Evidence-first debugging · IBM Bob 2.0

Turn a vague bug into a verified fix.

BugReplay gives developers a reproducible evidence trail from failure report to regression test. This prototype demonstrates a seeded checkout defect using fictional data.

Explore BUG-001 →See verification
Evidence SummaryBUG-001
Original output$40.00
Expected output$45.00
Evidence state✓ Verified path
SAVE10 · coupon-double-discount · northstar-v1
01 / Report

Start with evidence

Follow a deterministic reproduction instead of guessing what the reporter meant.

BUG-001 · High severity
02 / Repair

Work with Bob IDE

Inspect the calculation, make a focused repair, and add the regression assertion.

subtotal − discount × 2 → subtotal − discount
03 / Verify

Prove the outcome

Compare genuine before-and-after test artifacts with full source provenance.

1 failed → 3 passed · checkout.test.ts