# API reference Source: https://libtmux.org/en/elixir/latest/reference/ > Types, methods, and functions in libtmux for Elixir. Browse the Elixir types and operations for working with tmux. Start with the core objects below, or search for a type or member. Server 1 type [Server](https://libtmux.org/en/elixir/latest/reference/libtmux-server/) struct 10 members Describes a local tmux server for capturing state and running commands. Session 1 type [Session](https://libtmux.org/en/elixir/latest/reference/libtmux-session/) struct 11 members An immutable session observation with explicit actions. Attachment retains tmux's client count. Window 2 types [Window](https://libtmux.org/en/elixir/latest/reference/libtmux-window/) struct 11 members An immutable physical window with explicit actions, independent of session membership and index. [WindowLink](https://libtmux.org/en/elixir/latest/reference/libtmux-windowlink/) struct 7 members An observed session/index/window binding. Its key is not a link lifetime ID. Pane 1 type [Pane](https://libtmux.org/en/elixir/latest/reference/libtmux-pane/) struct 25 members An immutable physical pane with explicit actions. It belongs to a window; text may be empty. Client 1 type [Client](https://libtmux.org/en/elixir/latest/reference/libtmux-client/) struct 8 members An immutable attached-client observation, keyed by validated client name. Commands 4 types [Command](https://libtmux.org/en/elixir/latest/reference/libtmux-command/) struct 5 members A command value with separate argv and tmux-text renderers. [Deadline](https://libtmux.org/en/elixir/latest/reference/libtmux-deadline/) struct 4 members A node-local monotonic deadline shared by every stage of an operation. [Operation](https://libtmux.org/en/elixir/latest/reference/libtmux-operation/) struct 18 members A retained operation handle pinned to its original owner, tables and epoch. [OneShot](https://libtmux.org/en/elixir/latest/reference/libtmux-transport-oneshot/) module 4 members Executes one explicitly selected executable with bounded captured output. Control mode 2 types [Control](https://libtmux.org/en/elixir/latest/reference/libtmux-control/) struct 20 members A qualified control connection for scoped and managed execution. [Protocol](https://libtmux.org/en/elixir/latest/reference/libtmux-protocol/) struct 7 members Assembles bounded control-mode replies and lexical notifications from bytes. Formats 2 types [Codec](https://libtmux.org/en/elixir/latest/reference/libtmux-codec/) module 4 members Decodes bounded field responses and control-output bytes. [Format](https://libtmux.org/en/elixir/latest/reference/libtmux-format/) module 2 members Constructs literal operands for tmux formats without evaluating their text. Queries 4 types [Filter](https://libtmux.org/en/elixir/latest/reference/libtmux-filter/) struct 11 members A validated portable predicate over one observed entity type. [Schema](https://libtmux.org/en/elixir/latest/reference/libtmux-schema/) module 17 members Defines observed fields, wire names and graph relations. [Selection](https://libtmux.org/en/elixir/latest/reference/libtmux-selection/) struct 13 members An ordered, materialized Enumerable over one captured entity type. [Wire](https://libtmux.org/en/elixir/latest/reference/libtmux-wire/) module 4 members Bounded JSON decoding with duplicate keys preserved until validation. Snapshots 3 types [Capture](https://libtmux.org/en/elixir/latest/reference/libtmux-capture/) module 2 members Builds a bounded one-shot observation of one existing Linux tmux server. [Ref](https://libtmux.org/en/elixir/latest/reference/libtmux-ref/) struct 9 members An exact observed target bound to one server instance. [Snapshot](https://libtmux.org/en/elixir/latest/reference/libtmux-snapshot/) struct 31 members An indexed immutable graph observed over a capture interval. Requests 1 type [Request](https://libtmux.org/en/elixir/latest/reference/libtmux-control-request/) struct 4 members Data for the qualified control lane's supported commands. Errors 4 types [CompletionError](https://libtmux.org/en/elixir/latest/reference/libtmux-action-completionerror/) exception 2 members An action result did not meet an explicit completion requirement. [ExecutionError](https://libtmux.org/en/elixir/latest/reference/libtmux-control-executionerror/) exception 4 members A managed execution reported an error after admission. [ScopeFailure](https://libtmux.org/en/elixir/latest/reference/libtmux-control-scopefailure/) exception 2 members A scoped callback finished, but connection cleanup was not proved. [Error](https://libtmux.org/en/elixir/latest/reference/libtmux-error/) exception 9 members An inspectable failure with its phase and certainty about effects. Constants and enums 1 type [Action](https://libtmux.org/en/elixir/latest/reference/libtmux-action/) module 4 members Shared results for explicit pane, window and session actions. ## By module 4 modules * LibTmux 22 * [Error](https://libtmux.org/en/elixir/latest/reference/libtmux-error/) * [Action](https://libtmux.org/en/elixir/latest/reference/libtmux-action/) * [Capture](https://libtmux.org/en/elixir/latest/reference/libtmux-capture/) * [Codec](https://libtmux.org/en/elixir/latest/reference/libtmux-codec/) * [Format](https://libtmux.org/en/elixir/latest/reference/libtmux-format/) * [Schema](https://libtmux.org/en/elixir/latest/reference/libtmux-schema/) * [Wire](https://libtmux.org/en/elixir/latest/reference/libtmux-wire/) * [Client](https://libtmux.org/en/elixir/latest/reference/libtmux-client/) * [Command](https://libtmux.org/en/elixir/latest/reference/libtmux-command/) * [Control](https://libtmux.org/en/elixir/latest/reference/libtmux-control/) * [Deadline](https://libtmux.org/en/elixir/latest/reference/libtmux-deadline/) * [Filter](https://libtmux.org/en/elixir/latest/reference/libtmux-filter/) * [Operation](https://libtmux.org/en/elixir/latest/reference/libtmux-operation/) * [Pane](https://libtmux.org/en/elixir/latest/reference/libtmux-pane/) * [Protocol](https://libtmux.org/en/elixir/latest/reference/libtmux-protocol/) * [Ref](https://libtmux.org/en/elixir/latest/reference/libtmux-ref/) * [Selection](https://libtmux.org/en/elixir/latest/reference/libtmux-selection/) * [Server](https://libtmux.org/en/elixir/latest/reference/libtmux-server/) * [Session](https://libtmux.org/en/elixir/latest/reference/libtmux-session/) * [Snapshot](https://libtmux.org/en/elixir/latest/reference/libtmux-snapshot/) * [Window](https://libtmux.org/en/elixir/latest/reference/libtmux-window/) * [Window​Link](https://libtmux.org/en/elixir/latest/reference/libtmux-windowlink/) * LibTmux.Action 1 * [Completion​Error](https://libtmux.org/en/elixir/latest/reference/libtmux-action-completionerror/) * LibTmux.Control 3 * [Execution​Error](https://libtmux.org/en/elixir/latest/reference/libtmux-control-executionerror/) * [Scope​Failure](https://libtmux.org/en/elixir/latest/reference/libtmux-control-scopefailure/) * [Request](https://libtmux.org/en/elixir/latest/reference/libtmux-control-request/) * LibTmux.Transport 1 * [One​Shot](https://libtmux.org/en/elixir/latest/reference/libtmux-transport-oneshot/)