Agentsec

agentsec

agentsec is a security auditing CLI for AI agent skills. It scans every skill installed in a project against the OWASP Agentic Skills Top 10 and reports vulnerabilities, misconfigurations, and governance gaps.

When to Use

Use agentsec when the user asks to:

• Audit, scan, or check agent skills for security issues
• Verify installed skills are safe before running them
• Check OWASP compliance of an agent setup
• Gate a CI/CD pipeline on skill security
• Generate a security report for stakeholders

Quick Start

The fastest path to a result — no install, no flags:

npx agentsec

This scans every default skills directory on the machine — grouped by platform — plus any ./skills folder in the current project (up to two levels deep), and audits each installed skill against the OWASP Agentic Skills Top 10. Always try this first.

Auto-discovery locations

agentsec is agent-platform agnostic — every platform listed below ships skills in the agentskills.io SKILL.md format and is auto-discovered.

| Platform | Paths scanned | | ---------------------- | ------------------------------------------------------------------------------------------------------------------------- | | Claude Code | ~/.claude/skills, ./.claude/skills, ~/.claude/plugins/*/skills/*, ~/.claude/commands, ./.claude/commands | | OpenClaw / ClawHub | ~/.openclaw/workspace/skills, ~/.openclaw/workspace-*/skills (profiles via OPENCLAW_PROFILE), ~/.openclaw/skills | | Codex / skills.sh | ~/.agents/skills, ./.agents/skills, ../.agents/skills, /etc/codex/skills | | Hermes | ~/.hermes/skills, ~/.hermes/skills/* (bundled categories), ./.hermes/skills | | Other (generic) | Any skills/ directory found within the current project, up to two levels deep |

Core Commands

Every workflow starts from one of four commands. Run them with npx agentsec — no install needed.

# Full audit (scan + policy evaluation). Default command.
npx agentsec

# Scan only (no policy evaluation)
npx agentsec scan

# Generate a report from a previously saved audit JSON
npx agentsec report audit.json

# Manage and inspect policy presets
npx agentsec policy list

Installation

npx agentsec needs no install. For repeated use, install globally:

# bun (recommended)
bun add -g agentsec

# npm
npm install -g agentsec

# pnpm
pnpm add -g agentsec

# yarn
yarn global add agentsec

Then drop the npx prefix:

agentsec
agentsec scan --path ./my-skills

Flags

All flags work with any command.

| Flag | Short | Values | Default | Purpose | | ------------ | ----- | ------------------------------- | ---------- | -------------------------------------------------------- | | --format | -f | text, json, sarif, html | text | Output format | | --output | -o | path | stdout | Write report to file | | --policy | -p | preset name or path | default | Apply a policy preset | | --platform | | openclaw, claude, codex, hermes | auto | Narrow to one agent platform | | --path | | path | auto | Custom skill directory to scan | | --profile | | default, web3, strict | default | Rule profile. default auto-detects Web3 skills; web3 forces the annex on every skill | | --verbose | -v | | off | Show detailed findings | | --no-color | | | off | Disable colored output | | --help | -h | | | Show help | | --version | -V | | | Print version |

Common Recipes

Show detailed findings and remediation

npx agentsec --verbose

Scan a specific directory

npx agentsec scan --path ./my-skills

Target a specific agent platform

npx agentsec --platform claude
npx agentsec --platform codex
npx agentsec --platform hermes
npx agentsec --platform openclaw

Audit with a strict policy and save JSON

npx agentsec --policy strict --format json --output audit.json

Generate an HTML report for stakeholders

npx agentsec --format html --output report.html

Generate a SARIF report for IDE / code-scanning integration

npx agentsec --format sarif --output report.sarif

List available policy presets

npx agentsec policy list

Inspect the rules in a preset

npx agentsec policy show strict

Validate a custom policy config file

npx agentsec policy validate ./my-policy.json

Replay a previous audit as an HTML report

npx agentsec report audit.json --format html --output report.html

Policy Presets

| Name | Use Case | | -------------------- | -------------------------------------------------------------------- | | default | Balanced policy. Blocks critical findings. | | strict | Enterprise-grade. Blocks high and critical findings, enforces tests. | | permissive | Lenient. Only blocks critical CVEs. Good for development. | | owasp-agent-top-10 | Built directly from the OWASP Agentic Skills Top 10. |

Configuration File

agentsec auto-loads .agentsecrc, .agentsecrc.json, or agentsec.config.json from the current directory (or any parent):

{
  "format": "text",
  "output": null,
  "policy": "strict",
  "verbose": false
}

CLI flags always override config file values. Omit "platform" and "path" to keep the default auto-discovery behavior — agentsec will scan every known platform's default locations.

