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CodeScene vs Mapnostics

CodeScene is the reference tool for behavioral code analysis — reading commit history for hotspots, change coupling and team patterns. Mapnostics answers a different question: what does a change actually reach, right now, in the code as it stands?

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mapnostics.com/repo/acme-platform/impact-simulator

Simulate a Change

What breaks if I remove the authentication middleware?

Simulate

RecentWhat breaks if I remove the authent…Which files depend on the UserServi…Impact of changing the database sch…What happens if I rename the config…

TryRemove auth middlewareUserService dependenciesDatabase schema changeRename config.js

Impact Summary

6 files potentially affected

3 High Risk2 Medium Risk2 Zombies in 1 file

Removing the authentication middleware stops session verification on every protected route. Three pages and two API routes become reachable without a signed-in user, and the server-side Supabase calls behind them either fail or return data the caller is not entitled to. Treat this as a security regression, not a refactor.

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General Best Practices

Standard checklist — not derived from this analysis

Run full test suite before deploying this change

Review all downstream dependencies before merging

Consider a staged rollout to limit blast radius

Reaches 2 API routes, 3 pages and 1 middleware — externally-triggered code in the blast radius.

Reaches 2 API routes and 3 pagesGET /api/ordersPOST /api/ordersGET /api/customers/[id]/checkout/admin/customersMiddleware does not run for: /api/webhooks/stripe

Writes to 2 tables: orders, sessions · reads customers, invoices

3 of 6 changed source files have tests (50%) — 3 untested.

Depends on 1 undeclared env var: AUTH_SESSION_SECRET — missing from the example env file, so a new deployment may run without it set.

Affected FilesWide blast radius

All (6)HighMediumLow

middleware.tsHigh RiskmiddlewareUntested

src/middleware.ts

Every protected route resolves through this file. Removing it drops the session check for the whole matcher, so the pages and API routes below answer to any caller.

High confidence

Middleware does not run for this route · no auth calls found in this file (absence of evidence, not a verdict)

Reads AUTH_SESSION_SECRET (L14) — undeclared in .env.example

ProtectedRoute.tsxHigh RiskpageUntested

src/components/auth/ProtectedRoute.tsx

route.tsHigh RiskGET /api/orders2 tablesUntested

src/app/api/orders/route.ts

CheckoutStepper.tsxMedium RiskpageUnit only

src/components/checkout/CheckoutStepper.tsx

CustomerDetailDialog.tsxMedium Risk1 table2 zombies

src/components/admin/CustomerDetailDialog.tsx

session-helpers.tsLow Risk1 package1 dead

src/lib/auth/session-helpers.ts

Where Mapnostics is different

✓

Live blast radius, not history

Ask what a change affects in plain English and get every dependent file, API route and page — traced from your current dependency graph, before you ship rather than after a regression.

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✓

Key-person risk you can act on

Mapnostics reads your git history to show who really owns each part of the codebase, and exactly what knowledge leaves if they do.

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✓

Grounded answers for AI agents

The same dependency graph is exposed over an MCP server, so Claude, Cursor and other agents answer codebase questions from facts, not guesses.

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Where CodeScene is strong

CodeScene's behavioral analysis is genuinely distinctive: change coupling over time, off-boarding simulation, and the organizational patterns in how a team touches code. If temporal and social analysis is what you need, it is the tool that defined the category. Mapnostics is structural and real-time rather than historical — it reads the dependency graph as it is today. The two answer different questions, and some teams use both.

Also comparing Sourcegraph or SonarQube?

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This comparison reflects our view of each product's public positioning as of September 2026. Both tools change — evaluate them against your own needs.