Glean Claude plugin

Glean's plugin for Claude Code and Claude Cowork. This repo is a single-plugin marketplace.

Today it ships one plugin:

• glean — adds two tools, discover_skills and run_tool, that let the agent discover Glean-hosted skills for enterprise apps (Jira, Slack, Google Workspace, Salesforce, etc.) and invoke their downstream tools via Glean's MCP gateway.

Install

Claude Code (terminal)

/plugin marketplace add askscio/glean-plugins-internal
/plugin install glean@glean-plugins-internal

Claude Cowork (desktop)

1. Open the plugin picker.
2. Click Add marketplace, choose GitHub, and enter askscio/glean-plugins-internal.
3. Once the marketplace syncs, install the glean plugin from it.

First run

The first tool call triggers an OAuth sign-in to Glean. A browser window opens automatically with a sign-in URL. The tool call returns [AUTHENTICATION_REQUIRED] with the URL.

1. Tell the user authentication is needed and share the sign-in URL.
2. Wait for the user to complete sign-in in the browser.
3. Retry the original tool call — it will succeed once the browser callback completes.

After sign-in, the OAuth credentials are cached to ~/.glean/ and reused across sessions — you won't be prompted again until the refresh token expires.

Updates

# Claude Code
/plugin marketplace update glean-plugins-internal

# Cowork: the plugin picker has a "Sync" / "Check for updates"
# button on the marketplace entry.

Testing a specific branch or PR

You can point the marketplace at a specific git branch, tag, or commit:

# Install from a specific branch (e.g. a PR branch)
/plugin marketplace add askscio/glean-plugins-internal@branch-name
/plugin install glean@glean-plugins-internal

# Or update an existing marketplace to a different branch
/plugin marketplace remove glean-plugins-internal
/plugin marketplace add askscio/glean-plugins-internal@branch-name

You can also pin to a branch in settings.json:

{
  "marketplaces": [
    {
      "name": "glean-plugins-internal",
      "source": "https://github.com/askscio/glean-plugins-internal",
      "sourceType": "git",
      "branch": "mohit-baseline-marketplace-layout"
    }
  ]
}

For local development, point the marketplace at your local checkout instead:

/plugin marketplace add /path/to/glean-plugins-internal

Then just git checkout whichever branch you want to test.

Troubleshooting

• Sign-in loop — the cached OAuth provider state may be stale. Delete ~/.glean/mcp-credentials.json and retry.
• GLEAN_MCP_SERVER_URL is required — the plugin's .mcp.json wasn't picked up by the host. Reinstall; if that fails, open an issue.

Development

Prerequisites: Node 22+, npm.

npm install
npm test            # vitest
npm run typecheck   # tsc --noEmit
npm run build       # esbuild → plugins/glean/dist/index.js

Source is at the repo root (src/, tests/, scripts/). Packaged runtime lives under plugins/glean/. See the Layout section below.

Release process

1. Bump version in plugins/glean/.claude-plugin/plugin.json.
2. npm test && npm run typecheck — verify clean.
3. Commit, tag, and push:

   git tag v<version>
   git push && git push --tags

4. Draft a release on GitHub.

Layout

.claude-plugin/
  marketplace.json        Top-level marketplace manifest for Claude Code
                          / Cowork. Points at ./plugins/glean as the
                          plugin source.
plugins/glean/
  .claude-plugin/
    plugin.json           Plugin manifest — name, version, description
  .mcp.json               MCP server invocation read by Claude Code /
                          Cowork. Source of truth.
  dist/index.js           Built server bundle (every dep inlined; produced
                          by `npm run build`; checked in)
  skills/glean_run/       Skill that tells the agent how to use the
                          tools. Uses the open SKILL.md standard.
  start.sh                Bash launcher that anchors PROJECT_DIR to the
                          host's spawn cwd, then execs node on the bundle
  package.json            Minimal "type": "module" manifest so Node
                          treats dist/index.js as ESM at runtime
src/                      TypeScript sources for the MCP server
tests/                    Vitest suite
scripts/                  build.mjs — esbuild bundler
package.json              Top-level dev config — deps, npm scripts
tsconfig.json             TypeScript config for the dev tree

License

Apache 2.0. See LICENSE.