dsh-gap-feed

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A DeepSeek Harness (dsh) plugin that posts a hot-news or reminder card directly into the conversation stream while the agent is thinking for a long time. Low-frequency, never intrusive.

Features

• In-stream injection — when the agent thinks longer than a threshold, the plugin appends an assistant/message directly into the session log (session.append + surfaceOp:'append'), rendered as a card in the conversation stream with a clickable link. If a source fails, it silently degrades — never blocks the conversation.
• Multiple sources — today's hot news from Toutiao (公开 API, no login), trending GitHub repositories (created this week, sorted by stars), and Bilibili's hot ranking. Sources are fetched in parallel; one failing never affects the others.
• In-chat reminders — just say "remind me to have a meeting at 18:00" in the conversation; the model calls the gap_feed_reminder_add tool to save it. Due reminders are prioritized over news.
• Settings page — the dsh settings page renders the gap-feed form automatically from a schema: configure limits, manage reminders (CRUD / enable / done).
• Rate limiting — configurable thinking threshold + cooldown + per-hour cap, so it stays rare and never spams.
• Priority — due reminder > upcoming reminder > news; the same content is never injected twice.
• Persistence-safe — injected messages inherit a valid model source (kind/provider/model) from existing session messages, so the session loads fine after a restart (a forged source is rejected by SessionPersistence validation).

Install

dsh plugin --profile web add dsh-gap-feed

Restart dsh web (or just refresh the page).

Published on npm as dsh-gap-feed — the market prefers prebuilt npm tarballs (no allowBuilds approval needed).

Usage

When does it inject?

All of the following must hold:

1. enabled is true;
2. the agent has been thinking for more than minThinkSeconds (default 20s) without idling — detected by polling the agent registry, so it's robust to event timing;
3. more than cooldownMinutes (default 15) since the last injection;
4. fewer than maxPerHour (default 4) injections in the last hour.

Otherwise it stays silent and does nothing.

In-chat reminders

Say something with a time + a task, for example:

• "提醒我 18:00 开会" / "remind me to have a meeting at 18:00"
• "半小时后提醒我回邮件" / "remind me to reply to emails in half an hour"

The model parses it into text (the task) + dueAt (unix ms timestamp, default = now + 1h) and saves it. Parse failures return a friendly error without blocking the conversation. Due reminders are shown before news on the next injection.

Settings

The dsh settings page automatically renders the gap-feed namespace form. Changes take effect immediately and survive restarts.

Configuration

Key	Type	Default	Description
enabled	boolean	true	Master switch
minThinkSeconds	number	20	Only inject after this many seconds of continuous thinking
cooldownMinutes	number	15	Minimum gap between injections (minutes) — the core rate limiter
maxPerHour	number	4	Per-hour injection cap (safety net)
blacklist	string[]	[]	Title blacklist words; a matching title is filtered out

Defaults live in DEFAULT_CONFIG in src/types.ts.

Reminder storage

$DSH_HOME/profiles/<profile>/data/gap-feed/reminders.json

• DSH_HOME defaults to ~/.dsh;
• JSON array of id / text / dueAt / done / enabled / createdAt; missing dirs are created, and read/write failures or corrupt JSON silently fall back to in-memory state — never throws.

Development

npm install        # dev deps
npm test           # vitest: 67 unit + contract tests
npm run typecheck  # tsc --noEmit
npm run build      # tsc -> dist/ (prepack runs it automatically)

Layering discipline: pure-function layers (decision.ts, picker.ts) have zero dsh dependency and full branch coverage; side-effect layers (news.ts network, reminders.ts file I/O) are mockable via the Source interface; the wiring layer (index.ts) only connects the runtime.

Known limitations

• Bilibili source may be rate-limited (-352) on datacenter IPs; it degrades silently — other sources are unaffected.
• Reminder cards show via the same in-stream card; reminder UI is in the settings page.
• In-session dedup is per-plugin-lifetime (no cross-restart dedup).

License

MIT