DEVOPS

Build-time regression alert against Axiom baseline

On every Vercel deployment-ready webhook, compares the new build duration to the project's 30-day baseline in Axiom and alerts Slack when the build is a statistically significant…

CategoryDevOps
Enginesim
Difficultyadvanced
Triggerwebhook
Steps5
Setup~25 min

How it runs

The automated pipeline, trigger to output.

  • TriggerVercel deployment-ready webhook firesVercelVercel
  • ActionWrite build duration event to AxiomAxiom
  • ActionQuery Axiom for 30-day baseline statsAxiom
  • LogicCompute z-score, branch regression vs normal
  • OutputPost regression alert to SlackSlack

What it does

Fires the moment a Vercel deployment finishes building, ships the build duration as an event to Axiom, then queries Axiom for that project's trailing 30-day baseline (mean and standard deviation). If the fresh build exceeds the baseline by more than a configurable number of standard deviations, it raises an alert; otherwise it stays silent.

When to use it

Use it when you want immediate, per-deploy detection of a build slowdown but refuse to drown in false positives. Anchoring to an Axiom baseline means natural variance is tolerated and only genuine regressions page the team.

How it works

  1. 1A Vercel deployment-ready webhook triggers the flow with the build metadata.
  2. 2The flow writes the build duration and commit SHA as an event to Axiom.
  3. 3An Axiom query step pulls the project's 30-day mean and standard deviation.
  4. 4A logic step computes the z-score and branches: regression vs. normal.
  5. 5When the build is a significant outlier, the flow posts a Slack alert naming the project, commit, duration, and how many standard deviations over baseline it landed.

Set it up

What you configure once, before turning it on.

  1. 1
    Connect VercelDeploys, runtime logs, analytics.
  2. 2
    Connect AxiomLog streams, queries, dashboards.
  3. 3
    Connect SlackChannels, DMs, threads, mentions.
  4. 4
    Set each agent's modelWe leave models unset so you pick the tier — fast + cheap, or top-quality.
  5. 5
    Tune it to your dataEdit the prompts, filters, and field mappings so it matches how your team works.
  6. 6
    Test, then turn it onRun once against a sample, confirm the output, then enable the trigger.

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