MCP Server Directory

io.github.couchbase/mcp-server-couchbase

Couchbase MCP Server - Enable AI agents to connect to and interact with Couchbase clusters.

io.github.smigolsmigol/llmkit

AI cost tracking: 11 tools for spend, budgets, and Claude Code + Cursor + Cline costs

io.github.cyanheads/attack-surface-mcp-server

Passive external attack-surface mapping: CT subdomains, DNS, TLS, HTTP posture, RDAP/WHOIS, Shodan.

io.github.billy12151/memory-arbiter-mcp

Shared memory store for AI coding tools with dual-timeline conflict arbitration.

io.github.daedalus/mcp-rpn

MCP server that exposes an RPN calculator

io.github.daedalus/mcp-sympy

MCP server that exposes SymPy's symbolic mathematics functionality

io.github.Abhigyan-Shekhar/Waggle-mcp

Persistent graph-backed conversational memory for AI agents.

io.github.daedalus/mcp-z3-prover

MCP server exposing Z3 solver API

Historis keeps track of what happened — so you and your AI are never out of sync.

io.github.digitalweb33333-creator/x402-endpoints

x402 paid API tools for AI agents on Base: EU/global registries, crypto, wallet & agent trust.

io.github.emresemercioglu/signallabs-mcp

Competitive Intelligence MCP: generate AI battlecards, track competitors, monitor market signals.

io.github.vk0dev/agent-cost-mcp

Cost Guard for Claude Code: per-tool ROI, subagent attribution, anomaly/forecast/budget guards.

io.github.datasynx/agentic-ai-shadowing

Observes tasks and generates anonymized SOPs — task tracking and SOP review via MCP. Fully local.

io.github.davidmosiah/wellness-air

Local-first air-quality MCP for AI agents — AirGradient, AirThings, PurpleAir, IQAir, Awair.

Gematria and pattern decoder for words, sacred texts, news, dates, and Human Design.

io.github.thomenz/brdata-mcp

Brazilian company, risk & public-tender data (CNPJ, CEIS/CNEP, PNCP) as x402-paid agent tools

Runnable, versioned lists agents can search, read, create and update. Git under the hood.

io.github.vk0dev/code-impact-mcp

Dependency graph and blast-radius analysis for local TypeScript/JavaScript repos.

io.github.yakuphanycl/instinct

Self-learning memory for AI coding agents with pattern detection and confidence scoring.

io.github.makririch/einvoice

XRechnung & ZUGFeRD: create, validate, and convert German e-invoices. EN 16931 compliant.

io.github.dingdawg/dingdawg-governance

Universal governance layer for AI agents. MCP-native, fail-closed, audit proofs and rollback.

io.github.sns45/better-call-claude

Voice Calls, SMS, and WhatsApp for Claude Code with cross-channel context sharing.

io.github.vladkarpman/screen-buffer-mcp

MCP server for fast Android screenshots via scrcpy frame buffer (~50ms latency).

io.github.solutionsunity/odoo-surface-mcp

Full Odoo access for AI agents via MCP: CRUD, website, translations, attachments, workflows.