dsh-ringcentral

RingCentral Team Messaging IM channel plugin for deepseek-harness (dsh). It turns a RingCentral Bot Add-in into a first-class frontend for a dsh agent: inbound posts from RingCentral chats drive the agent loop, and assistant replies flow back as threaded RingCentral posts.

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Architecture

RingCentral user ──▶ WebSocket (PostAdded) ──▶ im-ringcentral ──▶ ctx.agents ──▶ dsh agent loop ──▶ LLM
                                                │                                     │
                                                └── admission / session / event ◀────┘
                                                     (assistant reply ──▶ RingCentral post, threaded)

The plugin is a pure Cordis plugin following the dsh "Plugins, not loop changes" principle. It speaks the RingCentral Team Messaging v1 REST API + WebSocket subscription stream directly (no external SDK) and reuses the host dsh services for agents, sessions, models, compaction, and tool presentation.

Install

1. Via dsh plugin manager

# install into a profile
npx @deepseek-ai/dsh plugin --profile ringcentral add dsh-ringcentral

# start
export RC_BOT_TOKEN="your-bot-jwt"
export DEEPSEEK_API_KEY="your-deepseek-key"
npx @deepseek-ai/dsh --profile ringcentral

Or run the bundled installer: sh install.sh.

2. Local path

cd /path/to/dsh-ringcentral
pnpm install && pnpm build
npx @deepseek-ai/dsh plugin --profile ringcentral add /path/to/dsh-ringcentral
export RC_BOT_TOKEN="your-bot-jwt"
npx @deepseek-ai/dsh --profile ringcentral

3. --patch development mode

The --patch overlay loads the plugin from a local absolute path without installing it into a profile. Generate the machine-local patch first, then boot:

cd /path/to/dsh-ringcentral
pnpm install && pnpm build        # dist entry (npx dsh cannot resolve .js -> .ts)
node scripts/gen-dev-patch.mjs    # writes cordis.local.yml with the real path
export RC_BOT_TOKEN="your-bot-jwt"
npx @deepseek-ai/dsh web --patch ./cordis.local.yml

Use pnpm dev (tsc --watch) while iterating: the loader hot-reloads the plugin whenever dist/ changes. Pointing the patch at src/index.ts only works inside a deepseek-harness source tree (pnpm dsh), not with the npx-installed package.

RingCentral bot setup

1. Sign in at https://developers.ringcentral.com/.
2. Create an app with the Bot platform type.
3. Grant at least: TeamMessaging, ReadAccounts, WebSocketsSubscription.
4. Install or publish the bot to your RingCentral account.
5. Copy the bot JWT and use it as RC_BOT_TOKEN.

Optional owner credentials (JWT REST API app for your own account, with TeamMessaging + WebSocketsSubscription + ReadMessages) give ringcentral_get_recent_messages owner read fallback and outbound owner fallback. The history tool always reads through the bot client (RC_BOT_TOKEN) first; without owner credentials it uses only the bot client (chats the bot is a member of).

Configuration

Config follows dsh practice: the cordis config tree is the single source (profile cordis.patch.yml / cordis.yml), with Schema defaults applied automatically. The plugin reads environment variables directly only for secrets: RC_BOT_TOKEN, RC_SERVER_URL, RC_USER_CLIENT_ID, RC_USER_CLIENT_SECRET, RC_USER_JWT_TOKEN. To drive any other setting from an environment variable, use cordis ${VAR} interpolation in your config, e.g. dmPolicy: ${RC_DM_POLICY:-pairing}.

