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Discover, evaluate, and execute yield strategies through natural conversation—with transactions signed locally on your machine.\n\n## Features\n\n- **Multi-chain support** — Base (EVM) and Solana, with more chains coming soon\n- **Local signing** — Private keys never leave your machine\n- **MCP integration** — Works with Claude Desktop and other MCP-compatible clients\n- **Intent execution** — Automatically signs and submits transactions\n\n## Quick Start\n\nAdd the following to your Claude Desktop configuration:\n\n**macOS:** `~/Library/Application Support/Claude/claude_desktop_config.json` \n**Linux:** `~/.config/Claude/claude_desktop_config.json`\n\n```json\n{\n \"mcpServers\": {\n \"blueprint\": {\n \"command\": \"npx\",\n \"args\": [\"-y\", \"@blueprintaix/blueprint-mcp\"],\n \"env\": {\n \"BLUEPRINT_API_KEY\": \"\",\n \"EVM_PRIVATE_KEY\": \"\",\n \"SOLANA_PRIVATE_KEY\": \"\"\n }\n }\n }\n}\n```\n\n## Configuration\n\n| Variable | Required | Description |\n|----------|----------|-------------|\n| `BLUEPRINT_API_KEY` | No | API key for Blueprint services (see below for x402 fallback) |\n| `EVM_PRIVATE_KEY` | One required | Private key for EVM transactions |\n| `SOLANA_PRIVATE_KEY` | One required | Private key for Solana transactions (base58) |\n| `BASE_RPC_URL` | No | Custom Base RPC endpoint |\n| `SOLANA_RPC_URL` | No | Custom Solana RPC endpoint |\n\n> At least one of `EVM_PRIVATE_KEY` or `SOLANA_PRIVATE_KEY` must be provided.\n\n### x402 Payment Fallback\n\nIf no `BLUEPRINT_API_KEY` is provided, the MCP SDK will automatically fall back to using [x402](https://www.x402.org/) for making payments to call tools. Payments are made on **Base** using **USDC**.\n\nWhen using x402 payments, `EVM_PRIVATE_KEY` is required to sign the payment transactions.\n\n## Get an API Key\n\nContact **meet@emberlabs.io** to request a Blueprint API key, or use x402 payments as described above.\n\n## Troubleshooting\n\n**Server doesnt start?** Check the following:\n\n1. **Missing private key for x402** — If using x402 payments (no `BLUEPRINT_API_KEY`), ensure `EVM_PRIVATE_KEY` is set\n2. **Invalid private key format:**\n - `EVM_PRIVATE_KEY` must start with `0x` (66 characters total)\n - `SOLANA_PRIVATE_KEY` must be base58-encoded (~88 characters)\n3. **Cached package issue** — Clear the npx cache and restart:\n ```bash\n rm -rf ~/.npm/_npx\n ```\n\n**Still stuck?** Check the MCP logs in Claude Desktop (~/Library/Logs/Claude/ mcp-server-bp.log)\n\n\n## License\n\nMIT\n","readmeFilename":"README.md"}