Auto-Fix Agent — Mergic | One-Click Safe Patches With Tests

Patches that pass review

It writes the fix the way your team would

House-style aware

Patches match your linter, formatter, type system, and the conventions seen in your last 1,000 PRs.

Tests included

Every patch ships with regression tests. Covers the failure mode that triggered the fix. Coverage delta shown.

Safe by default

Refuses to patch destructive operations or under-tested code paths. Abstains below confidence threshold.

Idiomatic

Uses your existing helpers, wrappers, and utilities. No new abstractions sneaking into the diff.

CI-verified

Patches are proposed only after passing your own CI on a draft branch.

Human-in-the-loop

You always approve before merge. Auto-merge is opt-in, per-repo, per-confidence-band.

One click. Tested. Merged.

The Auto-Fix Agent posts the patch as a follow-up commit on the PR branch. Your team reviews the diff like any other change — except this one came with tests.

Patch posted as branch commit, not a separate PR
Includes regression tests and coverage delta
Conforms to your linter, types, and CI
Abstains below your team’s confidence threshold

+ import { withIdempotency } from "@/lib/billing";
+
  export async function handleRefund(req) {
+   return withIdempotency(req, async () => {
      const charge = await stripe.charges
        .retrieve(req.body.id);
      if (charge.amount > 100000) {
        await notifyOps(charge);
      }
      return refund(charge);
+   });
  }

tests      3 added
coverage   +1.4%
CI          all green
confidence 96/100

Bulk fixes for legacy code

Sweep an entire codebase for a single class of bug — missing idempotency, deprecated APIs, unsafe SQL — and ship the migration as a series of reviewed patches.

Define the rule once; Mergic finds every instance
Generates one PR per service or one rolled-up PR — your choice
Bisected on CI so partial failures don’t block the migration

mergic sweep \
  --rule="missing-idempotency" \
  --scope=services/billing

scanning  ████████████████ 100%
found     42 instances in 11 files
patching  ████████████████ 100%
PRs       11 opened
tests     +38 added

FAQ

No — unless you explicitly enable auto-merge per repo and per confidence band. Default is human-in-the-loop on every patch.

It won’t — Mergic runs your CI on the patch before posting. Failed patches are never surfaced. You only ever see green diffs.

By default, no. Schema migrations require explicit per-repo enablement and an extra reviewer approval.

From finding to merged patch in one click