PlumblineStart free

Features

Built around one question: what changed?

Everything below exists to shorten the gap between noticing a number move and knowing which change moved it.

Correlation

Attribution you can put in a postmortem

Commit-range attribution
Narrows a regression to a range of commits and publishes a confidence figure. Below 0.7 it reports the range as unresolved rather than picking a favourite.
Flag-aware
Feature flag flips are first-class events on the same timeline. A regression behind a 5% rollout is found at 5%, not at 100%.
Multi-signal
Latency, error rate, saturation and cloud spend are evaluated together. A deploy that halves latency by tripling instance count is reported as both.

Control

Budgets that page a human rarely

Error budgets per service
Define the budget once. Plumbline projects burn rate and escalates only when the projection crosses the window, not when a threshold blips.
Automatic holds
A release that is projected to exhaust the budget is held and rolled back before the page fires. The action is written back to the release record.
Quiet by construction
There is no alert-rule editor because there are no alert rules. This is the whole design, not a missing feature.

Fit

It goes where your deploys already are

CI adapters
GitHub Actions, GitLab CI, Buildkite, Argo. The adapter emits a release event; nothing else changes in your pipeline.
OpenTelemetry native
Point your existing collector at Plumbline. No proprietary agent, no second instrumentation pass.
Export everything
Every release record, attribution and hold is available over an API and as a nightly Parquet drop into your own bucket.

Next

Connect one service and ship once.