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Before You Give an AI Agent a Key: What Supabase MCP "Read-Only" Really Means, and a Data Inventory Page

This story is from 2026-10-23. It is preserved in the archive; the latest stories are on the live feed.

You can connect an AI agent straight to your Supabase project through MCP. The connection URL has three knobs that narrow what you hand over, and one of them is called read-only. I wanted to know what each knob changes, and what "read-only" means inside the database. So I flipped the switches, look…

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  1. 2026-10-23 04:05 · DEV Community — AI
    Before You Give an AI Agent a Key: What Supabase MCP "Read-Only" Really Means, and a Data Inventory Page

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