Source note · Model Context Protocol transports compared
The HTTP+SSE transport from protocol version 2024-11-05 has been deprecated since protocol version 2025-03-26 and is classified as Deprecated under the feature lifecycle policy (SEP-2596), with Streamable HTTP as the migration path and an earliest removal printed as three months after SEP-2596 reaches Final.
Checked 2026-09-30
- Vendor
- Model Context Protocol project
- Product
- MCP specification
- Subsystem
- HTTP+SSE transport
- Deployment
- remote-http
- Region
- not restricted
- Release range
- MCP revision 2026-07-28
- Checked
- 2026-09-30
Sources
- Model Context Protocol specification 2026-07-28, Deprecated Features — Model Context Protocol project · tier 1 standards and regulators · section Deprecated, table row HTTP+SSE transport
Cite this note
APA
WarmTransfer. (2026, September 30). Model Context Protocol transports compared: source note mcp-transport-differences-http-sse-deprecated. WarmTransfer. https://warmtransfer.net/knowledge/claims/mcp-transport-differences-http-sse-deprecated
BibTeX
@misc{warmtransfer-claim-mcp-transport-differences-http-sse-deprecated,
title = {Model Context Protocol transports compared: source note mcp-transport-differences-http-sse-deprecated},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/mcp-transport-differences-http-sse-deprecated},
note = {Source note mcp-transport-differences-http-sse-deprecated, checked 2026-09-30}
}