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Magento code quality audit

A Magento 2 code audit that puts a number on technical debt. We read the whole codebase and tell you what it costs, what blocks your next upgrade, and what to ignore.

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Technical debt is what people say when nobody has measured it

Everyone agrees the codebase is messy. No code audit tool can price it, so it never gets budgeted and it compounds.

Codebase summarySample audit
  • Custom modules34
  • Core files overridden11
  • Class preferences replacing core27
  • Deprecated or removed API calls267
  • Extensions with no update in 24 months6
  • Automated test coverage3%
  • Blocking a 2.4.9 upgrade6 issues
Findings by severity39 that matter
  • Critical2
  • High9
  • Medium17
  • Low11

~30%

longer on every future feature. The team had been describing delivery as "slower than it used to be" for a year.

Coding-standard violationsPHPCS
39That matter4,773One automated pass
  • Whitespace and formatting4,214
  • Docblocks and naming559
  • Architecture rules27
  • Security rules12

How a Magento codebase quietly gets expensive

None of these break the store today. All of them make next quarter cost more than last.

  1. 1

    Core files edited directly

    The strongest predictor of a painful upgrade. Every override is a merge conflict waiting for the release you can't postpone.

  2. 2

    Preferences where a plugin would do

    Class preferences replacing core wholesale, so two extensions touching the same class become an unwinnable argument.

  3. 3

    Extensions nobody owns

    Modules whose vendor stopped shipping updates years ago, running with full database access and blocking every version bump.

  4. 4

    Deprecated APIs still in use

    Code written against methods Magento has announced it's removing. It works until the upgrade you need for a security patch.

  5. 5

    No safety net

    No tests, no CI checks, no review requirement. Every release is a gamble that whoever wrote it was careful.

  6. 6

    Knowledge that lives in one head

    Undocumented, inconsistent code only its author can navigate, which turns onboarding into archaeology.

What we review

Ten areas, read across the whole codebase rather than sampled from whatever someone happened to open.

Core integrity and overrides

Every core modification, preference and rewrite, with what each one changes and what it costs at upgrade.

  • Direct core file edits
  • Class preferences replacing core
  • Rewrites and their blast radius
  • Upgrade cost per override

We'll also tell you what to ignore

Four thousand violations is not four thousand problems. Presenting the raw count looks thorough and buries the findings that matter.

  • Formatting and style violations

    Real, cheap, and worth fixing automatically in a single pass.

  • Deprecations with years of runway

    Flagged, dated and scheduled. Not urgent, and we'll say so.

  • Non-standard patterns that were deliberate

    Sometimes the odd implementation was the right call. We ask before filing it as debt.

  • Warnings for modules you don't use

    Installed, disabled, forgotten. The fix is deletion, not remediation.

The upgrade question, answered

Most merchants commission one because a version decision is looming. You get an answer.

Upgrade to 2.4.9? Not yet

Six blockers, each listed individually with the work to clear it, rather than a general sense of difficulty.

  • What happens if you wait

    The honest version: which security patches you're forgoing, and how much bigger the same job gets in twelve months.

  • Hyvä

    And whether Hyvä changes the maths

    If a frontend rebuild is on the table, some theme debt stops being worth fixing. We'll say which to let go.

AI reads every file. Engineers decide what it means

A Magento codebase is tens of thousands of files. Most audits sample a few and generalise.

What AI does

Reads every module, not a sample

Including the ones nobody documented.

Classifies architecture patterns at scale

So a systemic habit shows up as one pattern.

Maps the dependency graph

And finds logic duplicated across modules.

Reconstructs intent from git history

When the code carries no comments to explain it.

What only an engineer does

Distinguishes a mistake from a trade-off

The odd implementation often had a real reason.

Judges what a fix is worth

Against the risk of making it, and the release.

Decides which finding unlocks the others

Rather than handing you twenty of equal weight.

Signs the report

AI reads and classifies. Engineers own the verdict.

  1. 1

    Tooling

    Collection and static analysis

    Read-only copies of the code, scanned against Adobe's standards

    • Full repository
    • Composer files
    • Git history
    • PHPCS
    • PHPStan
  2. 2

    AI

    Whole-codebase reading

    Every custom module read and classified, not sampled

    • Architecture
    • Intent
    • Risk
    • Duplication
  3. 3

    Engineer

    Verification and evidence gate

    Every finding checked by a person before it reaches the report

    • Costing money?
    • Deliberate?
    • Worth fixing?
    • File reference
ISO 9001 certified company.ISO 27001 certified company.

Your code stays inside our ISO 27001 practice, under read-only access revoked at the end, and is never used to train a model.

What you receive

A debt figure with the reasoning behind it, and a plan that fits into normal releases.

Every finding opens to a file reference

Each finding names the file and what changed in it.

  • A debt figure, with the reasoning

    Feature drag, risk carried and the cost to clear, in numbers.

  • Findings by severity, with file references

    Each one openable and checkable, so nothing rests on our word.

  • A straight upgrade verdict

    Can you, what blocks it, what it costs, and what waiting costs.

  • A remediation plan that can be phased

    Sequenced into normal releases, unlocking items first.

  • An ignore-this list

    So no sprint goes on formatting while core overrides wait.

  • A walkthrough with the engineer who ran it

    Not an account manager reading notes.

  • A statement of what wasn't reviewed

    Recorded, so nothing is presented as clean by omission.

