# ChatGPT and Codex Can Now Log In to Probo's MCP — Changelog
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Changelog
](/changelog) August 25, 2026 [ Integrations ](/changelog?tag=Integrations) 
# ChatGPT and Codex Can Now Log In to Probo's MCP

ChatGPT and Codex can connect to Probo over MCP with a real OAuth login instead of a workaround, using resource bound tokens so each connection is scoped to your Probo organization. 

Probo’s [MCP server](/products/ai-agents-for-compliance) now speaks the OAuth dialect that [ChatGPT and Codex](/docs/developers/api/mcp/openai) expect. Both clients negotiate the auth method through CIMD and get issuer identification per RFC 9207, so the connection sets itself up correctly on the first try instead of failing on a mismatched flow.

Access and refresh tokens are bound to your Probo organization as the resource, so a token minted for one org cannot be replayed against another. If you tried connecting ChatGPT or Codex to Probo before and hit a wall, it’s worth trying again.