I built a headless accounting API — REST, GraphQL & MCP for AI builders

The problem Every accounting system forces you into their UI. For developers building products, this is a non-starter. You can't embed QuickBooks into your app. You can't build a farming-specific accounting UI. You can't run consolidated financials across 20 LLCs with a tool designed for a single small business. What I built Crane Ledger is a headless accounting API — a full double-entry accounting engine you access via REST, GraphQL, or MCP. No UI attached. Three protocols REST API — Traditional endpoints for accounting operations. CRUD for accounts, transactions, journal entries. GraphQL — Flexible queries for complex financial reports. Pull exactly the data you need. MCP Protocol — This is the fun one. Give Claude, Cursor, or any MCP-compatible AI assistant native access to your accounting engine. Natural language accounting: "Create a journal entry for the $5,000 rent payment" "Show me the P&L for Q1" "Run a consolidated balance sheet across all my entities" Multi-entity support Su