Base has introduced a new protocol called Base MCP that lets AI agents — including those built on ChatGPT and Claude — interact directly with user accounts on the platform. The integration covers swaps, transfers, portfolio management, and access to decentralized applications, effectively giving conversational bots the ability to execute on-chain actions.
What Base MCP Does
MCP, which stands for Model Context Protocol, serves as a bridge between large language models and Base’s smart-contract infrastructure. Once an agent is connected to a user’s Base Account, it can initiate token swaps, send funds to other wallets, rebalance a portfolio, or enter a dApp — all through natural-language conversation. The user doesn’t need to manually approve each transaction in the usual interface; the agent handles the steps after receiving permission.
Base says the protocol is designed to work with any LLM that supports function calling, with ChatGPT and Claude being the first two integrations. The company hasn’t published a list of supported dApps, but the architecture is open enough that developers can plug in any contract.
How the Connection Works
To link an agent, a user grants a session key through their Base Account. That key gives the AI limited, pre-authorized capabilities — for instance, it can move funds only within a set daily limit or interact with a predefined list of contracts. The agent then uses Base MCP to translate a request like “send 0.1 ETH to my savings wallet” into the corresponding transaction data and submit it to the network.
The protocol also supports read operations, so an agent can check balances, transaction history, or portfolio allocations before making a decision. That read-write access is what distinguishes this from earlier, read-only integrations where AI could only display information without acting on it.
Automated portfolio management has long been a goal in decentralized finance, but most tools require users to set up custom scripts or bots. Base MCP lowers the barrier by letting anyone with a ChatGPT or Claude subscription delegate routine tasks to an AI. Someone could, for example, ask the agent to “keep my ETH/BTC ratio above 40%” and let it execute the necessary swaps over time without manual intervention.
The launch comes as both OpenAI and Anthropic push their models toward agentic behavior — the ability to take actions on behalf of a user. Base MCP gives those models a direct pipeline into on-chain finance, a sector where speed and 24/7 operation are critical.
No additional fees or token are required to use the protocol. Base has open-sourced the reference implementation, so other teams can build their own clients or extend the functionality.
Whether the integration gains traction will depend on how well the AI agents handle real-world edge cases — failed transactions, gas price spikes, or unexpected market moves. Base hasn’t released a timeline for additional LLM support, but the protocol is live today for anyone with a funded Base Account and an API key from OpenAI or Anthropic.
