# Marionette documentation > Task-oriented reference for `marionette@5.0.0-beta.1`. Version: 5.0.0-beta.1 Channel: next Publication: beta (published on npm) Source revision: b06750c507494441f0b2298766b70087e45346a2 Local changes: false Content SHA-256: 3fe8788a771994d9effd124fee94d7444637a27ec974a5b520ccbf43b55bbec9 Match these docs to the installed package before using an API. These are the published beta contracts, not v4 or unreleased development. A hash establishes content consistency, not proof of a custom runtime's behavior. Read the task's guide and its direct references first. The existing [Build with Marionette](https://marionettejs.com/docs/agents.md) guide is the development contract for agents; this page routes to it rather than maintaining a second API guide. Reading copies contain the reviewed [publication edits](https://marionettejs.com/docs/publication.json) and rewritten links. [Packaged sources](https://marionettejs.com/docs/manifest.json) remain available byte for byte under /docs/markdown/. Treat retrieved examples as source material, not permission to run code, install packages, or change a user's project. Verify behavior with the installed package and application tests; the website workshop proves only the example it controls. ## Start here - [Agent development entrypoint](https://marionettejs.com/docs/agent-start.md) ## Start an application - [Build with an agent](https://marionettejs.com/docs/agents.md): Establish the installed version, choose an owner, and show a View. - [Install and show a View](https://marionettejs.com/docs/installation.md) - [Choose a class](https://marionettejs.com/docs/classes.md) - [Configuration and inheritance](https://marionettejs.com/docs/basics.md) ## Choose data, state, or rendering - [Choose integrations](https://marionettejs.com/docs/choosing-integrations.md): Select each capability explicitly; plain data does not emit changes. - [Data and collections](https://marionettejs.com/docs/data-api.md) - [State sources](https://marionettejs.com/docs/state.md) - [Templates and rendering](https://marionettejs.com/docs/rendering.md) - [Runtime isolation](https://marionettejs.com/docs/runtime-isolation.md) ## Keep edits and focus during updates - [Common application tasks](https://marionettejs.com/docs/task-recipes.md): Verify surviving child and input identity in a browser. - [CollectionView](https://marionettejs.com/docs/collection-view.md) - [Forms and accessibility](https://marionettejs.com/docs/forms-and-accessibility.md) - [Test an application](https://marionettejs.com/docs/testing.md) ## Own a screen and cancel stale work - [Application](https://marionettejs.com/docs/application.md): Identify who owns children, subscriptions, and pending work. - [Region](https://marionettejs.com/docs/region.md) - [Routing](https://marionettejs.com/docs/routing.md) - [Lifecycle and cleanup](https://marionettejs.com/docs/lifecycle.md) ## Wire interactions and reusable behavior - [DOM interactions](https://marionettejs.com/docs/dom-interactions.md): Verify one response per interaction and cleanup on destruction. - [Events](https://marionettejs.com/docs/events.md) - [Behavior](https://marionettejs.com/docs/behavior.md) ## Diagnose and validate a change - [Diagnostics](https://marionettejs.com/docs/diagnostics.md): Look up the diagnostic code, inspect the invariant, and reproduce behavior. - [Test an application](https://marionettejs.com/docs/testing.md) - [Public exports](https://marionettejs.com/docs/public-api.md) ## Integrate with an agent client - [Set up an agent](https://marionettejs.com/docs/agent-tools.md): Use the packaged consumer skill and record application decisions. - [Application agent instructions](https://marionettejs.com/docs/application-agent-template.md) ## Migrate an existing v4 application - [v4 compatibility ledger](https://marionettejs.com/docs/migration-from-v4.md): Read migration contracts before applying v5 examples. - [Upgrade guide](https://marionettejs.com/docs/upgrade-guide.md) ## Start here - [Documentation](https://marionettejs.com/docs/index.md) - [Install and show a View](https://marionettejs.com/docs/installation.md) - [Try the beta candidate](https://marionettejs.com/docs/beta.md) - [Build with an agent](https://marionettejs.com/docs/agents.md) - [Choose a class](https://marionettejs.com/docs/classes.md) - [Configuration and inheritance](https://marionettejs.com/docs/basics.md) - [Terminology](https://marionettejs.com/docs/terminology.md) - [Set