Custom RequestTimeout annotation in Tool

[ketangupta221]

Pre-submission Checklist

• I have verified this would not be more appropriate as a feature request in a specific repository
• I have searched existing discussions to avoid duplicates

Your Idea

MCPSchema already support annotations but it currently doesn't have any annotation for RequestTimeout. We want to have custom timeouts configured for each tool as we require some tools to have lower latencies compared to others. This will allow us to have tool level timeouts and increase system efficiency while interacting with our MCP server.

Scope

• Protocol Specification
• SDK Features
• Documentation
• Developer Experience
• Other

[debanshuk]

This feature is particularity useful for Tools with high latencies, such as agentic Tools (Tools which invoke an LLM agent to do processing), Tools which return files or larger data, etc. Currently clients need to guess the latency of a Tool or determine it by testing. With this feature implemented, clients will be able to programmatically determine the latency timeout for a Tool and will be able to act accordingly.