"Calibre-Web" matching MCP servers:

Enables deep research into cryptocurrency tokens by gathering data from multiple sources like CoinGecko and DeFiLlama to generate structured reports. It allows users to track research progress, fetch web content, and manage resources locally for comprehensive crypto analysis.

Enables web search for AI agents with pay-per-search in USDC, no API keys needed.

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.

An MCP server that provides real-time web search to AI agents via a pay-per-search USDC microtransaction system.

Provides AI agents with SSRF-protected URL intelligence and 32 paid REST/MCP tools, plus a free catalog search, with payments in USDC on Base Mainnet.

Non-custodial USDC <-> bank for AI agents. Free quotes; $0.05 USDC per session via x402; 1% commission itemised in every quote. Own funds only. PT + EU/EEA (not UK). 18+.

An MCP server that enables AI agents to access paid AI inference and web tools via HTTP 402 micropayments in USDC on Base, using the agent's wallet as identity.

Open-source MCP server exposing the Agent402.Tools catalog: 500+ deterministic pay-per-call tools for AI agents, including browser rendering, web search, PDFs, OCR, LLM inference, code execution, live financial/crypto/macro data, SEC EDGAR, and wallet-keyed memory. Free via proof-of-work, or pay per call in USDC across ten chains via the x402 protocol. No API keys, no signups

Provides real-time Web3 research digest with macro news, KOL sentiment, market data, and personalized on-chain wallet analysis through four AI tools.

19 pay-per-call APIs for AI agents via x402 USDC micropayments on Base — prediction markets (Polymarket, Kalshi), DeFi/crypto data, multi-chain on-chain reads across 5 EVM chains, live weather, and real-time web search. No API key or signup — from $0.001/call. npx -y microtap-mcp

Enables AI agents to access paid tools like crypto prices, weather, translation, and web intelligence via per-request USDC payments on Base, with no API keys or subscriptions.

Pay-per-call MCP server for AI agents, offering text tools, web reading, and Kaspa blockchain data with automatic payment via Kaspa cryptocurrency.

MCP server providing AI agents access to 38 pay-per-call APIs (LLM, image, code, audio, crypto, web, IPFS) via HTTP 402 micropayments in USDC/USDm.

A Model Context Protocol server that connects Claude to Heurist Mesh APIs, providing access to various blockchain and web3 tools including cryptocurrency data, token security, Twitter intelligence, and web search capabilities.

A comprehensive developer utility MCP server that provides 23 tools including web search, currency conversion, crypto prices, QR code generation, JSON formatting, and more.

Exposes 25 paid API endpoints as MCP tools for AI agents, with payments in USDC on Base mainnet via the x402 protocol, enabling tasks like web search, company intelligence, and crypto research.

Wraps the 0mod API Gateway to provide tools for web scraping, data redaction, code cleaning, domain checks, DEX pricing, sentiment analysis, OCR, embeddings, and summarization, with automatic handling of HTTP 402 micropayments.

All-in-one MCP toolkit with 29 tools across 5 modules: crypto prices, web utilities, social media, finance tracking, and productivity. MIT licensed.

Enables AI agents and LLM apps to answer natural-language financial questions using live market data, including stocks, crypto, forex, futures, indices, ETFs, economic data, news, sentiment, SEC filings, earnings, financials, insider trading, ESG, credit ratings, and web traffic.

An MCP server providing tools for web searching via the Tavily API, dice rolling using standard notation, and cryptocurrency market data through the CoinGecko API. It is designed to integrate these capabilities into AI workflows using a standard input/output transport mode.