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Gecko runs a Claude-powered agent that reads your code like a security engineer. It follows untrusted input from where it enters your app to where it does damage, and reports an issue only when it can prove the path is exploitable.

What a scan produces

Findings

Each with the full source-to-sink call chain, a CVSS severity, a proof of concept, and a ready-to-apply patch.

Repository wiki

An AI-written map of your app: architecture, routing, and security model.

Endpoint map

The HTTP attack surface Gecko discovered in your code.

PR reviews & fixes

On pull requests, a security review summary and one-click fixes.

The scan pipeline

A deep scan maps your codebase so the agent understands your app, focuses on the security-sensitive code, then traces each path from source to sink, reporting only proven, high-confidence findings.

Supported languages

Gecko follows data flow across files using compiler-accurate analysis where available, and general parsing support everywhere else.
SupportLanguages
Compiler-accurate (precise cross-file analysis)TypeScript · JavaScript · Python · Go · Java · Scala · C# · Rust
General supportRuby · PHP · C · Swift · and more