Merge-ready PRs without the review bottleneck.

MergeMitra reviews the code as soon as the PR is raised. So your developer has all the context to make the code merge ready

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mergemitrabot
Severity: Critical

Unhandled rejection from fetchUsers() can bubble as unhandled promise rejection.

Suggested change
7.then(setData)
7.then(setData)
8.catch(setError)
mergemitrabotjust now
Issue Notes
Code Correctness
Unhandled rejection in fetchUser
Race condition between refresh and logout
Maintainability
7 magic numbers should be constants
The Status Quo

Code review is broken.
Your team just got used to it.

Tech Leads spend hours under a pile of shallow issues. And the real problems — the design issues — get buried under a wall of nitpicks.

Reviewers drown in grunt work

Your best engineers spend 40% of review time on naming, null checks, and missing error handling — things a machine should catch.

PRs sit idle for days

Async review cycles stretch from hours to days. Junior engineers context-switch. Momentum dies. Shipping slows to a crawl.

The important stuff gets missed

When reviewers are exhausted from flagging ten magic numbers, they miss the one architectural decision that costs six months of tech debt.

A Developer’s Reality

You shipped a great PR.
Then the waiting began.

Every developer knows this loop. You pour hours into a feature, open the PR with pride… and then nothing happens. For days.

Monday 2:30 PM

PR opened. Feeling great.

You’ve thought through edge cases, written tests, cleaned up the diff. You hit “Create Pull Request” with confidence. This one’s solid.

Momentum: High
Tuesday — Wednesday

Silence. Total radio silence.

No comments. No approvals. Just a notification badge you keep refreshing. You pick up another ticket but your mind keeps drifting back—“did they see it?”

Momentum: Fading
Thursday 4:15 PM

“Can you rethink the approach here?”

The reviewer raises a design concern. It’s a fair point—but you wrote this code 3 days ago. You’re essentially re-reading your own PR like a stranger’s. The context you had? Gone.

Momentum: Lost
Friday & beyond…

Round two. Maybe round three.

Each review cycle takes another 2 days. You’re patching code you barely remember. The PR that should have shipped Monday is now a multi-week saga that drains everyone involved.

Momentum: Zero

This loop isn’t a developer problem. It’s a tooling problem.

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PR Readiness Scorecardbot
92/ 100
Code Correctness95
Test Coverage88
PR Documentation96
Maintainability90
Ready for review — no critical issues found.

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src/hooks/use-auth.ts
mergemitrabot
Maintainability
  • 7 magic numbers detected 0.0825, 9.99, 0.02, 3.5, 24.99, 14.99, 999 should be named constants. These are business-critical values that will be silently wrong when they change.
  • Cryptic parameter names o, d, q reveal nothing about intent. order, deliveryMethod, quantity are self-documenting.
  • Function does too much Tax calculation, shipping logic, fee computation, and delivery routing are four separate concerns. Extract into focused helpers.
  • Abandoned TODO // TODO: handle international has no issue reference and will rot silently.
src/__tests__/notification.test.ts
function useAuth() {
  const [user, setUser] = useState(null);

  useEffect(() => {
    const session = getSession();
    if (session) {
      fetchUser(session.token)
        .then(setUser);
    }
  }, []);

  async function logout() {
    await revokeSession();
    setUser(null);
    navigate("/login");
  }

  async function refreshToken() {
    const session = getSession();
    const newToken = await renewToken(session.token);
    updateSession(newToken);
  }

  return { user, logout, refreshToken };
}
mergemitrabot
Code Correctness
  • Unhandled promise rejection If fetchUser fails (network error, 401), the .then() chain has no .catch(). This produces an unhandled rejection and leaves the user stuck in a loading state forever.
  • Stale closure in `refreshToken` getSession() reads from outside React state. If the session was updated between renders, this reads stale data. If session is null, session.token throws a TypeError.
  • Race condition If refreshToken() and logout() fire in quick succession, updateSession can overwrite the revoked session, silently re-authenticating a logged-out user.
src/utils/process-order.ts
mergemitrabot
Test Quality
  • Time-dependent assertion Date.now() - startTime depends on system clock and CI load. Use vi.useFakeTimers() to control time deterministically.
  • Testing implementation details mock.calls[0][1] couples the test to internal call order. Use toHaveBeenCalledWith(user, "Hello") to assert behavior, not structure.
  • Assumes render order toEqual(["Alice", "Bob", "Charlie"]) passes incidentally if the component preserves array order. Add an explicit sort prop or test sorted scenarios.
Not Just Criticism — A Fix

