feat: skills as branches, channels as forks
Replace the custom skills engine with standard git operations. Feature skills are now git branches (on upstream or channel forks) applied via `git merge`. Channels are separate fork repos. - Remove skills-engine/ (6,300+ lines), apply/uninstall/rebase scripts - Remove old skill format (add/, modify/, manifest.yaml) from all skills - Remove old CI (skill-drift.yml, skill-pr.yml) - Add merge-forward CI for upstream skill branches - Add fork notification (repository_dispatch to channel forks) - Add marketplace config (.claude/settings.json) - Add /update-skills operational skill - Update /setup and /customize for marketplace plugin install - Add docs/skills-as-branches.md architecture doc Channel forks created: nanoclaw-whatsapp (with 5 skill branches), nanoclaw-telegram, nanoclaw-discord, nanoclaw-slack, nanoclaw-gmail. Upstream retains: skill/ollama-tool, skill/apple-container, skill/compact. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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gavrielc
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---
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name: add-slack
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description: Add Slack as a channel. Can replace WhatsApp entirely or run alongside it. Uses Socket Mode (no public URL needed).
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---
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# Add Slack Channel
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This skill adds Slack support to NanoClaw using the skills engine for deterministic code changes, then walks through interactive setup.
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## Phase 1: Pre-flight
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### Check if already applied
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Read `.nanoclaw/state.yaml`. If `slack` is in `applied_skills`, skip to Phase 3 (Setup). The code changes are already in place.
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### Ask the user
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**Do they already have a Slack app configured?** If yes, collect the Bot Token and App Token now. If no, we'll create one in Phase 3.
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## Phase 2: Apply Code Changes
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Run the skills engine to apply this skill's code package. The package files are in this directory alongside this SKILL.md.
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### Initialize skills system (if needed)
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If `.nanoclaw/` directory doesn't exist yet:
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```bash
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npx tsx scripts/apply-skill.ts --init
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```
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Or call `initSkillsSystem()` from `skills-engine/migrate.ts`.
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### Apply the skill
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```bash
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npx tsx scripts/apply-skill.ts .claude/skills/add-slack
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```
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This deterministically:
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- Adds `src/channels/slack.ts` (SlackChannel class with self-registration via `registerChannel`)
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- Adds `src/channels/slack.test.ts` (46 unit tests)
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- Appends `import './slack.js'` to the channel barrel file `src/channels/index.ts`
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- Installs the `@slack/bolt` npm dependency
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- Records the application in `.nanoclaw/state.yaml`
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If the apply reports merge conflicts, read the intent file:
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- `modify/src/channels/index.ts.intent.md` — what changed and invariants
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### Validate code changes
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```bash
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npm test
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npm run build
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```
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All tests must pass (including the new slack tests) and build must be clean before proceeding.
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## Phase 3: Setup
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### Create Slack App (if needed)
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If the user doesn't have a Slack app, share [SLACK_SETUP.md](SLACK_SETUP.md) which has step-by-step instructions with screenshots guidance, troubleshooting, and a token reference table.
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Quick summary of what's needed:
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1. Create a Slack app at [api.slack.com/apps](https://api.slack.com/apps)
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2. Enable Socket Mode and generate an App-Level Token (`xapp-...`)
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3. Subscribe to bot events: `message.channels`, `message.groups`, `message.im`
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4. Add OAuth scopes: `chat:write`, `channels:history`, `groups:history`, `im:history`, `channels:read`, `groups:read`, `users:read`
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5. Install to workspace and copy the Bot Token (`xoxb-...`)
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Wait for the user to provide both tokens.
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### Configure environment
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Add to `.env`:
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```bash
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SLACK_BOT_TOKEN=xoxb-your-bot-token
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SLACK_APP_TOKEN=xapp-your-app-token
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```
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Channels auto-enable when their credentials are present — no extra configuration needed.
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Sync to container environment:
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```bash
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mkdir -p data/env && cp .env data/env/env
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```
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The container reads environment from `data/env/env`, not `.env` directly.
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### Build and restart
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```bash
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npm run build
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launchctl kickstart -k gui/$(id -u)/com.nanoclaw
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```
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## Phase 4: Registration
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### Get Channel ID
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Tell the user:
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> 1. Add the bot to a Slack channel (right-click channel → **View channel details** → **Integrations** → **Add apps**)
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> 2. In that channel, the channel ID is in the URL when you open it in a browser: `https://app.slack.com/client/T.../C0123456789` — the `C...` part is the channel ID
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> 3. Alternatively, right-click the channel name → **Copy link** — the channel ID is the last path segment
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>
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> The JID format for NanoClaw is: `slack:C0123456789`
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Wait for the user to provide the channel ID.
