What this article solves: Most postmortems end up in a doc that nobody reads. When something breaks at 2am, you need on-call runbooks that point to the right context, not a folder of stale docs. Source-linked documentation connects incident threads to PRs and tickets. This guide explains what actually helps.

Who this is for: Engineering teams, on-call engineers, and incident commanders who need incident documentation that prevents repeat failures.

The postmortem trap in incident response

Teams write postmortems. They document root cause, timeline, and action items. Then the doc sits in a folder. When a similar incident happens six months later, nobody remembers to check it.

The fix is not better postmortems. Outdated runbooks are a common pain: static docs decay faster than systems change. Runbooks from months ago often reference deprecated commands or services that no longer exist, so on-call engineers stop trusting them. The fix is linking the postmortem to the artifacts that matter:

• The PR that introduced the bug
• The ticket that tracked the fix
• The Slack thread where the team aligned on the approach

Source-linked documentation turns those links into searchable context. When someone asks "did we have something like this before?", the answer is not "maybe, check the postmortem folder." It is a doc with source links. Click. Verify. Act.

How traceability works for incident documentation

A generative documentation platform can build incident documentation and on-call runbooks from:

1. Incident thread → Links to the PR(s) involved
2. Fix PR → Links back to the incident and ticket
3. Generated doc → Summarizes the incident, the fix, and the sources

Documentation from GitHub PRs and Slack threads creates a traceability chain. The engineering knowledge base becomes a living runbook. It updates when new incidents happen and stays searchable when you need it.

What gets captured for on-call runbooks

When you connect your GitHub repository, Slack, and Linear:

• Incident summaries with links to Slack threads
• Fix summaries with links to PRs and tickets
• Decision context: why you chose this approach

All auto-generated. All source-linked. All searchable. That is how on-call runbooks stay current. They are built from the artifacts that created them.

How to build incident documentation from your GitHub repository

To get incident documentation that actually helps:

1. Connect GitHub, Slack, and Linear: Read-only access. The system indexes PRs, threads, and tickets.
2. Link incident threads to fix PRs: When you fix a bug, link the PR to the incident ticket. The traceability chain builds itself.
3. Use On-call mode: Generative documentation platforms often have modes (Traditional, Onboarding, On-call). On-call mode tailors output for incident response: runbook notes, quick context, source links.
4. Search when you need it: "Checkout latency" or "Stripe webhook" returns docs with links to the PRs and threads that matter.

No manual runbook writing. No "remember to update the doc." The engineering knowledge base updates when your code and discussions do.

The outcome: incident knowledge that does not get lost

Incident knowledge that does not get lost. Repeat failures that get caught. A team that learns from every outage.

• On-call runbooks that link to the source
• Incident documentation that stays current
• Architecture documentation that includes postmortem context

That is traceability that actually helps.