"Semantic search, RAG, and memory systems" matching MCP servers:

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

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.

Persistent memory and payment safety for AI agents on Lightning. Enables agents to remember purchases, track vendor reputations, enforce budgets, and share trust signals via Nostr.

📈 提供股票、加密货币的数据查询和分析功能MCP服务器

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

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

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.

Discover and pay for APIs and MCP tools per call over Bitcoin Lightning (L402): search the bolthub marketplace, preview prices, and pay from your own wallet (LND, NWC, LNbits) with hard budgets, prepaid credit, scoped sub-agent delegation, and verifiable receipts. Non-custodial and works without a wallet for search and free tools.

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+.

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

Connects LLMs to NewsData.io to search for latest news, cryptocurrency trends, and financial market data with advanced filtering options. It enables users to access real-time headlines, historical archives, and news sources directly through natural language.

AI-powered ENS intelligence for autonomous agents, enabling search, valuation, trading, and management of ENS domains via the Model Context Protocol.

MCP server for Gloria AI curated crypto news. Provides curated, real-time cryptocurrency news digests, recaps, and search.

Enables agents to search a verified directory of machine-payable services, inspect service and wallet reputation, and get pre-payment checks before spending.

An MCP server that exposes the satring.com L402 service directory, enabling AI agents to search and query Lightning-paywalled and stablecoin-gated APIs without needing prior knowledge of their URLs.

Enables live market data lookup and search for tokenized stocks, ETFs, commodities, bonds, and real estate on Robinhood Chain, plus broader DEX token discovery, including price queries, market ranking, and movers.

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

An MCP server that gives Claude, Cursor, and any MCP-compatible agent live on-chain market data from DexScreener — search pairs, inspect tokens and pools, and pull trending/boosted tokens across every chain.

A cryptocurrency news aggregation server providing AI-powered sentiment ratings, trading signals, and real-time market updates. It allows users to search news by coin, source, or engine type and filter results based on AI impact scores and bullish/bearish signals.