paseo/CLAUDE.md

CLAUDE.md

Paseo is a mobile app for monitoring and controlling your local AI coding agents from anywhere. Your dev environment, in your pocket. Connects directly to your actual development environment — your code stays on your machine.

Supported agents: Claude Code, Codex, and OpenCode.

Repository map

This is an npm workspace monorepo:

• packages/server — Daemon: agent lifecycle, WebSocket API, MCP server
• packages/app — Mobile + web client (Expo)
• packages/cli — Docker-style CLI (paseo run/ls/logs/wait)
• packages/relay — E2E encrypted relay for remote access
• packages/desktop — Electron desktop wrapper
• packages/website — Marketing site (paseo.sh)

Docs

docs/ is the source of truth for system-level and process-level knowledge. "The docs", "check the docs", or "check the X docs" always mean this directory — not the web. Look here before fetching anything online; the docs capture gotchas and conventions you cannot derive from the code or external sources.

At the start of non-trivial work, list docs/ and skim anything relevant to the task. When you learn something meta worth preserving — a gotcha, a convention, a workflow, a piece of system context that will outlive the current task — update an existing doc or propose a new one. Code-level facts belong in inline comments next to the code; system, process, and gotcha-level facts belong in docs/.

Doc	What's in it
docs/product.md	What Paseo is, who it's for, where it's going
docs/architecture.md	System design, package layering, WebSocket protocol, agent lifecycle, data flow
docs/agent-lifecycle.md	Agent states, parent/child relationships, archive semantics, tabs vs archive, subagents track
docs/data-model.md	File-based JSON persistence, Zod schemas, atomic writes, no migrations
docs/glossary.md	Authoritative terminology — UI label wins, no synonyms
docs/coding-standards.md	Type hygiene, error handling, state design, React patterns, file organization
docs/design.md	Theme tokens — colors, fonts, spacing, radii, icons
docs/unistyles.md	Unistyles gotchas — useUnistyles() is forbidden, alternatives in order
docs/file-icons.md	Material icon theme integration for the file explorer
docs/providers.md	Adding a new agent provider end-to-end
docs/custom-providers.md	Custom provider config: Z.AI, Alibaba/Qwen, ACP agents, profiles, custom binaries
docs/development.md	Dev server, build sync gotchas, CLI reference, agent state, Playwright MCP
docs/testing.md	TDD workflow, determinism, real dependencies over mocks, test organization
docs/mobile-testing.md	Maestro and mobile test workflows
docs/ad-hoc-daemon-testing.md	Isolated in-process daemon test harness
docs/android.md	App variants, local/cloud builds, EAS workflows
docs/release.md	Release playbook, draft releases, completion checklist
SECURITY.md	Relay threat model, E2E encryption, DNS rebinding, agent auth

Quick start

npm run dev                          # Start daemon + Expo in Tmux
npm run cli -- ls -a -g              # List all agents
npm run cli -- daemon status         # Check daemon status
npm run typecheck                    # Always run after changes
npm run lint                         # Always run after changes
npm run format                       # Auto-format with Biome
npm run format:check                 # Check formatting without writing

See docs/development.md for full setup, build sync requirements, and debugging.

Critical rules

• NEVER restart the main Paseo daemon on port 6767 without permission — it manages all running agents. If you're an agent, restarting it kills your own process.

• NEVER assume a timeout means the service needs restarting — timeouts can be transient.

• NEVER add auth checks to tests — agent providers handle their own auth.

• NEVER run the full test suite locally. The test suites are heavy and will freeze the machine, especially if multiple agents run them in parallel. Rules:

  • Run only the specific test file you changed: npx vitest run <file> --bail=1
  • Never run npm run test for an entire workspace unless explicitly asked.
  • If you must run a broad suite, pipe output to a file and read it afterward: npx vitest run <file> --bail=1 > /tmp/test-output.txt 2>&1 then read the file.
  • Never re-run a test suite that another agent already ran and reported green — trust the result.
  • For full suite verification, push to CI and check GitHub Actions instead.

• Always run typecheck and lint after every change.

• Build workspace packages before diagnosing cross-package type errors. This repo consumes generated declarations across workspaces. If typecheck fails in a package that depends on another workspace (especially CLI depending on server/daemon types), rebuild the owning package first so dist declarations are current:

  • npm run build:daemon — rebuild highlight, relay, server, and CLI when daemon/server/CLI types may be stale.
  • Do not patch inferred callback parameters or add local duplicate types just to silence stale declaration errors.

• Run npm run format before committing. This repo uses Biome for formatting. Do not manually fix formatting — let the formatter handle it.

