ENGINEERING
Merged-Bump Canary Watch with Auto-Rollback Ticket (Honeycomb + Linear)
After a dependency-bump PR merges, this watches Honeycomb for error-rate and latency regressions on the services the bump touched.
How it runs
The automated pipeline, trigger to output.
- TriggerGitHub bump PR merged webhookGitHub
- LogicLoad mapped services; set canary window
- ActionQuery Honeycomb error rate + p95 vs baselineHoneycomb
- LogicGate: fire only on regression threshold breach
- ActionOpen Linear incident with evidenceLinear
- OutputComment canary verdict on merged PRGitHub
What it does
Blast-radius mapping predicts what a bump might break; this closes the loop after merge. When a bump PR merges, the workflow records the downstream services it mapped, then watches Honeycomb across a canary window for error-rate and p95 latency regressions on exactly those services. If a service degrades beyond baseline, it opens a Linear incident pre-filled with the bump, the affected service, and the offending query.
When to use it
Use it when bumps ship continuously and you want regression detection scoped to the code the bump actually touched, instead of a generic dashboard nobody watches. It turns a silent post-merge regression into an owned ticket within minutes.
How it works
- 1A GitHub `pull_request closed/merged` webhook fires for a bump PR.
- 2A logic step pulls the previously mapped downstream services and sets the canary window.
- 3A Honeycomb action queries error rate and p95 latency for those services across the window versus the prior baseline.
- 4A logic gate fires only when a service crosses the regression threshold.
- 5A Linear action opens an incident with the bump, service, and Honeycomb query link.
- 6The workflow posts the verdict back as a comment on the merged PR.
Set it up
What you configure once, before turning it on.
- 1Connect GitHubRepos, issues, pull requests, actions.
- 2Connect HoneycombDistributed traces and queries.
- 3Connect LinearIssues, projects, cycles, triage.
- 4Set each agent's modelWe leave models unset so you pick the tier — fast + cheap, or top-quality.
- 5Tune it to your dataEdit the prompts, filters, and field mappings so it matches how your team works.
- 6Test, then turn it onRun once against a sample, confirm the output, then enable the trigger.
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