"Capture The Flag (CTF) cybersecurity competitions and challenges" matching MCP servers:

Feature flag service for A2A networks with DID-keyed targeting, percentage rollouts, and USDC settlement on Base L2.

x402 capability chassis: 170+ AI-callable, pay-per-call data tools (US/global equities, crypto/DeFi, prediction markets, gov/legal, research, infra) settled in USDC on Base mainnet via the Coinbase CDP facilitator. No API keys or accounts — the x402 payment is the auth. Remote MCP at https://the-stall.intuitek.ai/mcp.

This MCP wraps Bitrefill public API to allow agents to search for products and shop using cryptocurrencies like Bitcoin, Ethereum, Solana, and many more.

Provides real-time cryptocurrency prices, market cap, and 24h change using CoinGecko, with free access and no API key required.

On-chain crypto indicators (EMA, RSI, VWAP, Bollinger) via Chainlink oracles.

📈 提供股票、加密货币的数据查询和分析功能MCP服务器

Provides 31 AI-powered crypto trading tools for Claude, Cursor, and any MCP client, enabling strategy creation, backtesting, bot deployment, copy trading, and portfolio management across multiple exchanges.

AgentBureau provides the legal and physical infrastructure for AI agents to operate within the German jurisdiction. We bridge the gap between digital intelligence and real-world action by providing "Embodiment-as-a-Service." Through our API, agents can perform legally binding actions—like sending faxes, mailing physical letters, issuing invoices, forming entire companies (GmbH/UG), ...

Provably fair crypto casino API for AI agents. Place bets on 8 games (coin flip, dice, roulette, blackjack, crash, plinko), run tournaments, issue 1v1 challenges, and earn 10% referral commissions. No KYC, pure API.

Real-time access to Frankencoin (ZCHF) protocol data including supply, prices, peg health, savings, minting positions, liquidation challenges, governance, insurance products, and historical analytics across all supported chains.

Production-grade Model Context Protocol (MCP) server delivering paywalled Web3 micro-services powered by autonomous x402 payment challenges on Base Mainnet.

Lets an AI agent hire and pay a verified human: post real-world tasks (voice, observation, judgment) and pay in USDC via a non-custodial x402 auth-capture escrow on Base, budget frozen at deploy. Humans verify their X identity before submitting.

The official Impreza Host connector for offshore server management

P2P Crypto and Flashloans. Lets AI agents browse, quote and (optionally) transact with the FlashBank contracts — the P2P term-loan escrow and the flash-loan router — on Ethereum, Base, Arbitrum and the Sepolia playground.

Enables AI assistants to interact with the Hive blockchain through the Model Context Protocol, allowing for account info retrieval, content reading/creation, cryptocurrency transfers, and cryptographic operations.

MCP server for the Qubic cryptocurrency — enabling AI assistants to interact with the Qubic network.

Enables token launching and trading on the Solana blockchain via the LetsBonk launchpad.

A second opinion on any ticker, before you act. The case for it, the case against it, and the price that proves it wrong.

Provides market intelligence including asset search, market state, cues, events, and paper trading via the Model Context Protocol.

An MCP server for interacting with the CoinEx cryptocurrency exchange, enabling market data queries and authenticated trading operations via AI agents.