Shows the fix, not just the flaw.

Every suggestion comes with a GitHub-native code diff showing exactly what to change. One click to accept. No guessing, no back-and-forth, no "what do you mean?"

mergemitrabot
Severity: Major

Missing error state — fetchUsers() rejection leaves no way for the UI to react.

Suggested change
9useEffect(() => {
10 fetchUsers().then(setData);
11}, []);
9useEffect(() => {
10 fetchUsers()
11 .then(setData)
12 .catch((err) => setError(err.message));
13}, []);
Human-First Philosophy

Not a reviewer replacement.
A reviewer force multiplier.

MergeMitra handles the first pass so your humans can focus on what actually matters.

MergeMitra handles
  • Bugs, regressions & edge cases
  • Security vulnerabilities & unsafe patterns
  • Missing tests & flaky test signals
  • Code style, naming & conventions
  • Magic numbers & tech debt markers
  • PR description & commit quality
Humans focus on
  • System architecture & design patterns
  • API contracts & breaking changes
  • Scalability & performance strategy
  • Business logic validation
  • Database schema & migration safety
  • Long-term maintainability vision
Configurable

Your project standards, built in

Drop a config file in your repo and MergeMitra adapts to your team’s standards from day one. Custom guidelines, file exclusions, and suggestion limits are all configurable.

  • Custom guidelines — point to your team’s coding standards and MergeMitra enforces them
  • Exclude patterns — skip generated code, lock files, and build artifacts
  • Suggestion limits — control how many inline fix suggestions are posted per review
  • Auto-review toggle — review every PR automatically, or only when explicitly requested
.mergemitra.json
{
  "autoReview": true,
  "postScoreCharts": true,
  "postCommunicationAnalysis": true,
  "suggestionLimit": 5,
  "customGuidelinesPaths": [
    ".github/review-guidelines.md",
    "docs/coding-standards.md"
  ],
  "excludePatterns": [
    "**/generated/**",
    "**/*.config.js"
  ]
}
The Obvious Question

Can’t I just review my code
with Claude Code or Cursor?

Sure, you can. They’re great coding tools. But reviewing code in your editor and reviewing it in the PR workflow are two very different things.

AI Coding Tools
  • Only you see the feedbackThe review stays in your terminal. Your team never sees it. There’s no shared record on the PR.
  • You have to ask for itEvery time. For every PR. If you skip it once, that’s the PR that ships with the bug.
  • Not in the PR workflowNo inline comments on the diff. No suggested changes to commit. The feedback lives outside where your team actually reviews code.
  • No team-wide consistencyEach developer prompts differently and gets different results. No shared standards. No severity levels. No scorecard.
  • No tracking across cyclesPush a fix? You start from scratch. There’s no memory of what was flagged before or what’s been resolved.
MergeMitra
  • Visible to the whole teamReview comments live on the PR itself. Everyone sees what was flagged and what was fixed.
  • Fully automaticTriggers on every PR, every time. No prompting required. No one has to remember.
  • Native GitHub experienceInline comments on the exact line. Suggested changes you can commit directly. Everything lives in the PR.
  • Same standard for every developerStructured severity levels, organized by dimension, with a PR scorecard. Consistent quality across the whole team.
  • Tracks across review cyclesPush a fix and MergeMitra knows what’s resolved and what persists. No duplicate comments. Just the delta.
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1

Install the GitHub App

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2

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3

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