo, estimate · year: online since

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Three tools from the Atlas for the job you describe, each with what fits and what does not.

From people who use itnot part of the reading

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Questions this page answers
  • What is Cairn?

    Stores decisions and facts from sessions and meetings as reviewed cards that keep their source, and serves them to agents over MCP. It is listed in the Atlas under Meetings and made by CogniValley, Inc.

  • Who is Cairn for?

    People and teams who want their AI tools to remember decisions along with their sources

  • How much does Cairn cost?

    Cairn has a free plan; paid plans start at $7.50/mo, per its pricing page on 2026-10-26.

  • Is Cairn free?

    Yes, Cairn has a free plan, per its pricing page on 2026-10-26.

  • Do people use Cairn?

    Little sign of use.

  • Is Cairn still maintained?

    Actively maintained: release 2 days ago · site updated 5 months ago.

  • Who owns Cairn?

    Cairn is run by CogniValley, Inc., per its privacy policy (2026-10-26).

  • Does Cairn train AI on your data?

    Yes, per its privacy policy (2026-10-26): “We don t train any model on your content.”

  • Is Cairn safe?

    We do not audit vendors. What Cairn publishes, read 2026-10-26: on training with your data, “We don t train any model on your content.”.

  • What are alternatives to Cairn?

    In Meetings, by use: Vexa, Ariso, Ask My Envoy, liveprompt.ai, CoAgentor, LokalBot.

How we read a tool

No votes, no reviews, no vendor claims. Every week a crawler reads each tool's own site and a few public registries, and the words on the card are bands over what it read.

  • Use: visits to the site (estimated), installs from npm and PyPI, presence in Chrome's usage report.
  • Activity: the newest release on GitHub, npm or PyPI; the newest dated page on the site; open roles on a public jobs board.
  • Price: the vendor's own pricing page, read with the date. A figure is printed only when it is on that page.
  • The line and the use cases are written by us from the homepage, one tool at a time, and refused when they repeat the vendor's marketing.

How AI assistants read each site — the reading vendors ask us about — is on each tool's own visibility page.

How we read every tool → · By INITE Atlas Desk