The first version-pinned plugin matrix

“Three packages tested” means all three were installed and classified. It does not mean all three passed, and it does not promote untested external features to verified.

Retained lab record

Plugin install, client load, restart, and cleanup

Direct test
HB-DT-PLUGINS-20260818Tested 2026-08-18DSH 0.1.0-rc.7
Vision 0.1.5Load pass0 console errors · 2 starts
Lark 0.2.2Load passexternal messaging Unknown
OOMOL 0.1.4Load failmissing options.key · 2 starts
Operating system
Windows 11 · 10.0.26200 · x64
Runtime
Node v24.11.1 · DSH 0.1.0-rc.7
Isolation
Separate DSH_HOME and web profile for every package
External access
No API key, model call, Lark app, OOMOL key, or real secret
Evidence boundaryVision and Lark are install/UI-load verified only; their external features remain Unknown. OOMOL installed but failed the client loader. Every package was removed from its isolated profile after the run.

From a community error to a tested repair

The report below was valuable because it contained an exact error signature. Its missing environment prevented a verdict, so HarnessBase recreated the smallest versioned matrix instead of copying the suggested conclusion.

Reddit · official embed

Where the error was first reported

Community observed
DeepSeek Harness — one broken plugin can take down the entire plugin system

Posted by u/Potential_Back_4398 in r/DeepSeek

Open the source on Reddit ↗

Source boundary: the post supplied an exact error string, but no DSH version, plugin version, OS, Node version, command, cause, or repair. It was used as a reproduction lead—not as the compatibility verdict.

Reviewed 2026-08-18. The official embed is opt-in third-party content and can reflect source edits or deletion.

Verified version pair repair · powershell
npx @deepseek-ai/dsh@0.1.0-rc.7 plugin --profile web add dsh-deepseek-vision@0.1.5

If—and only if—the command returns ERR_PNPM_ADDING_TO_ROOT, the tested Windows fallback adds -w before the package name. That flag is not presented as a universal requirement.

Plugin evidence finder

Stars describe repository attention, not DSH compatibility. Records below are intentionally conservative; no third-party entry is labeled install-verified until HarnessBase retains a real run.

Official

DeepSeek Harness core

Official

The official product repository and architecture source. Included as the identity baseline, not counted as a third-party plugin.

Install status
Official core
Stars observed
147,866
License
MIT
Repository pushed
2026-08-17
GitHub archived
No
Metadata/test date
2026-08-18
Why this stateCanonical reference for package identity, built-in plugins, current documentation, and preview status.

Permission question: Permission behavior depends on the active sandbox, approval policy, plugins, tools, and task.

Vision

DeepSeek Vision

Direct test

A vision gateway plugin whose rc.7 loader compatibility was tested across two published versions.

Install status
0.1.5 install + UI load verified
Version tested
0.1.4 → 0.1.5
DSH tested
0.1.0-rc.7
Environment
Windows 11 · Node v24.11.1 · isolated web profile
Feature status
Unknown: no API key, image, or vision request
Stars observed
Not used in test result
License
Unknown
Repository pushed
Not part of test
GitHub archived
Not rechecked
Metadata/test date
2026-08-18
Why this state0.1.4 reproduced the missing options.key loader failure. Upgrading the same profile to 0.1.5 loaded the normal UI with zero console errors on two starts.

Permission question: A functional vision test still needs a scoped API credential, one non-sensitive image, and explicit network observations.

Messaging

DSH Lark

Direct test

A Lark/Feishu channel plugin with a published app ID, credential reference, and long-connection configuration path.

Install status
0.2.2 install + UI load verified
Version tested
0.2.2
DSH tested
0.1.0-rc.7
Environment
Windows 11 · Node v24.11.1 · isolated web profile
Feature status
Unknown: no Lark app, secret, or message event
Stars observed
Not used in test result
License
Unknown
Repository pushed
Not part of test
GitHub archived
Not rechecked
Metadata/test date
2026-08-18
Why this statePinned install, config injection, real UI load with zero console errors, a second server start, and cleanup all passed. External messaging remains a separate gate.

