Supabase Claude Connector

A connector is a connection to data, not a magic button. It tells Claude where to read. Whether the output is useful still depends on what you ask and how you check the result.

Supabase is the open-source Firebase alternative that pairs Postgres with auth, storage, edge functions, and realtime under one roof. The Claude connector exposes that stack as a query layer, so the question “which queries are slowing the app and what indexes would help” becomes a one-prompt answer instead of digging through pg_stat_statements by hand.

What is the Supabase Claude connector?

The Supabase Claude connector is a permission-controlled bridge to your Supabase organization. It uses OAuth and respects Supabase’s project-level permissions. Read access covers database schemas, query data, auth users, storage buckets, edge functions, RLS policies, and logs. Write actions (run SQL, modify schema, deploy functions) require explicit scope.

What can Supabase do once Claude is connected?

• Read database schemas and data. Pull table structure, indexes, foreign keys, row counts.
• Read auth users and providers. Pull user list, sign-up trends, provider distribution.
• Read storage buckets and policies. Inventory buckets, files, RLS policies.
• Read edge function logs. Pull invocation history and errors for deployed functions.
• Run SQL with write scope. Execute migrations or data-fixes with the write scope.
• Cross-connector with GitHub. Pull a Supabase migration plus the source PR, draft the deploy plan.

How do I add the Supabase connector?

1. In Claude, open the toolbox in the bottom-left, click Customize, then Connectors.
2. Click the +, then Browse connectors.
3. Find Supabase in the directory. Click + on the card.
4. The Supabase OAuth flow opens. Sign in. Approve read scopes for projects, database, auth, storage. Add write scopes only if you want Claude to run migrations or modify data.
5. Test: “Show me my projects and the largest tables in each.” If they come back, Supabase is live.

Supabase’s permission model is project-based. The connector respects whatever access your user has across organizations and projects. For teams shipping production apps, never grant write scope from a non-production seat; use a dedicated migration role with audit logging enabled.

Standout prompts for Supabase

These are the prompts that exploit Supabase’s specific capability rather than treating Claude like a generic chat tool. Copy, paste, modify the specifics.

• Schema Audit. Reads database schema for a project, surfaces tables missing indexes on filtered columns, foreign keys with no matching index, and columns that should be NOT NULL. Drafts the migration plan.
• Slow Query Diagnosis. Reads query performance data from pg_stat_statements, surfaces top 10 slowest queries, drafts per-query optimization recommendations (index, query rewrite, materialized view).
• Auth User Activity Review. Reads auth.users over past 30 days, surfaces sign-up trends, drop-offs at email confirmation, suspicious sign-up patterns. Drafts the per-week summary.
• RLS Policy Review. Reads Row Level Security policies across tables, surfaces tables with missing or overly permissive policies, drafts the tightening recommendations.
• Storage Bucket Cleanup. Reads storage buckets, surfaces buckets with stale objects, mis-configured public access, or runaway size growth. Drafts the cleanup batch.
• Edge Function Performance Brief. Reads edge function invocation data, surfaces functions with high error rate or cold-start latency, drafts the optimization candidate list.
• Schema-to-Type Generation Audit. For TypeScript apps, reads Postgres schema, drafts the corresponding generated TS types and highlights any drift from the codebase’s existing types.
• Database Size Diagnosis. Reads table sizes and growth rates, surfaces top 5 fastest-growing tables, drafts the partition or archival recommendation.
• Migration Pre-Flight Check. Given a proposed migration, drafts the impact analysis: table-level locks, row counts affected, estimated duration on a table of this size.
• Realtime Subscription Audit. Reads realtime subscriptions in use, surfaces channels with very high message volume, drafts the optimization recommendations.

What are the limits?

• Write actions need explicit scope. Reading is the default. Running SQL or modifying schema requires the write scope you confirm during OAuth.
• Supabase API rate limits. Heavy use can hit Supabase’s per-minute API ceiling. Pace longer audits across batches.
• Per-query row cap. A single query usually returns 1000-5000 rows. For broader analyses, batch or aggregate at the SQL layer.
• Free tier limits. Free Supabase projects have stricter API and database limits. Heavy connector use may require upgrading.

Is the Supabase connector safe?

• For paid Claude plans, Supabase data accessed via the connector is not used to train models and is not retained beyond the request.
• Database tables may contain user PII, payment data, or other sensitive content. Use a read-only role unless you specifically need migration write access; never grant superuser scope.
• SQL writes affect production data. Use draft-then-execute patterns: Claude drafts the migration or fix, an engineer reviews and executes in Supabase Studio with audit logging on.
• Revoke from Claude Settings → Connectors and from Supabase’s Account → Access Tokens.

When does a connector pay off vs. just chatting with Claude?

Connectors earn their setup time when the data updates faster than you can retype it, lives behind login, or runs into the thousands of items. For one-off questions about static information, plain Claude through the chat interface is faster than installing anything. The break-even is usually around the third time you would otherwise be copy-pasting context for the same kind of question. For the full list of connectors and which pillar each belongs to, see the Claude Connectors hub. If a term in this post is unfamiliar, the AI Glossary has plain-English definitions.

Frequently asked questions

Supabase or Firebase or Neon or PlanetScale?

Supabase for Postgres-native apps with auth and storage. Firebase for Google ecosystem and document-database fit. Neon for serverless Postgres with branching. PlanetScale for MySQL with vitess scaling. The Claude connector covers Supabase directly; others may use third-party paths.

Can Claude run destructive SQL?

With write scope and the right role, technically yes. We strongly recommend treating any DROP, DELETE, or ALTER as draft-then-execute: Claude drafts the SQL, an engineer reviews and runs it. Never grant Claude an auto-execute scope on production data.

Does the connector work with self-hosted Supabase?

Yes if your self-hosted instance exposes the management API and you authorize the connector against it. Easier path is using Supabase Cloud.

Can Claude help debug RLS policies?

Yes. Reads the RLS policy plus a sample query, drafts the explanation of why a row is or is not visible to a given role.

Will Claude trigger Supabase notifications?

Standard Supabase notification behavior applies for any write action. Test in a non-production project first.

Can the connector read PostgREST custom RPC functions?

Yes for function metadata and invocation logs. Useful for surfacing which RPCs are most-used and which are stale.

How does this pair with Vercel?

Pair them. Vercel hosts the app; Supabase holds the data. Claude reads both for full-stack issue correlation (slow page, slow query, deploy-time correlation).

Sources

• Anthropic: Introducing Connectors · official launch and partner list
• Supabase API documentation · what the Supabase connector exposes
• Supabase Management API · API surface for the connector
• Anthropic Trust Center · privacy and compliance posture
• Anthropic privacy notice · connector data handling

You might also like

• Claude Connectors Guide (2026) · the master hub
• Claude Connectors for Engineering + DevOps · the pillar this connector belongs to
• Vercel Claude Connector · the deployment-hosting sibling
• GitHub Claude Connector · the source-code sibling
• Claude Code: Complete Guide · the engineering-focused Claude playbook
• How to Use Claude AI · the beginner walkthrough
• Best Claude Prompts: 50 Examples · the broader collection
• Best AI Prompts by Job and Use Case · 60+ prompt packs organized by role and artifact