"An overview of knowledge graphs and their applications" 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.

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.

MCP server that prepares Proof of Invention (POI) transaction requests for submission

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.

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.

An MCP server that provides authorization middleware for AI agents using private data, enabling consent management on Aleo and local private inference with persistent policy storage.

An AI-driven platform for analyzing Polymarket prediction markets using on-chain data, offering smart money tracking, sentiment analysis, and arbitrage detection via natural language queries.

Exposes nine purpose-built tools for EVE: Frontier on Sui Move, covering Smart Assembly contract coding, Smart Gate route and toll planning, Network Node gigajoule optimization, Smart Turret targeting, killmail threat intel, SSU market making, zkLogin character verification, sovereignty fuel tracking, and PTB drain simulation.

Account-less access to 45 Gemini models & autonomous agents, 71 edge microservices across 6 modular domain packages via L402, x402, MPP.

Algorand ecosystem knowledge layer as an MCP server, enabling identification of applications and assets, protocol discovery, name resolution, and protocol summaries without on-chain queries.

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.

An MCP server serving as a structured knowledge base of crypto whitepapers for AI agents to access, analyze, and learn from.

TON Data MCP Server — real-time blockchain data for AI agents. Provides wallet balances, token prices, STON.fi liquidity pools, market overview, transactions, and network state. 6 MCP tools, free tier, Docker-ready.

Enables users to audit EVM, Solana, and Move smart contracts and assess Web3 security risks through tools for honeypot detection, SPL token risk, MEV sandwich exposure, address poisoning, HTTP 402 invoice fraud, UTXO consolidation planning, and cross-chain bridge quotes.

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 AI agents with knowledge and code generation tools for building BSV blockchain applications using @bsv/simple.

Lets the owner of a Zetrix agentic wallet read, preflight and change that wallet's spending policy from their own agent, including deploying, updating and removing policies. Any change that loosens the policy is routed to an owner approval prompt before anything is paid or altered.

Enables autonomous agents to emit zero-knowledge attestations of their internal state hash and DID, anchor commitments to Base, and verify proofs via Aleo snarkVM.

Provides a persistent memory layer for Stellar and Soroban projects, scanning repositories to create a knowledge graph of contracts, storage, and on-chain state. Exposes this memory to AI agents via MCP, enabling project overview, search, and context recovery.

MCP server that enables AI agents to explore Bittensor subnets, check their health and economics, and discover their public APIs and schemas.

Enables autonomous agents to create and operate an Ethereum Safe wallet, send ETH or call contracts with their own signatures, and check transaction status without human approval or custody.

Enables on-chain attestation of any content onto the DigiByte blockchain, providing permanent, timestamped, tamper-evident proofs. Allows AI agents to notarize their outputs or verify attestations using only the blockchain.

Enables users to verify AI trading-agent track-record credentials or mint zero-knowledge STARK proofs for their own performance without revealing the underlying strategy. It supports registry lookup, canonical dataset listing, free private previews, and sealed credential minting.

Enables AI assistants to automatically integrate Divvi referral tracking into JavaScript/TypeScript blockchain applications by guiding them through SDK installation, transaction modification, and implementation of referral submission following official best practices.

Enables AI applications to interact with the COTI blockchain for private token operations, including deployment and management of private ERC20 tokens and ERC721 NFTs using COTI's Multi-Party Computation (MPC) technology.

An MCP server that classifies Polymarket wallets as human or bot, scores their trading edge from 0–10, and streams current open positions.

Read-only Tendermint/Cosmos blockchain query for agents, with 10 pre-configured mainnets and custom RPC support.

Enables AI agents to check their wallet address and USDC balance, preview the cost of an x402 call, and pay for API requests in USDC on Base without an account or API key. Spend caps, allow-lists and blocked contracts are enforced in code before anything is signed, so a prompt injection cannot bypass them.