Security scanning live · learning, IDE and builder rolling out

Learn to code.Build real products.Ship securely.

Your AI-powered development workspace to build applications, understand your code, catch security issues, and deploy with confidence.

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Available today: GitHub scanning for five flaw classes with reviewable fix PRs. See the roadmap for what's next.

policy:onscan: 5 flaw classes

Illustrative preview of the Fixie workflow.

Hardcoded secretsMissing route authOpen Supabase RLSUnhandled async errorsUnthrottled endpoints

One workflow, from idea to deployed app

Not three separate tools. Build, learn, secure and deploy are stages of the same loop, so you stop switching between disconnected products.

  1. 1

    Idea

    Describe an app, or connect an existing repo.

    In development
  2. 2

    Build

    Generate frontend and backend, or code in your IDE.

    In development
  3. 3

    Learn

    Understand every file, decision and trade-off.

    In development
  4. 4

    Secure

    Scan each push and get reviewable fix PRs.

    Available now
  5. 5

    Deploy

    Ship through supported deployment integrations.

    Planned

Three ways Fixie works with you

jwt.sign(user, "secret123")
Why is this risky? A hardcoded secret lets anyone who sees the repo forge tokens. Move it to an environment variable.
Learn while buildingIn development

Stop copying code you don't understand.

Build real applications with AI while learning how your code works, why decisions were made, and how to improve what you create.

  • Explanations tied to your actual project
  • Architecture decisions and trade-offs, spelled out
  • Security issues explained next to the fix
checkout.tsauth.ts
res.json(order);
⚡ Fixie: add session check
Code inside your IDEPlanned

Your development workflow. With security built in.

Bring Fixie's code intelligence and security workflows into your IDE. Spend less time switching tools and repeating context, and more time building.

  • Explanations and findings in the editor
  • Reuses project context to cut repeated prompts
  • Review fixes without copy-pasting between tools
Booking app with Stripe payments
frontend/backend/security checks
ready to review
Build and deployIn development

From idea to deployed application. Without skipping security.

Build your application with AI, understand the code behind it, catch security problems, and move toward deployment with confidence.

  • Pick a supported stack, generate frontend and backend
  • Inspect the code, then run Fixie's security checks
  • Fix issues before deploying via supported integrations

AI can write your code. Fixie helps you verify what it ships.

Generated code is checked for the security issues Fixie supports. Findings are explained in plain English, and fixes are prepared for you to review. It runs as part of the build loop, not as a scan you remember to run at the end.

Detect

Available now

Find supported security issues in generated or existing code.

Understand

Available now

See where a finding is, why it matters, and how it could affect your app.

Fix and verify

In development

Prepare a fix, run the checks that are supported, and review the result yourself.

api/checkout.tsIllustrative example
12app.post("/api/checkout", async (req, res) => {
13 const order = await db.orders.create(req.body);
14 res.json(order);
15});
Suggested fix · opens as a PR for your review
- app.post("/api/checkout", async (req, res) => {
+ app.post("/api/checkout", requireSession, async (req, res) => {
- const order = await db.orders.create(req.body);
+ const order = await db.orders.create({ ...req.body, userId: req.session.userId });
HIGH

Missing route auth

api/checkout.ts · line 13

This route writes to the database without checking who is calling it. Nothing verifies a session before db.orders.create runs.

Anyone who finds the URL can create orders or flood your database. Generated routes can skip auth when the prompt never asked for it, so it's worth checking every time.

Add a session check before the handler runs and reject signed-out requests with a 401. Take the user ID from the session, not from the request body.

  • Does requireSession return 401 when you're signed out?
  • Is the order tied to the session user, not a field a caller can set?
  • Do other routes in this file need the same guard?

Verification result

Checks that ran are kept separate from checks that didn't.

Illustrative example

2 of 5 checks ran · 2 not run · 1 needs your review

  • Rescan of the patched file: missing route authRan · no finding
  • Rescan of the other four flaw classesRan · no new findings
  • Your project's testsNot run
  • Build and type checkNot run
  • Your review of the diffNeeds you

Example data for illustration, not a real scan. Verification only covers the checks that actually run. It isn't a guarantee that a fix is safe, so review every change.

  1. 1

    Generate or write

    Code from the builder, your IDE, or an existing repo.

  2. 2

    Detect

    Scan for the supported flaw classes.

    Available now
  3. 3

    Understand

    Plain-English reason, location and impact.

    Available now
  4. 4

    Review the fix

    A suggested change opens as a PR.

    Available now
  5. 5

    Verify

    Run the supported checks on the change.

    In development
  6. 6

    Ship

    Merge when you're satisfied.

What Fixie checks today

Available now
Hardcoded secrets

Keys, tokens and credentials that never should have landed in the repo.

Missing route auth

Routes exposed without the checks a production boundary needs.

Open Supabase RLS

Policies left too open for the data they are supposed to protect.

Unhandled async errors

Failures that turn into broken requests or silent background faults.

Unthrottled endpoints

Public entrypoints that invite abuse because nothing slows them down.

Try the public scanner

Built for people who build with AI

Approachable for an individual developer. Credible when a team depends on it.

Students and self-taught developers

Build portfolio-grade projects and understand each part of them, from the first prompt to the first deploy.

Indie hackers and hackathon teams

Move fast with AI tools without shipping leaked keys or open endpoints on launch day.

Professional teams

Keep review and remediation in the PR flow, with developer sign-off on every change.

What's live and what's coming

We'd rather show you exactly where things stand. Scanning and fix PRs work today; the rest is being built in the open.

  • GitHub repo scanning for five flaw classesAvailable now
  • AI-generated fix PRs, always reviewableAvailable now
  • Public scanner for any repositoryAvailable now
  • Automated checks on generated codeIn development
  • Project-aware code explanationsIn development
  • AI app builder (frontend and backend)In development
  • IDE integrationPlanned
  • One-click deployment integrationsPlanned

Creator Nights: meet the people building with Fixie

Informal meetups in Tallinn, Stockholm, and Poland for students, builders and engineers shipping with AI tools. Practical security talk, engineering trade-offs, no pitch deck.

See upcoming eventsJoin the list
  • Tallinn · date pending
  • Stockholm · date pending
  • Poland · city and date pending

Learn by building something real. Ship it securely.

Start with a free look at what Fixie finds in your code. Try the public scanner on a live repository, or get early access to the full workflow.

Start buildingTry the public scannerAPI docs
Developer control stays intact: no auto-merge, no hidden writes, just reviewable changes.