authserver: OAuth 2.1 Authorization Server for the Model Context Protocol (MCP)

by AuthPlane · MCP Server · ★ 81

Last updated: · Indexed by AgentSkillsHub · Auto-synced every 8h

Security audit verdict: SAFE · quality 67/100

None of the 42 rules matched — no credential harvesting, no data exfiltration, no curl-pipe-shell installer. Scanned against 42 published rules built on the SlowMist agent-security taxonomy, refreshed every 8 hours.

The quality score combines nine heuristic checks of the repo and its README: completeness, clarity, specificity, examples, structure, agent readiness, step-by-step content, instruction quality and security notes. It rates how well the project explains itself to an agent, not the code.

agent-identityagent-identity-authagent-identity-managementauthorizationauthorization-servercibacimddpopjwtmcp

Quick Facts

Stars81
Forks6
LanguageGo
CategoryMCP Server
LicenseAGPL-3.0
Quality Score67/100
Last Updated2026-10-14
Created2026-06-11
Platformscli, go, mcp
Est. Tokens~18k

About authserver

Authplane The self-hosted authorization server for the Model Context Protocol. One Go binary. AGPL-3.0. MCP Authorization spec 2025-11-25, end-to-end. AI coding agents: read AGENTS.md first — it has the deterministic workflow for adding Authplane to an existing MCP server, the SDK pins per stack, and the three byte-for-byte rules that cause 90% of failures.

Compatible Skills

These tools work well together with authserver for enhanced workflows:

  • hasmcp-ce — semantic(0.41)+rare_topics+same_lang+similar_pop+shared_platform (58%)
  • llm-agent-audit — semantic(0.41)+complementary+rare_topics+similar_pop (54%)

authserver alternative? Top 6 similar tools

Looking for a authserver alternative? If you're comparing authserver with other mcp server tools, these 6 projects are the closest alternatives on Agent Skills Hub — ranked by topic overlap, star count, and community traction.

  • hasmcp-ce by hasmcp · ⭐ 63

    HasMCP Community Edition

  • MCP-Dandan by 82ch · ⭐ 67

    MCP Security Solution for Agentic AI — real-time proxying, behavior analysis, and malicious tool detection

  • peta-core by dunialabs · ⭐ 59

    The Control Plane for MCP — secure vault, managed runtime, audit trail, and policy-based approvals.

  • MCP-Defender by MCP-Defender · ⭐ 256

    Desktop app that automatically scans and blocks malicious MCP traffic in AI apps like Cursor, Claude, VS Code

  • Wazuh-MCP-Server by gensecaihq · ⭐ 246

    Production-grade MCP server for Wazuh SIEM — 55 security tools for alert triage, threat hunting, vulnerability

  • Reversecore_MCP by sjkim1127 · ⭐ 216

    A security-first MCP server that empowers AI agents to perform automated reverse engineering, malware analysis

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How this security grade is produced

Grades come from a rule-based scan built on the SlowMist agent-security taxonomy: 42 published rules, covering credential harvesting, data exfiltration, curl | sh installers and more. It is a first-layer scan, not a manual audit — we say so rather than overstate it.

The scale of the problem is documented independently: Liu et al. (2026), in a study of 31,132 agent skills, report that 26.1% contain security vulnerabilities. Our own full-catalog census is published as a citable open dataset.

Sources & who's responsible:

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