One ledger.
Two ways in.
Puzzle gives teams, developers, and AI tools secure access to a continuously accurate, real-time general ledger. Build with the API. Analyze in plain English with MCP.
7K+
$50B+
7,000+ accounting firms and startups trust Puzzle.
Build better accounting solutions with Puzzle's API.
Access Puzzle's real-time general ledger through developer-friendly APIs. Build dashboards, workflows, and financial applications on top of continuously accurate accounting data.
Use Puzzle's API to build dashboards, workflows, and custom accounting experiences.
Use Puzzle MCP to connect tools like Claude or ChatGPT to your ledger for read-only analysis, reporting, and insights.
Ask your ledger anything.
Connect Claude or ChatGPT to query your books in plain English. No exports, no copy-paste.
Accountants are the architects. AI is the engine.
Three steps to automated, review-ready revenue recognition. Everything logged, sourced, and accountant-reviewed.
1. Add the Puzzle connector
In Claude, go to Customize, then Connectors, then Add custom connector and enter the Puzzle MCP URL: https://mcp.puzzle.io/mcp.
2. Authenticate
Sign in to Puzzle via OAuth and select the company you want to connect. Access is read-only by default.
3. Ask your books
Query your live ledger in plain English. Your AI assistant reads the ledger and answers instantly.
Puzzle connections are permissioned and read-only. AI tools can analyze ledger data, surface insights, and answer questions, but they cannot edit your books. Ask questions. Analyze data. Change nothing.
What partners are building with Puzzle
One click. Instant accounting.
With Brex and Deel, accounting setup goes from weeks to seconds. By embedding Puzzle directly into their platforms, customers automatically sync expenses, payroll, and global contractor data, eliminating manual journal entries and setup friction.
Bookkeeping handled instantly inside Slack.
Central and Puzzle built an AI-powered accounting assistant inside Slack to automate the back office for founders. Setup took just 15 minutes, delivering a fully automated back office.
Forecast-ready books from day one.
Ramp and Puzzle helped accounting firm Parallel deliver faster SaaS forecasting. By combining automated Ramp spend data with Puzzle's real-time ledger, clients got immediate visibility into burn and runway.
Implementation cut from 6h to 1.5h.
Brex and Puzzle helped FinFuego set up accounting in one click and eliminate manual onboarding: saving their operations team 4 hours every single week.
Questions we hear a lot.
Use Puzzle's API to build custom dashboards, automated workflows, and custom accounting experiences directly within your product. Use Puzzle's MCP to securely connect tools like Claude or ChatGPT directly to your live general ledger for read-only analysis, natural-language reporting, and instant financial insights.
The Developer API provides secure access to key accounting resources, including real-time cash flow and burn rate metrics, chart of accounts, transaction histories, journal entries, financial reports (Balance Sheet and Income Statement), and tax-ready summaries.
Puzzle MCP is read-only and re-authenticates every 5 days for security. High-volume usage is rate-limited during the current alpha. If you're hitting limits, contact support@puzzle.io.
No. Every Puzzle MCP connection is strictly read-only and user-permissioned. Your AI assistant can read and analyze your books, but it cannot modify accounting data.
Any tool that supports the Model Context Protocol (MCP) works natively with Puzzle MCP. This includes Claude Desktop, Claude.ai, Cursor, Windsurf, and any custom MCP-compatible clients.
Ready to stop thinking about accounting?
Join thousands of venture-backed startups using Puzzle to keep their books accurate, real-time, and out of the way.