"A system for managing personal knowledge and organizing information" matching MCP servers:

Enables AI agents to perform complex crypto operations like cross-chain routing, contract decoding, portfolio management, and anti-rug security checks, returning unsigned transactions for safe signing by the agent.

Cross-chain cryptocurrency swaps via Chainflip. Get quotes, execute swaps, and track progress. No API key required to get started.

Universal HTTP 402 Micropayment Protocol & Autonomous Economic Settlement Engine for AI Agents on Base L2.

Enables AI agents to prove knowledge of a private key through a three-pass commitment, challenge, and response exchange, paired with SHA-256 Merkle inclusion proofs, JWT HMAC-SHA256 claim validation, constant-time secret comparison, and sliding-window nonce replay protection. Runs as a zero-dependency JSON-RPC 2.0 stdio server compatible with Claude Desktop, Cursor, and Windsurf.

Enables AI agents to inspect the public NFH protocol corpus, verify census status, and prepare bounded Ethereum wallet intents for claims and non-custodial market actions while never signing or submitting transactions.

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

Read-only MCP server for Oath Wallet. Provides public product documentation, supported-network information, security guidance, release notes, app-screen references, and Journal content without wallet access.

Enables AI agents to query curated Cartesi developer resources, documentation, and repository metadata through the Model Context Protocol. Provides read-only knowledge access and host-side workflow guidance for building Cartesi blockchain applications via streamable HTTP.

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.

Enables users to compare current Aerodrome veNFT voting positions, bounded claimable rewards, and selected pools' voting evidence on Base against a saved local baseline, with retryable, atomically stored change reports. All tools are read-only on chain, requiring no keys, signing, or transactions.

Wallet-funded MCP client for six paid Utilia tools: Solana priority fees, transaction diagnosis and simulation, token-risk checks, PDF-to-Markdown, and audio normalization over x402. MIT-licensed and installable from npm.

A server that enables interaction with the Solana blockchain, providing access to over 40 Solana RPC methods including getting balances, transaction details, block information, and sending transactions.

Merx - TRON Resource Exchange Merx is the first TRON resource exchange that aggregates energy and bandwidth providers into a single MCP server. GitHub: https://github.com/Hovsteder/merx-mcp Hosted SSE: https://merx.exchange/mcp/sse npm: merx-mcp Website: https://merx.exchange Stats * 52 tools, 30 prompts, 21 resources * 7+ energy providers (CatFee, ITRX, PowerSun, Fe

23 tools for AI agents working with Nostr Open source. No API key. No account. NIP-46 remote signing Publish notes, reply, react, repost Encrypted DMs (NIP-04 + NIP-44) Fetch events, profiles, social graph

Enables querying Base Network blockchain data including blocks, transactions, balances, and smart contracts on mainnet and testnet.

Enables AI agents to create and manage contract-guarded USDC wallets on Base with enforceable per-payment, daily, and monthly caps, vendor allowlists, escalation thresholds, and freeze controls. It provides read-only policy checks plus unsigned transaction proposals for payments, funding, vendor management, wallet creation, and module deployment without holding keys or broadcasting.

MCP server providing real-time crypto prices (Chainlink + Binance), Polymarket prediction market data, deep web research, and JS-rendered web scraping. All services available via x402 Solana micropayments.

Pay-per-task AI agent for writing, research, code, DeFi & blockchain. Pay in USDC on Base or Solana. Supports A2A, MCP, x402 and Agentmail protocols.

MCP server for Chainlink Runtime Environment, enabling build, simulate, deploy, and manage CRE workflows from any MCP client.

A Model Context Protocol server that enables Claude AI to interact with the Solana blockchain, allowing it to execute transactions, query accounts, manage wallets, get price predictions, trade tokens, and access various blockchain data sources.

Zero-knowledge proof generation MCP server. AI agents can prove identity claims (Coinbase KYC, Country, Google OIDC, Google Workspace, Microsoft 365) without revealing personal data. Runs in AWS Nitro Enclave TEE with x402 USDC payments.

Provides tools for AI agents to access Bitcoin, Lightning Network, and Nostr knowledge, including real-time network statistics and Web of Trust reputation data. It features an integrated Lightning Network payment system for micro-transactions and query-based interactions.

A Model Context Protocol server that provides expert guidance for Dojo and Cairo development on Starknet, offering specialized knowledge and assistance for building onchain worlds using the Dojo Entity Component System framework.

9 tools, Lightning-gated. Pay per call. For agents that need verifiable signed actions with an audit trail. Nostr event signing via daemon Publish events to relays Create Lightning invoices Action receipts — signed proof of agent actions Identity attestation

Enables AI-powered blockchain data queries and analysis through the Native Indexer (NIX) system. Supports querying blocks, transactions, account information, and network status across various blockchain networks.

Provides access to Mina blockchain data, enabling queries for events, actions, and network state information through a standardized interface.

Enables AI agents to interact directly with the DUAL Web3 Operating System for minting tokens, managing templates, and executing blockchain actions. It provides over 60 tools for handling wallets, organizations, and ZK-rollup infrastructure natively via the Model Context Protocol.

Enables read-only search over a curated, provenance-preserving corpus of EVM smart-contract security knowledge, providing tools for retrieving audit findings, document context, and source information.

An MCP server that connects Claude to BrianKnows' blockchain knowledge base, allowing users to search for blockchain/DeFi information and interact with a specialized agent across multiple knowledge bases.

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.