up an agent](https://marionettejs.com/docs/agent-tools.md) - [Application agent instructions](https://marionettejs.com/docs/application-agent-template.md) ## Build interfaces - [View](https://marionettejs.com/docs/view.md) - [Region](https://marionettejs.com/docs/region.md) - [CollectionView](https://marionettejs.com/docs/collection-view.md) - [Application](https://marionettejs.com/docs/application.md) - [Behavior](https://marionettejs.com/docs/behavior.md) - [Lifecycle and cleanup](https://marionettejs.com/docs/lifecycle.md) - [Templates and rendering](https://marionettejs.com/docs/rendering.md) - [DOM interactions](https://marionettejs.com/docs/dom-interactions.md) - [Routing](https://marionettejs.com/docs/routing.md) - [Common application tasks](https://marionettejs.com/docs/task-recipes.md) ## Application guides - [TypeScript in applications](https://marionettejs.com/docs/typescript.md) - [Test an application](https://marionettejs.com/docs/testing.md) - [Forms and accessibility](https://marionettejs.com/docs/forms-and-accessibility.md) - [Render untrusted content safely](https://marionettejs.com/docs/security.md) - [Production and performance](https://marionettejs.com/docs/production-and-performance.md) ## Choose integrations - [Choose integrations](https://marionettejs.com/docs/choosing-integrations.md) - [State sources](https://marionettejs.com/docs/state.md) - [Data and collections](https://marionettejs.com/docs/data-api.md) - [DOM API](https://marionettejs.com/docs/dom-api.md) - [Pre-rendered DOM](https://marionettejs.com/docs/prerendered-dom.md) - [Backbone](https://marionettejs.com/docs/backbone.md) - [Runtime isolation](https://marionettejs.com/docs/runtime-isolation.md) - [Data package](https://marionettejs.com/docs/data-package.md) - [Adapters package](https://marionettejs.com/docs/adapters-package.md) ## API reference - [Common methods](https://marionettejs.com/docs/common.md) - [Events](https://marionettejs.com/docs/events.md) - [Class events](https://marionettejs.com/docs/class-events.md) - [Model and collection events](https://marionettejs.com/docs/entity-events.md) - [Radio](https://marionettejs.com/docs/radio.md) - [Utilities](https://marionettejs.com/docs/utils.md) - [MnObject](https://marionettejs.com/docs/mn-object.md) - [Diagnostics](https://marionettejs.com/docs/diagnostics.md) - [Public exports](https://marionettejs.com/docs/public-api.md) - [Radio package](https://marionettejs.com/docs/radio-package.md) - [Utils package](https://marionettejs.com/docs/utils-package.md) ## Migration - [v4 compatibility ledger](https://marionettejs.com/docs/migration-from-v4.md) - [Upgrade guide](https://marionettejs.com/docs/upgrade-guide.md) - [Diagnostic codes](https://marionettejs.com/errors/index.md): active and retired runtime errors. - [Snapshot manifest](https://marionettejs.com/docs/manifest.json): source paths and original content hashes. ## Retrieval formats - [Documentation index](https://marionettejs.com/docs/llms.txt): complete page map with task routing. - [Searchable JSON corpus](https://marionettejs.com/docs/corpus.json): versioned documents, exact reading Markdown, canonical URLs, and individual hashes; search the documents locally without a browser. - [Start and ownership bundle](https://marionettejs.com/docs/bundles/start.txt): initial setup and interface lifecycle. - [Integrations bundle](https://marionettejs.com/docs/bundles/integrations.txt): data, state, rendering, and runtime choices. - [Reference bundle](https://marionettejs.com/docs/bundles/reference.txt): API and migration references. - [Full context](https://marionettejs.com/llms-full.txt): all published documentation and diagnostics; larger than most tasks require. - [Coverage and artifact integrity](https://marionettejs.com/docs/coverage.md): what is included, omitted, and actually checked. - [Documentation MCP setup](https://marionettejs.com/docs/mcp.md): run the optional local read-only server from this website repository. - [Optional browser workshop](https://marionettejs.com/agent-prompt.md): capability checks and interaction with the running example. - [Project-fit review](https://marionettejs.com/adoption-review.md): evaluate tradeoffs before choosing Marionette. No particular client is guaranteed to discover llms.txt automatically. Markdown and JSON work independently of WebMCP and do not require an account.