Discovery changedspecification/draft/server/discover

Nearest release: v2.1.305, published under an hour 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 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

Lines+6added

Lines−8removed

From line 1 where the diff opens

First seen 26 Aug 2026 this site's first read of the page

Recorded edits2to this page, all time

The whole hunk

from line 1, old and new numbered

lines

from line 1

11# Discovery

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

53`server/discover` lets a client query a server's supported protocol versions,

64capabilities, and identity before sending any other requests. Servers **MUST**

75implement it.

from line 96

9896* `instructions`: Optional natural-language guidance for LLMs on how to use

9997 this server effectively

10098

101<Note>

102 `serverInfo` is self-reported by the server and is not verified by the

103 protocol. It is intended for display, logging, and debugging. Clients **SHOULD

104 NOT** use it to change their behavior, and **SHOULD NOT** rely on it for

105 security decisions.

106</Note>

99> [!NOTE]

100>

101> `serverInfo` is self-reported by the server and is not verified by the

102> protocol. It is intended for display, logging, and debugging. Clients **SHOULD

103> NOT** use it to change their behavior, and **SHOULD NOT** rely on it for

104> security decisions.

107105