Base Launches MCP Gateway Letting Claude and ChatGPT Execute Onchain DeFi Actions

Base Deploys MCP Gateway for Claude and Cursor Users to Interact With Onchain Apps

The tool allows users of AI interfaces, including Claude, ChatGPT, and Cursor to initiate blockchain actions through natural language prompts. Portfolio tracking, fund transfers, token swaps, and DeFi interactions are all accessible without leaving the chat environment.

Base MCP uses OAuth 2.1 to authenticate the connection between an AI agent and a user’s Base Account. The server holds no private keys and cannot execute transactions on its own.

When an agent proposes a sensitive action such as a token transfer or swap, it generates a link that opens the Base App. The user reviews simulated asset changes, then confirms or cancels the transaction before anything executes onchain.

Six DeFi protocols are available at launch through ecosystem skill plugins. Morpho and Moonwell cover lending markets, Uniswap and Aerodrome handle swaps and liquidity pools, Avantis supports perpetual trading, and Bankr and Virtuals enable token launches and agent tokens.

Developers can extend the system by writing custom skill plugins using markdown specifications. The specs guide agents on how to call external APIs and hand off unsigned transactions to the user for approval.

Base MCP also supports payments for x402-enabled services, a micropayment standard, along with balance and transaction history lookups across other EVM-compatible chains.

The launch builds on existing Coinbase Developer Platform infrastructure, including Agentkit, embedded wallets, onramp tooling, and x402 payments. A separate Payments MCP product from Coinbase CDP, released earlier this year, targets autonomous agent payments across Base, Polygon, and Solana. Base MCP is aimed specifically at wallet-level actions and DeFi apps within the Base ecosystem.

Base described the product as part of a broader push toward an “agentic onchain economy,” where AI agents function as practical interfaces for DeFi and decentralized applications rather than simple chat tools.

The release generated speculation about a potential BASE token, but no token announcement accompanied the launch. Earlier Base MCP server code published on Github has since been deprecated and replaced by the current integration.

Setup requires installing Base MCP in any MCP-compatible AI client and authenticating with a Base Account. From there, users interact with the blockchain directly through their existing AI tools.

The product reduces friction for users who want onchain access without switching between multiple applications. It keeps the approval authority with the user at every step. Base has indicated that additional skill plugins and ecosystem integrations are planned, and it encouraged builders to develop their own using the published specification framework.

Base’s move comes at a time when agentic AI applications geared toward the crypto industry are being built at a feverish pace.