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Sweep 22 Oct 2026 · 04:32Z Build v2.1.308 527 read Stable v2.1.308 Latest v2.1.308 Next v2.1.308 Feeds RSS JSON llms.txt llms-full.txt Unofficial
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Lifecycle changedspecification/2025-06-18/basic/lifecycle

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 21:57 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.

Upstream edited
Recorded here
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First seen 26 Aug 2026 this site's first read of the page
Recorded edits3to this page, all time

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146146Key capabilities include:
147147 
148| Category | Capability | Description |
149| -------- | -------------- | ----------------------------------------------------------------------------------------- |
150| Client | `roots` | Ability to provide filesystem [roots](/specification/2025-06-18/client/roots) |
151| Client | `sampling` | Support for LLM [sampling](/specification/2025-06-18/client/sampling) requests |
152| Client | `elicitation` | Support for server [elicitation](/specification/2025-06-18/client/elicitation) requests |
153| Client | `experimental` | Describes support for non-standard experimental features |
154| Server | `prompts` | Offers [prompt templates](/specification/2025-06-18/server/prompts) |
155| Server | `resources` | Provides readable [resources](/specification/2025-06-18/server/resources) |
156| Server | `tools` | Exposes callable [tools](/specification/2025-06-18/server/tools) |
157| Server | `logging` | Emits structured [log messages](/specification/2025-06-18/server/utilities/logging) |
158| Server | `completions` | Supports argument [autocompletion](/specification/2025-06-18/server/utilities/completion) |
159| Server | `experimental` | Describes support for non-standard experimental features |
148| Category | Capability | Description |
149| - | - | - |
150| Client | `roots` | Ability to provide filesystem [roots](/specification/2025-06-18/client/roots) |
151| Client | `sampling` | Support for LLM [sampling](/specification/2025-06-18/client/sampling) requests |
152| Client | `elicitation` | Support for server [elicitation](/specification/2025-06-18/client/elicitation) requests |
153| Client | `experimental` | Describes support for non-standard experimental features |
154| Server | `prompts` | Offers [prompt templates](/specification/2025-06-18/server/prompts) |
155| Server | `resources` | Provides readable [resources](/specification/2025-06-18/server/resources) |
156| Server | `tools` | Exposes callable [tools](/specification/2025-06-18/server/tools) |
157| Server | `logging` | Emits structured [log messages](/specification/2025-06-18/server/utilities/logging) |
158| Server | `completions` | Supports argument [autocompletion](/specification/2025-06-18/server/utilities/completion) |
159| Server | `experimental` | Describes support for non-standard experimental features |
160160 
161161Capability objects can describe sub-capabilities like:
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