Verified MCP Server Directory

Sbir

SBIR MCP — wraps the SBIR.gov public API (free, no auth)

SpamTitan

MCP server for SpamTitan email security — quarantine, allow/block lists, and policy management.

io.github.titus-civic/mcp-gateway

Identity, authorization, audit trails, and revocable permissions for AI agents accessing MCP tools.

Zendesk

Zendesk MCP Pack — tickets, users, organizations via OAuth.

Markdown Vault MCP

Markdown vault MCP server with FTS5 + semantic search and frontmatter indexing

stackexchange

StackExchange MCP — wraps the StackExchange API v2.3 (free, no auth required for read)

io.github.temurkhan13/openclaw-skill-vetter-mcp

MCP server for security-vetting third-party AI agent extensions: 41 detection rules.

Audits other MCP servers for security risks. Returns safe / caution / unsafe / inconclusive.

io.github.vmoranv/jshookmcp

MCP server for JavaScript analysis, security auditing, browser automation and hooks

MCPAmpel - MCP Security Scanner

Scan installed MCP servers for security vulnerabilities with 16 detection engines.

io.github.mishrasanjeev/grantex

OAuth 2.0 for AI agents — scoped delegation tokens, audit trails, and revocation.

MCP OpenClaw Extensions

138-tool MCP server for AI agent firms: security, A2A, Hebbian memory, fleet mgmt

archive

Archive MCP — wraps the Internet Archive APIs (free, no auth)

sunrisesunset

Sunrise-Sunset MCP — wraps the sunrisesunset.io API (free, no auth)

io.github.RCOLKITT/vaspera-hardening

Enterprise certification for codebases with multi-agent security, reliability, and quality audits

dev.fentz.envcp/envcp

Encrypted environment variable vault with AI access policies, keeping secrets safe from AI agents.

io.github.sinewaveai/agent-security-scanner-mcp

Security layer for AI agents: blocks prompt injection, detects fake packages, scans vulnerabilities.

KeyCloak MCP

MCP server for KeyCloak Admin REST API via Service Account

Anilist

AniList MCP — wraps AniList GraphQL API (free, no auth)

uiule

Bible MCP — wraps the Bible API (free, no auth)

dnd5e

D&D 5e MCP — wraps the D&D 5th Edition API (free, no auth)

guif

GBIF MCP — wraps the Global Biodiversity Information Facility API v1 (free, no auth)

io.github.afable702/vault-mcp-tools

Complete Obsidian vault MCP server. 35 tools: notes, search, graph, tags, canvas.

httpcat

HTTP Cat MCP — wraps http.cat (free, no auth)