NOTICE: deprioritizing this until next month. Working on two other SEPs with higher priority. Will eventually come back to this and write up a clearer example than Python's "FastMCP" for skippable init in TS or Java.

One word change:

The initialization phase MUST be the first interaction between client and server.

to

The initialization phase MAY be the first interaction between client and server.

...to account for SDKs skipping initialization for stateless interaction cases [ref]. In the referenced case, the Python SDK's "FastMCP" server serves requests without associating it with any session.

Motivation and Context

I imagine we all hope to see more guidance for stateless behavior going forward.

How Has This Been Tested?

generated & checked

Breaking Changes

N/A

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation update

Checklist

• I have read the MCP Documentation
• My code follows the repository's style guidelines
• New and existing tests pass locally
• I have added appropriate error handling
• I have added or updated documentation as needed

Additional context

N/A