tracy-debugging

A debugging guide for PHP applications using Tracy, including its error screen, toolbar, and data dumps. It also explains how Tracy can show this information in the browser's JavaScript console.

In plain words
What is it for?
Fetching local PHP pages, investigating PHP errors, and interpreting Tracy BlueScreen, Tracy Bar, and dump output.
Why use it?
It helps developers inspect local PHP errors and debugging output without guessing what the displayed Tracy information means.

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/nette/claude-code/tracy-debugging
Any agent
npx skills add nette/claude-code --skill tracy-debugging
Clone the repo
git clone --depth 1 https://github.com/nette/claude-code

Made for: Claude Code, Codex.

Per session 116 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,019 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 $0.00116 $0.02019
Opus 5 $0.00058 $0.01009
Sonnet 5 $0.00023 $0.00404
Haiku 4.5 $0.00012 $0.00202

Measured yesterday against content hash f5690b18441e, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

tracy-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.

dump). Read BEFORE running curl or Chrome to any local development PHP URL – with Tracy >= 2.12 and a detected agent,
plugins/nette/skills/tracy-debugging/SKILL.md · 169 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 · 169 lines · 116 tokens per session scan A f5690b18441e

Subscribe to this mod's changes

tracy-debugging is a skill published in the GitHub repository nette/claude-code (44 stars, last pushed 20d ago), with no licence file. It adds 116 tokens to every session and 2,019 once invoked, about $0.0006 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 2026-08-30.

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