Sheet Ninja turns any Google Sheet into a live API backend for apps built with tools like Lovable, Bolt, Replit, v0, and Cursor. Paste a sheet link, get instant CRUD endpoints, and let your AI coding assistant wire it up using copy-paste prompts. Your data stays in Google Sheets, so non-technical clients can edit rows directly and your app updates instantly. Built for vibe coders shipping MVPs, waitlists, directories, and internal tools without setting up a database.

• Instant API from any Sheet: Paste a Google Sheets link and get live REST endpoints in seconds. Row 1 becomes your schema, rows below become your data.
• Full CRUD support: Read, write, update, and delete rows through the API. Changes reflect in the sheet instantly and vice versa.
• AI coding tool integration: Copy-paste prompts for Claude, ChatGPT, Replit, Lovable, Bolt, v0, and Cursor so your AI assistant knows exactly how to connect.
• Bearer authentication by operation: Control which operations require an API key. Read can stay public while write stays protected, or lock everything down.
• Google OAuth security: Sheets are shared only with the Sheet Ninja service account, so your other files stay private.
• Data ownership stays with you: Your data lives in Google Sheets, not a proprietary database. Edit manually in the sheet or programmatically via API.
• Native Sheets validation: Use built-in Google Sheets features like protected cells, data validation, and dropdowns to enforce rules.
• Documented migration path: Docs help you recreate the API against a production database when you outgrow spreadsheets.

• Zero Backend Setup: Skip database provisioning, ORM configuration, and deployment. You get a working API in the time it takes to paste a link.
• Non-Technical Clients Can Edit Data: Clients update prices, copy, or content directly in Sheets without touching code or waiting on a redeploy.
• Works Well with AI Coding Tools: Copy ready-made prompts for ChatGPT, Claude, Cursor, Replit, Lovable, Bolt, and other AI coding assistants to speed up app development.
• Perfect for Validation and MVPs: Ship waitlists, directories, and prototypes fast to test ideas before investing in real infrastructure.
• Transparent Data: You can see and audit every row, which is useful for moderating user submissions or debugging AI agent memory.

• Limited for High-Traffic Applications: Sheet Ninja is best suited for MVPs, prototypes, internal tools, and lightweight applications. Large-scale apps may eventually need a dedicated database due to Google Sheets size and API limitations.
• Security Trade-offs: Storing sensitive user data in a spreadsheet backend requires careful access control and isn't suitable for regulated data.
• Usage Limits Vary by Plan: Applications with higher API traffic may need to upgrade plans as request volume grows. Subscription tiers include different request allowances and features.
• Migration Required for Production: Successful projects will eventually need to move to a real database, meaning rework down the line.
• Dependent on Google Sheets Uptime: Your app's backend availability is tied to Google's service and API limits.

• Ship a waitlist overnight: Capture email signups from a landing page straight into a Sheet to validate an idea before writing production code. Export the list whenever you're ready to launch.
• Client-editable site copy: Put headlines, prices, and marketing copy in a Sheet so the marketing team can update the live site without engineering tickets or redeploys.
• AI agent long-term memory: Store Q&A pairs and knowledge base rows in a Sheet that your chatbot reads from. When the bot hallucinates, edit the cell to fix it.
• Moderated directories and job boards: Let users submit rows via POST, review them in the Sheet, and display only approved entries on the public site.
• Internal search tools: Sync a master inventory or customer Sheet and give your sales team a read-only mobile app to search records on the go.
• Dynamic menus and catalogs: Restaurants or small shops update prices and items in a Sheet, and QR-code menus or storefronts refresh instantly.