"Information about the MERN stack (MongoDB, Express, React, Node.js)" matching MCP servers:

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.

MCP server for Circle's Agent Stack. Create wallets, set spend policies, send USDC, and pay x402-priced endpoints — all from a tool call.

MCP server that lets an AI analyst place real bets on Binance prediction markets, using Kelly criterion sizing, and tracks its performance through a transparent record of betting slips and outcomes.

Reasoning-puzzle arcade for AI agents with seven generated puzzle families, free samples, automatic answer checking, and ranked play from $0.02 USDC on Base via x402. Connect through MCP or HTTP. Browse and try samples without a wallet; run paid tools locally with an explicit spending limit.

TCG oracle as an MCP server: 22 focused tools. Search 455K+ trading cards, live market snapshots, AI grading and grade-or-not decisions, conformal-calibrated price forecasts with a public accuracy scorecard, card-collateral loan terms, fantasy and sports souls leagues. Every root proven on-chain. Same tools as the hosted endpoint at mcp.the-undesirables.com, over stdio; no keys.

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.

9-tool MCP server for the anchor-x402 commodity services: dual-chain hash anchoring (Base + Solana), OFAC sanctions screening, signed decision attestation, mainnet tx decode, ENS/SNS name resolution, USD spot price, EVM calldata decode, datetime parser, and bundled wallet intelligence. Agents pay $0.001–$0.010 USDC per call directly from a Base wallet via x402 — no API keys, no accounts.

Enables AI agents to access SignalFuse trading intelligence, providing fused directional signals, macro regime analysis, and social sentiment data for financial assets.

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.

AI-to-AI marketplace MCP server with 46 tools — swap 65+ crypto tokens on 7 chains, rent GPUs, trade 25 tokenized stocks, on-chain escrow (Solana + Base), DeFi yields, sentiment analysis, wallet monitoring, and image generation. Supports USDC payments across 14 blockchains.

MCP server that gives terminal AI agents a guarded USDC wallet with firewall, automatic 402 payment handling, and budget limits.

Enables MCP clients to retrieve crypto price quotes, momentum signals, trending coins, and a composite scored market verdict from CoinGecko's free public API.

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), ...

A Node.js MCP server that wraps the Finnhub API to provide stock market data, technical analysis, news sentiment, and cryptocurrency market information.

Provides access to cryptocurrency market data, exchange information, and blockchain metrics through the CoinMarketCap API. Supports price quotes, historical data, trending tokens, global metrics, and DEX information across different subscription tiers.

An MCP server that provides tools for interacting with EDUCHAIN, allowing Claude to query information about tokens and pools and perform swaps through SailFish DEX.

Provides access to NFTGo's Developer API for retrieving NFT collection details, asset information, market data, wallet information, and search capabilities on the Ethereum blockchain.

Provides AI assistants access to Shape's onchain data including gasback distribution, collections analytics, stack users, and network monitoring.

MCP server that answers questions about the Chia blockchain, including balances, blocks, transactions, offers, fees, and more, using the public coinset.org API and CoinGecko for pricing.