Click
The browser-delivered workspace. Click renders panels, workspaces, settings, tasks, approvals, and diagnostics with C++/Dear ImGui compiled to WebAssembly.
Formless stack
Formless is two equal products joined by a typed capability boundary.
Host
The authority. Host owns workspaces, policy, plugin lifecycle, storage, secrets, resource admission, causal traces, and authenticated management.
Panels ask for named capabilities. Click verifies that the panel declared the operation and that the user granted it. Host applies authoritative policy, selects a provider, and communicates with an isolated plugin through HPP/2. Neither a panel nor a plugin receives a general-purpose Host credential.
Choose your path
Section titled “Choose your path”- Using Formless: install Host, open Click, then complete the first experience.
- Operating Host: start with Host overview and plugin lifecycle.
- Building an extension: use choose a runtime before writing code.
- Developing with an agent: connect to Host MCP and use the correlated
paired_click_actionflow.
Mental model
Section titled “Mental model”| Concept | Owned by | Meaning |
|---|---|---|
| Workspace and layout | Host, rendered by Click | Synchronized definitions and active panel instances |
| Panel | Click | A Canvas, daScript, or trusted ABI v2 visual surface |
| Capability | Host policy + broker | A versioned, named operation—not an arbitrary URL or socket |
| Plugin | Host | An immutable OCI image reconciled as an owned generation |
| Scope | Host runtime | The lifetime that owns effects, sockets, leases, and teardown |
| Trace | Host journal | Correlated evidence for lifecycle, policy, calls, and failures |
See the complete architectureFollow a request from panel declaration to isolated plugin and causal evidence.