Roots changedspecification/2026-07-28/client/roots

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Upstream edited this page at 20 Oct 2026 20:02 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 20 Oct 2026 20:07 UTC.

Upstream edited 20 Oct 2026 20:02 UTC

Recorded here 20 Oct 2026 20:07 UTC

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11# Roots

3<div id="enable-section-numbers" />

5<Warning>

6 **Deprecated**: The Roots feature is deprecated as of protocol version

7 `2026-07-28`

8 ([SEP-2577](https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2577)).

9 Under the [feature lifecycle policy](/community/feature-lifecycle), it remains

10 in the specification for at least twelve months after this revision's release

11 before it becomes eligible for removal. New implementations **SHOULD NOT**

12 adopt it; existing implementations **SHOULD** migrate to passing directories

13 or files via tool parameters, resource URIs, or server configuration. See the

14 [deprecated features registry](/specification/2026-07-28/deprecated).

15</Warning>

3> [!WARNING]

5> **Deprecated**: The Roots feature is deprecated as of protocol version

6> `2026-07-28`

7> ([SEP-2577](https://github.com/modelcontextprotocol/modelcontextprotocol/pull/2577)).

8> Under the [feature lifecycle policy](/community/feature-lifecycle), it remains

9> in the specification for at least twelve months after this revision's release

10> before it becomes eligible for removal. New implementations **SHOULD NOT**

11> adopt it; existing implementations **SHOULD** migrate to passing directories

12> or files via tool parameters, resource URIs, or server configuration. See the

13> [deprecated features registry](/specification/2026-07-28/deprecated).

1614

1715The Model Context Protocol (MCP) provides a standardized way for clients to expose

1816filesystem "roots" to servers. Roots inform servers about the directories and files the