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BriefsToolRolling out1 min read

Supabase adds Claude-issued identity assertions for MCP auth

Supabase adds support for Claude to issue signed identity assertions for Model Context Protocol authentication when identity providers lack extension support.

Supabase adds Claude-issued identity assertions for MCP auth — image from Supabase
Image: Supabase

Summary

Supabase now allows Claude to issue signed identity assertions for its Model Context Protocol server. This removes the requirement for an identity provider to support the MCP Enterprise-Managed Authorization extension. Organizations can configure Claude as the issuer to connect members using their existing roles.

What changed

  • Claude can now issue the signed identity assertion for the Supabase MCP server.
  • Supabase organizations can register Claude as the ID-JAG issuer in the Dashboard SSO settings.
  • Claude checks membership and email address before signing the assertion and sending it to Supabase.

Availability

Rolling out

“- Supabase: generally available to Team and Enterprise organizations with SSO configured. - Claude: the Claude auto-connect beta is open to Claude Team and Enterprise organizations. Any Claude admin can turn it on.”

Founder takeaway

If your identity provider does not support MCP enterprise-managed authorization, you can now use Claude as the issuer to connect Supabase for your team.

Source

SupabaseEnterprise-managed auth for MCP: Claude can now issue the identity assertion

Announced Checked

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