Gecko scans codebases and reviews pull requests for exploitable vulnerabilities; Aevral adds a reading focused on the authorization and business-logic questions: a live opt-in PR review on the pull request, and a whole-repo scan at rest.
| Row | Gecko Security | Aevral |
|---|---|---|
| Question it answers | Where are the exploitable attack paths in this codebase? | Who has access to what, and does this change widen it? |
| Stated job | AI-native engine with a semantic graph, threat modelling, natural-language rules, cross-repo contextual scanning, and a pull-request review bot with one-click autofix, per Gecko's site | Authorization, IDOR, and business-logic reading of the PR diff, and of the whole-repo snapshot at rest |
| Where it runs | CI/CD and the PR/MR bot; cloud, with Enterprise on-prem, self-hosted, and private-cloud options, per Gecko's site | GitHub Check and inline comments, opt-in per organization; scans run from the console on a chosen SHA |
| Unit of work | Findings with fixes; Free tier 10 scans, Pro USD 100/month, per Gecko's pricing | Up to two findings per opt-in review, grounded on the added lines; scan findings come as leads with evidence |
| Complementary? | Yes | Yes |
Gecko describes an AI-native engine that builds a semantic graph of the application and surfaces multi-step and business-logic vulnerabilities, with threat modelling, natural-language rules, contextual scanning across repositories and microservices, and a pull-request review bot with one-click autofix, per Gecko's site. Its pricing starts free with 10 scans; Pro is USD 100 per month; Enterprise adds unlimited scanning with on-prem and self-hosted options. Aevral is built for a reading of its own: does a change widen who has access to what, an authorization, IDOR, or business-logic access-control issue. Good code and safe access are separate properties; a change can read well while moving the other.
Gecko publishes business-logic vulnerabilities and cross-service attack paths in its scope, and its review bot reads pull requests; Aevral's single job is the access reading, at rest and on the pull request. With Aevral's PR review, live and opt-in, both run on the same pull request; Aevral also reads the repository snapshot at rest as a whole-repo scan. Gecko's docs describe one-click autofix; Aevral does not patch: the fix is a prompt you hand to the coding agent you already use. The framing stays complementary: each tool does the job it publishes, and this page makes no claim about results on your pull requests.
Gecko
Gecko Security analyzes code, logic, and infrastructure to find exploitable vulnerabilities and give developers fixes, per Gecko's site. It builds a compiler-accurate graph of the codebase, scales threat modelling, takes natural-language security rules, and scans across multiple repositories and microservices for issues that surface between trust boundaries, with CI/CD scanning and a pull-request review bot with one-click autofix. Pricing starts free with 10 scans; Pro is USD 100 per month; Enterprise adds unlimited scanning with on-prem, self-hosted, and private-cloud options.
Aevral
Aevral is a security researcher for your code, built to read authorization, IDOR, and business-logic access control with cross-file context. The whole-repo scan is live and self-serve; PR review is live and opt-in per organization; paid PR plans are live in the console. A finding is a lead with evidence, and a human decides.
This change moves the admin gate from a list of admin prefixes to a list of public prefixes so new admin endpoints ship without edits. The smoke tests cover the seeded admin and public routes, and every page still renders.
const PUBLIC_ROUTES = ["/", "/login", "/pricing"] const gate = (p: string) => ADMIN_ROUTES.some((r) => p.startsWith(r)) const gate = (p: string) => PUBLIC_PREFIXES.every((r) => !p.startsWith(r)) return gate(req.path) ? adminLayout(req) : redirect("/login")Every seeded route resolves and the smoke tests pass. What changed is the default: the gate moved from naming what is admin to naming what is public, so any route outside the public prefixes, a new admin endpoint or an unrouted prefix, now renders the admin layout for whoever reaches it. Aevral is built to read a diff for the default that flipped, not the list that moved.
Keep Gecko for semantic cross-service scanning and its PR bot; run Aevral for the authorization and business-logic reading of the same pull requests and the whole-repo snapshot, opt-in per organization.
No. Gecko does its stated job and keeps doing it. Aevral runs alongside it with its own reading: authorization, IDOR, and business-logic access control across the repository, and across every pull request through its opt-in PR review.
No. This page states each product's job and shows one worked example of Aevral's own reading. Results on your code depend on your code; evaluations belong to you.
Aevral is self-serve: install the GitHub App and log in to the console. The waitlist form is a launch-updates channel; joining does not reserve a price, access, or a contract.
More comparisons
The shorter version, at a glance: Gecko Security and Aevral on the works-alongside page.
Primary sources: Gecko Security; Gecko Security FAQ; Aevral PR security review; Aevral whole-repo scan.
One GitHub App. A report with evidence. A prompt for the agent you already use.