MCP Server Directory

EveryCalc xyz.everycalc/every-calc

69 free finance, military, school and everyday calculators as MCP tools.

Imperium Live Multi-Specialist A2A Swarm Mesh Coordinator dev.agentdiet/mesh

Coordinate multi-specialist A2A agent swarms with cryptographic handshakes and x402 settlement.

Kaal Agent Safety (x402 paid MCP) io.github.immoney1/kaal-agent-safety

Paid MCP tools for URL payment-safety scanning and provider recommendations; USDC on Base via x402.

ZKStamp Proof-100 io.github.ZKStamp/proof100

Shielded proof-of-existence timestamps on BitcoinZ (zk-SNARKs). Free trial: 3 proofs.

Complete Holded Invoice API integration with 72 MCP tools for invoices, contacts, products, and more

Business Manager 4Home Pros com.4home-pros/business-manager

Run a lawn, pool or cleaning business by chat: today's route, visits, payments, who owes you.

Drivestock io.github.clemensschmid1/drivestock

B2B industrial drives & automation: search parts, prices or on request, quote inquiries.

ClientFoyer MCP com.clientfoyer/clientfoyer

ClientFoyer MCP server for a freelancer client portal - projects, updates, files, invoices.

Detritus Site Services: Your Account us.detritus/account

Manage your Detritus account: sites, services, quotes, invoices, and notifications.

Halaxy MCP by usefulapi io.usefulapi/halaxy

Read Halaxy patients, appointments, slots and invoices; create patients, appointments and notes.

One verification call for third-party agent cards and payment mandates — a receipted verdict a

Leave Hacker app.leavehacker/leave-hacker

Which days of annual leave to book around bank holidays for the most days off, and cheap flights.

Citeri es.citeri/citeri

Bookings, clients, services and invoices of your beauty salon on Citeri (Spain) from your AI.

Bitstore exchange pro.bitstore/exchange

Crypto and fiat exchange rates, limits and ready exchange links on bitstore.pro.

Lucyd trade.lucyd/mcp

Trade Bitcoin Up/Down prediction markets on Lucyd: markets, order books, orders, positions.

Invoiceer e-invoicing tools io.invoiceer/einvoicing

Create and validate XRechnung, ZUGFeRD and Peppol e-invoices (KoSIT); Peppol lookup, rule help.

MangroveAI io.github.MangroveTechnologies/mangroveai

Guardrails for trading agents. Built-in risk management, 100+ tools for strategy R&D, 12+ venues.

Deterministic zero-trust policy enclave and cryptographic WORM audit ledger for MCP tools.

Æfact — Korean fact desk for AI agents site.aefact/aefact

Verified Korean facts: law changes by date, Bank of Korea figures, fact-check requests.

x402fix co.youraitools/x402fix

x402 endpoint doctor: grades a paid route A-F unpaid, with paste-ready fixes. By Crypto Money Maker

Trading Zones 4H Market Decisions io.github.lucrummediacompany/trading-zones

BTC, ETH, XRP, ONDO and TZ SELECT 4H decisions, native x402 MCP and open buyer SDK.

Screwtape.ai ai.screwtape/screwtape

Checks if an AI agent may pay: duplicate invoices, totals, evidence. Signed receipts.

Iris io.github.0xVector0/iris

On-chain investigations: wallet analysis and fund tracing on Solana, EVM chains, Bitcoin and Tron.

Read-only Nimiq books: balances, history, statements, staking, payment and stake links. Never signs.