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### Register the channel
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Use the IPC register flow or register directly. The channel ID, name, and folder name are needed.
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For a main channel (responds to all messages):
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```typescript
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registerGroup("slack:<channel-id>", {
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name: "<channel-name>",
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folder: "slack_main",
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trigger: `@${ASSISTANT_NAME}`,
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added_at: new Date().toISOString(),
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requiresTrigger: false,
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isMain: true,
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});
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```
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For additional channels (trigger-only):
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```typescript
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registerGroup("slack:<channel-id>", {
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name: "<channel-name>",
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folder: "slack_<channel-name>",
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trigger: `@${ASSISTANT_NAME}`,
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added_at: new Date().toISOString(),
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requiresTrigger: true,
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});
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```
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## Phase 5: Verify
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### Test the connection
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Tell the user:
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> Send a message in your registered Slack channel:
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> - For main channel: Any message works
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> - For non-main: `@<assistant-name> hello` (using the configured trigger word)
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>
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> The bot should respond within a few seconds.
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### Check logs if needed
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```bash
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tail -f logs/nanoclaw.log
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```
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## Troubleshooting
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### Bot not responding
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1. Check `SLACK_BOT_TOKEN` and `SLACK_APP_TOKEN` are set in `.env` AND synced to `data/env/env`
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2. Check channel is registered: `sqlite3 store/messages.db "SELECT * FROM registered_groups WHERE jid LIKE 'slack:%'"`
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3. For non-main channels: message must include trigger pattern
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4. Service is running: `launchctl list | grep nanoclaw`
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### Bot connected but not receiving messages
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1. Verify Socket Mode is enabled in the Slack app settings
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2. Verify the bot is subscribed to the correct events (`message.channels`, `message.groups`, `message.im`)
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3. Verify the bot has been added to the channel
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4. Check that the bot has the required OAuth scopes
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### Bot not seeing messages in channels
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By default, bots only see messages in channels they've been explicitly added to. Make sure to:
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1. Add the bot to each channel you want it to monitor
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2. Check the bot has `channels:history` and/or `groups:history` scopes
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### "missing_scope" errors
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If the bot logs `missing_scope` errors:
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1. Go to **OAuth & Permissions** in your Slack app settings
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2. Add the missing scope listed in the error message
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3. **Reinstall the app** to your workspace — scope changes require reinstallation
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4. Copy the new Bot Token (it changes on reinstall) and update `.env`
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5. Sync: `mkdir -p data/env && cp .env data/env/env`
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6. Restart: `launchctl kickstart -k gui/$(id -u)/com.nanoclaw`
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### Getting channel ID
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If the channel ID is hard to find:
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- In Slack desktop: right-click channel → **Copy link** → extract the `C...` ID from the URL
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- In Slack web: the URL shows `https://app.slack.com/client/TXXXXXXX/C0123456789`
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- Via API: `curl -s -H "Authorization: Bearer $SLACK_BOT_TOKEN" "https://slack.com/api/conversations.list" | jq '.channels[] | {id, name}'`
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## After Setup
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The Slack channel supports:
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- **Public channels** — Bot must be added to the channel
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- **Private channels** — Bot must be invited to the channel
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- **Direct messages** — Users can DM the bot directly
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- **Multi-channel** — Can run alongside WhatsApp or other channels (auto-enabled by credentials)
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## Known Limitations
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- **Threads are flattened** — Threaded replies are delivered to the agent as regular channel messages. The agent sees them but has no awareness they originated in a thread. Responses always go to the channel, not back into the thread. Users in a thread will need to check the main channel for the bot's reply. Full thread-aware routing (respond in-thread) requires pipeline-wide changes: database schema, `NewMessage` type, `Channel.sendMessage` interface, and routing logic.
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- **No typing indicator** — Slack's Bot API does not expose a typing indicator endpoint. The `setTyping()` method is a no-op. Users won't see "bot is typing..." while the agent works.
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- **Message splitting is naive** — Long messages are split at a fixed 4000-character boundary, which may break mid-word or mid-sentence. A smarter split (on paragraph or sentence boundaries) would improve readability.
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- **No file/image handling** — The bot only processes text content. File uploads, images, and rich message blocks are not forwarded to the agent.
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- **Channel metadata sync is unbounded** — `syncChannelMetadata()` paginates through all channels the bot is a member of, but has no upper bound or timeout. Workspaces with thousands of channels may experience slow startup.
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- **Workspace admin policies not detected** — If the Slack workspace restricts bot app installation, the setup will fail at the "Install to Workspace" step with no programmatic detection or guidance. See SLACK_SETUP.md troubleshooting section.
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