Coeur.AI
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Security for AI-built SaaS

Your coding agent built it.
Coeur tries to break it.

Coeur tests your deployed app like an attacker, finds exposed data and actions users shouldn't be able to perform, then gives your coding agent precise instructions and verifies the fix.

Start with a verified URL. No security expertise required.
coeur · live exposure check
— no URL needed
About two minutes. No account. You get the findings either way.
✓ Read-only✓ Runs with your permission✓ We store findings, never keys
Continuous, not point-in-time

A one-time scan tells you you're safe today. Coeur tells you the moment you're not.

This is the history you can show a customer or an auditor: when the app was safe, the one deploy that opened a hole, and how fast it was closed. A scanner gives you a PDF. Coeur gives you a pulse.

How it works

One loop: break it, learn it, harden it, watch it.

01 · scan

Attack it from the outside

Outside-in checks against your live URL — open databases, leaked keys, missing protections. Free, in about two minutes.

02 · learn

Show us how it should work

Browse your own product with the Coeur extension. We map routes, roles and intent — and spot where the app can be bent.

03 · harden

Your agent closes the gaps

We generate a hardening skill and precise prompts for Claude Code, Cursor, Lovable, v0 — then verify the fix landed.

04 · watch

Stay hardened on every deploy

Every ship re-tested against what we learned. A plain-English alert the moment anything opens — Slack or email.

Coeur Harden

Finding holes is half the job. Your agent closes them.

Browse your own product with the Coeur extension while we learn how it's supposed to work — which routes exist, who should do what. Coeur turns that into a hardening skill your coding agent applies, then re-scans from the outside to prove the fix.

01 · browse — click through your app; Coeur records routes and API shapes, never your users' data02 · learn — Coeur maps intended behavior and spots where the app can be bent03 · harden — a skill file for your agent, validation prompts, and a re-scan to verify
Claude CodeCursorLovablev0BoltGitHub Copilot
🔒your-app.com/dashboardcoeur
coeur hardenrecording
rec · POST /api/projects⚡ owner id trusted from clientrec · /billing as member role⚡ role check missing⚡ 4 hardening opportunities
Generate hardening skill →
1.1M

private messages exposed by one safety app's unsecured storage

// Tea app breach, 2025
2,000+

critical holes found across 5,600 live apps in one sweep

// Escape.tech, 2026
45%

of AI-assisted code ships with a security flaw

// Veracode, 2025–26

Watch what you shipped.

Free scan
$0one app, once
› full outside-in scan of your live app› plain-English findings + fix prompts› a snapshot — true the day you ran it
Promost builders
$19/moper app
› watched continuously — re-scanned on every deploy, alerts in minutes› Coeur Harden — extension, hardening skill, validation prompts› Slack + email alerts, scan history, your whole team
a scan is a snapshot — a subscription keeps it true
Business
Let's talkmany apps, SSO, CI/CD
› volume pricing across your portfolio› SSO, CI/CD gates, audit exports
Questions
Coeur.AI
Coeur only scans apps you own or are authorized to test.
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