Permission question: Real use needs a Lark/Feishu app ID, DSH_LARK_APP_SECRET, and outbound long-connection access. Message permissions and delivery are untested.

MCP integration

DSH OOMOL

Direct test

An OOMOL MCP connector that installs and injects configuration but fails the rc.7 client loader on the tested version.

Install status
0.1.4 installs; client/UI load fails
Version tested
0.1.4
DSH tested
0.1.0-rc.7
Environment
Windows 11 · Node v24.11.1 · isolated web profile
Feature status
Blocked/Unknown: UI failed before normal use
Stars observed
Not used in test result
License
Unknown
Repository pushed
Not part of test
GitHub archived
Not rechecked
Metadata/test date
2026-08-18
Why this stateInstall and config dump passed, but two independent starts produced the same keyed-slot options.key failure. The 0.1.4 bundle registers the slot without key.

Permission question: Published config references OOMOL_MCP_API_KEY, OOMOL_TEAM_NAME, and an external connector endpoint. No credential or hosted MCP call was used.

Interface

DSH Web UI collection

Repository evidence

Repository describing a DSH Web UI plugin and skin collection with task board, git graph, remote UI, token stats, and other extensions.

Install status
Not tested
Stars observed
4,052
License
Apache-2.0
Repository pushed
2026-08-17
GitHub archived
No
Metadata/test date
2026-08-18
Why this stateName and description are DSH-specific, but HarnessBase has not installed or smoke-tested it.

Permission question: Remote UI, repository state, and token-stat surfaces require source and network review before use.

Preset

DSH Anchored Standard

Repository evidence

A two-phase DSH preset described as a minimal bootstrap followed by a fuller standard tool set.

Install status
Not tested
Stars observed
3,397
License
Unknown
Repository pushed
2026-08-17
GitHub archived
No
Metadata/test date
2026-08-18
Why this stateDSH-specific repository identity is visible; exact install, load, and feature status remain unknown.

Permission question: Presets can change tools and permission assumptions; inspect every enabled component.

Desktop

DeepSeek Harness Desktop

Candidate

A third-party desktop solution presented as part of the DSH plugin ecosystem.

Install status
Not tested
Stars observed
11,442
License
MIT
Repository pushed
2026-08-17
GitHub archived
No
Metadata/test date
2026-08-18
Why this statePotentially useful DSH integration, but it must be classified as a plugin, wrapper, or separate host through source inspection.

Permission question: Desktop packaging expands update, filesystem, process, network, and credential trust surfaces.

Design

Open Design

Candidate

A local-first design application that claims support for DSH and many other coding agents.

Install status
Not tested
Stars observed
88,182
License
Apache-2.0
Repository pushed
2026-08-17
GitHub archived
No
Metadata/test date
2026-08-18
Why this stateThe topic tag and product description do not prove a native DSH plugin package.

Permission question: May touch local files and invoke multiple agent CLIs; classification and integration path need inspection.

Prompt management

Voyager

Candidate

A browser enhancement and prompt manager that lists the DSH Web UI among many supported surfaces.

Install status
Not tested
Stars observed
19,581
License
GPL-3.0
Repository pushed
2026-08-16
GitHub archived
No
Metadata/test date
2026-08-18
Why this stateDSH support is claimed, but the repository may be an adjacent browser tool rather than a native plugin.

Permission question: Browser extensions can access page content; review requested browser permissions and data handling.

Context

OpenViking

Candidate

An agent context database tagged in the same topic, with no plugin identity established by the API result alone.

Install status
Not tested
Stars observed
28,865
License
AGPL-3.0
Repository pushed
2026-08-17
GitHub archived
No
Metadata/test date
2026-08-18
Why this statePotential DSH integration is plausible, but topic presence alone is insufficient.

Permission question: Context stores may ingest repository content and persist data; integration and retention need review.

