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 85 to 95% false positives, the level NIST SAMATE reports for pattern-based scanning. We run at agent-time on the diff your agent is about to ship, with reachability + framework awareness. Same engine, different surface, up to 90% less 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.

Try free

Find, Fix, Repeat.Secure your

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

Install free5 min · no card · No flaws, no bill

5/5

Claude CodeVibeDefend

Add an endpoint to update user profile

Partners, programs and investors

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.

Suggestion era

Copilot whispers. SAST scans nightly.

Developers accept suggestions faster than reviewers can read them. AppSec scans 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

}

2023

Suggestion era

Copilot whispers. SAST scans nightly.

Developers accept suggestions faster than reviewers can read them. AppSec scans code no human wrote. Slow, but still auditable.

AI outputlines / dayReviewhumanGatenightly CI

editor · checkout.ts

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

if (total > 0) {

applyDiscount(cart, coupon);tab

}

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 it writes.

Your business rules and compliance frameworks load into the agent's 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 fail at action time, not in a post-mortem. Secrets guarded, protected paths enforced, risky deletions stopped cold.

secret guardprotected pathsrisky deletion

agent · vibedefend guard

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

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. Stopped before the first save.

Eight examples of 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 entire 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.