• Always use npm scripts for linting and formatting. Do not run tools directly with npx eslint, npx oxfmt, npx oxlint, or package-local binaries. For targeted checks, pass file paths through the npm script:

  • npm run lint -- packages/app/src/components/message.tsx
  • npm run format:files -- CLAUDE.md packages/app/src/components/message.tsx

• The protocol stays backward-compatible. Features don't have to. Two separate contracts:

  • Protocol contract (always): schema changes must not break parsing in either direction. An old client must still parse messages from a new daemon; a new daemon must still parse messages from an old client.
    • New fields: .optional() with a sensible default or .transform() fallback.
    • Never flip optional → required, remove fields, or narrow types (string → enum, nullable → non-null).
    • Removed fields stay accepted (we stop sending them, not stop reading them).
    • Test with: "does a 6-month-old client still parse this?" and "does a 6-month-old daemon still send something this client accepts?"
  • Feature contract (per-feature): a new feature may require a new daemon capability. The client detects whether the capability is present and either runs the feature or shows "Update the host to use this." That's it.
    • No fallback paths. Don't write a degraded version of a new feature that runs on old daemons. Don't fan out across legacy RPCs to simulate a missing capability. The user upgrades or doesn't get the feature.
    • No defensive branches scattered through the feature. Capability detection happens in one place; downstream code reads a clean shape.
    • Capability flags live in server_info.features.* with a single // COMPAT(featureName): added in v0.1.X, drop the gate when floor >= v0.1.X comment marking the cleanup site.
    • Existing functionality keeps working across versions — that's the protocol contract doing its job. New-feature degradation is not the goal.

• All back-compat shims are tagged and dated for cleanup. Every shim that exists for old-client/old-daemon support carries a COMPAT(name) comment with the version it was added in and a target removal date (typically 6 months out). One grep — rg "COMPAT\(" — should produce the full list of cleanup work. Don't bury back-compat in untagged ??-fallbacks or optional-chain tunnels — that's how it stops being deletable.

Platform gating

The app runs on iOS, Android, web (browser), and web (Electron desktop). Code is cross-platform by default. Gate only when you must. Import gates from @/constants/platform.

The four gates

Gate	Type	When to use
isWeb	constant	DOM APIs — document, window, <div>, addEventListener, ResizeObserver. This is the exception, not the default.
isNative	constant	Native-only APIs — Haptics, StatusBar.currentHeight, push tokens, camera/scanner, expo-av.
getIsElectron()	cached fn	Desktop wrapper features — file dialogs, titlebar drag region, daemon management, app updates, dock badges.
useIsCompactFormFactor()	hook	Layout decisions — sidebar overlay vs pinned, modal vs full screen, single-panel vs split. From @/constants/layout.

Decision matrix

I need to...	Use
Access DOM (document, window, <div>, addEventListener)	if (isWeb)
Use a native-only API (Haptics, push tokens, camera)	if (isNative)
Use an Electron bridge (file dialog, titlebar, updates)	if (getIsElectron())
Switch layout between phone and tablet/desktop	useIsCompactFormFactor()
Show something on hover, always-visible on native	isHovered || isNative || isCompact (hover only works on web)
Gate to iOS or Android specifically	Platform.OS === "ios" / Platform.OS === "android" (rare, keep inline)

Rules

• Default is cross-platform. Don't gate unless you have a specific reason.
• Prefer Metro file extensions over if statements. When a module has fundamentally different implementations per platform, use .web.ts / .native.ts file extensions instead of runtime if (isWeb) branches. Metro resolves the correct file at build time — the unused platform code is never bundled. Reserve if (isWeb) for small, inline checks (a single line or a few props). If you find yourself writing a large if (isWeb) { ... } else { ... } block, split into separate files instead.

  hooks/
    use-audio-recorder.web.ts    ← uses Web Audio API
    use-audio-recorder.native.ts ← uses expo-audio
  

  Import as @/hooks/use-audio-recorder — Metro picks the right file automatically.
• Use .electron.ts / .electron.tsx for Electron-only web modules. Electron is still the Metro web platform, but desktop dev/build sets PASEO_WEB_PLATFORM=electron, so Metro first looks for .electron.* files and falls back to normal .web.* files. Use this when the implementation depends on Electron-only behavior such as webviewTag, desktop preload APIs, or the Electron bridge. Keep plain browser web in .web.*, and keep native fallbacks in the base file or .native.*.

  components/
    browser-pane.electron.tsx ← Electron <webview> implementation
    browser-pane.web.tsx      ← plain web fallback
    browser-pane.tsx          ← native fallback
  

  Import as @/components/browser-pane — Electron desktop gets the .electron.tsx file, browser web gets .web.tsx, and native gets the native/base implementation.
• NEVER use raw DOM APIs without isWeb guard. DOM APIs crash native. Casting a RN ref to HTMLElement is a red flag — ensure the block is web-only.
• NEVER use onPointerEnter/onPointerLeave. They don't fire on native iOS.
• Hover only works on web. React Native's onHoverIn/onHoverOut on Pressable does NOT fire on native iOS/iPad — the underlying W3C pointer events are behind disabled experimental flags. For hover-to-show UI (kebab menus, action buttons), use isHovered || isNative || isCompact so the controls are always visible on native and hover-to-show on web.
• Don't use Platform.OS as a proxy for layout capabilities. Use breakpoints for layout decisions, not platform checks.
• Import isWeb/isNative from @/constants/platform. Never write const isWeb = Platform.OS === "web" locally.

Debugging

Find the complete daemon logs and traces in the $PASEO_HOME/daemon.log