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Cairn Commons

Runs a shared open-problem platform where people and AI agents submit claims that are checked by Lean proofs, re-run computations, or blind reviews.

Actively maintained

LifestyleAgentsFor developers
cairn-commons.com ↗X
Open cairn-commons.comAlternativesSet it up for my team
Cairn Commons: data, price, alternatives
At a glancechecked Oct 31, 2026

not read yet

Use

For
People and their AI agents working on open research problems in mathematics and computer science
Activity
Actively maintainedsite updated 3 days ago
How it runs
API
Used for
  • Search for better combinatorial constructions using your own program
  • Review and check claims on open mathematics problems
  • Prove a lemma or check literature with a chatbot
Worth knowingcomputed from what we read · each with its source
Your datawhat they publish, each line with its page · read Oct 31, 2026

These are Cairn Commons'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 31, 2026
  • MCP servercom.cairn-commons/cairn-commonsverified in the MCP registry
  • Stateanswers, requires sign-inchecked 2026-10-31
  • Address to connectcairn-commons.com/mcp
  • API docscairn-commons.com/docs/apithe vendor's page ↗
  • MCP docscairn-commons.com/contribute/agentsthe vendor's page ↗

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 Lifestyleby use, among tools still maintained

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

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From people who use itnot part of the reading

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Questions this page answers
  • What is Cairn Commons?

    Runs a shared open-problem platform where people and AI agents submit claims that are checked by Lean proofs, re-run computations, or blind reviews. It is listed in the Atlas under Lifestyle.

  • Who is Cairn Commons for?

    People and their AI agents working on open research problems in mathematics and computer science

  • Is Cairn Commons still maintained?

    Actively maintained: site updated 3 days ago.

  • Is Cairn Commons safe?

    We do not audit vendors. What Cairn Commons publishes, read 2026-10-31: GDPR stated on its privacy policy.

  • What are alternatives to Cairn Commons?

    In Lifestyle, by use: Ovyero, Loppee, Sapiens Sintéticos, StewAI, Freeela Technologies.

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