n-cli: Instructions file for Codex

Agents

If a .cursor/rules directory or file exists in this repository, read and follow the rules defined there.

Maintenance: When adding new commands or subcommands, update both AGENTS.md and README.md to reflect the change.

Project Overview

n-cli is a notification CLI tool that lets you send notifications to yourself (desktop, Discord, Slack, custom webhooks) from the command line. A primary use case is getting notified when long-running commands or LLM coding agents finish.

For the full list of commands and configuration options, see README.md.

Folder Structure

cmd/            # Cobra command definitions — one file per top-level command
  setup/        # Subcommands for agent integrations (Cursor, Codex, Claude Code)
  hook/         # Subcommands for processing LLM agent hook events (Cursor, Codex, Claude Code)
  where/        # Subcommands for the `where` command
internal/
  config/       # Config loading and initialisation (viper-based, ~/.n-cli/config.yaml)
pkg/
  notifier/     # Core notification logic — each channel (Discord, Slack, customs, system) has its own file
    marker/     # Tracks command run metrics (duration, exit code) for `n-cli run`
    webhook/    # Shared HTTP webhook utilities
  formatter/    # Message formatting helpers
  monitor/      # Process monitoring utilities

Examples

Adding a new notification channel (e.g. Telegram): add a telegram.go in pkg/notifier/, implement the Notifier interface, and wire it up in pkg/notifier/notify.go alongside the existing channels. Add its config struct to internal/config.

Adding a new top-level command: create cmd/cmd_<name>.go, define a New<Name>Cmd() *cobra.Command function, and register it in cmd/root.go's init().

Adding a new setup subcommand (e.g. for a new agent integration): add a file in cmd/setup/, implement the setup logic there, and register it in cmd/cmd_setup.go's NewSetupCmd().

Adding a new hook subcommand (e.g. for a new agent integration): add a file in cmd/hook/, implement the hook handler there, and register it in cmd/cmd_hook.go's NewHookCmd().