solana-agent-kit

Install solana-agent-kit with the DeFi plugin, initialize it with a KeypairWallet and RPC URL, then expose its actions as tools to LangChain or Vercel AI SDK. The trade action routes swaps through Jupiter with configurable slippage in basis points.

Install the solana-mcp package and add an mcpServers entry to claude_desktop_config.json with your RPC_URL and SOLANA_PRIVATE_KEY environment variables. After restarting Claude Desktop, tools like BALANCE, TRANSFER, TRADE, and DEPLOY_TOKEN become available.

V2 replaces direct private key input with embedded wallets like Turnkey and Privy, and splits 100+ tools into modular plugins so you load only what you need. This reduces LLM hallucinations and adds human-in-the-loop confirmation support.

Tool hallucination happens when too many tools are loaded or descriptions are vague. Load only the plugins you need, list available tool names explicitly in the system prompt, and lower the LLM temperature for more deterministic tool selection.

Yes, wrap agent execution in a guardrail layer that enforces max transaction value, daily spending caps, token whitelists, and blocked actions. The Skill includes patterns for autonomous loops with error recovery and event-driven triggers via account subscriptions.

Blockhash errors occur when transactions take too long to confirm and the recent blockhash expires. Fetch a fresh blockhash with getLatestBlockhash before sending, and use sendAndConfirmTransaction with retries enabled.