Mark your path
on LinkedIn.
Cairn finds the conversations that matter to your business and drafts replies in your own voice. Calm software for founders who want to be known for what they actually do — not for posting at 9am.
“Genuinely curious — for early-stage B2B founders, what's the single most useful piece of GTM advice you've actually applied? Looking for signal, not platitudes.”
The thing that moved the needle for us was killing our ICP doc and replacing it with 30 named accounts we could describe in one sentence. The minute we could say “these 30 companies, this exact pain”, the whole funnel got 3x more honest. Happy to share the template if useful.
LinkedIn rewards the loud.
Founders can't afford to be loud.
You don’t want to post every day.
You want to be useful where it matters. Daily posting is a treadmill — and the algorithm rewards volume over voice.
You hate sounding like everyone else.
“Great post 🚀” is invisible. Founders win by saying something only they could say. Most tools push you the other way.
You can’t live in the feed.
The conversations that matter are buried in dozens of subreddits, hashtags, and other people’s comment sections. You need a curator, not another inbox.
Two loops.
One quiet engine.
Cairn runs a Discovery loop continuously in the background and a Reply loop in front of you. You only ever see the conversations worth your attention.
LOOP A · CONTINUOUS
Discovery
- 01
SERP & watchlist
Cairn monitors LinkedIn, Reddit, hashtags, and named accounts on your behalf — every 15 minutes.
- 02
Stage 1 triage
A cheap model (Haiku) scores fit against your ICP and campaign keywords. Cuts 95% of noise.
- 03
Stage 2 deep score
A sharper model (Sonnet) reads context, threads, and the author’s profile. The other 5% earns its place.
- 04
Inbox
Only the highest-fit posts make it to you. Typically 10 to 20 a day. Never more.
LOOP B · ON DEMAND
Reply
- 01
Drafted in your voice
Cairn writes a first draft using your voice profile and seeded context. Sounds like you wrote it tired but sharp.
- 02
You edit (or not)
Most replies need a small tweak. Some go through untouched. Every accepted edit teaches your voice profile.
- 03
Post in one click
Through your connected account, or via the Cairn extension on the LinkedIn page itself.
- 04
Outcome tracked
Reactions, replies, profile views, follows attributed, pipeline value. Authority score updates.
Three minutes,
start to finish.
A founder walks a fresh workspace through Cairn's discovery and reply loops end to end — from pasting their voice to posting their first reply — without saying a word.
Recording in progress
Six things.
Done with care.
An inbox, not a feed
Every high-fit conversation in one calm list. Sorted by score, not recency. Keyboard-first: j/k to move, e to draft, p to post.
- LINKEDIN94
Looking for honest GTM advice — not platitudes
- REDDIT · r/SAAS88
How are you tracking inbound from comment-led growth?
- LINKEDIN81
I quit Taplio after 4 months. Here’s what I learned.
Replies in your voice
Cairn analyses 30 of your past posts at onboarding to build a private voice profile. Drafts use your phrases, your sentence rhythm, your dont's.
The thing that moved the needle for us was killing our ICP doc and replacing it with 30 named accounts we could describe in one sentence.
Trained once. Refined forever.
Each accepted edit teaches Cairn what you actually mean. The voice profile is yours — exportable, versioned, never used to train shared models.
PHRASES YOU USE
YOU’D NEVER
- — rocket emojis
- — “Great post!” opens
- — hustle / grind / crushing it
Outcomes, not vanity
Track reactions, replies, profile views, follows, and pipeline tied to specific replies. The metrics that map to revenue, not the ones that flatter.
REPLIES / 7D
38
+12
FOLLOWS
47
+9
PIPELINE
$24k
+$6k
Templates that respect founders
Founder thought leadership. Product launch. Competitor displacement. Conferences. Hiring. Reddit listening. Each template seeds the right ICP, keywords, and angles.
Your key, 70% off
Bring your own Anthropic API key and pay 70% less per credit. Keys are envelope-encrypted via GCP KMS. We never see them in plaintext.
sk-ant-api03-•••••••••••••••••••••••••••••••••••••••••••••
Six things, one quiet engine.
Free to try. 100 credits on the house. No card.
The opposite of every
“LinkedIn growth” tool you've tried.
We built Cairn after years of being embarrassed by what these tools turned us into. Here's the line, drawn clearly.
Pay for usefulness.
Not for seats.
Every action — discovery, scoring, drafting — costs credits. Bring your own Anthropic key and credits go 70% further. No per-seat traps.
Free
100 credits / mo
Try the loop. No card required.
- 1 LinkedIn account
- 1 campaign
- Voice profile
- Inbox
Content
1,500 credits
For founders who post once a week and reply often.
- 1 LinkedIn account
- 2 campaigns
- Effectiveness dashboard
- Email support
Engagement
4,000 credits
The default for most founders. The full engine.
- 2 accounts
- 5 campaigns
- Audience signals
- Chrome extension
- Priority support
Growth
10,000 credits
For founders running multiple inbound motions.
- 3 accounts
- 10 campaigns
- Reddit auto-pilot
- BYOK enabled
Need more
Running a team, an agency,
or a category?
Multi-workspace, white-label, custom credit packs, dedicated success, SLAs, billing API. We'll build a plan around your motion.
Things founders ask
before they sign up.
Is this against LinkedIn's terms of service?+
No. Cairn never scrapes the LinkedIn site or stores your session cookie. We use the official LinkedIn API for your own feed, and a Chrome extension that you control to surface posts on pages you're already viewing. Posting always happens through your account, with your consent.
How is this different from Taplio or AuthoredUp?+
Taplio is a content factory — it pushes you to post more, in templates, with hooks. Cairn is an engagement engine — it finds the conversations worth your time and helps you reply in your own voice. We will never sell you engagement pods.
Will my replies sound like AI?+
Not if your voice profile is healthy. Cairn analyzes 30 of your past posts at onboarding and refines on every accepted edit. The whole point is that nobody can tell. If a draft sounds like a chatbot, edit it (or reject it) and the model learns.
What does “credits” mean?+
Every meaningful action — scoring a post, drafting a reply, refining a voice profile — costs a small number of credits. A typical Engagement-tier user spends about 80–120 credits per day. Bring your own Anthropic API key and credits go 70% further.
Can I use this for Reddit?+
Yes. Reddit listening is built in from day one. You can run an auto-pilot mode on Reddit that posts approved replies on a schedule — something we deliberately do not allow on LinkedIn, where every post should pass through human eyes.
Who owns my voice profile and data?+
You do. The voice profile is exportable, versioned, and never used to train shared models. Your data is workspace-scoped end to end and we delete it on request within 24 hours.
Do I need to post every day?+
No. Cairn is built for founders who want to be useful, not loud. Most of our users post 1–2 times a week and reply to 5–10 high-fit conversations a day. That's enough to compound.
We're onboarding founders
in small batches.
Drop your email and we'll send you an invite when the next batch opens. No drip sequence. No newsletter. One email when it's your turn.