DeepSeek Harness Plugin Checker - GitHub Action

A GitHub Action that checks the correctness of a DeepSeek Harness (dsh) plugin.

It checks the plugin in the following order, cheapest first:

1. Check the manifest — package.json exists, is valid JSON, declares a name, declares dsh.bundle.patch, and the referenced patch file exists. A package without dsh.bundle is not a dsh plugin.
2. Install with dsh — runs dsh plugin --profile web add; fails if dsh cannot install it (e.g. failed pnpm install).
3. Verify the layer applies — runs dsh --profile web --dump-config and fails if the plugin does not appear as a bundle layer (# == <name>) in the composed config.

Usage

Add the action to your plugin repository's workflow:

name: ci

on:
  push:
    branches: [main]
  pull_request:

jobs:
  check-plugin:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v7
      - name: Check the DSH plugin
        uses: bowenliang123/dsh-plugin-checker@v1

This checks the repository root. To check a plugin that lives in a subdirectory, pass rootPath:

      - name: Check the DSH plugin
        uses: bowenliang123/dsh-plugin-checker@v1
        with:
          rootPath: plugins/my-plugin

Inputs

Input	Description	Required	Default
rootPath	Path to the plugin root directory, relative to the repository root.	No	.
profile	dsh profile to install the plugin into.	No	web
dshVersion	Version of the @deepseek-ai/dsh npm package to install. Use latest for newest.	No	latest
pnpmVersion	Version of pnpm to install (dsh plugin management runs pnpm internally).	No	latest
nodeVersion	Node.js version to run the dsh CLI with.	No	24

How it works

1. Sets up Node.js and installs pnpm and the @deepseek-ai/dsh CLI (npm install @deepseek-ai/dsh) from npm.
2. Checks the plugin's package.json manifest statically (valid JSON, name, dsh.bundle.patch declared, patch file exists).
3. Runs dsh plugin --profile <profile> add <rootPath> to install the plugin into a fresh dsh profile under the runner home.
4. Runs dsh --profile <profile> --dump-config and verifies the plugin shows up as a bundle layer (# == <name>), confirming the patch actually loads.

A plugin package.json looks like:

{
  "name": "my-dsh-plugin",
  "version": "0.1.0",
  "type": "module",
  "main": "index.js",
  "dsh": {
    "bundle": {
      "patch": "./cordis.patch.yml"
    }
  }
}

Examples

• examples/hello-plugin — a minimal valid plugin that passes the check.
• examples/broken-plugin — a plugin with an invalid package.json that must fail the check.

License

Apache License 2.0