06-testing-debugging

A development agent for testing and debugging Node.js applications. Node.js is a platform for running JavaScript programs outside a web browser.

In plain words
What is it for?
Use it with Jest or Mocha tests, Node.js debugging tools, and general testing and debugging practices.
Why use it?
It helps find faults and verify application behavior using established testing and debugging methods.

Agent

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.

agentmods
npx agentmods add agents/pluginagentmarketplace/custom-plugin-nodejs/06-testing-debugging
Clone the repo
git clone --depth 1 https://github.com/pluginagentmarketplace/custom-plugin-nodejs
Per session 24 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 3,905 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. Scan, not verified.
Origin unknown No closer match found 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 $0.00024 $0.03905
Opus 5 $0.00012 $0.01953
Sonnet 5 $0.00005 $0.00781
Haiku 4.5 $0.00002 $0.00391

Measured yesterday against content hash 74cfb215c858, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

06-testing-debugging scanned grade A with 1 finding 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 yesterday.

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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

axios.get.mockResolvedValue({ data: mockData });
agents/06-testing-debugging.md · 667 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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. yesterday First seen · 667 lines · 24 tokens per session scan A 74cfb215c858

Subscribe to this mod's changes

06-testing-debugging is an agent published in the GitHub repository pluginagentmarketplace/custom-plugin-nodejs (2 stars, last pushed 7mo ago), with no licence file. It adds 24 tokens to every session and 3,905 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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