Hyrax vs Semgrep: scanner findings vs verified fixes

What Semgrep does and what Hyrax does#

Semgrep is a code security platform that scans source code and dependencies through static application security testing, software composition analysis, and secret detection. Its configurable rules identify known patterns, while cross-file context and triage features help reduce false positives. A public rule registry, detailed documentation, and community channels support rule development and tuning. Semgrep reports findings for developers to assess and remediate.

Hyrax provides continuous code remediation through code review and fixing. It reviews code for security, correctness, maintainability, performance, architecture, and operations issues. Hyrax finds an issue, writes and verifies a fix, submits the fix as a pull request, and closes the associated ticket. An engineer reviews and merges every pull request, so Hyrax does not merge code automatically.

Semgrep vs Hyrax at a glance#

Semgrep detects security issues through static analysis. Hyrax performs code review and fixing, then submits verified fixes for engineer approval.

How this comparison was scored#

The comparison uses four dimensions that determine how each tool fits into the development workflow.

• Detection approach. The method and scope show which issues each tool can find.
• False positive handling. Noise control affects how much time engineers spend validating findings.
• CI/CD integration. Pipeline behavior shows where each tool runs and what happens after detection.
• Fix generation and PR automation. Code review, verified fixes, and merge control determine how findings become reviewed code changes.

Detection approach#

Semgrep uses deterministic rule matching to detect known issue patterns. A finding appears when code or related metadata matches configured logic. Without a rule or check that represents a defect, Semgrep has no basis for reporting it. Rule matching gives security teams predictable results, tunable checks, and access to community-maintained rules.

Semgrep focuses on several security domains. Static application security testing finds vulnerable code patterns. Software composition analysis checks dependencies, while secret detection identifies exposed credentials. Semgrep applies specialized detection methods within each area and produces findings for the engineering or security backlog.

Hyrax focuses on continuous code review and fixing. Hyrax audits code across security, correctness, maintainability, performance, architecture, and operations. Each accepted issue enters a remediation loop that writes a verified fix and submits it as a pull request. An engineer reviews and merges every pull request.

Hyrax does not replace Semgrep's dedicated security scanning. When Semgrep reports a finding, Hyrax can write the fix, ship the pull request, and close the associated ticket. Hyrax also finds issues through its broader audit, including design and operational concerns that fall outside Semgrep's security scope. A combined deployment preserves Semgrep's specialized detection while adding automated remediation.

False positive handling#

Semgrep controls false positives at the detection layer. Teams can tune rules to match code patterns, exclude irrelevant paths, and adjust which findings reach developers. Poorly tuned rules create noise, while narrow rules may miss code that deserves review.

Semgrep's Pro Engine adds cross-file analysis, which gives rules more context than single-file matching. Semgrep also reports that Assistant uses contextual analysis to triage findings and suggest which alerts developers should prioritize. These vendor-reported capabilities can reduce manual review, but the team still decides whether each alert requires remediation.

Hyrax controls noise at the remediation layer. Its code review and fixing workflow verifies a proposed change before submitting the fix as a pull request. Only a fix that passes verification proceeds to engineer review, and Hyrax does not merge the PR automatically.

The tools therefore establish confidence at different points. Semgrep improves confidence that an alert deserves attention. Hyrax gives the engineer a verified code change to inspect, test, and merge.

CI/CD integration depth#

Semgrep runs during CI and reports findings before code reaches production. Its CLI supports pipelines built with GitHub, GitLab, Bitbucket, Jenkins, CircleCI, Azure, and Buildkite. Semgrep can run in a non-blocking, report-only mode, which lets fast static scans inform developers without stopping every build.

Hyrax sits later in the delivery flow. Hyrax reviews the code, writes verified fixes, and submits each fix as a pull request. An engineer reviews and merges the PR, so Hyrax does not apply changes directly or replace merge controls.

A combined pipeline keeps Semgrep in the scan step and uses Hyrax for fixing. Semgrep reports the issue, while Hyrax creates the code change and moves it through the existing pull request process. The tools therefore serve different pipeline stages rather than competing for the same CI job.

Fix generation and PR automation#

Semgrep produces security findings, while Hyrax turns issues into reviewed code changes. Semgrep rules can attach messages and rule-defined remediation guidance to matches. A finding does not by itself apply a context-specific patch or submit a pull request. An engineer or remediation tool must still change the code.

Hyrax uses autonomous code review and fixing to carry an issue through remediation. Hyrax writes a code change and verifies the fix before submitting a pull request. An engineer reviews and merges every pull request because Hyrax does not auto-merge. After the accepted fix ships, Hyrax closes the related ticket.

The difference in output explains why teams often combine the products. Semgrep remains the detection layer for SAST, software dependency risks, and exposed secrets. Hyrax handles the remediation work and delivers fixes through the existing pull request review model. Adding Hyrax preserves Semgrep's rule coverage while reducing the manual work between a finding and a merged fix.

Should a team replace Semgrep with Hyrax or run both#

Teams that already use Semgrep should usually run both products. Semgrep retains its role as the dedicated SAST, SCA, and secret detection layer. Hyrax adds code review and fixing by writing verified patches, submitting pull requests, and closing the related tickets. Replacing Semgrep would remove dedicated scanning capabilities that Hyrax does not aim to duplicate.

Hyrax alone fits a narrower profile. A team without an existing SAST tool may start with Hyrax when the immediate need covers broad code auditing and remediation across security, correctness, maintainability, performance, architecture, and operations. A team that needs dedicated dependency analysis, secret detection, or rule-based security checks should still add a scanner such as Semgrep.

The combined workflow preserves each product's strengths. Semgrep flags the issue through the existing CI/CD scan. Hyrax writes and verifies the fix, then submits a pull request. An engineer reviews and merges the change.

FAQs#

Does Hyrax duplicate Semgrep's scanning?

Semgrep scans code for security issues through static analysis, software composition analysis, and secret detection. Hyrax performs code review across six domains and writes verified fixes for its own findings or Semgrep findings. Running both preserves Semgrep's security detection while adding automated fixing.

Does Hyrax need Semgrep to work?

Hyrax runs its own audits across security, correctness, maintainability, performance, architecture, and operations. Hyrax can find issues and submit fixes without Semgrep. Semgrep remains useful when the codebase requires dedicated security scanning.

Who controls PR review and merging?

Pull request review gives an engineer control over every proposed change. Hyrax submits verified fixes as pull requests and does not merge them automatically. The engineer reviews the code, requests changes when needed, and decides whether to merge.

Ship clean code#

Code review creates value when findings become reviewed fixes. Hyrax writes those fixes and submits each one as a pull request for engineer approval. Hyrax makes your code better.