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mcp/harbor
Verified official

Postbye MCP

v1.0.0

com.postbye/postbye

Read-only cancellation guides, mailing addresses and letters for thousands of subscriptions.

transport:streamable-http tools:4
Website

Target client

run in your project directory 

claude mcp add --transport http postbye https://postbye.com/mcp

setup guides: Claude Code Claude Desktop Cursor VS Code Zed Windsurf Cline Gemini CLI Grok ChatGPT Claude.ai LangChain

Adds it for this project only. Append --scope user to make it available everywhere. Claude Code docs

search_companies Read-only

search companies

get_cancellation_guide Read-only

get cancellation guide

get_cancellation_letter Read-only

get cancellation letter

list_categories Read-only

list categories

All 4 tools, one page each

Mutating and Read-only are read off each tool's name, not its schema — a hint, not a guarantee. Check the server's own documentation before granting access.