PulseAugur
EN
LIVE 09:31:50

Claude Code Users Report MCP ToolUniverse Connection Error

By PulseAugur Editorial · [1 sources] ·

Users are encountering an error message, "MCP ToolUniverse: Couldn’t start for Cowork and Code sessions. Error: connection closed," when using Claude Code. This issue has persisted for about a week and directs users to developer settings without a clear solution. The problem has been reported on Windows 11. AI

IMPACT This issue may hinder user productivity and confidence in Claude Code's functionality.

RANK_REASON User-reported issue with a specific product feature.

Read on r/ClaudeAI →

AI-generated summary · Google Gemini · from 1 sources. How we write summaries →

Claude Code Users Report MCP ToolUniverse Connection Error

How we ranked this

Signal score
7 / 100
Composite score across the factors below. Higher = stronger signal that this story matters right now.
Newsworthiness bucket
Tool
User-reported issue with a specific product feature.
Source corroboration
Single-source cluster
Only one publisher covered this so far. Single-source stories can still rank when the publisher is high-authority, but they lack cross-source corroboration.
Topics
product, other
Editorial topic classification. Feeds into how the story surfaces on /topic/<slug> hub pages and into the per-entity coverage mix.
AI-industry relevance
High
Clearly on-topic for AI-industry coverage.
Story freshness
Breaking (< 6h)
Fresh story with cross-source coverage still developing. Ranking may shift as more sources report.

Full methodology in our editorial standards.

COVERAGE [1]

  1. r/ClaudeAI TIER_2 English(EN) · /u/iamthe0ther0ne ·

    MCP ToolUniverse error?

    <!-- SC_OFF --><div class="md"><p>I've been getting the following error in Claude Code all week:</p> <p>&quot;MCP ToolUniverse: Couldn’t start for Cowork and Code sessions. Error: connection closed&quot; </p> <p>It sends me to developer settings, but I don't see a way to fix it. …

RELATED ENTITIES

RELATED TOPICS