Config	Type	Default	Description
botToken	string	required	Bot static JWT (env: RC_BOT_TOKEN)
ownerCredentials.clientId / clientSecret / jwt	string	-	Owner JWT (env: RC_USER_*)
server	string	https://platform.ringcentral.com	API server (env: RC_SERVER_URL)
botExtensionId	string	auto-detected	Bot person id for mention/self-echo detection
dmPolicy	enum	pairing	DM handling: disabled, allowlist, pairing, open
allowFrom	string[]	[]	Stable person ids allowed in DMs; open requires ["*"]
dangerouslyAllowEmailMatching	boolean	false	Match allowFrom against email aliases
groupPolicy	enum	disabled	Team/Everyone handling: disabled, allowlist, open
teams	map	{}	Per-chat Team config: allow, requireMention, systemPrompt, users
groupDmEnabled	boolean	false	Enable Group DM conversations
groupDmChannels	map	{}	Per-chat Group DM allowlist
threadRequireMention	boolean	true	Require mention for thread follow-ups
noThreadChannels	string[]	[]	Chat ids where replies are unthreaded
replyToMode	enum	first	off, first, or all
processingPlaceholder.enabled	boolean	false	Post 👀 → ⏳ while the agent works
processingPlaceholder.editDelaySeconds	number	2	Delay before 👀 becomes ⏳
attachments.enabled / maxCount / maxBytes	-	true / 5 / 5242880	Inbound attachment download
historyMessageLimit	number	250	Default record count for the history tool
homeChannel	string	-	Fallback target for the history tool
requireMention	boolean	true	Global mention gate for Team/Everyone and Group DM (per-chat requireMention overrides)
textChunkLimit	number	4000	Max chars per outgoing post
allowBots	boolean	false	Admit bot-authored inbound posts
provider / model	string	host default	LLM route (fallback chain: per-peer prefs → config → settings.yaml → host)
preset	string	-	Agent preset id
cwd	string	process.cwd()	Agent working directory
sessionIdleTimeout	number	1800000	Idle session eviction (ms)
showToolResults	boolean	false	Show successful tool results (errors always show)
debug	boolean	false	Debug logging

Commands

Command	Description
/new (/reset, /clear)	Start a new session (clear context)
/compact	Compress session history (summary replaces old records)
/model	Show or switch the model
/stop	Abort the current generation
/rc-ping	Connectivity test
/rc-version	Plugin version
/rc-status	Current session status
/rc-help	List all commands

Session routing

sessionKey: ringcentral:<accountScopeKey>:<scope>:<peerId> where scope is direct (peer = person id), group (peer = Group DM chat id), or channel (peer = Team/Everyone chat id), and accountScopeKey is a SHA-256 fingerprint of server + bot token. The SessionId is derived deterministically (SHA-256), so the same user/chat always routes to the same session and survives restarts. Resolution order: in-process reuse → persisted resume → fresh create.

Design principles

• Pure Cordis plugin — follows dsh "Plugins, not loop changes".
• Declarative deps — inject = ['agents']; tools/compaction/presets are optional seams.
• Session isolation — one agent per RingCentral peer.
• Mini-Markdown outbound — replies are converted to RingCentral Mini-Markdown and chunked.
• Threading — replies honor replyToMode with owner fallback and unthreaded retry.
• Idle eviction — inactive agents are disposed automatically.
• Defensive degradation — missing tools/presets/owner credentials never crash the plugin.

Not in v1 (planned follow-ups)

• Adaptive Card / note / calendar / task artifact tools
• Cron and out-of-process notification sender
• Multi-account support
• Native streaming (RingCentral has no stream API; the processing placeholder is the typing affordance)

Local development

pnpm install
pnpm build          # or: pnpm dev (watch)
pnpm test
pnpm typecheck

# run against the npx-installed dsh
export RC_BOT_TOKEN="xxx"
node scripts/gen-dev-patch.mjs
npx @deepseek-ai/dsh web --patch ./cordis.local.yml

cordis.dev.yml is the committed template; scripts/gen-dev-patch.mjs replaces the /path/to/dsh-ringcentral placeholder with the machine's absolute path and writes the gitignored cordis.local.yml.

Troubleshooting

Symptom	Likely cause	Fix
Plugin not starting	RC_BOT_TOKEN missing	Set RC_BOT_TOKEN or botToken in cordis.patch.yml
Bot never replies in a Team	groupPolicy: disabled or no mention	Allowlist the chat under teams and @-mention the bot
DM ignored	dmPolicy or pairing already claimed	Check dmPolicy / allowFrom; pairing is claimed by the first DM sender
History tool returns nothing	Chat not visible to bot or owner	Reads try the bot first, then the owner; pass a bare chat id or channel:<chatId> and make sure one client is a member
Replies not threaded	replyToMode: off or noThreadChannels	Check replyToMode and noThreadChannels
Legacy env rejected	RC_ALLOWED_USER_EMAILS etc.	Behavioral config lives in the cordis config tree now — use allowFrom / teams (see migration errors in logs)

License

MIT