What does Agent-time AppSec actually mean?

MCP stands for Model Context Protocol, the open standard that lets AI coding agents (Claude Code, Cursor, Windsurf, GitHub Copilot, Gemini CLI) call external tools mid-session. CybeDefend registers as an MCP server. When your agent is about to write or modify code, it calls CybeDefend's MCP tool, which runs our reachability-aware SAST, SCA, IaC, secrets and business-logic scanners against that diff in under 1.2 seconds. The agent receives the security verdict, with a fix suggestion, before it proposes the line. This is fundamentally different from post-commit SAST: security runs inside the agent loop, at creation time, not after the PR is opened. No YAML configuration, no separate CI step, no review meeting. The agent enforces your security policy the same way it enforces your code style: automatically, in the prompt, before the first save.

How is this different from a regular SAST scanner?

Legacy SAST runs on commits and floods you with 95% false positives. We run at agent-time on the diff your agent is about to ship, with reachability + framework awareness. Same engine, different surface, 1/10 of the noise.

Which AI agents are supported?

Claude Code, Cursor, Windsurf, GitHub Copilot, Gemini CLI, Cline, Continue.dev and Zed. Plus a generic MCP server for anything else that speaks MCP.

Can we self-host? What about data residency?

Yes. Self-host on the Enterprise plan (single OCI image or air-gapped tar). EU and US regions are fully isolated, you pick where your data lives. CybeDefend SAS is registered in Lille, France; EU workloads are hosted in Paris and US workloads in Iowa.

Find, Fix, Repeat.Secure your

Your AI agent ships 500 lines while you read the first 20.

5 min · no card · No flaws, no bill

5/5

Claude CodeVibeDefend

Add an endpoint to update user profile

Backed by

The reckoning

No one can read the code anymore.

Your best reviewer reads 200 lines a day. Cursor alone accepts nearly a billion.

Lines shipped by AI agentsVulnerabilities introduced

AI suggests

Agents ship alone

≈1B accepted lines / day

Sources: Cursor, nearly 1B accepted lines/day (Aman Sanger, 2025) · 43% of API vulnerabilities exploit business logic (Wallarm, 2026) · 45% of AI-generated code contains an OWASP Top 10 flaw (Veracode, 2025)

Why now

Three years. Three paradigms. Your AppSec stack stayed in 2023.

Suggest era

Copilot whispers. SAST scans nightly.

Devs accept suggestions faster than reviewers can read them. AppSec is scanning code no human wrote. Slow, but still auditable.

AI outputlines / day

Reviewhuman

Gatenightly CI

editor · checkout.ts

const total = items.reduce((s, it) => s + it.price, 0);

if (total > 0) {

applyDiscount(cart, coupon);tab

}

Suggest era

Copilot whispers. SAST scans nightly.

Devs accept suggestions faster than reviewers can read them. AppSec is scanning code no human wrote. Slow, but still auditable.

AI outputlines / day

Reviewhuman

Gatenightly CI

editor · checkout.ts

const total = items.reduce((s, it) => s + it.price, 0);

if (total > 0) {

applyDiscount(cart, coupon);tab

}

Act era

Agents drive. Reviewers lag.

Cursor, Claude Code, Windsurf write whole features. SAST still bolted onto CI. Logic flaws land faster than anyone can flag them.

AI output1k+ LOC / day

Reviewtooling lag

Gatepost-merge CI

agent · applying changes

> refactor the checkout flow

payments.ts+142

orders.repo.ts+89

auth.mw.ts+51

3 files changed · 282 insertions

Debt era

Agents ship solo. You inherit the debt.

5,000 LOC / day across services. Logic flaws compound. The pipeline is the bottleneck and the blind spot. The backlog grows faster than any team can clear it. You are here.

AI output5k LOC / day

ReviewAgent-time

Gatein the prompt

diff · too fast to read

export async function settle(tx: Tx) {

const acc = await repo.lock(tx.accountId);

if (!acc) throw new NotFound();

const fee = round(tx.amount * FEE_RATE);

await ledger.write({ ...tx, fee });

queue.push('settlement', tx.id);

}

export function reconcile(day: string) {

const rows = db.query(SQL_RECONCILE, [day]);

return rows.map(toStatement);

}

router.post('/payouts', requireAuth, async (req) => {

const dto = PayoutDto.parse(req.body);

await payouts.create(dto, req.tenant);

});

export async function settle(tx: Tx) {

const acc = await repo.lock(tx.accountId);

if (!acc) throw new NotFound();

const fee = round(tx.amount * FEE_RATE);

await ledger.write({ ...tx, fee });

queue.push('settlement', tx.id);

}

export function reconcile(day: string) {

const rows = db.query(SQL_RECONCILE, [day]);

return rows.map(toStatement);

}

router.post('/payouts', requireAuth, async (req) => {

const dto = PayoutDto.parse(req.body);

await payouts.create(dto, req.tenant);

});

5,000 LOC / day

The verdict

2010s · The legacy stack

Built for a world where humans wrote the code.

Parses syntax, blind to business logic.

Up to 99% false positives.

Per-seat pricing, growth-taxed.

Blind to AI agents.

Runs in CI, after the fact.

Six vendors, six dashboards, six invoices.

Generic advice.

2026 · The CybeDefend way

Agent-time AppSec. One layer. In the prompt.

