Let your coding agent see the Compose UI it just changed. Start at https://preview.coo.ee/start/ (designing a new screen instead? https://ui.coo.ee/start).

Claude Code:

/plugin marketplace add yschimke/compose-agent-plugins
/plugin install compose-preview@compose-agent-plugins

Codex:

codex plugin marketplace add yschimke/compose-agent-plugins

then enable compose-preview from /plugins.

Antigravity:

curl -fsSL https://raw.githubusercontent.com/yschimke/compose-agent-plugins/main/scripts/antigravity-install.py | python3 -

Any other agent (Gemini CLI, OpenCode, Cursor, Copilot, …), or no plugin system:

curl -fsSL https://raw.githubusercontent.com/yschimke/skills/main/scripts/install.sh | bash

Then ask your agent to render one of your previews. Other hosts and install options.

• VS Code (or Cursor / Windsurf / VSCodium): install Compose Preview from the Marketplace or Open VSX. No project changes.
• CLI: the install.sh one-liner above installs compose-preview; then compose-preview render (every @Preview to PNG) or compose-preview browse. No build edits: it injects itself into projects that already apply com.android.application / com.android.library / org.jetbrains.compose.
• Gradle plugin: version-pinned, on Maven Central. See the Install page for that, CI recipes, and the requirements (Java 17+, Gradle 8.13+, AGP 8.13.0+, Kotlin 2.0.21+).

None of this is required to get value from the tool.

• PR review and preview CI — the apply action posts before/after renders on pull requests; the optional compose-preview-review and compose-preview-ci skills review UI PRs and set that CI up.
• UI Builder — design a new screen with an agent.
• Whole-app simulator — compose-preview launch app.apk, no emulator.
• Data products — structured data alongside each PNG: accessibility findings, layout trees, theme tokens, recomposition heat maps, drawn text, resource captures, and more.
• Agents & MCP — the local and hosted MCP servers and a token-frugal agent loop over Compose UI. The same native MCP process can optionally connect agents to a concurrent preview-server UI-builder session; see the MCP design reference.
• Daemon — an optional long-lived renderer that keeps Robolectric / Compose-Desktop warm so re-renders are fast.

Rendered baselines (PNGs and animation GIFs, regenerated on every push to main) are browsable inline on the compose-preview/main branch — samples:android, samples:wear, samples:cmp, and samples:remotecompose. Source under samples/. The XR renderer and its spatial sample live in compose-preview-xr. The integration matrix also renders the plugin against real-world external Compose projects on every push.

Real-world PRs opened by AI coding agents that used compose-preview to verify their changes.

• yschimke/meshcore-mobile#36 — renders Play Store listing screenshots (phone + 7"/10" tablet) directly from Play Store — … @Preview composables, replacing hand-crafted PNGs.

Have one to add? Open a PR or an issue.

• Documentation site — install, reference, agents & MCP, daemon.
• How it works — discovery, renderer, caching, project structure.
• Configuration-only plugin — commit composePreview { } config to your build without pinning the rendering runtime.
• PR review workflow — reusable, preview-gated AI PR review (Codex / Claude / Gemini).
• Development — building plugin, CLI, and extension from source; testing unreleased builds locally.
• Architecture (contributor) — class-by-class map of the four-stage pipeline.
• Contributor docs index — the full map of the docs/ tree.
• Releases · Changelog · License (Apache 2.0)