# `ExGram.Router.Filters.Command`
[🔗](https://github.com/rockneurotiko/ex_gram_router/blob/v0.1.0/lib/ex_gram/router/filters/command.ex#L1)

Built-in filter that matches Telegram command updates.

## Usage

    # Match any command
    filter ExGram.Router.Filters.Command

    # Match a specific command
    filter ExGram.Router.Filters.Command, :start

    # Or using the built-in alias
    filter :command, :start
    filter :command  # matches any command

## Options

- `nil` — matches any command update
- `atom` — matches a specific declared command (e.g., `:start`)
- `string` — matches an undeclared command string (e.g., `"unknown_cmd"`)

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*Consult [api-reference.md](api-reference.md) for complete listing*