# Developer tools MCP servers online

Check the source documentation for each connection.

3 MCP servers. Also on the [web page](https://mcpdirectory.fyi/mx/global/online/category/developer-tools).

## MCP servers

1. [Cuba Memorys](https://mcpdirectory.fyi/mx/global/online/cuba-memorys.md), Knowledge and memory, Online: Persistent memory MCP server. 28 tools, BM25+MMR+OOD retrieval, tamper-evident audit, code graph.
2. [Mirror Mcp](https://mcpdirectory.fyi/mx/global/online/mirror-mcp.md), Developer tools, Online: Mirror MCP: Introspection for LLMs
3. [Rails Agent Skills](https://mcpdirectory.fyi/mx/global/online/rails-agent-skills.md), Developer tools, Online: Rails development skills, docs, and workflows exposed through MCP stdio.

## Other categories in Online

- [Knowledge and memory](https://mcpdirectory.fyi/mx/global/online/category/knowledge-memory.md): 1 MCP server
- [Search and research](https://mcpdirectory.fyi/mx/global/online/category/search-research.md): 1 MCP server
- [Web and browser automation](https://mcpdirectory.fyi/mx/global/online/category/web-browser-automation.md): 1 MCP server