MCP Server Directory

SiteVitals

Monitor website health, uptime, SEO, security and performance via your AI assistant.

AI Firewall MCP

Multi-agent LLM security layer detecting prompt injection and jailbreaks.

smbCloud Mail & Auth

Email infrastructure and authentication for developers: domains, inbox routes, auth apps, deploys.

Intent security pre-flight checks for autonomous AI agents.

Zero-knowledge proof validator and cryptographic locker.

Inaturalist

iNaturalist MCP — citizen-science species observations (free, no auth for read-only)

io.github.matetools/mcp-server

35 utility tools for AI agents — mate.tools API. Hash, regex, SEO, random, DNS, SSL, JWT.

Pubmed

PubMed MCP — wraps the NCBI E-utilities API (biomedical literature, free, no auth)

io.github.0xthaner/reputa

Reputa: wallet risk & security plus DeFi cover (insurance) analyses, paid via x402.

PII and secrets sanitization gateway with advanced OCR merging logic.

io.github.onetrueclaude-creator/hebbian-vault

Usage-adaptive Obsidian vault search: Hebbian + PageRank + BM25 hybrid ranking.

io.github.mbeato/apimesh

74 paid web-analysis APIs (SEO, security, TLS, DNS, email) as MCP tools. USDC via x402.

Tribunal TJSP: Cadastro de Pedido de Certidão

Tribunal TJSP: Cadastro de Pedido de Certificate, official-source lookup. Platform-hosted, pay per q

Generate PDFs from Markdown or HTML. Zero-auth, agent-native. Returns base64-encoded PDF.

Tribunal TJSP: Certidão Cível de 1º Grau

Tribunal TJSP: Certificate Cível de 1º Grau, official-source lookup. Platform-hosted, pay per query

Tribunal TJSP: Certidão Criminal de 1º Grau

Tribunal TJSP: Certificate Criminal de 1º Grau, official-source lookup. Platform-hosted, pay per que

Tribunal TRF1: Certidão Negativa Cível e Criminal

Tribunal TRF1: Certificate Negativa Cível e Criminal, official-source lookup. Platform-hosted, pay p

Tribunal TRF2: Certidão Negativa Cível e Criminal

Tribunal TRF2: Certificate Negativa Cível e Criminal, official-source lookup. Platform-hosted, pay p

catfacts

Cat Facts MCP — wraps Cat Facts API (free, no auth)

chucknorris

Chuck Norris MCP — wraps chucknorris.io (free, no auth)

holidays

Holidays MCP — wraps Nager.Date API (free, no auth)

guif

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

Tribunal TRF3: Certidão de Distribuição

Tribunal TRF3: Certificate de Distribuição, official-source lookup. Platform-hosted, pay per query w

io.github.andrewszk/clawvault-mcp-server

AI agent payment security - spending limits, whitelists, and human approval.