OWASP Agentic Skills Top 10

Every audit checks all ten risk categories:

| ID | Risk | | ----- | ------------------------------- | | AST01 | Malicious Skills | | AST02 | Supply Chain Compromise | | AST03 | Over-Privileged Skills | | AST04 | Insecure Metadata | | AST05 | Untrusted External Instructions | | AST06 | Weak Isolation | | AST07 | Update Drift | | AST08 | Poor Scanning | | AST09 | No Governance | | AST10 | Cross-Platform Reuse |

AST-10 Web3 Annex (auto-detected)

Web3-touching skills are detected automatically and audited against twelve additional rules — no flag required. A skill is detected as Web3 when its manifest declares a web3: block, when its source imports a Web3 client library (viem, ethers, web3, wagmi, @solana/web3.js, @coinbase/onchainkit, @privy-io, @biconomy, @zerodev), when it references a Web3 RPC method (eth_*, wallet_*, personal_sign, signTypedData), or when it ships a .sol file. Detected skills are tagged [Web3] in the output:

✔ scoped-trader v1.4.0  [Web3]  C (62)
✔ helpful-summarizer v1.2.0     A (95)

--profile web3 is still available — it forces the annex onto every skill regardless of detection (useful for cross-team CI consistency):

npx agentsec audit --profile web3 --path ./my-skills

| ID | Risk | | ------- | ----------------------------------------------- | | AST-W01 | Unbounded Signing Authority | | AST-W02 | Implicit Permit / Permit2 Signature Capture | | AST-W03 | Delegation Hijack via EIP-7702 | | AST-W04 | Blind / Opaque Signing Surface | | AST-W05 | RPC Endpoint Substitution & Mempool Leakage | | AST-W06 | Unverified Contract Call Targets | | AST-W07 | Cross-Chain / Bridge Action Replay | | AST-W08 | MCP Chain-Tool Drift / Capability Smuggling | | AST-W09 | Session-Key / Permission-Caveat Erosion | | AST-W10 | Slippage / Oracle Manipulation by Agent Loop | | AST-W11 | Key Material in Agent Memory / Logs | | AST-W12 | No On-Chain Action Audit / Kill-Switch |

Skills can declare a web3 block in their manifest (chains, signers, policy caps, session-key scopes, MCP server pinning, audit sink, kill-switch) so the annex can verify scoping without flagging well-bounded skills. See docs/plans/ast10-web3-annex-rules.md for full per-rule detection signals.

Understanding the Output

Default output is compact: each skill shows its grade and score, followed by a one-line finding summary and a PASS/WARN/FAIL status.

✔ Found 6 skills

✔ fetch-data     v1.0.0  D (42)
✔ deploy-helper  v2.3.0  C (68)
✔ code-review    v1.1.0  A (95)

6 skills scanned  •  avg score 78  •  4 certified
Findings: 2 critical, 1 high, 2 medium

⚠ WARN  3 high/critical finding(s) detected

Use --verbose for score breakdowns, rule IDs, file/line locations, and remediation for each finding.

Exit Codes

• 0 — audit passed the active policy
• 1 — policy violation or fatal error

Use the exit code directly to gate CI pipelines — no special flag required:

npx agentsec --policy strict || exit 1

Tips

• Start with npx agentsec — no install, no flags. Iterate from there.
• Add --verbose whenever you need to act on specific findings.
• Pipe --format json into jq or a custom script for programmatic handling.
• strict is the most common preset for production repositories.
• Browse the agent skills ecosystem at skills.sh.

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: semiotic-ai
• Source: semiotic-ai/agentsec
• License: MIT
• Homepage: https://agentsec.sh

Install and usage instructions live in the source repository linked above.