Topic pollution

Reactive Resume

Rejected from plugin set

An open-source resume builder that appears in the dsh-plugin topic results without DSH plugin evidence in its repository summary.

Install status
Not a DSH plugin
Stars observed
40,794
License
MIT
Repository pushed
2026-08-17
GitHub archived
No
Metadata/test date
2026-08-18
Why this stateConcrete example of why topic count and stars cannot be converted into an available-plugin count.

Permission question: Not evaluated because it is excluded from the native plugin dataset.

How a candidate becomes verified

  1. Resolve canonical repository, author, package, license, and installation source.
  2. Review build scripts, credentials, network, filesystem, process, and shell surfaces.
  3. Install in a named DSH, runtime, OS, and date.
  4. Confirm DSH discovers the plugin.
  5. Run one named feature smoke test and retain success or failure output.
  6. Publish rollback, limitations, Unknown fields, and a correction route.

Read the full verification methodology →

Watch the plugin contract source we used for research

This video contributed concrete implementation vocabulary and a Host/Client MCP example. It remains a community source until its exact code is matched to current official types and compiled.

YouTube · community observed

Plugin structure and lifecycle walkthrough

Not verification
How to Develop a DeepSeek Harness Plugin?

01Coder · published 2026-08-15 · reviewed 2026-08-18

Publisher-caption tutorial covering Context, name, inject, Config, Schema, apply, ctx.effect, Host/Client entries, and an MCP bridge example.

Boundary: This is community implementation evidence. Exact APIs must be checked against current official types and compiled before a code pattern is labeled verified.

Open the cited segment on YouTube ↗

Why the Topic count is not an available-plugin count

The GitHub dsh-plugin topic currently returns the official repository, likely native plugins, broad integrations, browser tools, Skills, tutorials, and unrelated projects. Reactive Resume is a visible example in the current API result: its summary describes a resume builder, not a DSH plugin. HarnessBase keeps that rejected record to show the filter rather than silently inflating the total.

Provenance ledger

Evidence sources used on this page

  1. Official
    Official DeepSeek Harness repository ↗

    Canonical identity, quick start, Developer Preview status, source workflow, and plugin architecture.

    HB-OFF-DSH-20260818 · checked 2026-08-18
  2. Repository
    GitHub dsh-plugin topic ↗

    Discovery input only; topic membership is not compatibility evidence.

    HB-REPO-TOPIC-20260818 · checked 2026-08-18
  3. Direct test
    HarnessBase three-plugin load matrix

    Pinned package install, configuration dump, UI load, restart, and cleanup on isolated Windows profiles.

    HB-DT-PLUGINS-20260818 · checked 2026-08-18
  4. Direct test
    HarnessBase vision plugin reproduction

    Reproduced 0.1.4 loader failure and verified the 0.1.5 repair on two DSH process starts.

    HB-DT-VISION-20260818 · checked 2026-08-18
  5. Community
    r/DeepSeek plugin-loader report ↗

    Discovery lead with an exact error signature. Reporter environment and repair were not supplied; HarnessBase reproduced the versioned failure independently.

    HB-COM-REDDIT-VISION-20260818 · checked 2026-08-18
  6. Repository
    dsh-deepseek-vision package and repository ↗

    Published 0.1.4/0.1.5 artifacts and changelog used to explain the tested rc.7 compatibility change.

    HB-REG-VISION-20260818 · checked 2026-08-18
  7. Repository
    @sugarforever/dsh-lark repository ↗

    Credential, network, configuration, and package identity evidence for 0.2.2.

    HB-REG-LARK-20260818 · checked 2026-08-18
  8. Repository
    dsh-oomol repository ↗

    Published 0.1.4 client artifact was compared with the stable loader diagnostic.

    HB-REG-OOMOL-20260818 · checked 2026-08-18
  9. Community
    01Coder plugin-development tutorial ↗

    Publisher-caption implementation walkthrough; used as a research lead, not a compiled compatibility result.

    HB-YT-PLUGIN-20260818 · checked 2026-08-18