dsh-system-prompt
dsh-system-prompt is a read-only DeepSeek Harness plugin for inspecting the
effective prompt of a live session.
Its only product behavior is session-scoped prompt inspection.
It owns two browser surfaces:
conversation.view (order: 30): a session inspection tab showing prompt
sections, runtime contexts, variables, tools, and producer-supplied messages.- A
Sections detail tab beside ui-trajectory's system-prompt tabs. It is a
bounded DOM bridge because the upstream trajectory package does not expose a
detail-tab slot.
The host exposes only session on /dsh-system-prompt. The endpoint accepts
{ sessionId }, reads the matching live agent, and returns a small JSON
projection. It never serializes a live Context, Agent, Session, service,
or Cordis object.
Screenshots
The screenshots show the Chinese 系统提示词 conversation tab and 组成部分
trajectory detail tab (English: System Prompt and Sections).
Build
This package follows dsh-plugin-template's self-contained package shape:
npm run typecheck
npm run build
The host and declarations are emitted by tsdown. The browser half is then
written as the Harness window.__ModuleLoader__ closure bundle.
Install the package into a profile with:
dsh plugin --profile web add github:elonnzhang/dsh-system-prompt
The repository commits its lib/ bundle, so this GitHub install does not need
to execute a package build script or modify the profile allowBuilds list.
The bundle extends the Web Connection row's inject with webServer while
keeping its webStartup injection: in 0.2.x, connection.rpc.handle() mounts
the channel on the Connection plugin's own Context
(owner.webServer.register(...)), so the Connection row itself must inject the
web server. (Its config still evaluates ctx.webStartup.trustedHosts.)
For local source development, run npm run build explicitly before testing.
Test with deepseek-harness
For source-level browser testing, link this checkout into the Harness web
profile, then run the plugin watcher and Harness in separate terminals:
# in this repository
npm run dev
# in ../deepseek-harness
pnpm dsh plugin --profile web add link:/Users/elon/code-space/GitHub/dsh-system-prompt
pnpm dsh web --no-open --port 3080
Open the URL printed by dsh web (including its launch token on first
visit); a bare http://127.0.0.1:3080 returns 401 without an existing browser
session. The watcher rebuilds lib/ after changes under
src/ or scripts/; refresh the Harness page when the browser bundle is
reloaded. Verify both the conversation inspection view and the trajectory
System Prompt / Tools / Sections detail flow. For a clean one-off check,
npm test validates types, generated bundles, JavaScript syntax, the smoke
contract, and host RPC runtime checks before starting Harness.
Provenance boundary
There is no ./invariant export: this plugin owns no independent mutable
relationship outside Cordis effects to check.
Prompt, context, variable, and tool ownership is reported at global / preset
/ agent scope. The underlying registries do not retain the registering Fiber,
so this plugin does not claim a more precise plugin-level owner.
