Best AI Agent Skills for Secret Detection in 2026

Discover tools that detect leaked secrets, API keys, and credentials in your codebase before they cause security incidents.

🔍 Browse 10 secret detection tools ⭐ 4.3k total stars 🔄 Refreshed every 8h
Quick Pick — If you only pick one, go with authsome ★ 52 — Credential gateway for AI agents. Log in once via Oauth2 or API Key. Every agent

The Complete Guide to Secret Detection Tools (2026)

What Are Secret Detection Tools?

Secret Detection tools are AI-powered software designed to help developers and teams tackle secret detection-related tasks more efficiently. These tools are typically published as open-source projects on GitHub and can be integrated into existing workflows via MCP (Model Context Protocol), Claude Skills, or standalone agent frameworks. On Agent Skills Hub, we index 10 quality-scored secret detection tools across languages including Python, TypeScript, Go.

Why Use Secret Detection Tools?

In 2026, the AI agent ecosystem is maturing rapidly. Secret Detection tools can significantly boost development efficiency by automating repetitive tasks, reducing human error, and providing intelligent suggestions. The top 3 tools — authsome, onecli, spool — have earned an average of 428 GitHub stars, reflecting strong community validation. 8 of the listed tools come with clear open-source licenses, ensuring freedom to use and modify.

How to Choose the Best Secret Detection Tool?

When choosing a secret detection tool, consider these factors: 1) Community activity — GitHub stars and recent commit frequency indicate reliability; 2) Integration method — check if it supports MCP, Claude, or your preferred agent framework; 3) Language compatibility — the most common language in this list is Python; 4) Quality score — Agent Skills Hub's composite score evaluates code quality, documentation completeness, and maintenance activity. Our recommendation: start with authsome — it ranks highest in both star count and quality score.

Top 10 Secret Detection Tools

1 authsome by agentrhq
★ 52 Python MCP Server

Credential gateway for AI agents. Log in once via Oauth2 or API Key. Every agent stays authenticated — headless, no SaaS, agents never see your credentials.

View Details → GitHub →
2 onecli by onecli
★ 2.4k TypeScript MCP Server

Open-source credential gateway with a built-in vault. give your AI agents access to services without exposing keys.

View Details → GitHub →
3 spool by paperboytm
★ 558 TypeScript MCP Server

Your local AI session library. Browse, pin, and ⌘K-search every Claude Code, Codex, Gemini & OpenCode session — and let the built-in scanner catch leaked secrets. Local-first, nothing leaves your machine.

Quick Start: Or grab the prebuilt DMG (macOS arm64) / AppImage (Linux x8664) directly from the Releases page. Or build from source:
```bash
curl -fsSL https://spool.pro/install.sh | bash
```
View Details → GitHub →
4 agentfw by openguardrails
★ 360 TypeScript MCP Server

The local firewall for AI agents — keep your secrets off the model, the API relay, and the supply chain. Local credential masking, per-route model routing, and security detectors on the wire. Free & fully open source.

View Details → GitHub →
5 kontext-cli by kontext-security
★ 207 Go MCP Server

Open-source Runtime Security for tool-using AI agents providing permissions, credentials, policy enforcement, and audit trails.

View Details → GitHub →
6 prismor by PrismorSec
★ 214 Python MCP Server

Prismor (formerly Immunity Agent) - runtime security for Claude Code, Cursor, Windsurf & other AI coding agents. PreToolUse hooks that block dangerous commands, prevent secret leaks, stop prompt injection, and gate risky package installs.

View Details → GitHub →
7 claw-wrap by dedene
★ 136 Go Codex Skill

A secure credential proxy for CLI tools. Executes tools with secrets on behalf of sandboxed processes - credentials never enter the sandbox.

View Details → GitHub →
8 agentsecrets by The-17
★ 142 Go Codex Skill

Zero-knowledge secrets infrastructure built for AI agents to operate, not just consume.

View Details → GitHub →
9 ai_osint by 7WaySecurity
★ 95 MCP Server

🤖 Curated AI OSINT resources — Google dorks, Shodan queries, GitHub dorks, and techniques to discover exposed LLM endpoints, leaked AI API keys, misconfigured vector databases, and unprotected AI agents

View Details → GitHub →
10 openclaw-shield by knostic
★ 85 TypeScript Codex Skill

Security plugin for OpenClaw agents - prevents secret leaks, PII exposure, and destructive command execution

View Details → GitHub →

Comparison

Tool Stars Language License Score
authsome ★ 52 Python MIT 40
onecli ★ 2.4k TypeScript Apache-2.0 51
spool ★ 558 TypeScript 38
agentfw ★ 360 TypeScript MIT 43
kontext-cli ★ 207 Go MIT 48
prismor ★ 214 Python Apache-2.0 45
claw-wrap ★ 136 Go MIT 48
agentsecrets ★ 142 Go MIT 46
ai_osint ★ 95 47
openclaw-shield ★ 85 TypeScript Apache-2.0 42

Related Categories

Frequently Asked Questions

What are the best secret detection tools in 2026?

The top secret detection tools in 2026 are authsome, onecli, spool. Agent Skills Hub ranks 10 options by GitHub stars, quality score (6 dimensions including completeness, examples, and agent readiness), and recent activity. The list is rebuilt every 8 hours from live GitHub data.

How do I choose between authsome and onecli?

authsome (52 stars) is the most adopted choice for general secret detection workflows, written in Python. onecli (2.4k stars) is a strong alternative and uses TypeScript instead. Pick by your existing stack: match the language and runtime your team already uses to minimize integration cost. If unsure, start with authsome — it has the deepest community and the most examples online.

When should I NOT use a secret detection tool?

Avoid pre-built secret detection tools when (1) your use case requires deep customization that the tool's plugin system doesn't support, (2) you have strict compliance requirements that ban third-party dependencies, (3) the tool's maintenance is inactive (last commit >6 months ago), or (4) your data volume is small enough that a 50-line custom script is cheaper than learning the tool. For most production workflows above 100 requests/day, the time savings from a maintained tool outweigh the customization loss.

What's the difference between secret detection and security auditing?

Secret Detection focuses specifically on discover tools that detect leaked secrets, api keys, and credentials in your codebase before they cause security incidents. Security Auditing is a related but distinct category — see https://agentskillshub.top/best/security-audit/ for those tools. The two often appear in the same agent pipeline but solve different problems: choose secret detection when your primary goal is the specific task, and security auditing when the workflow is broader.

Is authsome better than building it yourself?

For most teams, yes. authsome has 52 stars worth of community testing, handles edge cases you haven't thought of, and ships with documentation. Build your own only when (1) your requirements are deeply non-standard, (2) you have a security/compliance reason to avoid OSS dependencies, or (3) the maintenance burden is small enough (<200 lines of code) that you'll save time long-term. The break-even point is usually around 2-3 weeks of dev time saved.

Are these secret detection tools free to use?

Most secret detection tools listed are open source under permissive licenses (MIT, Apache 2.0). A handful offer paid managed/cloud versions on top of free self-hosted core. Always check the LICENSE file on each tool's GitHub repository before commercial use — some use AGPL or non-commercial restrictions that may not fit your deployment model.

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