Hi team 👋 — I’ve run into the following validation error when using github-mcp-server in conjunction with Claude Code CLI:

After reviewing the official Model Context Protocol (MCP) specification, I found that no 64-character limit is defined for tool names or combined identifiers. This appears to be an implementation-specific constraint within this repo.

🔍 Problem Summary

• The github-mcp-server enforces a 64-character limit on tool names (possibly via schema validation).
• This limit is not part of the MCP spec.
• It creates friction for valid client tools (e.g. Claude Code) that generate descriptive or concatenated tool names.

🛠 Suggestions

1. Remove or relax the 64-character limit
   Unless technically necessary, this constraint should be removed to comply with the MCP spec.

2. Make it configurable
   If the limit is required (e.g. for DB/index safety), allow it to be set via environment variable or config.

3. Document the implementation limit clearly
   Add a note in the README or a dedicated validation section to avoid confusion for tool developers.

4. Improve the error message
   Recommend clarifying that the limit is from this server, not from MCP itself:

   "Tool name exceeds 64-character limit set by github-mcp-server (not MCP spec-defined)"

Thanks for your work on this — happy to help with a PR if the maintainers are open to adjustments!