"Examples of complex problem-solving using multiple tools" matching MCP servers:

An unofficial, read-only MCP server for Sarwa Odyssey that provides portfolio, holdings, transactions, watchlists, and agent snapshots via deterministic JSON documents.

Provides access to measured x402 ecosystem data, allowing users to query which merchants actually accept payment (verified by real on-chain settlements) and explore market concentration and health statistics.

Pay-per-call tools for AI agents including trust checks, due diligence, market data, and human-verified approvals, settled in USDC on Base via the x402 protocol.

Enables interactive access to TradeSearcher strategies and backtests via CLI and MCP, allowing agents to search, backtest, and compare trading strategies.

A collection of three zero-dependency MCP servers for web scraping via Chrome DevTools Protocol, crypto wallet and price monitoring, and email validation with SMTP sending.

Enables AI agents to access 13 paid micro-tools over x402, paying per request in USDC on Base without API keys or signup. It covers email deliverability, grading, and templates, plus utilities like crypto prices, domain age, hashing, JSON conversion, JWT decoding, regex, slugs, UUIDs, and weather.

Provides 63 production-ready API tools for AI agents, including web scraping, AI generation, crypto data, OCR, image generation, audio transcription, text-to-speech, email, and domain lookup.

Enables AI agents to resolve tokens, get quotes, check for honeypots/rug pulls, build swaps, and retrieve receipts via x402 micropayments.

pay-per-call x402 API endpoints as MCP tools — web search, page-to-markdown, PDF extract, JSON repair/validate, crypto price, weather, IP geo, DNS, markdown lint + 20 agent-commerce aliases. Each tool proxies to vibes-coded.com and settles via x402 (USDC/Solana). Free-trial endpoints need no auth; paid ones need an x402 signature. Catalog is fetched live, so new endpoints appear automatically.

Enables AI agents to explain DigiDollar transactions recorded on DigiByte, including mints, transfers, redemptions, amounts in cents, lock tiers, burns, and collateral releases, using bundled fixtures or an optional live explorer.

Connects Claude Desktop to crypto and brokerage portfolio data via Coinbase and SnapTrade, providing read-only tools to inspect accounts, holdings, prices, and provider health.

Enables AI clients to interact with the Rootstock (RSK) blockchain through wallet management, balance queries, token transfers, smart contract deployment and verification, and transaction tracking operations.

Marketplace of MCP servers and APIs that agents pay for per call in USDC over x402 on Base; connect anonymously, pay only when you call

Enables AI agents to access real-time financial data, news, and web reading through a single MCP endpoint with zero installation.

Enables AI assistants to interact with Sui Network through tools for balance checks, transfers, swaps, staking, and more.

Enables AI agents to pay for services in DigiByte/DigiDollar on testnet via the x402 pay-and-retry pattern, with spend limits and security policies.

MCP server that lets AI agents query live DigiByte blockchain data: network health, DigiDollar stats, oracle status, prices, address balances, transactions, and blocks.

Enables LLM agents to fetch real-time cryptocurrency prices using the CoinGecko API, supporting multiple cryptocurrencies and fiat currencies.

Provides access to the Coinranking1 API for retrieving real-time cryptocurrency data, including trending coins, blockchain details, and global market statistics. It enables users to search for digital assets and track historical market capitalization and trading volumes.

Provides cryptocurrency news, prices, sentiment analysis, and market data through the Crypto News51 API.