MCP Server Directory

Open-source AI context firewall for governed model, retrieval, memory, and tool access.

Self-hosted MCP proxy that puts an x402 paywall in front of an existing MCP server

Google Chat as MCP tools: read, search and write to your spaces, direct messages and sidebar.

FilingDesk Data com.filingdesk/data

US LLC filing fees, annual-report deadlines and naming-rule checks, from official state sources.

Sheet Best MCP io.github.sheetbest/sheet-best

Connect AI assistants to Google Sheets through controlled tools for reading and updating rows.

Manage Apple iCloud Calendar through a reliable CalDAV MCP server.

Medical-billing tools for AI agents: prior-auth checks, denial decoding, claim triage, appeals.

Self-hosted operating layer for AI agents: knowledge, continuity, coordination, and governance.

Percolate io.github.bguillow-rgb/percolate

Search the Percolate specialty coffee database: 1,100+ coffees with brew recipes and pairings.

Audit whether ChatGPT, Gemini and Perplexity recommend a site. Readiness checks need no keys.

Nist Standards io.github.pipeworx-io/nist-standards

NIST Standards MCP pack

The Dutch Directory io.github.steffanricardo/the-dutch-directory

Dutch-learning market map: schools, Verified Pro tutors, exams, paths and courses near any capital.

MCP server exposing the ATimeLogger REST API (activities, reports, types)

QuickBooks Online MCP server for invoices, customers, and payments. OAuth 2.1 + PKCE, stdio/HTTP.

Japanese open-data MCP server: corporate-number validation, zengin bank codes, national holidays

Build, simulate and calibrate JAX block-diagram models of hybrid dynamical systems.

AgentPay — trust routing + spend caps for x402 agents io.github.romudille-bit/agentpay

Buyer-side trust oracle + capped sessions for x402 agents: verified_route, receipts, 17 free tools.

Kristo Intelligence io.github.hristovdimitri2-hub/kristo-intelligence

Pay-per-call DeFi intelligence for AI agents on Base — x402, USDC, no keys.

Unofficial SberBank Online: read accounts and operations, transfer with human approval.

MCPVOT — x402 Facilitator Machine io.github.MCPVOT/mcpvot

x402 paid APIs for AI agents on Base. Blockchain, wallet, DEX, crypto, web search.

Local-first MCP server for your own LINE and Telegram chats. Data stays on your machine.

Gov Bids io.github.pipeworx-io/gov-bids

Gov Bids MCP — open & historical US government bid solicitations (Wave 4b, hosted).

FullEnrich io.github.FullEnrich/fullenrich

Search B2B contacts, enrich verified emails and phone numbers, and export results.

Codebase analysis tools for AI agents: complexity, prop drilling, doc coverage, code smells.