Understands your code's intent.

95% of the noise filtered.

One subscription, all inclusive.

Lives inside every AI agent.

Cleared before the PR is opened.

Every engine in one graph.

Knows your rules, your tenants, your business.

The product

Shift-left, by default.

The exact path, in four acts.

It maps your code.

VibeDefend indexes your code once as a graph: files, functions, tenants, payment paths. The agent queries the map instead of grepping the diff.

156 files218 edges42 rules

It maps your code.

VibeDefend indexes your code once as a graph: files, functions, tenants, payment paths. The agent queries the map instead of grepping the diff.

156 files218 edges42 rules

It knows your rules before writing.

Your business rules and compliance frameworks load into the agent context. The line comes out compliant on the first try.

tenant scopingaudit-on-writeOWASP · SOC 2 · GDPR

tenant scoping

audit-on-write

soft-delete only

refunds > 500€ → finance.manager

context → agent

✓ tenant scoping

✓ audit-on-write

✓ soft-delete only

✓ refunds > 500€ → finance.manager

It blocks the destructive.

Dangerous actions die at action time, not in a post-mortem. Secrets guarded, protected paths, risky deletions stopped cold.

secret guardprotected pathsrisky deletion

agent · vibedefend guard

It scans everything, and filters the noise before your agent.

The scan runs continuously on every diff. Our AI checks reachability against the graph and dismisses the false positives.

continuous scan110 → 3tokens -92%

What scanners never see

Eight flaws only the agent can catch. Killed before the first save.

Eight examples of the mistakes agents make every day, because they don't have your business logic.

43% of API vulnerabilities exploit business logic, not CVEs (Wallarm, 2026). These eight never trip a scanner. VibeDefend rewrites them in the prompt.

The platform

One layer. Your whole AppSec stack.

The best open-source scanners, enriched with our rules, plus our in-house engines.

The code graph

✓ False positives filtered✓ Compliance tracked✓ Agents monitored✓ Everything centralized

Autopilot

Zero YAML. Your rules, mined from your own code.

“But who writes all these rules?” We do. Autopilot reads your graph and drafts the rules you already follow as candidates. No security engineer required.

01
Walk the graph
It walks your imports, calls, tenants and routes, every boundary you already enforce.
02
Draft candidate rules
Patterns surface as YAML-free rules with name, scope, severity, and code references.
03
Accept · edit · reject
You stay in control. Review per rule, batch-accept the ones you trust, ignore the rest.

CybeDefend Autopilot - Rule candidatesAutopilot0/3

Proposed rule01-Multi-tenancy

Every query on db.orders filters by tenantId

Found in 42 of 43 occurrences across 16 files - confidence 94% - category multi-tenancy

Gap detected-src/handlers/export.ts:17 doesn't comply

Proposed rule02-Authorisation ceiling

Refunds over €500 require role finance.manager

Found in 7 of 8 occurrences across 4 files - confidence 87% - category SoD - authorisation

Gap detected-src/handlers/refund.ts:22 doesn't comply

Proposed rule03-Audit logging

Every payment mutation writes audit.log(actor, amount)

Found in 31 of 34 occurrences across 11 files - confidence 91% - category compliance - audit trail

Gap detected-src/handlers/payouts.ts:54, +2 more

95%

of the noise filtered before your agent

< 100 ms

verdict, inside the loop

270

flaws never written per year (10 devs)

Voices

Voices from teams already shipping with VibeDefend in the loop.

Two early customers, two different stacks, same outcome: more time shipping, fewer alerts to triage.

Olivier, Tech Lead - Koddex — OL
Olivier
Tech Lead

Geoffrey, CTO - Diag n’Grow — GE
Geoffrey
CTO

Lives in the tools you already use.

Claude Code

Cursor

Windsurf

GitHub Copilot

OpenAI Codex

Google GeminiClineContinueZedGoogle Antigravity

Visual Studio Code

JetBrains

GitHub

GitLab

Azure Pipelines

Jenkins

Azure DevOps

Bitbucket

CircleCITeamCityAtlassian Bamboo

Cursor

Windsurf

10 agents · 5 IDEs · 9 CI/CD · native SARIF · verdict < 100 ms

endpoint added · rules applied · 0 finding

Install VibeDefend in 5 seconds.

One command wires every coding agent on your machine to CybeDefend.

Works with all your agents

5 minutes · No card · No flaws, no bill

Find, Fix, Repeat.Secure your Claude CodeCursorWindsurfCopilotCodexClaude Code

Backed by

No one can read the code anymore.

Three years. Three paradigms. Your AppSec stack stayed in 2023.

Copilot whispers. SAST scans nightly.

Copilot whispers. SAST scans nightly.

Agents drive. Reviewers lag.

Agents ship solo. You inherit the debt.

The verdict

Shift-left, by default.

It maps your code.

It maps your code.

It knows your rules before writing.

It blocks the destructive.

It scans everything, and filters the noise before your agent.

Eight flaws only the agent can catch. Killed before the first save.

One layer. Your whole AppSec stack.

Zero YAML. Your rules, mined from your own code.

Voices from teams already shipping with VibeDefend in the loop.

Lives in the tools you already use.

Install VibeDefend in 5 seconds.

Find, Fix, Repeat.Secure your