Follow Discord
Sweep 22 Oct 2026 · 21:04Z Build v2.1.309 528 read Stable v2.1.308 Latest v2.1.309 Next v2.1.309 Feeds RSS JSON llms.txt llms-full.txt Unofficial
One change · mcp

Architecture changedspecification/2025-03-26/architecture/index

Nearest release: v2.1.309, published under an hour before this site recorded the change. Shown because the two are within 24 hours of each other. Nothing here says the release caused the edit.

Recorded here
Lines+2added
Lines−2removed
From line 158 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 158, old and new numbered
/
lines
from line 158
158158Each capability unlocks specific protocol features for use during the session. For
159159example:
160160 
161* Implemented [server features](/specification/2025-03-26/server) must be advertised in the
161* Implemented [server features](/specification/2025-03-26/server.md) must be advertised in the
162162 server's capabilities
163163* Emitting resource subscription notifications requires the server to declare
164164 subscription support
165165* Tool invocation requires the server to declare tool capabilities
166* [Sampling](/specification/2025-03-26/client/sampling) requires the client to declare support in its
166* [Sampling](/specification/2025-03-26/client/sampling.md) requires the client to declare support in its
167167 capabilities
168168 
169169This capability negotiation ensures clients and servers have a clear understanding of
Feedback