Now available for Slack

Find what can go wrong
before it does

Pre-Mortem brings structured risk sessions to your Slack workspace. Your team proposes risks, AI surfaces the ones you might have missed, and everyone votes to prioritize.

Not yet verified by Slack — we're in the process. The app is simple and open about what it does.

Slack logo Add to Slack — it's free

Includes 5 free sessions to get started · No credit card required

How it works

Three steps from idea to prioritized risk report

Starting a premortem session in Slack
🚀
Step 1

Start a session

Type /premortem in any channel. Give your session a topic and invite your team to join in the thread.

AI generating risks in Slack
🤖
Step 2

Propose & generate risks

Team members submit risks directly in Slack. Then hit Generate risks — AI reads the context and surfaces additional risks your team may have overlooked.

Team voting on risks in Slack
📊
Step 3

Vote & get a report

Everyone rates each risk by likelihood and severity. Finish the session to get a prioritized summary — highest-impact risks at the top, color-coded for clarity.

The output

A prioritized risk report, delivered in Slack

Risks ranked by combined likelihood + severity score, color-coded for quick scanning. Copy it straight into your project doc.

Voting closed summary in Slack Final prioritized risk report in Slack

Why Pre-Mortem?

Premortems work. We just make them easier to run.

🧠

AI fills the blind spots

Your team knows the domain. AI knows what tends to go wrong. Together you get a more complete risk picture than either could alone.

💬

Lives in Slack

No new tool to learn or tab to open. Everything happens in the channel where your team already works.

🗳️

Structured voting

Every risk gets rated on likelihood and severity. No HiPPO effect — everyone's vote counts equally, anonymously aggregated.

📋

Actionable output

Session closes with a prioritized risk report — sorted by combined score, color-coded, ready to copy into your project doc.

Fast to run

A full premortem session takes 15–20 minutes, not a day. Run one before every launch, sprint, or big decision.

🔒

Multi-workspace ready

Each workspace gets its own installation. Tokens are encrypted at rest. No data is shared across teams.

Simple pricing

Start free. Upgrade when you need more.

Free
$0
forever
  • 5 free sessions to get started
  • Full AI risk generation
  • Unlimited team members
  • Prioritized reports

After 5 sessions, upgrade to Pro or reach out — we're flexible.

Recommended
Pro
$10
per workspace/month
  • Unlimited sessions
  • Full AI risk generation
  • Unlimited team members
  • Priority support

Ready to find your blind spots?

Add Pre-Mortem to Slack and run your first session in under a minute.

Not yet verified by Slack — we're in the process. The app is simple and open about what it does.

Slack logo Add to Slack — it's free