AI AGENTS

Post-Deploy Cardinality Regression Guard

On each GitHub deployment, an agent baselines new Honeycomb attribute cardinality against the prior release and blocks or comments on the PR when a deploy introduces a runaway…

CategoryAI Agents
Enginesim
Difficultyadvanced
Triggerevent
Steps5
Setup~25 min

How it runs

The automated pipeline, trigger to output.

  • TriggerGitHub deployment event firesGitHubGitHub
  • ActionSample post-deploy attribute cardinality from HoneycombHoneycomb
  • LogicDiff against pre-deploy baseline for runaway fields
  • ActionComment warning on the associated GitHub PRGitHubGitHub
  • OutputPing the author in Slack with suggested capSlack

What it does

Most cost blowups arrive in a deploy that adds an unbounded attribute. This agent runs right after a release: it samples the new attributes flowing into Honeycomb, compares their cardinality to the pre-deploy baseline, and if a freshly introduced field is exploding it comments on the originating GitHub PR with the field name, growth rate, and a recommended cap or drop. It catches regressions while the author still remembers the change.

When to use it

Use it as a guardrail in teams shipping frequently, where a single new label can 10x billable series. Best when deploys are tracked through GitHub deployment events.

How it works

  1. 1A GitHub deployment event triggers the run.
  2. 2The agent samples post-deploy attribute cardinality from Honeycomb for the affected services.
  3. 3A logic step diffs against the stored pre-deploy baseline to find newly introduced or sharply growing fields.
  4. 4If a runaway field crosses the threshold, it identifies the field and growth multiple.
  5. 5It posts a warning comment on the associated GitHub PR and pings the author in Slack with a suggested cap.

Set it up

What you configure once, before turning it on.

  1. 1
    Connect GitHubRepos, issues, pull requests, actions.
  2. 2
    Connect HoneycombDistributed traces and queries.
  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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