Physix Frontier · News Briefing Card (Hacker News · Oct 8, 2026)

SheetRelay turns Google Sheets into a backend for web and AI agents

KEY FACTS

SheetRelay lets users connect a Google Sheet so AI assistants and code can read and write spreadsheet data.
It supports Claude, ChatGPT, and Cursor connecting to and operating on sheets via the MCP protocol.
Each tab has independent read, add, edit, and delete permission toggles, and new tabs default to read-only.
Data is not copied or stored; it is read in real time from the user's Google Sheet on each call.
It offers a free tier plus $9, $29, and $79 monthly plans, tiered by call volume.

KEY DATA

1,000Free tier monthly calls

10,000$9 tier monthly calls

100,000$29 tier monthly calls

500,000$79 tier monthly calls

PHYSIX OBSERVATION

SheetRelay pulls lightweight data storage needs back from databases to spreadsheets, targeting small websites and AI agent scenarios. It does not copy data and offers fine-grained permissions, lowering the barrier for non-technical users to stand up a backend. But spreadsheets have obvious concurrency and performance ceilings, making it suitable only for low-traffic scenarios and unlikely to challenge traditional backends.

Source: Hacker News report