dsh-context: DSH plugin context visualization guide

The dsh-context DSH plugin renders what the model actually read this turn into a visual view inside DeepSeek Harness — read-only, it never changes what the model receives, but it lets you see how context is assembled, how it evolves, and where it gets compacted (source). This guide covers three things: what problem it solves, how to use the /context command and the Context panel after installing, and its typical uses and limits when chasing context bloat.

What dsh-context does: visualizing DeepSeek Harness context

dsh-context opens up each turn of a DeepSeek Harness conversation: which sections it is made of, how it evolves, where it was compacted, which files were touched, and how agents cooperated. A DeepSeek Harness session assembles the system prompt, history messages, tool results, and projected content into the single input the model truly reads, and that input is normally a black box — you can only guess how large it grew or which section dominates (source). dsh-context exposes it through four surfaces:

1. Context Insights page — cross-session overview: a seven-day token/cost curve, an activity heatmap, a composition ring chart, and session cards. Expected: you can tell which days burned the most and where the money went at a glance.
2. Context tab — view the current session's context sections by structure. Expected: you can pinpoint exactly which section is growing.
3. Context panel — a persistent right-hand panel showing current occupancy in real time. Expected: you watch it while chatting, without switching pages.
4. /context command — pull up context detail straight from the conversation. Expected: you query without leaving the input box.

Note this is not the same question as "why plugins eat context": that one is about the overhead a plugin itself introduces, while dsh-context is about seeing, clearly, context that has already happened. One is cause, the other is observation.

Install the dsh-context DSH plugin: /context and the Context panel

Installing dsh-context follows the standard DSH plugin flow — one command and you are done, with no extra build or restart. It is a purely front-end visualization plugin, introducing no new tools and rewriting no model request, so the bar is low. Steps:

1. Install — run in your terminal:
   bash

   dsh plugin --profile web add dsh-context
   

   Expected: the terminal echoes that the plugin joined the web profile.
2. Update to the latest version (optional):
   bash

   dsh plugin --profile web update dsh-context@latest
   

   Expected: the current newest version is pulled.
3. Open the UI — start dsh web and open http://127.0.0.1:3080 in your browser. Expected: a Context tab appears on the left and the Context panel can be expanded on the right.
4. Try it in a conversation — type /context. Expected: details for the current turn are pulled up directly.
5. Look at the cross-session overview — open the Context Insights page. Expected: you see the seven-day curve, heatmap, and composition ring chart.

You can also skip the command line: search dsh-context on DSH Plugin Hub and use one-click install for the same result.

Where dsh-context fits in DeepSeek Harness, and its limits

The most practical use of dsh-context is triaging "why did context suddenly grow", but it is read-only, so seeing a problem is not the same as fixing it. Three typical scenarios:

1. Triaging context bloat — when a session gets slower and pricier, use the Context tab to see which section is growing: too many tool results, or a stretch of history that never got compacted. Expected: you locate the specific section, then decide what to do.
2. Locating what was compacted — compaction reduces long history to key points; the view shows which stretch was compacted and into what. Expected: you judge whether anything critical was lost.
3. Watching file activity and the agent network — with multiple agents, see who called whom and which files were touched. Expected: you untangle the call chain for one task.

Two limits to remember: first, it is read-only — it will not delete history or cut tokens for you, so reducing load still needs a compaction strategy or a memory plugin; second, it shows the input DeepSeek Harness has already assembled, and does not guarantee the model reads it the way you expect.

Notes when using the dsh-context DSH plugin

1. Version alignment: dsh-context has a minimum supported version; too old a DeepSeek Harness build may refuse to install it or drop UI surfaces, so confirm with dsh --version before upgrading.
2. Read-only by design: it is a diagnostic tool, not a slimming tool; to genuinely save tokens, pair it with a compaction or memory plugin.
3. Data stays local: the visualization reads local session data, so mind where it is stored when sensitive conversations are involved.
4. The panel takes space: a persistent Context panel occupies the right side; on narrow screens you can collapse it without affecting the data.
5. Installed but no UI: first confirm it went into the profile you are actually using (such as web), then refresh; if the UI is still missing, verify compatibility on DSH Plugin Hub.

Sources: dsh-context (DSH Plugin Hub), session subsystem (DeepSeek Harness docs).