Source note · Model Context Protocol transports compared
In Streamable HTTP under MCP revision 2026-07-28, servers running locally SHOULD bind only to localhost (127.0.0.1) rather than all interfaces, and servers SHOULD implement proper authentication for all connections.
Checked 2026-09-30
- Vendor
- Model Context Protocol project
- Product
- MCP specification
- Subsystem
- Streamable HTTP transport security
- Deployment
- remote-http
- Region
- not restricted
- Release range
- MCP revisions 2024-11-05 through 2026-07-28
- Checked
- 2026-09-30
Sources
- Model Context Protocol specification 2026-07-28, Streamable HTTP — Model Context Protocol project · tier 1 standards and regulators · section Security & Endpoint, items 2 and 3
Cite this note
APA
WarmTransfer. (2026, September 30). Model Context Protocol transports compared: source note mcp-transport-differences-http-localhost-auth. WarmTransfer. https://warmtransfer.net/knowledge/claims/mcp-transport-differences-http-localhost-auth
BibTeX
@misc{warmtransfer-claim-mcp-transport-differences-http-localhost-auth,
title = {Model Context Protocol transports compared: source note mcp-transport-differences-http-localhost-auth},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/mcp-transport-differences-http-localhost-auth},
note = {Source note mcp-transport-differences-http-localhost-auth, checked 2026-09-30}
}