Legacy code, meet your new co-pilot
Bring clarity
to your legacy codebases
FirstMate analyzes your codebases to rebuild the functional logic behind them. Understand your legacy codebase with the help of FirstMate's Q&A assistant. Browse Domains → Flows → Steps across repos and services—instantly, interactively, and always up to date.
Our trusted clients
PandaPanda
Forcit.co
10M Fintech (NDA)
International bank (NDA)
Insyncr
Explore open source projects
Ask FirstMate any question on open source codebases
The problem
Legacy isn’t a black box—until you need to change it
Critical behavior lives across old services, hidden in side effects, and scattered over repos. Docs are stale, experts are busy, and every change feels risky.
Knowledge locked in code & heads
- Real logic lives in the code—docs are outdated or missing.
- Only a few people know how things actually work.
- Onboarding and handovers drain senior time.
Fragmented across repos & services
- A single flow hops APIs, queues, and jobs.
- Teams interpret the same feature differently.
- Audits and impact analysis take days, not minutes.
Support can’t see the flow
- Tickets bounce because no one sees end‑to‑end steps.
- Root cause hunts start from scratch each time.
- Customers churn while teams piece context together.
Change is slow and risky
- Impact of a change is unclear across domains.
- You avoid touching old code because it’s opaque.
- Roadmaps stall on investigations instead of delivery.
Limited Time Offer
Choose what fits your requirements best
Most Popular