MCP Server Directory

Book Search (Open Library) com.invokera/book-search

Search books and authors across Open Library, the Internet Archive open catalog.

Authorization answers from real policy code: evaluate Rego locally, or ask an AuthZEN 1.0 PDP.

mlab.sh sh.mlab/mcp

Threat intelligence: enrich IOCs (IP, domain, URL, hash), search CVEs and actors, scan SBOMs.

Atisbo Documentation io.github.brian8a1/atisbo-docs

Read-only search and page retrieval from the public Atisbo documentation corpus. No authentication.

fmsg io.github.markmnl/fmsg-mcp

Federated messaging with your fmsg hosting provider. Connect with OAuth or an API key.

melody-genie app.melodygenie/melody-genie

Write lyrics in 100+ styles, score them, generate full songs with 4 engines, split stems. OAuth.

structured-output-mcp-agent-authlib ai.getvda/structured-output-mcp-agent-authlib

Structured Output MCP Agent (Authlib)

IntoDNS.ai DNS & Email Security Scanner ai.intodns/scanner

DNS and email security: check SPF, DKIM, DMARC, DNSSEC, DANE and build the records. 45 tools.

Final release; the checks moved to 9lives (9l mcp). Local QA MCP: scan, inspect, repro, run tests.

agentready app.vercel.agentready-rho/agentready

Scan any website or MCP server for agent readiness: 0-100 score, a fix per failing check. Free.

signal com.returnonsecurity/signal

Cybersecurity market intelligence: funding rounds, M&A, investors, valuations, corporate lineage.

Multi-layer security scanner for MCP servers and agent skills (injection, exfiltration)

Read-only Symfony introspection: routes, services, entities, Doctrine, security, Twig and more.

Deterministic no-LLM MCP server that scrubs secrets before they reach an agent. Never leaks values.

Kerne Honesty Index io.github.kerne-protocol/honesty-index

Advertised versus realized yield for stablecoin vaults, signed hourly, reproducible from chain.

Headless MCP: author and render PromoShot .promo video projects (stills, GIFs, video).

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

Durable agent memory over a markdown vault: bitemporal facts, timelines, hybrid graph search.

Local-first MCP server for safe Ghost authoring, diagnostics, scheduling, and publishing.

AI writes. SPARDA proves. Deterministic, offline security gate for AI edits.

Filesystem-based MCP server for Obsidian vaults — read, search, and edit notes, no app required.

Mockbird dev.workers.mockbird.mockbird/mockbird

Mock REST APIs, fake OAuth2/OIDC provider, uptime monitors + heartbeats, live badge/QR images.

MCP server for Check Point Harmony Email & Collaboration (Avanan) email security.

Audit agent skills/prompts against 8 supply-chain attack patterns. Deterministic, no-LLM scanner.