Your AI marketing agent for Reddit, HN, and X.
It finds potential customers. It drafts the reply.

Surfio monitors Reddit, Hacker News, and X around the clock for people describing the exact problem your product solves. It scores every post, filters out the noise, and drafts a reply in your voice for the ones worth engaging with. You review, edit, and post. 15 minutes a day.

Start 14-day free trialSee a real draft

Surfio reads thousands of posts.
Picks the ones that match your product.
And drafts a reply you can post in one click.

Every post on Reddit, Hacker News, and X gets scored 0–100 against your product. The 95% that don't fit get filtered out. The rest arrive in your inbox with a reply already written. Here's what that looks like:

1
Surfio scores every post against your product.
r/SaaS•2m ago
“Looking for a tool to track community mentions of our product”
89
Scoring rationale
High intent: actively shopping, B2B SaaS founder, exact use case
Above threshold → draft being generated

10–20 posts cross your threshold each week · 0 hours spent reading feeds

2
For the ones that match, Surfio drafts a reply you can review and ship.
Surfio found this thread
Reddit · r/SaaS · 2 min ago
91 · high intent
matched:
ICP fitintent verbsproblem matchzero top-level replies
247
S
r/SaaS·Posted byu/bootstrap_tired·2 hours ago

Struggling to identify which user feedback actually indicates buying intent

We get dozens of support tickets, NPS responses, and user interviews every week. Most are vague complaints or feature requests with no real signal behind them.

How do you actually separate genuine buying intent from noise? Looking for a framework, not a tool pitch.

Agent's draft · written in your voice
214 words · tone: honest founder
Hey — we spent months on this exact wall before building Plume, and the honest answer is that written feedback is the wrong signal to look at. People soften their opinions in writing. They say "it would be nice if..." when they mean "I'm about to churn," and "I'm considering alternatives" when they've already signed with a competitor. The real intent lives in the calls — sales calls, user interviews, support escalations. Specifically, in the verbs. What worked for us: record every customer conversation and pull out the phrases that only buyers use. "I'm evaluating." "We currently pay for." "My CFO asked about." "Our renewal is in March." Those phrases don't show up in Typeform responses. They show up when someone's talking out loud to a human. Plume automates the recording and phrase extraction, but honestly — if you just transcribe your next 20 user interviews by hand and highlight the intent verbs, you'll see the pattern in a week. The tool is a time-saver, not the insight.
Read every draftEdit anythingShip only what you approve

Your time commitment:
15 minutes a day.

Set up once. Surfio watches around the clock. You open the inbox each morning, review the drafted replies, post the ones worth posting, and close the tab.

Day 1, 2 min

Set it up once

Describe your product, who it's for, and write a one-line pitch. Pick the subreddits and HN queries you care about. That's the whole setup — Surfio uses your product context to score and draft everything from here.

Every 5 min, 0 effort

Surfio reads everything

It polls Reddit, Hacker News, and X around the clock, scores every post 0–100 against your product, and drops anything that doesn't fit. You do nothing. The feeds read themselves.

Daily, 15 min

Ship the day's replies

Open the inbox. Ten to twenty drafted replies waiting, sorted by score. Read the original post, review the draft, edit a sentence if you want, copy it to the thread, and mark it posted.

Why Surfio exists
A note from the maker

Every bootstrapped founder eventually runs into the same problem: the first channel that actually works is replying to real conversations on Reddit, Hacker News, and X. And then, almost immediately, the second problem — doing that well takes more hours than any single person has.

I spent too many Sundays reading r/SaaS, r/startups, and Hacker News by hand. The work wasn't hard. It was just impossible to do at volume. Most threads weren't a fit, and by the time I'd waded through enough feed to find one that was, the moment had passed.

Surfio is the tool I wished existed. It reads feeds around the clock, scores every post against your product and ICP, and surfaces the ten or twenty a week that are actually worth your time. Then it drafts a reply you can ship in three minutes instead of thirty.

It's not trying to replace human engagement. The reply still comes from you. It's trying to make community-led growth sustainable for founders who don't have ten hours a week to give it.

Simple pricing.

14-day free trial. No credit card. Cancel anytime.

Starter

1 project · 3 sources

$29/month
  • 1 project
  • 3 sources (subreddits or HN queries)
  • Find & reply on Reddit + HN
  • ~100 drafts / month
Try Starter free
Recommended

Growth

3 projects · 25 sources

$79/month
  • 3 projects
  • Up to 25 sources
  • Find & reply on Reddit + HN
  • ~1,000 drafts / month
Try Growth free

Agency

Everything in Growth + X / Twitter

$199/month

$99 to Signal + $100 X API

  • Unlimited projects
  • Up to 100 sources
  • ~4,000 drafts / month
  • Find & reply on Reddit + HN
  • X / Twitter posting + find & reply
  • We set up your X account with you
Try Agency free

Every plan includes the full scoring model, AI-drafted replies from your product context, and a 14-day trial with no credit card. Upgrade or cancel anytime from billing settings.

Questions founders ask

How does Surfio know my voice?
When you create a project, you describe your product, who it's for, and write a one-sentence pitch. Surfio uses that context plus the specific post it's replying to in order to draft something that sounds like a founder who actually read the thread — not a marketing bot. The more specific your product description, the better the drafts.
What if the AI draft isn't quite right?
Drafts are starting points, not final copies. Most founders edit for 5–10 minutes before shipping. The value is in finding the right conversation and having 80% of a reply already written instead of staring at a blank box.
Can I see posts that Surfio dismissed?
Yes. The Dismissed tab in your inbox shows every post Surfio filtered out, with the reason it was dismissed — whether the classifier scored it too low or the drafter decided a reply wasn't worth it. You can restore any dismissed post back to your queue with one click.
What if the thread already has a lot of replies?
Surfio surfaces threads based on how well they match your product, not how many replies they have. Some of the best opportunities are busy threads where a thoughtful, specific answer still stands out. You can always skip a thread and move to the next one.
How is this different from keyword alerters like F5Bot?
F5Bot is free and sends you raw keyword alerts for Reddit only — you still read every match and write every reply. Surfio covers Reddit, Hacker News, and X, scores every conversation on buyer intent and fit with your product, drops the 95% that don't fit, and drafts a founder-voiced reply for the 10–20 a week that do. F5Bot saves you a search. Surfio saves you the week.
How does the free trial work?
Fourteen days, all features unlocked, no credit card. Full drafting model, up to 25 sources, the same scoring model paid plans use. Cancel in one click from the billing page.

Stop reading feeds.
Start shipping replies.

Set up a project in two minutes. Let Surfio watch for a day. Open the inbox tomorrow morning and ship your first draft.

Start 14-day free trial

Free for 14 days. $29/mo after that if you want to keep it.