In the 2026-07-28 revision a server that declared the list changed capability SHOULD send the tool list changed notification to clients that have opened a subscriptions listen stream with the tools list changed filter set to true.
fact · verified 2026-09-05
- Vendor
- Model Context Protocol project
- Product
- Model Context Protocol
- Subsystem
- protocol
- Deployment
- not restricted
- Region
- not restricted
- Release range
- specification revision 2026-07-28
- Status
- fact
- Confidence
- 0.90
- Verified
- 2026-09-05
Sources
- Model Context Protocol specification 2026-07-28, Server Features: Tools — Model Context Protocol project · tier 1 standards and regulators · Tools > List Changed Notification
Cite this claim
APA
WarmTransfer. (2026, September 5). The MCP subscriptions listen stream and notification delivery: claim mcpsub-tools-notification-gated. WarmTransfer. https://warmtransfer.net/knowledge/claims/mcpsub-tools-notification-gated
BibTeX
@misc{warmtransfer-claim-mcpsub-tools-notification-gated,
title = {The MCP subscriptions listen stream and notification delivery: claim mcpsub-tools-notification-gated},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/mcpsub-tools-notification-gated},
note = {Claim mcpsub-tools-notification-gated, verified 2026-09-05}
}