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mcp/harbor
Verified official

Flagbearer MCP

v1.0.1

dev.flagbearer/flagbearer

Feature flags for coding agents: create flags, roll them out gradually and write the flag code.

transport:streamable-http tools:9
View source Website

Target client

run in your project directory 

claude mcp add --transport http flagbearer https://mcp.flagbearer.dev

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

list_organizations Read-only

list organizations

list_applications Read-only

list applications

list_flags Read-only

list flags

create_flag Mutating

create flag

set_flag Mutating

set flag

generate_flag_types

generate flag types

get_user_flags Read-only

get user flags

get_sdk_docs Read-only

get sdk docs

check_sdk_setup Read-only

check sdk setup

All 9 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.