MCP resources, prompts, and subscriptions
A stateless client reads resources and prompts, then opens a filtered subscription response stream.
Addressable context in MCP 2026-07-28
Resources
URI-addressed content
resources/list, resources/read
Prompts
User-selected templates
prompts/list, prompts/get
Tools
Model-selected operations
tools/list, tools/call
subscriptions/listen POST-response stream
1. Client sends explicit notification filter
2. Server acknowledges before the first event
3. Every event carries io.modelcontextprotocol/subscriptionId
server/discover advertises resources + prompts; every request carries version + capabilities