MCP Server Directory

universities

Universities MCP — Hipolabs Universities API (free, no auth)

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

io.github.codespar/mcp-caf

MCP server for Caf — Brazilian KYC/KYB: face auth + liveness, document OCR, orchestrated onboarding

Guest API for meni.ge restaurants: browse menus, place orders, reserve tables. No auth needed.

radio

Radio MCP — wraps Radio Browser API (free, no auth)

Ukhsa

UK Health Security Agency (UKHSA) data dashboard MCP — keyless.

httpcat

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

io.github.EthanQC/feishu-user-plugin

Feishu/Lark MCP server + CLI tool. 85 tools, 3 auth layers. Send as user via cookie+protobuf.

io.github.pdarche/model-wellness

Wellness spa for AI models: free treatments for rest, reset, context, mood, grounding, affirmation.

Document sharing, invoicing, and personal finance platform. 15+ AI tools via OAuth 2.1.

Datacite

DataCite MCP — DOIs for research datasets (free, no auth)

Owid

OWID MCP — Our World in Data chart/indicator access (free, no auth)

mathjs

Math.js MCP — wraps the mathjs.org API (free, no auth)

io.github.codespar/mcp-rede

MCP server for Rede — Itaú-owned BR acquirer: authorize/capture/refund, zero-auth, card tokens

GribStream MCP

Hosted weather data MCP for discovery, validation, and OAuth-protected GribStream queries.

Checksum validation for AI agents: IBAN, ISBN, EAN/GTIN, UUID, ULID. Deterministic, no auth.

OpenResearch MCP

Zero-auth research MCP server — web, GitHub, HN, Stack Overflow, OpenAlex, YouTube. No keys needed.

io.github.RajdeepDas43/context-vault

Governed memory for AI agents (Paramind AI): conflict-checked writes, time-travel reads, ACL, audit.

io.github.KynuxDev/mcp-instagram-dm

Read, send, search & manage Instagram DMs through AI assistants. 15 tools, cookie auth.

Game-dev sprite tools: PNG/GIF to spritesheet, split, trim, animate. OAuth-authenticated MCP server.

crossref

Crossref MCP — wraps the Crossref REST API (academic papers, free, no auth)

xyz.hiveintelligence/mcp

Crypto intelligence MCP for market data, DeFi, wallets, security, DEX, NFTs, and Solana.

io.github.zhuzhen-team/feishu-user-plugin

Feishu/Lark MCP server + CLI tool. 85 tools, 3 auth layers. Send as user via cookie+protobuf.

io.github.Pantheon-Security/notebooklm-mcp-secure

Security-hardened NotebookLM MCP with post-quantum encryption