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+---
+name: "loc for a specified file — bot command and web UI slash command"
+---
+
+# Story 420: loc for a specified file — bot command and web UI slash command
+
+## User Story
+
+As a developer, I want to send `loc <filepath>` to the bot or use it as a slash command in the web UI to see the line count for a specific file, so I can quickly check how large a file is without leaving my workflow.
+
+## Acceptance Criteria
+
+- [ ] loc <filepath> returns the line count for the specified file
+- [ ] Relative paths are resolved against the project root
+- [ ] If the file does not exist, returns a clear error
+- [ ] Works from all transports (Matrix, WhatsApp, Slack)
+- [ ] Works as a slash command in the web UI
+- [ ] loc with no argument retains existing behavior (top files by line count)
+
+## Out of Scope
+
+- TBD