Who commissions one

Usually because a decision is waiting on an answer nobody inside the team can give neutrally.

  • You've inherited the store

    New agency, new team, or a business you bought. Find out what's in there before anyone touches it.

  • Upgrade or replatform ahead

    Knowing your debt before you price the project is the difference between a plan and a surprise.

  • Delivery keeps slowing down

    When every estimate creeps and nobody can point at a reason, the reason is usually in the codebase.

  • Technical due diligence

    Buying a business on Magento. We'll tell you what you're acquiring, and what year one of remediation costs.

  • You want your team benchmarked

    Not to grade anyone. "Is our code good" is a fair question nobody inside the team can answer neutrally.

  • Releases keep breaking things

    Which is usually a testing and process finding rather than a code one, and we'll say so.

A scanner counts violations. This one prices them

Static analysis is part of the audit, not the point of it.

What the triage leaves

Every line the scanner raises gets a verdict. Only what costs money reaches the plan.

  • 39 of 4,812 violations matter; the rest is one formatting pass
  • 11 core overrides, not 34 modules, drive the upgrade cost
  • 41 of 267 deprecated calls are urgent; the rest have runway
  • Complexity in 89 files isn't what slows your releases
  • No failing tests is a false pass at 3% coverage

What we need

Read-only throughout, in an isolated analysis environment. No changes are made to your store.

  • Access revoked when the audit ends
  • Never used to train a model
  • Handled inside our ISO 27001 practice
Git repositoryAccess
UserPermission
Magebit code auditRead-only
Your teamAdmin
0 changes made to your storeAnalysed on an isolated, read-only copy.

Git repository

The codebase, plus history for intent and change patterns

Composer files and lock

Dependency versions, constraints and advisory matching

CI or pipeline configuration

Release safety, automated checks and the review rules on every merge

Magento admin

The installed module list, reconciled against what the code contains

A staging environment

Behaviour verification without touching production, where available

Scope and what it costs

Module count, codebase size and how much is custom decide the effort. Nothing is quoted from a template.

  • Scoped on the first call

    Module count, codebase size and how much is custom decide the effort.

  • Fixed price, up front

    Our Fixed Cost Estimate Guarantee: the approved number is final.

  • Remediation quoted separately

    And phased, because clearing debt in one project is rarely the cheapest way.

Then we fix it, at a pace that fits releases

Debt built up over years doesn't have to come down in one quarter. Remediation is sequenced into normal development so the store keeps shipping.

Fix it with us

Findings become scoped work, priced up front and delivered through four quality gates.

Or give it a dedicated team

The same developers every week, working the roadmap and the debt in parallel.

What a code audit should give you, and rarely does

Static analysis produces thousands of warnings. Pricing them is the actual job.

What you get

Magebit audit

Typical agency

Automated tool

Technical debt priced, not just counted

Upgrade blockers tied to a release

Varies

Your code separated from the platform's

Sometimes

Findings grouped by pattern, not by line

Debt distinguished from deadline

Varies

Remediation sequenced by dependency

Sometimes

Read-only, no changes to your repository

What partners say about us

Magebit did a great job with the new SBS platform, now used widely across the automotive industry. I can definitely recommend them for complex digital commerce projects, their strategic approach helps us massively save on operational costs.

Kevin Hughes

European Technical Director

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There is no challenge for which they can't find a solution.

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Within just two to three months, they resolved issues that previously seemed unresolvable.

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What I value most is consistency. Magebit knows our store inside out, responds fast, and keeps it running smoothly year after year.

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Nobody budgets for a feeling

Every merchant with a slow development cycle already suspects the codebase. Without a number it never reaches the budget, so it never gets fixed. Give us read access and we'll give you the number.

Reviewed by Kristaps Rjabovs

Co-founder of Magebit, Forbes 30 Under 30

Kristaps Rjabovs, co-founder of Magebit.

Frequently asked questions

If you can't find the answer you're looking for, feel free to reach out to us. We're here to help.

We report what's in the code, not who wrote it. Most debt is the product of deadlines, staff changes and decisions that were reasonable at the time, and that context usually matters more than blame. If you want the audit to inform a conversation about capability, we'll give you the facts and stay out of the conversation.

Scoped on the first call against module count and how much of the codebase is custom, then quoted as a fixed price before work starts. Remediation is quoted separately and phased into normal releases.

Yes. A repository, composer files and pipeline configuration cover most of it. A few findings, runtime behaviour and configuration reconciliation, need more, and we'll record what we couldn't verify.

It gets specific attention. Unreviewed AI output tends to be plausible rather than correct: a Magento pattern misused, something the framework already provides re-implemented, an abstraction nobody needed. We build with agentic AI ourselves, under review, so we know what to look for.

Yes, and pair it with the security audit. Together they tell you what you're acquiring: the codebase's condition, the upgrade liability, the remediation cost for year one, and whether the platform is exposed or already compromised.

Rarely, and never as a default. Most codebases are worth repairing, and the report shows the maths either way: cost to remediate against cost to rebuild, so the decision is yours with numbers behind it.

Find out what your codebase is costing you

Read-only access to the repository is enough to start. You'll get a debt figure, severity-ranked findings with file references, a straight upgrade verdict, and a list of what not to bother with.

  • 1

    A certified engineer replies

    Not a sales script.

  • 2

    A number, not an adjective

    What the current state costs, and what fixing it costs.

  • 3

    No obligation

    The findings are yours to keep.

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