Find records faster
Search credential names, aliases, tabs, and supporting notes without manually scanning private documentation.
Private MCP server
Credential lookup for automation that needs the right reference fast.
Castner MCP Credentials provides a private, authenticated lookup surface for credential records, aliases, Google Sheet sync, SQLite mirrors, and fallback reference search.
Keep sources synchronized
Refresh structured sheet records into a local mirror so automation can work from current operational context.
Support MCP workflows
Expose focused tools for lookup, search, existence checks, sync, and controlled updates from authorized clients.
Private credential lookup server, MCP credential search, Google Sheets sync, SQLite mirror, and automation reference discovery
Castner is for teams searching for private credential lookup, MCP credential server, internal secret reference search, Google Sheets credential sync, SQLite credential mirror, operations knowledge base lookup, automation credential discovery, alias search, infrastructure access references, and controlled credential record updates.
Use it when deployment tools, maintenance scripts, internal assistants, or operations workflows need reliable credential context without exposing sensitive records on public pages.