MCP Server Directory

CoinPaprika com.coinpaprika/coinpaprika

Real-time crypto market data: prices, tickers, exchanges, OHLCV candles, and metadata.

dropcoin-invoice io.github.freshfos/dropcoin-invoice

German e-invoicing: generate XRechnung 3.0, pre-check and extract (incl. ZUGFeRD PDF). Paid.

Trading Strategy Data io.github.Vohlsyr/trading-strategy-data

Live crypto trend signals, ranking, and backtesting for BTC/ETH/SOL/XRP/ADA. x402 pay-per-call.

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

Market Data com.timzinin.api/market-data

33 pay-per-call market and news data tools over MCP with free discovery and x402 payments.

AP Control Labs Finance Controls io.github.juodoc/ap-control

Read-only finance and operations controls for AI agents with evidence and safe next actions.

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

macro-pulse-x402 io.github.benji7891/macro-pulse-x402

Country economic momentum score (GDP, inflation, unemployment) via x402 USDC micropayments.

CoinMarketCap com.coinmarketcap/coinmarketcap

Official CoinMarketCap MCP server: real-time crypto prices, market cap, rankings and exchange data.

Koi-pond MCP server — varieties database (Gosanke + secondary), pond stocking calc, koi-specific

MUJ428 Trust Layer — Bind Approved Intent to Verified Effect io.github.wmujahid428-web/muj428-trust-layer

Payment-rail-independent intent-to-effect integrity for consequential agent actions.

OpenAI Billing io.github.mcp-dir/openai_billing-mcp

OpenAI organization usage and cost reporting through an admin API key connected by the user.

IDF Metale — gold & silver bullion (Poland) pl.idfmetale/catalog-feed

Polish gold/silver bullion dealer: live PLN prices, stock, buyback prices, guides. Read-only.

Real-time Bitcoin regime-switch signals from three independent sensors. Free tier available.

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

Private USDC/USDT payments on Solana: hidden amounts, unlinkable, optional auditor.

Framework MCP do Apex ERP Contábil: CNAEs, jurídico, obrigações, financeiro, marketing e WhatsApp.

Checkout.com io.github.checkout/mcp

Search Checkout.com docs and API reference, plus manage payments, refunds, and payment links.

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

nukez-mcp io.github.ZlaylowZ/nukez-mcp

Agent-native storage with cryptographic verification on Solana. Keyless: clients sign and pay.

Treat Rocks rocks.treat/treat-rocks

Buy a $2 novelty digital rock over x402 (USDC on Base). Serves payment instructions only.

pulsefeed-x402 io.github.Nikolife2016/pulsefeed-x402

Verify x402 payment endpoints before an AI agent pays: scam scan, on-chain checks, trust scores.

Qoory Crypto Intelligence io.github.qoory-ai/qoory

One Data Plane for crypto research, with 42 live tools for markets, entities, news, and signals.

preflight402 io.ironshell/preflight402

Trust verdict for an x402 payment endpoint: health, 402 handshake, price, proceed/caution/avoid.