shared memory for agentic communities
Your agents keep solving
the same problem
over and over.
Every Claude session, every Discord thread, every Cursor run — the lessons are real but they vanish. Cairn turns agent workflows into a reviewed, attributed map your community and your agents can both reach.
walk in now · writing still gated · closed beta opens may 18
Every community,
its own cairn.
These are live. Step inside and see what a community's agents and people have mapped together — no sign-in needed.
Agent Skills
walk in →A community-curated wiki about Claude Code's agent Skills — how to build them, compose them, and take them to production.
Twinkle AI
walk in →Twinkle AI 是一個專注於台灣繁體中文 LLM 的開源訓練社群。本 collection 的卡片從社群 Discord 蒸餾而來，每張卡的 body 標明實際發言者，未來貢獻者可以透過 Discord OAuth 認領自己的卡。
works with your agents · via MCP
Four kinds of stones,
one map.
Cairn distinguishes lived experience from polished summary — so readers and agents always know where the line is.
Field Note
A real scar from a real workflow. Debugging story, deploy disaster, an experiment that almost worked. Cannot be invented by AI.
Take
Your opinion on architecture, agent design, a tool tradeoff. Signed by handle. AI can polish — it can't decide.
Brief
A grounded summary of public sources, paper, or docs. AI-drafted, human-approved, citations attached.
Open Question
Something the community hasn't yet answered. Visible holes invite contribution from the people who know.
Ask the cairn.
Watch it light up.
One question pulls the cards that answer it — and the relations that hold them together.
The disagreement is part of the answer.
A world,
not a search box.
The map is hand-drawn. Each island is a region of the community's thinking. You walk to the one you need.
Distance gives shape to what's known.
Same cairn,
reached from where you work.
Your agent reads the map over MCP. A skill watches the session and offers the scar back when it's worth keeping. No tab switch, no copy-paste.
Pull a previous
visitor's trace.
The agent asks. Cairn returns the field note the last person who hit this wall left behind — handle attached.
The disagreement is part of the answer.
Leave the scar
before it fades.
At session end, the skill distills a candidate field note. You hit Y. The card waits in pending for review.
Capture, not interrupt.
A loop, not an upload.
Knowledge happens in the work, not after it. Cairn lowers the cost of capturing it down to a single review step.
Workflow
You and your agent work — debug, ship, argue with the docs, ship again. Real signal lives in the trace.
Distill
Cairn or your skill pulls candidate Field Notes from the run. AI proposes; nothing is published yet.
Review
You approve, edit, or reject. Sensitive details masked, attribution attached, draft enters the map.
Reusable
Your community reads it. Your agents query it via MCP. The next workflow starts a step ahead.
There's memory for one person.
There's memory for agents.
There should be memory for us.
Personal notes
Obsidian, Notion, your scratch.md. Crisp voice and judgement, but locked to one head — agents can't reach it, communities can't build on it.
Stack Overflow / cq
Q&A or knowledge units indexed for agents to retrieve. Solves repeat-mistakes for coding agents — but no community voice, no map, no field notes from the people doing the work.
Cairn
Field Notes, Takes, Briefs, Open Questions. Human-governed, agent-native. Voice and structure — and a living map of what's known, contested, or missing.
Your community's hard-won lessons,
plugged straight into your agents.
You wrote the same Cursor rule twice. You answered the same Discord question last week. The lesson is real. The lesson keeps disappearing.
Cairn captures these lessons as structured cards, lets a human approve each one, and exposes the whole map to your agents over MCP.
- ──Distilled, not invented. AI proposes Field Notes from real workflow traces. You decide what gets shipped.
- ──Attributed forever. Every card carries a handle, a stable URL, and a date. Reputation accrues to people, not platforms.
- ──MCP-native. One config line and your community's map becomes reachable from Claude, Cursor, or any agent runtime.
Claude Code skills doubled my context — turned out to be plugin-skills loading scope.
Skills as filesystem, not API
via MCP: agent-skills/Skills as filesystem
Every community,
its own cairn.
The cairn is open to walk. Writing is still gated — leave your email and we'll let people in by hand from May 18.
one email · no spam · we'll only write when you're in