deepseek-harness-mobile

DSH Mobile is an unofficial companion app for the DeepSeek Harness (MIT), mirroring its web GUI feature-for-feature in the harness's own visual language. Android only, Kotlin + Jetpack Compose.

Its companion on the other end is dsh-relay — a harness plugin that adds the authentication layer the harness says it lacks, so this app can reach a harness with a real credential and a pinned key instead of an open port. See Relay.

dshm.zyphite.com is the project site — what the app is, what it looks like, and how to get it running, on one page.

The wiki is the user-facing guide: getting started, connecting, troubleshooting, a feature tour and an FAQ.

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Screenshots

Connect	Chat	Trajectory
Recent harnesses with live reachability, LAN discovery, manual host:port, auto-connect.	Streamed turns, a glyph per tool, expandable tool cards, permission picker.	The same session as a per-turn ledger with usage totals.

Session details	Subagents
Context breakdown, goal, plan mode, background jobs, queued turns, host info, session-log export.	The subagent catalog — open a child's transcript, follow up, or interrupt it.

Features

• Connect effortlessly — auto-discovers a harness on your Wi-Fi (active subnet scan + readiness handshake), remembers hosts and probes them for liveness on the way in, supports manual host:port entry, loopback for same-device setups, and auto-connect toggles (last used / LAN / same device).
• Discord-style navigation — swipe right from the left edge to open the workspace-grouped chat list, swipe left to close it, swipe left from the right edge for the session details panel.
• Full chat experience — streamed turns with reasoning disclosure, markdown, terminal/diff/read/search/web tool cards, queue dock (edit / remove / steer), history paging, image attachments.
• Slash commands and skills — the composer adjudicates a / line against the session's own command catalog and runs it through the harness's command gateway; anything the catalog does not claim is sent as a prompt, which is how skills are invoked.
• Everything the GUI does — goals (phases, rounds, pause/resume/edit), plan mode + plan review, permission approvals, user questions, todo dock, subagents (catalog, follow-ups, interrupt), background jobs, workflow runs, skills, model selection, agent presets, session search, trajectory ledger, session export, message feedback.
• Notifications — turn complete, goal complete / blocked, review or question waiting for you; background connection via a foreground service.
• Looks like the harness — the exact DeepSeek Harness design tokens (colors, type, radii, disclosure rows, shimmer, ink buttons) with light / dark / system themes.
• 11 languages — English, 中文, हिन्दी, Español, Français, العربية, বাংলা, Português, Русский, اردو, ไทย (RTL aware).

Requirements

• Android 8.0+ (minSdk 26).
• A running DeepSeek Harness (tested against 0.1.1-rc.2).

Quick start

1. Install the latest APK from Releases.

2. Open the app and choose how to connect. The two are not variations of one setting — pick the one that matches what you set up on the computer.

   Relay — encrypted, authenticated, and works from outside your Wi-Fi. Install dsh-relay into the harness web profile:

   dsh plugin --profile web add dsh-relay
   dsh web
   

   Open the printed URL on that computer, set a password, then open /relay/pair. In the app: Relay → Pair a relay, scan the QR. Once every client you use has paired, turn off the relay's compat.addressGrants — nothing here needs it.

   Local network — no setup on the phone, no authentication at all. Apply the one-file LAN patch in harness/README.md, restart dsh web, then tap Scan network. Only on networks you trust.

   Behind your own HTTPS reverse proxy — paste the https:// address into local-network mode. The proxy can forward to loopback, so the harness needs no patch; but it encrypts the link without authenticating anyone. See harness/README.md.

   USB / emulator — dsh web, then adb reverse tcp:3080 tcp:3080, and connect to 127.0.0.1:3080 in local-network mode. No patch needed.

3. Pick a session, chat, and get notified when the harness is done.

If a connect attempt fails, the app names the cause; the wiki's Troubleshooting page is keyed on that exact sentence.

Compatibility & security

• See docs/COMPATIBILITY.md for the harness version matrix and loopback-only surfaces.
• Read docs/SECURITY.md first. The bare harness has no authentication, so local-network mode is for trusted networks only — the app says so on the connect screen for the same reason. Relay mode adds a real credential and a pinned certificate, but authenticating still grants the same power as a shell on that computer, because the agent runs commands there.

Building

./gradlew :app:assembleDebug      # debug APK
./gradlew :app:assembleRelease    # release APK (signed when keystore env is set)

The shipped version comes from the git tag: the release workflow exports DSH_VERSION_NAME from the tag name, and versionCode is derived from it. A local build falls back to the literal in app/build.gradle.kts.

See CONTRIBUTING.md for the development loop against a real harness, the module layout, and the release workflow.

Repository

Path	What
core/	Pure-JVM protocol core: wire DTOs, RPC client, WebSocket downlinks, reconnect loop, session folding, notification classifier
app/	Android UI: screens, discovery/connection, foreground service, notifications, i18n
mock-harness/	Ktor mock of the harness /api server for tests
tools/capture/	Records real harness traffic into conformance fixtures
harness/	Companion patch + guide for LAN mode
—	The relay itself lives in sorsama/deepseek-harness-relay
docs/	Architecture, protocol notes, compatibility, security

License

MIT. Bundled third-party material is listed in THIRD_PARTY_NOTICES.md. The DeepSeek Harness and its brand are property of their respective owners; this project is an independent, community-built remote.