"How to operate notes in the Memos app" 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.

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.

Blockchain JSON-RPC on 23 EVM chains for AI agents — Ethereum, Base, Arbitrum, plus young chains like Robinhood Chain, Plasma and Ink. Free reads with no key; heavy methods (eth_getLogs, trace, debug) via a free API key or x402 USDC pay-per-call.

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.

Enables AI-powered cryptocurrency trading and analytics across multiple exchanges and blockchains, with integrated Telegram bot and live trading capabilities.

Enables Claude to monitor and execute Binance trading strategies through a bounded MCP tool interface, with risk controls and audit logging.

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), ...

Enables AI agents to directly operate ChainPay cryptocurrency payment system, including order creation, balance checks, and withdrawals.

Enables AI agents to send and receive private Zcash payments with shielded transactions, balance checks, and encrypted memos.

Enables AI agents to spend with the user's own key by paying via USDT TRC-20 and buying Visa/Mastercard prepaid cards, travel eSIMs, and gift cards, and also provides access to policy and how-to documentation.

Phosphor is a local stablecoin portfolio manager that exposes an MCP server, enabling AI agents to read balances, composition, and costs, and propose actions like consolidation or policy changes, with all execution gated by explicit human approval in the app window.

Enables AI agents to attach on-chain memos to payments on Base using the $MEMO token. Supports sending, reading, and querying memos joined to transactions.

MCP server that lets AI agents operate a user-owned wallet on the Bitcoin-IPC testnet, enabling BTC deposits, cross-subnet wBTC payments, and anchored payment receipts, with local key signing and spend caps.

Prepares unsigned App/PWA handoffs for creating positions in Denaria markets, returning QR codes for user review and signing in the Denaria app, without signing or executing transactions.

Turns Base44's AI builder into a Monad web3 app builder, enabling anyone to vibecode consumer crypto apps (invisible wallets, gasless USDC payments) by describing them in English.

MCP server for Pi Network that enables AI agents to query Pi chain data (balances, transactions) and verify user tokens, with optional payment sending that is off by default.

Provides a non-custodial USDC wallet on Base for AI agents, with human-in-the-loop approval for every payment.

MCP server for DeFi execution — lets AI agents swap, provide liquidity, lend, bridge, and run yield strategies across 22 chains in a single transaction. 7 tools for token discovery, portfolio analysis, quoting, and execution via the Haiku API.

x402-trust gives AI agents a "check before you pay" layer for the x402 ecosystem.