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HomeDocsModel Context Protocol 28 Sep 2026
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Extension Support Matrix changedextensions/client-matrix

Nearest release: v2.1.284, published 4 hours before upstream edited the page. Shown because the two are within 24 hours of each other. Nothing here says the release caused the edit.

Upstream edited this page at 28 Sep 2026 21:56 UTC, give or take a minute or two: the time comes from Anthropic’s own sitemap rather than from a commit. This site recorded the change at 28 Sep 2026 22:07 UTC.

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1414 
1515## Extension overview
1616 
17| Extension | Identifier | Description |
18| ------------------------------------------------------------------------------------- | ---------------------------------------------------------- | ---------------------------------------------------------------- |
19| [MCP Apps](/extensions/apps/overview) | `io.modelcontextprotocol/ui` | Interactive HTML interfaces rendered inline in the conversation |
20| [OAuth Client Credentials](/extensions/auth/oauth-client-credentials) | `io.modelcontextprotocol/oauth-client-credentials` | Machine-to-machine auth without interactive user login |
21| [Enterprise-Managed Authorization](/extensions/auth/enterprise-managed-authorization) | `io.modelcontextprotocol/enterprise-managed-authorization` | Centralized access control via enterprise IdP |
22| [Skills over MCP](/extensions/skills/overview) | `io.modelcontextprotocol/skills` | Discover skills and read their instructions and supporting files |
17| Extension | Identifier | Description |
18| - | - | - |
19| [MCP Apps](/extensions/apps/overview) | `io.modelcontextprotocol/ui` | Interactive HTML interfaces rendered inline in the conversation |
20| [OAuth Client Credentials](/extensions/auth/oauth-client-credentials) | `io.modelcontextprotocol/oauth-client-credentials` | Machine-to-machine auth without interactive user login |
21| [Enterprise-Managed Authorization](/extensions/auth/enterprise-managed-authorization) | `io.modelcontextprotocol/enterprise-managed-authorization` | Centralized access control via enterprise IdP |
22| [Skills over MCP](/extensions/skills/overview) | `io.modelcontextprotocol/skills` | Discover skills and read their instructions and supporting files |
2323 
2424## Support matrix
2525 
26| Client | [MCP Apps](/extensions/apps/overview) | [OAuth Client Credentials](/extensions/auth/oauth-client-credentials) | [Enterprise Auth](/extensions/auth/enterprise-managed-authorization) | [Skills](/extensions/skills/overview) |
27| ------------------------------------------------------------------------ | :-----------------------------------: | :-------------------------------------------------------------------: | :------------------------------------------------------------------: | :----------------------------------------------------------------------------------------------------------------------: |
28| [Claude (web)](https://claude.ai) | <CHECK /> | | | |
29| [Claude Desktop](https://claude.ai/download) | <CHECK /> | | | |
30| [VS Code GitHub Copilot](https://code.visualstudio.com/) | <CHECK /> | | | |
31| [Microsoft 365 Copilot](https://www.microsoft.com/microsoft-365-copilot) | <CHECK /> | | | |
32| [Goose](https://block.github.io/goose/) | <CHECK /> | | | |
33| [Postman](https://postman.com) | <CHECK /> | | | |
34| [MCPJam](https://www.mcpjam.com/) | <CHECK /> | | | |
35| [ChatGPT](https://chatgpt.com/) | <CHECK /> | | | [Partial](https://developers.openai.com/plugins/build/mcp-server#import-skills-from-the-mcp-server) |
36| [Cursor](https://cursor.com/) | <CHECK /> | | | |
37| [Archestra.AI](https://www.archestra.ai/) | <CHECK /> | | <CHECK /> | |
38| [PostHog Code](https://posthog.com/code/) | <CHECK /> | | | |
39| [fast-agent](https://github.com/evalstate/fast-agent) | | | | [Partial](https://github.com/evalstate/fast-agent/blob/main/docs/docs/mcp/skills-over-mcp.md) |
40| [MCP Inspector](https://github.com/modelcontextprotocol/inspector) | | | | [Partial](https://github.com/modelcontextprotocol/inspector/blob/main/clients/cli/README.md#skill-verification---verify) |
26| Client | [MCP Apps](/extensions/apps/overview) | [OAuth Client Credentials](/extensions/auth/oauth-client-credentials) | [Enterprise Auth](/extensions/auth/enterprise-managed-authorization) | [Skills](/extensions/skills/overview) |
27| - | :-: | :-: | :-: | :-: |
28| [Claude (web)](https://claude.ai) | <CHECK /> | | | |
29| [Claude Desktop](https://claude.ai/download) | <CHECK /> | | | |
30| [VS Code GitHub Copilot](https://code.visualstudio.com/) | <CHECK /> | | | |
31| [Microsoft 365 Copilot](https://www.microsoft.com/microsoft-365-copilot) | <CHECK /> | | | |
32| [Goose](https://block.github.io/goose/) | <CHECK /> | | | |
33| [Postman](https://postman.com) | <CHECK /> | | | |
34| [MCPJam](https://www.mcpjam.com/) | <CHECK /> | | | |
35| [ChatGPT](https://chatgpt.com/) | <CHECK /> | | | [Partial](https://developers.openai.com/plugins/build/mcp-server#import-skills-from-the-mcp-server) |
36| [Cursor](https://cursor.com/) | <CHECK /> | | | |
37| [Archestra.AI](https://www.archestra.ai/) | <CHECK /> | | <CHECK /> | |
38| [PostHog Code](https://posthog.com/code/) | <CHECK /> | | | |
39| [fast-agent](https://github.com/evalstate/fast-agent) | | | | [Partial](https://github.com/evalstate/fast-agent/blob/main/docs/docs/mcp/skills-over-mcp.md) |
40| [MCP Inspector](https://github.com/modelcontextprotocol/inspector) | | | | [Partial](https://github.com/modelcontextprotocol/inspector/blob/main/clients/cli/README.md#skill-verification---verify) |
41| [mcpc MCP CLI](https://github.com/apify/mcpc) | | <CHECK /> | <CHECK /> | <CHECK /> |
4142 
4243<Note>
4344 Auth extension support (OAuth Client Credentials and Enterprise-Managed Authorization) is tracked separately from the core MCP authorization features (DCR, CIMD). Check each extension's specification and the [ext-auth repository](https://github.com/modelcontextprotocol/ext-auth) for the latest implementation status.
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