Best Blockchain Platforms for Model Context Protocol (MCP)

CaudexCatena MCP connects supported AI assistants to structured blockchain intelligence through a remote, OAuth-protected MCP endpoint. Instead of switching between raw explorers and disconnected dashboards, a user can ask about an address, transaction, entity, exposure, or cross-chain path from the AI client they already use. The service returns contextual data for wallet triage, counterparty review, fund-flow analysis, risk interpretation, and evidence-aware summaries. Available context can include balances, activity, labels, counterparties, exposures, and cross-chain movements, with confidence and review boundaries kept visible. It is intended for investigators, compliance and risk teams, researchers, journalists, and technical users building repeatable on-chain investigation workflows. Human review remains essential; responses support analysis and case preparation rather than replacing investigative judgment.

SwiftNodes offers a unified API key for multi-chain blockchain RPC access across 128 EVM and non-EVM chains, which includes networks like Ethereum, Base, Arbitrum, BNB Smart Chain, Polygon, Optimism, Solana, TRON, Cosmos, and Bitcoin. The service utilizes HTTPS for endpoints and supports WebSocket on the majority of chains. The pricing structure for monthly plans is determined by the number of requests per second rather than compute units, ensuring that all RPC methods are priced uniformly; thus, methods like eth_getLogs and tracing do not incur higher costs than eth_call. The free tier allows for 2 requests per second and up to 250,000 requests monthly, while subscription plans start at $49 per month for 50 requests per second and escalate to $249 per month for 500 requests per second, which include unlimited request volume, access to archived data, enhanced APIs, and MEV-protected sending options. Customers have the flexibility to pay using either credit cards or cryptocurrencies without the need for KYC verification. Additionally, for developers and AI agents, SwiftNodes features a weekly-updated method-support matrix for each chain, a hosted read-only MCP server included in the official MCP Registry under io.swiftnodes/swiftnodes, and a command-line interface (CLI) to facilitate seamless integration. This comprehensive service aims to streamline blockchain interactions for a diverse range of applications and users.

Base is a secure, cost-effective, and developer-friendly layer 2 solution for Ethereum, designed to usher in the next billion users to the web3 ecosystem. It offers the essential security and scalability required for your decentralized applications, utilizing Ethereum's foundational security while allowing smooth onboarding from Coinbase, Ethereum L1, and other compatible chains. Experience the Ethereum Virtual Machine (EVM) at a reduced cost, and gain early access to advanced Ethereum functionalities like Account Abstraction (ERC4337), alongside straightforward developer APIs for gasless transactions and smart contract wallets. Built on Optimism’s open-source OP Stack, Base provides an effortless way for decentralized applications to tap into the extensive range of products and distribution options from Coinbase. With seamless integrations, easy fiat onramps, and entry into the Coinbase ecosystem—home to 110 million verified users and $80 billion in assets—Base positions itself as a pivotal player in the web3 landscape. The combination of innovative features and robust support makes Base an attractive option for developers looking to create impactful decentralized applications.

Codex serves as an API designed to provide enhanced data related to blockchain and prediction markets. It offers comprehensive insights for over 80 million tokens and 700 million wallets spanning more than 80 networks, including EVM chains and Solana, featuring real-time price updates, visual charts, holder information, balance details, and aggregated analytics with updates in under a second, alongside historical pricing in USD and support for WebSocket and webhook subscriptions. Moreover, Codex aggregates prediction market insights from platforms like Polymarket and Kalshi, presenting them in a unified schema that includes details on events, markets, traders, holdings, live order books, and trade feeds, as well as providing time-windowed statistics and ranking signals such as volume, liquidity, open interest, trade count, and unique trader metrics across various time frames ranging from 5 minutes to one week, which are not typically available via the venue APIs. As a GraphQL API, Codex is conveniently queried directly by most development teams, and it also offers an optional TypeScript SDK for ease of integration. Additionally, there is an MCP server available to assist users in navigating the documentation. Codex features a free tier allowing for 10,000 requests per month, along with usage-based Growth pricing and tailored Enterprise solutions, making it an invaluable tool for developers looking to create trading platforms tailored to their needs. With its extensive capabilities, Codex enhances the trading experience by offering both depth and flexibility in data access.