Make software failures reproducible
and fixes permanent.

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What becomes repeatable
  1. 01World
  2. 02Trigger
  3. 03Failure
  4. 04Repro
01 / The product

Telemetry explains a failure.
A repro makes it happen again.

Evidence
Logs and tracesyou reconstruct
Error reportsyou interpret
Steps in a ticketyou retry
"happens in production"you guess
Verified Repro
Captured Worldrestored
Exact Triggerreplayed
Same Failurematched 3 times
repro_8f3a2c91ready
02 / The closed loop

From a production failure to a regression check.

STEP 01
Capture
STEP 02
Verify
STEP 03
Fix
STEP 04
Keep
Before the fix
repro_8f3a2c91
REPRODUCEDthe same failure happened again
After the fix
repro_8f3a2c91
PASSsame Repro, no failure
03 / Backend bugs

Different failures. The same repeatable result.

01 / WORLD
02 / TRIGGER
03 / FAILURE
READY AS
RequestAPI
Order row and payment reply
POST /checkout
accepted order is missing
repro_8f3a2c91
StreamOrdered events
Ledger state and offsets
capture, settle, refund
balance becomes negative
repro_71b8e0d5
WorkJobs and queues
Queue lease and charge record
redeliver charge job
customer charged twice
repro_c40d19f7
ConcurrencyRaces
Inventory row and cache state
reserve and cancel race
stock drops below zero
repro_a19c6f34
04 / Keep the fix

A fixed production bug becomes a check for later code.

Kept Repros checkout-service
0 fixed failures checked on this source
One workflow checks every kept Repro.
05 / Pricing

Free

$0
  • One project
  • Five visible Repros
  • Rust, .NET, Go, Python, and Node.js SDKs
  • Managed capture, replay, debug, check, and keep
Start free

Enterprise

Custom
  • Negotiated projects, capacity, and retention
  • Enterprise SSO
  • Security review and guided onboarding
Request a pilot

Stop reconstructing the bug.
Reproduce it.

Start free Request a pilot