memory-leak-debugging

memory-leak-debugging is a skill for Claude Code from zhang77-X/chrpme_MCP. It costs 50 tokens per session (641 once invoked), scanned A, a copy of memory-leak-debugging, Apache-2.0.

A guide for finding and fixing memory leaks in JavaScript and Node.js applications. A memory leak is a problem where a program keeps memory it no longer needs, which can cause high usage or crashes.

In plain words
What is it for?
Use it to investigate out-of-memory errors, growing memory use, detached page elements, retained event listeners, closures, global variables, or unbounded caches.
Why use it?
It provides a structured way to determine whether the leak is in the browser or server and inspect evidence such as heap snapshots.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the chrome-devtools-mcp plugin — 6 skills, 1 MCP server shipped together

Good fit Use it to investigate out-of-memory errors, growing memory use, detached page elements, retained event listeners, closures, global variables, or unbounded caches.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/zhang77-x/chrpme_mcp/memory-leak-debugging
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.

Any agent
npx skills add zhang77-X/chrpme_MCP --skill memory-leak-debugging
Clone the repo
git clone --depth 1 https://github.com/zhang77-X/chrpme_MCP

Made for: Claude Code.

Or install chrome-devtools-mcp, the plugin that ships this one along with the rest of its 6 skills, 1 MCP server.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for memory-leak-debugging

README.md
[![agentmods](https://agentmods.dev/badge/skills/zhang77-x/chrpme_mcp/memory-leak-debugging/github.svg)](https://agentmods.dev/skills/zhang77-x/chrpme_mcp/memory-leak-debugging)
Your own site
<a href="https://agentmods.dev/skills/zhang77-x/chrpme_mcp/memory-leak-debugging"><img src="https://agentmods.dev/badge/skills/zhang77-x/chrpme_mcp/memory-leak-debugging/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for memory-leak-debugging

Your own site · 80×15
<a href="https://agentmods.dev/skills/zhang77-x/chrpme_mcp/memory-leak-debugging"><img src="https://agentmods.dev/badge/skills/zhang77-x/chrpme_mcp/memory-leak-debugging.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 50 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 641 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 100% copy Near-identical to another mod in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00050 $0.00641
Opus 5 $0.00025 $0.00320
Sonnet 5 $0.00010 $0.00128
Haiku 4.5 $0.00005 $0.00064

Measured 8d ago against content hash 483d4fe3ba2f, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

memory-leak-debugging 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 8d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (references/compare_snapshots.js), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

Origin

This is a copy

100% identical to memory-leak-debugging — 0 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

skills/memory-leak-debugging/SKILL.md · 51 lines

How it starts

The opening of the file, as written. The whole thing — 51 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Memory Leak Debugging

This skill provides expert guidance and workflows for finding, diagnosing, and fixing memory leaks in JavaScript and Node.js applications.

Core Principles

  • Prefer memlab: Do NOT attempt to read raw .heapsnapshot files directly, as they are extremely large and will consume too many tokens. Always recommend and use memlab to process snapshots and identify leak traces.
  • Isolate the Leak: Determine if the leak is in the browser (client-side) or Node.js (server-side).
  • Common Culprits: Look for detached DOM nodes, unhandled closures, global variables, event listeners not being removed, and caches growing unbounded. Note: Detached DOM nodes are sometimes intentional caches; always ask the user before nulling them.

Workflows

1. Capturing Snapshots

When investigating a frontend web application memory leak, utilize the chrome-devtools-mcp tools to interact with the application and take snapshots.

  • Use tools like click, navigate_page, fill, etc., to manipulate the page into the desired state.
  • Revert the page back to the original state after interactions to see if memory is released.
  • Repeat the same user interactions 10 times to amplify the leak.
  • Use take_memory_snapshot to save .heapsnapshot files to disk at baseline, target (after actions), and final (after reverting actions) states.

2. Using Memlab to Find Leaks (Recommended)

Once you have generated .heapsnapshot files using take_memory_snapshot, use memlab to automatically find memory leaks.

  • Read references/memlab.md for how to use memlab to analyze the generated heapsnapshots.
  • Do not read raw .heapsnapshot files using read_file or cat.

3. Identifying Common Leaks

When you have found a leak trace (e.g., via memlab output), you must identify the root cause in the code.

Read the full file on GitHub · 51 lines

Files

What ships with it

3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 8d ago First seen · 51 lines · 50 tokens per session scan A 483d4fe3ba2f

Subscribe to this mod's changes

memory-leak-debugging is a skill published in the GitHub repository zhang77-X/chrpme_MCP (0 stars, last pushed 3mo ago), licensed Apache-2.0. It adds 50 tokens to every session and 641 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. It is 100% identical to memory-leak-debugging, differing in 0 lines, and is treated as a copy.

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