Turn your legacy
into living functional maps
FirstMate analyzes your codebases to rebuild the functional logic behind them. Browse Domains → Flows → Steps across repos and services—instantly, interactively, and always up to date. And when you're ready, make functional changes directly in FirstMate and watch them apply automatically to your codebase.
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- Real logic lives in the code—docs are outdated or missing.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.
All your legacy logic—mapped and editableSo you can ship with confidence
Functional Explorer
Browse Domains → Flows → Steps. See triggers, validations, side effects, data writes, and integrations with direct links to code across repos.
Feature Demo
Auto‑updated functional docs
Structured docs generated from code: flow diagrams, step lists, pre/post‑conditions, and impacted services. Always current, zero manual work.
Feature Demo
Flow‑aware Q&A & editing
Ask ‘Where do we send customer emails?’ or ‘What writes the invoice due date?’ Then change it—FirstMate updates the flow and code automatically.
Feature Demo
From code to clickable clarityEnd‑to‑end in a few clicks
FirstMate continuously indexes your repositories, extracts functional logic, and presents it as navigable maps you can trust. You can also propose and apply functional changes directly from these maps, updating your codebase instantly.
Connect your repositories
Authorize GitHub, GitLab, Bitbucket, or Azure DevOps and select the repos you want analyzed.
Extract functional logic
FirstMate parses code to discover domains, entities, events, validations, side effects, and cross‑service links.
Organize by Domain → Flow → Step
We group behavior into functional domains, map flows (e.g., ‘Invoice → Send → Reconcile’), and list the exact steps with code references.
Generate interactive maps
Explore flows across services with clickable steps, inputs/outputs, and links to the precise files, functions, and lines.
Make and apply functional changes
Edit flows directly—FirstMate translates changes into code modifications and applies them across all impacted repositories.
Keep everything fresh
On every merge, maps, docs, and applied changes stay in sync—no manual maintenance.
Choose what fits your requirements best
🎁 50% off for the first 100 customers
(23 left)
Starter
Perfect for small teams getting started
Professional
For growing teams with advanced needs
Enterprise
For large organizations with custom requirements