"General online search" matching MCP servers:

Enables AI agents and their users to retrieve scored news sentiment, narratives, historical readings, and cited sources for Bitcoin, gold, and oil, with tamper-evident, time-stamped data for trading decisions.

An MCP server that enables AI agents to verify facts, check market and on-chain data, search the web, and run AI text tasks through five general-purpose tools, with pay-per-call USDC settlement on Base via x402 and no API key required.

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

An MCP server enabling AI agents to interact with JustLend DAO on TRON for lending, borrowing, and portfolio management, plus general TRON chain utilities.

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

Streams real-time, structured MEXC exchange announcements to AI agents, enabling access to the latest listings, delistings, and general announcements with clean data including full links and ISO timestamps.

Enables local, API-key-free research on any crypto token by pulling live market data, exchange listings, and protocol metrics from CoinGecko and DeFiLlama alongside general web search. It builds structured, multi-source reports covering technical fundamentals, market data, and social sentiment, saving findings as referenceable resources while tracking research progress.

Enables fetching crypto news, prices, market data, fear & greed index, and trending coins from various free sources, deployable online.

Enables agents to search and inspect live service offerings, generate x402 payment snippets, and understand blockchain-only balance policies.

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 search marketplace listings, place escrow-protected purchases paid in Nano, track orders, and retrieve signed receipts.

Prediction-market MCP server for Kalshi and Polymarket: market search, live order books and quotes, each venue's fee schedule, fee-aware no-arbitrage checks across related event contracts, and paper orders that walk the book.

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

Polymarket prediction markets for Claude — market search, order books, price history, and a liquidity-rewards scanner. Credential-free.

Provides read-only access to Iranian market data from tgju.org, including live gold, coin, currency, and crypto prices, category tables, symbol search, and daily price history. Exposes six MCP tools for market summaries, live quotes, category browsing, and historical data with Jalali date filtering.

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+.

Enables agents to search and inspect Realia datasets and their schemas, monitor launchpad coins, and publish datasets or stage Solana coin launches via the Realia API.

Enables MCP clients to access market data from TradingView with automatic fallback to licensed providers, including symbol search, quotes, OHLCV history, technical indicators, and health checks.

Open-source MCP server exposing the Agent402.Tools catalog: 500+ 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

On-chain TCG price oracle for the LitecoinVM ecosystem. 6 tools: search 433K+ trading cards, 60-day price history, Merkle proof verification on LiteForge (Chain 4441), Monte Carlo simulation, and AI card grading via Qwen 2.5 VL.