agentmods.dev

cowork-session-fixer

A repair tool for Claude Cowork session errors on Windows and macOS. It finds leftover background processes from an earlier session and clears them when needed.

In plain words
What is it for?
Use it when Cowork shows “RPC error: process with name already running” or a session remains stuck because an older process was not cleaned up.
Why use it?
A stuck process can make Cowork report that a session is already running even when it is not usable. This addresses that specific startup or recovery problem.

Plugin for Claude Code

9 6d ago A scan tokens not measured original MIT
View the source file MSApps-Mobile/claude-plugins
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Claude Code
/plugin marketplace add MSApps-Mobile/claude-plugins
agentmods
npx agentmods add plugins/msapps-mobile/claude-plugins/cowork-session-fixer
Clone the repo
git clone --depth 1 https://github.com/MSApps-Mobile/claude-plugins

Made for: Claude Code.

Per session not measured What this adds to a session before it is invoked.
When invoked not measured Not applicable: nothing here is loaded into a session.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Security

Grade A, and why

cowork-session-fixer scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

plugins/cowork-session-fixer/.claude-plugin/plugin.json · 40 lines

What it actually says

{
  "name": "cowork-session-fixer",
  "version": "1.1.1",
  "description": "Fixes the 'RPC error: process with name already running' bug in Claude Cowork by detecting and clearing orphaned session processes. Works on Windows and macOS.",
  "author": {
    "name": "MSApps",
    "url": "https://msapps.mobi"
  },
  "homepage": "https://msapps.mobi/plugins",
  "repository": "https://github.com/MSApps-Mobile/claude-plugins",
  "keywords": [
    "cowork",
    "fix",
    "session",
    "RPC error",
    "orphaned process",
    "stuck session",
    "process already running",
    "sosa-agents"
  ],
  "sosa": {
    "compliant": true,
    "level": 1,
    "impact": "medium",
    "methodology": "https://github.com/MSApps-Mobile/claude-plugins/blob/main/docs/SOSA.md",
    "whitepaper": "https://github.com/MSApps-Mobile/claude-plugins/blob/main/docs/sosa-whitepaper.pdf",
    "pillars": {
      "supervised": "User confirmation required before archiving sessions or killing processes",
      "orchestrated": "Plan > Act > Verify pattern with structured output report",
      "secured": "Local filesystem only, no credentials, no external access",
      "agents": "R=session-recovery, T=local-files+bash, M=error-patterns, P=detect-diagnose-confirm-fix-verify"
    }
  },
  "topics": [
    "sosa-agents"
  ],
  "privacy_policy": "https://opsagents.agency/privacy",
  "terms_of_service": "https://opsagents.agency/terms"
}
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago First seen · 40 lines scan A dba3cf5711c7

Subscribe to this mod's changes

cowork-session-fixer is a plugin published in the GitHub repository MSApps-Mobile/claude-plugins (9 stars, last pushed 6d ago), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Debuggingagent-safetyai-agentsai-governanceclaudeclaude-codeclaude-plugins
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