IT OPS

On-Demand Single-Host Cert Check via Webhook

Accepts a hostname over a webhook and returns its certificate's issuer, expiry date, and days remaining in the response, optionally filing a Trello card if it's already expiring.

CategoryIT Ops
Enginesim
Difficultybeginner
Triggerwebhook
Steps5
Setup~5 min

How it runs

The automated pipeline, trigger to output.

  • TriggerHTTP webhook receives a hostname payloadHTTP webhook
  • ActionShell: openssl probe and parse cert fieldsShell
  • LogicDecide if cert is within the warning window
  • ActionFile a Trello card when expiringTrelloTrello
  • OutputReturn parsed cert details in the responseHTTP webhook

What it does

Exposes the cert sweep as a callable endpoint. Send a POST with a hostname (and optional port) and the flow probes that single host's TLS certificate, returning issuer, subject, notAfter, and days-to-expiry synchronously in the HTTP response. If the cert is under the threshold it also drops a Trello card so the finding is tracked, not just glanced at.

When to use it

For ad-hoc checks from a runbook, a chatop command, or another system that needs a quick authoritative answer on one host without waiting for the nightly batch.

How it works

  1. 1An HTTP webhook receives a hostname payload.
  2. 2A shell step runs openssl against that host and parses the certificate fields.
  3. 3A logic step decides whether the cert is within the warning window.
  4. 4If it is, a Trello action files a remediation card.
  5. 5The flow returns the parsed cert details as the webhook response.

Set it up

What you configure once, before turning it on.

  1. 1
    Connect HTTP webhookTrigger any URL on agent actions.
  2. 2
    Connect ShellRun sandboxed commands inside the workspace.
  3. 3
    Connect TrelloKanban boards for everything.
  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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