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Claude MCPB Submission Guide

Purpose

Submit Excel MCP Server to Anthropic’s Claude Directory as an MCPB bundle for one-click installation in Claude Desktop.

Prerequisites

  • MCPB bundle built and validated
  • 512×512 PNG icon available
  • Privacy page published

Required Assets

Build Steps

  1. Run the release workflow to produce the MCPB artifact.
  2. Download the MCPB artifact from the workflow run.
  3. Verify the artifact is the intended .mcpb bundle for submission.

Tool Annotation Requirement

The C# MCP SDK maps tool hints from [McpServerTool] attribute properties:

  • Destructive = true → annotations.destructiveHint = true
  • ReadOnly, Idempotent, OpenWorld map similarly

Nearly all tools set Destructive = true, since Excel automation modifies live workbook state; read-only tools (e.g. screenshot) set Destructive = false.

Submission Form Checklist

Fill the Claude Directory submission form with:

Post-Submission

  • Record submission timestamp and form confirmation URL in the GitHub issue
  • If requested, attach the MCPB bundle and icon to the issue