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SEP-2640: Skills Extension

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#568 1 則留言 2 個 reaction 已指派 1 人 在 GitHub 檢視

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@koic 已經在處理了。

開始於 2026年9月22日。

  • #570 來自 @anirudhmungre —— 已關閉,未合併

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描述

enhancement

Requesting support for SEP-2640 (Skills Extension, Extensions Track, Final), which serves Agent Skills over the existing Resources primitive.

Nothing in the SDK covers it today: no skills/* constants in lib/mcp/methods.rb, no helper module, and no match for skill anywhere under lib/ on main (1.6.0). ROADMAP.md names DPoP, workload identity federation, and the tasks extension as the unimplemented extensions — skills isn't listed.

What a server declaring the extension owes
  • skills/list and skills/get — both MUST
  • resources/directory/read — optional, gated behind directoryRead: true
  • the SEP-2133 capabilities.extensions fragment io.modelcontextprotocol/skills, alongside a declared resources capability
  • on 2026-07-28, skills/list results carry the SEP-2549 ttlMs/cacheScope hints
Prior art in the other official SDKs
  • python-sdk: modelcontextprotocol/python-sdk#3486, modelcontextprotocol/python-sdk#3485
  • typescript-sdk: modelcontextprotocol/typescript-sdk#2798, modelcontextprotocol/typescript-sdk#2818
  • go-sdk: modelcontextprotocol/go-sdk#1238, modelcontextprotocol/go-sdk#1240
  • csharp-sdk: modelcontextprotocol/csharp-sdk#1863, modelcontextprotocol/csharp-sdk#1864
Notes

MCP::Apps looks like the shape this would take: a helper module for an Extensions-Track SEP, with Capabilities#support_extensions for negotiation and the resources primitive underneath.

Most of it can be assembled today from define_custom_method plus resources_read_handler, and a custom method's result does get resultType stamped on the modern path. The SEP-2549 hints don't follow: Server::CACHEABLE_RESULT_METHODS is frozen and consulted internally, so a hand-rolled skills/list has to merge ttlMs/cacheScope into its own result. Worth folding into whatever first-class support lands.

主要語言
Ruby
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1 天 6 小時
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