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Gemini Executive Synthesis

Integration of `pm-skills` marketplace into Claude Desktop via the Cowork plugin UI.

Technical Positioning
Ensuring seamless installation and access to `pm-skills` plugins within the Claude Desktop environment, facilitating user adoption and expanding the utility of both platforms.
SaaS Insight & Market Implications
This issue reveals a critical user experience and integration failure: the inability to add the `pm-skills` marketplace to Claude Desktop via the Cowork plugin UI. The 'Failed to add marketplace' error, despite following documented steps and attempting both shorthand and full GitHub URLs, indicates a fundamental breakdown in the integration mechanism. Potential root causes include input format validation, network access issues, or GitHub API rate limiting. This directly impedes user adoption of `pm-skills` and undermines the value proposition of Claude Desktop as an extensible platform. Such integration friction creates significant barriers for B2B users attempting to leverage agentic skills, highlighting a need for robust, user-friendly marketplace integration.
Proprietary Technical Taxonomy
Claude Desktop Cowork plugin UI Add marketplace from GitHub phuryn/pm-skills URL field Sync GitHub API rate limiting input format

Raw Developer Origin & Technical Request

Source Icon GitHub Issue Mar 9, 2026
Repo: phuryn/pm-skills
Failed to add marketplace" error when adding GitHub marketplace via Cowork plugin UI

**Environment:**

Claude Desktop v1.1.5749 (ecf3d9)
Build date: 2026-03-08
Feature: Cowork → Plugins
MacOS

**Steps to Reproduce:**

1. Launch Claude Desktop
2. Navigate to the Cowork tab
3. Click "Customize with plugins"
4. Click Personal
5. Click +
6. Select "Add marketplace from GitHub"
7. Enter phuryn/pm-skills in the URL field
8. Click Sync

**Expected Result:**
Marketplace is added successfully and plugins from phuryn/pm-skills become available to install.
**Actual Result:**
A red error message is displayed: "Failed to add marketplace." No marketplace is added.
Screenshot: [attached]

**Notes:**

- The URL field accepts the owner/repo shorthand format (phuryn/pm-skills) as shown in the README for this marketplace, but it is unclear whether the app requires a full GitHub URL (e.g., github.com/phuryn/pm-skills instead
- Suggested investigation: validate whether the input format, network access, or GitHub API rate limiting is the root cause
- I also tried the full URL since the README says to use full URL.
- It appears the Claude Desktop UI has changed a bit since this README was written.

Developer Debate & Comments

No active discussions extracted for this entry yet.

Adjacent Repository Pain Points

Other highly discussed features and pain points extracted from phuryn/pm-skills.

Extracted Positioning
`pm-governance` plugin for decision governance within the `pm-skills` ecosystem.
Enhancing the `pm-skills` marketplace with a strategic 'decision governance layer' to prevent misdirected development, shifting from pure execution to intelligent pausing and decision-making.
Extracted Positioning
Collaboration between `pm-skills` (PM frameworks) and `PM AI Partner` (agent interaction modes).
Expanding the `pm-skills` ecosystem through complementary integration with `PM AI Partner` to offer a more comprehensive, multi-faceted AI-driven product management solution, combining structured frameworks with dynamic AI interaction modes.
Extracted Positioning
`socratic-questioning` skill for `pm-skills` marketplace.
Enhancing the `pm-skills` marketplace with a 'socratic-questioning' skill to address the critical failure mode of 'solving the wrong problem confidently' by slowing down and challenging assumptions during early product discovery.
Extracted Positioning
Missing "Personal" tab in Claude Desktop's plugin marketplace, preventing custom marketplace integration
Open, extensible agent skills marketplace for Claude Desktop

Engagement Signals

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Replies
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Issue Status

Cross-Market Term Frequency

Quantifies the cross-market adoption of foundational terms like MacOS and Claude Desktop by tracking occurrence frequency across active SaaS architectures and enterprise developer debates.