a0-debug-plugin

A troubleshooting guide for Agent Zero plugins that are missing, failing, or behaving incorrectly.

In plain words
What is it for?
It covers plugins that do not appear, will not enable, crash, have broken API endpoints or store screens, fail to inject extensions, or resolve settings incorrectly.
Why use it?
It helps narrow down whether the problem is loading, enabling, an API endpoint, the interface, settings, hooks, or runtime logs.

Skill for Claude CodeCodex

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 skills/agent0ai/agent-zero/a0-debug-plugin
Any agent
npx skills add agent0ai/agent-zero --skill a0-debug-plugin
Clone the repo
git clone --depth 1 https://github.com/agent0ai/agent-zero

Made for: Claude Code, Codex.

Per session 68 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,598 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 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 $0.00068 $0.01598
Opus 5 $0.00034 $0.00799
Sonnet 5 $0.00014 $0.00320
Haiku 4.5 $0.00007 $0.00160

Measured 2d ago against content hash 4b789ee1cc79, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade B, and why

a0-debug-plugin scanned grade B 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 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.

Recursive force deletemediumDestructive command

rm -rf with a variable or a broad path is one typo away from removing the wrong tree.

- The `uninstall()` hook is called by `uninstall_plugin()` in `helpers/plugins.py` before the plugin directory is deleted. If the user removed the plugin manually (`rm -rf`), the hook was bypassed — always use the API or

Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.

skills/a0-debug-plugin/SKILL.md · 188 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

Files

What ships with it

1 file 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. 2d ago First seen · 188 lines · 68 tokens per session scan B 4b789ee1cc79

Subscribe to this mod's changes

a0-debug-plugin is a skill published in the GitHub repository agent0ai/agent-zero (19,028 stars, last pushed 5d ago), with no licence file. It adds 68 tokens to every session and 1,598 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it B with 1 finding (recursive force delete). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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