--- title: "MCP servers: OAuth without client registration | Agent MCP Directory" description: "16 MCP endpoints with OAuth without client registration, as seen by a read-only connector on 4 November 2026. Each entry shows what the challenge said." canonical: https://agentmcpdirectory.com/directory/auth/oauth site: "Agent MCP Directory" last_updated: 2026-11-05 section: "Directory lists" --- # MCP servers: OAuth without client registration | Agent MCP Directory > 16 MCP endpoints with OAuth without client registration, as seen by a read-only connector on 4 November 2026. Each entry shows what the challenge said. Source: https://agentmcpdirectory.com/directory/auth/oauth Site: Agent MCP Directory Last reviewed: 2026-11-05 # Auth type: OAuth without client registration 16 endpoints use OAuth without client registration: 0 listed tools to a client with no credentials and 16 answered with a sign-in challenge (tools not seen, not counted). Rows run from Andi to Zoom. The server publishes OAuth metadata but no registration endpoint, so a client must be registered by hand or identified by a client ID metadata document. ## Rows | Company | MCP server | CLI | Ora score | OpenAPI | WebMCP | Last verified | | --- | --- | --- | --- | --- | --- | --- | | Andi andiai.com | Sign-in required OAuth; tools not seen, not counted | – | 86 A | yes | no | 2026-11-04 | | Bigdata.com bigdata.com | Sign-in required OAuth; tools not seen, not counted | – | 63 C | – | not read | 2026-11-04 | | Box box.com | Sign-in required OAuth; tools not seen, not counted | – | 80 B | – | no | 2026-11-04 | | Cloudglue cloudglue.dev | Sign-in required OAuth; tools not seen, not counted; endpoint found by subdomain guess; it answered with a sign-in challenge and was not verified | – | 77 B | – | no | 2026-11-04 | | ConfigCat configcat.com | Sign-in required OAuth; tools not seen, not counted; endpoint found by subdomain guess; it answered with a sign-in challenge and was not verified | – | 51 C | – | no | 2026-11-04 | | GitHub github.com | Sign-in required OAuth; tools not seen, not counted | – | 65 C | yes | no | 2026-11-04 | | Githubcopilot githubcopilot.com | Sign-in required OAuth; tools not seen, not counted | – | | – | not read | 2026-11-04 | | HubSpot hubspot.com | Sign-in required OAuth; tools not seen, not counted | @hubspot/cli | 72 B | – | no | 2026-11-04 | | Inttegro inttegro.com | Sign-in required OAuth; tools not seen, not counted | – | | – | not read | 2026-11-04 | | Microsoft 365 cloud.microsoft | Sign-in required OAuth; tools not seen, not counted | – | | – | no | 2026-11-04 | | Pantheon pantheon.io | Sign-in required OAuth; tools not seen, not counted; endpoint found by subdomain guess; it answered with a sign-in challenge and was not verified | – | 61 C | – | no | 2026-11-04 | | Render render.com | Sign-in required OAuth; tools not seen, not counted | – | 82 B | yes | yes | 2026-11-04 | | Sherweb sherweb.com | Sign-in required OAuth; tools not seen, not counted | – | 53 C | – | not read | 2026-11-04 | | Slack slack.com | Sign-in required OAuth; tools not seen, not counted | – | 59 C | – | no | 2026-11-04 | | Uptime.com :) uptime.com | Sign-in required OAuth; tools not seen, not counted; endpoint found by subdomain guess; it answered with a sign-in challenge and was not verified | – | 59 C | – | no | 2026-11-04 | | Zoom zoom.us | Sign-in required OAuth; tools not seen, not counted | – | 61 C | – | no | 2026-11-04 | Ora score is Ora's cached score and grade for the company's domain, read on 5 November 2026 from GET /api/score/{domain}, or from Ora's GET /api/leaderboard of the same day where that was read first (a vendor-published figure). A blank cell means Ora returned no cached score for the domain, or the domain was not read. MCP status - [Verified](https://agentmcpdirectory.com/directory/status/verified/) 263 - [Sign-in required, tools not seen, not counted](https://agentmcpdirectory.com/directory/status/sign-in/) 533 - [Credential wall](https://agentmcpdirectory.com/directory/status/credential-wall/) 19 - [No answer](https://agentmcpdirectory.com/directory/status/no-answer/) 47 - [No tools listed](https://agentmcpdirectory.com/directory/status/no-tools/) 2 - [None found](https://agentmcpdirectory.com/directory/status/none-found/) 472 Auth type - [No authentication](https://agentmcpdirectory.com/directory/auth/none/) 263 - [API key](https://agentmcpdirectory.com/directory/auth/api-key/) 19 - [OAuth with client registration](https://agentmcpdirectory.com/directory/auth/oauth-dcr/) 517 - [OAuth without client registration](https://agentmcpdirectory.com/directory/auth/oauth/) 16 Edition 4 November 2026 Method [How rows are verified](https://agentmcpdirectory.com/method/) Data [CSV and JSON](https://agentmcpdirectory.com/data/) Markdown [This page as markdown](https://agentmcpdirectory.com/directory/auth/oauth/index.md) ## Sources - [Official MCP Registry API](https://registry.modelcontextprotocol.io/v0/servers), read 4 November 2026 - [Ora public leaderboard](https://ora.ai/leaderboard?utm_source=agentmcpdirectory.com&utm_medium=referral&utm_campaign=list), read 4 November 2026 - [Ora leaderboard, GET /api/leaderboard](https://ora.ai/api/leaderboard?utm_source=agentmcpdirectory.com&utm_medium=referral&utm_campaign=list), read 5 November 2026 - [Ora API reference, including GET /api/score/{domain}](https://ora.ai/llms-full.txt?utm_source=agentmcpdirectory.com&utm_medium=referral&utm_campaign=list), read 5 November 2026 Last reviewed 5 November 2026