Verified
Give an agent a webhook-driven inbox with the sender-allowlist and content-filtering patterns that block prompt injection from inbound email.
Inbound EmailAgent SecurityWebhooks
By use case
Top Security & Auditing Skills
Static analysis, vulnerability scanning, k8s hardening, audit workflows, pentest tooling.
12 skills indexed · ranked by composite score · updated August 18, 2026
Top 6 Security skills
- 1.agent-email-inbox—Give an agent a webhook-driven inbox with the sender-allowlist and content-filtering patterns that block prompt injection from inbound email.
Give an agent a webhook-driven inbox with the sender-allowlist and content-filtering patterns that block prompt injection from inbound email.
Real exploits, no false positives. 96.15% exploit success across 50+ vuln types.
- 3.semgrep—Semgrep's own scanning skill: run the industry-standard SAST engine across 30+ languages, and author custom rules for your codebase's patterns.
Semgrep's own scanning skill: run the industry-standard SAST engine across 30+ languages, and author custom rules for your codebase's patterns.
- 4.code-security—A vendor-maintained rule corpus for secure code review — one reference file per vulnerability class, from SQL injection to Terraform misconfiguration.
A vendor-maintained rule corpus for secure code review — one reference file per vulnerability class, from SQL injection to Terraform misconfiguration.
- 5.scan-secrets—GitGuardian's own secret-detection skill — scans history, images and packages, and ships a written remediation doctrine rather than just a list of hits.
GitGuardian's own secret-detection skill — scans history, images and packages, and ships a written remediation doctrine rather than just a list of hits.
Security audits run by a real security firm. CodeQL + Semgrep + audit workflows.
About Security & Auditing
The best agent skills for security and auditing in 2026 pair Claude Code's built-in `security-review` Skill with scanner-backed MCP servers — Snyk, GitHub Advanced Security, AWS — giving the agent live vulnerability data alongside static analysis that catches injection patterns, auth bypass, race conditions, and the OWASP Top 10. Security & auditing Skills equip agents to find the vulnerabilities a human reviewer would miss in a hurried scan — and just as importantly, to document and triage them clearly. The category covers static analysis, dependency vulnerability scanning, Kubernetes hardening, IaC misconfiguration audits, secret-scanning, threat modeling, pentest tooling, and the security-review Skill that runs a structured pre-merge sweep on the current diff.
Common workflows include screening a PR for injection patterns, scanning a new repo for hardcoded credentials, generating a STRIDE threat model from an architecture diagram, hardening a Helm chart, auditing IAM policies for excessive permissions, and producing a findings report with severity ratings. Several Skills here pair with MCP servers — Snyk for SAST, GitHub Advanced Security for secret-scanning, AWS for IAM audits — so the agent has live access to scanner results, not just static rule lists.
Security engineers, platform teams, and CTOs at fast-shipping startups use these. Composite scoring weights provenance (Trail of Bits, GitHub Security Lab, recognized security orgs) heavily, plus install count from production teams. We do not rank tools intended for offensive use outside authorized contexts.
Ranked by score
Best Security Skills
Skills that do security well — ranked transparently.
Verified
Real exploits, no false positives. 96.15% exploit success across 50+ vuln types.
PentestExploitationAction-taking
Verified
Semgrep's own scanning skill: run the industry-standard SAST engine across 30+ languages, and author custom rules for your codebase's patterns.
SASTSemgrepStatic analysis
Verified
A vendor-maintained rule corpus for secure code review — one reference file per vulnerability class, from SQL injection to Terraform misconfiguration.
Secure codingOWASPCode review
Verified
GitGuardian's own secret-detection skill — scans history, images and packages, and ships a written remediation doctrine rather than just a list of hits.
Secret scanningggshieldPre-commit
Verified
Security audits run by a real security firm. CodeQL + Semgrep + audit workflows.
CodeQLSemgrepAudit
Verified
OWASP-published review, SCA, secrets and threat-modelling skills — the most citable provenance available for security review vocabulary.
OWASPThreat modelingASVS
Verified
The remediation half of security work: scan, fix, validate the fix, open the PR. Batch mode handles a whole backlog of CVEs in one pass.
SnykSCARemediation
Code
Low1 min
Official
Structured PR reviews with severity-tagged findings — bugs, security, perf, style.
ReviewSecurityPR
Code
Low0 min
Community
Kubernetes hardening by the book. NetworkPolicies, RBAC, OPA, service mesh.
KubernetesRBACOPA
Community
ffuf web fuzzing for authorized pentests. Common modes, payloads, and gotchas.
ffufPentestFuzzing
FAQ
Frequently asked
What does the security-review Skill check for?
Injection (SQL, command, XSS), auth bypass, race conditions, missing input validation, hardcoded secrets, insecure deserialization, SSRF, and the OWASP Top 10. It runs on the current branch's diff.
Are these Skills safe for offensive security work?
We rank Skills for defensive security, authorized pentesting, CTF, and security research. Skills focused on destructive techniques, DoS, mass targeting or detection evasion are not listed.
Do I need an MCP server for security Skills?
Some pair with Snyk, GitHub Advanced Security, AWS, or PagerDuty MCP servers for live data. Pure rule-based scanners run standalone inside the agent.
How do these Skills handle false positives?
The best Skills require a justification before flagging — they explain why a pattern matched and what the exploit would look like. This keeps the noise floor low enough to act on findings.
Can a Skill replace a real security audit?
No. It is a first pass that catches mechanical issues — the same things a senior engineer would catch with hours of careful reading. Real audits cover architecture, key management, and business logic that no Skill can model.
Go deeper
Guides and comparisons for Security
Ranked recommendations with the reasoning, per-agent compatibility cuts, and head-to-head verdicts.
- Best agent Skills for security & auditing →
The best agent Skills for security review and vulnerability detection — firm-grade static analysis (CodeQL, Semgrep), Kubernetes hardening, and real-exploit validation.
- semgrep vs trail-of-bits →
semgrep runs a real static-analysis engine and writes custom rules; trail-of-bits brings a security firm's review method to a diff. Findings versus judgement.
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