Response shape drift lines up with a mapper update on the estimate path.
Use Case
API drift detection
Your API still returns 200, but the contract already shifted.
API review
logito dev start logito review
Hit the endpoint, then review the contract drift in one pass.
Install CLI
Takes ~30 seconds. No signup required.
Runs locally. No data leaves your system.
Works with any API, service, or local environment.
What happens after you install:
- 1. Start a run
- 2. Trigger your system
- 3. See exactly what changed
Problem
Drift breaks consumers before it breaks your tests.
- Fields disappear quietly across sampled responses.
- Payload shape shifts without a loud failure.
- Downstream consumers feel the break after the change ships.
Hidden Issue
The hidden issue is behavioral variance across real responses.
Specs and mocks tell you what should happen. Drift usually shows up in the real run: omitted fields, changed normalization, or subtle response differences.
- A contract can degrade gradually instead of failing all at once.
- Optional fields often vanish only on some payload paths.
- By the time support tickets land, the baseline is already fuzzy.
Logito Flow
Run -> Diff -> Insight -> Action
Run Capture the real request and response path.
Diff Compare sampled behavior to a known baseline.
Insight See contract variance instead of scanning logs.
Action Fix the contract or intentionally update the baseline.
Example
Run it once. Review what changed. Act with context.
API review
logito dev start logito review
Hit the endpoint, then review the contract drift in one pass.
API drift review
+ output field "carrier_notes" omitted in 18% of responses+ estimate payload normalization changed on /v1/quotes+ contract variance detected against previous baseline
Restore the field, update consumers, or explicitly lock the new baseline.
Install Fast
Install, start, and review the next run.
Fast path
brew tap progadigital/tap brew install logito logito dev start
Takes ~30 seconds. No signup required.
Benefits
Why teams use this loop
- Catch contract drift before downstream systems feel it.
- Review real response variance instead of relying on assumptions.
- Keep API changes intentional instead of accidental.
Positioning
Why this catches drift faster
Schemas tell you what should stay stable.
Logs tell you symptoms after the break.
Logito shows the real contract drift before consumers absorb it.
API drift becomes expensive once consumers adapt around it or break in production. The fastest point to catch it is right after the run changed.
Install
Install Logito before the next API contract slips.
Capture the run. Review the drift. Fix the contract with evidence.
Takes ~30 seconds. No signup required.
Runs locally. No data leaves your system.
Works with any API, service, or local environment.
Also Useful For