phoenix-debug

phoenix-debug is a skill for Claude Code, Codex from All-The-Vibes/ATV-Phoenix. It costs 80 tokens per session (1,158 once invoked), scanned A, original, MIT.

A step-by-step method for investigating broken software: reproduce the failure, narrow down its cause, fix the underlying problem, and check that it is resolved. A code graph shows relationships such as which parts call or depend on other parts.

In plain words
What is it for?
Use it for failed tests or builds, regressions, and errors whose cause is not immediately clear.
Why use it?
It replaces guesswork with evidence and helps avoid fixes that only hide the visible symptom. The original failing check must pass before the problem is considered healed.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it for failed tests or builds, regressions, and errors whose cause is not immediately clear.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/all-the-vibes/atv-phoenix/phoenix-debug
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 All-The-Vibes/ATV-Phoenix --skill phoenix-debug
Clone the repo
git clone --depth 1 https://github.com/All-The-Vibes/ATV-Phoenix

Made for: Claude Code, Codex.

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 phoenix-debug

README.md
[![agentmods](https://agentmods.dev/badge/skills/all-the-vibes/atv-phoenix/phoenix-debug.svg)](https://agentmods.dev/skills/all-the-vibes/atv-phoenix/phoenix-debug)
Your own site
<a href="https://agentmods.dev/skills/all-the-vibes/atv-phoenix/phoenix-debug"><img src="https://agentmods.dev/badge/skills/all-the-vibes/atv-phoenix/phoenix-debug.svg" alt="Measured on agentmods" height="20"></a>
Per session 80 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,158 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 original 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 5.1 $0.00080 $0.01158
Opus 5 $0.00040 $0.00579
Sonnet 5 $0.00016 $0.00232
Haiku 4.5 $0.00008 $0.00116

Measured 8d ago against content hash 09ad8937b7fa, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

phoenix-debug 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.

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.

skills/phoenix-debug/SKILL.md · 89 lines

How it starts

The opening of the file, as written. The whole thing — 89 lines — stays where its author put it; the contents beside it link to each section on GitHub.

phoenix-debug — reproduce, isolate, fix the root, prove it healed

Overview

When something breaks, the failure mode is guessing. Phoenix debugging is evidence-driven: first capture the failure as a runnable phoenix_sense check (so you can prove when it's fixed), then isolate the cause using the code graph instead of reading the whole repo, fix the root not the symptom, and confirm green. Recovery is real only when the check that was red is green — and you watched it happen.

When to use

  • A phoenix_sense check went red and you don't immediately know why.
  • A regression: something that passed now fails.
  • An error/stack trace you need to chase down.

When NOT to use: you already know the exact one-line fix and have a check — just phoenix-build it.

The triage flow

  Break observed
       │
       ▼
  1. REPRODUCE  → capture as a phoenix_sense check that is RED now
       │
       ▼
  2. ISOLATE    → graph: who calls / what changed near the failure (NOT grep the repo)
       │
       ▼
  3. HYPOTHESIZE→ smallest plausible root cause
       │
       ▼
  4. FIX root   → snapshot, edit, phoenix_sense
       │   ├── green ─► verify no regressions (full suite) ─► done
       │   └── red ──► phoenix_heal rollback ─► new hypothesis (≤3 cycles)
       ▼
  5. If 3 cycles fail → STOP, report findings + what you ruled out

1. Reproduce as a check (don't fix blind)

Turn the break into the narrowest red phoenix_sense you can. If it's an intermittent failure, try phoenix_heal retry first to learn whether it's transient or real. You cannot prove a fix without a reproducer.

2. Isolate with the graph, not grep

Ask phoenix-context: "who calls the failing function?", "what changed in its blast radius?", "what does it depend on?". This finds the cause in a bounded query instead of re-reading files turn after turn (which burns the context budget exactly when you need it most).

3. Fix the root, not the symptom

Patching the symptom (swallowing the exception, special-casing the one failing input) leaves the real bug live. Trace to the actual cause. If you can only treat the symptom, say so explicitly and open a follow-up — don't pretend the root is fixed.

Read the full file on GitHub · 89 lines

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 · 89 lines · 80 tokens per session scan A 09ad8937b7fa

Subscribe to this mod's changes

phoenix-debug is a skill published in the GitHub repository All-The-Vibes/ATV-Phoenix (5 stars, last pushed 4d ago), licensed MIT. It adds 80 tokens to every session and 1,158 once invoked, about $0.0004 per session on Opus 5. 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.

Related

Other skills, from other repositories

semgrep-rule-creator

Creates custom Semgrep rules for detecting security vulnerabilities, bug patterns, and code patterns. Use when writing Semgrep rules or building custom static analysis detections.

waybarrios/opencode-power-pack · 37 tokens

variant-analysis

Find similar vulnerabilities and bugs across codebases using pattern-based analysis. Use when hunting bug variants, building CodeQL/Semgrep queries, analyzing security vulnerabilities, or performing systematic code audits after finding an initial issue.

waybarrios/opencode-power-pack · 45 tokens

fp-check

Systematically verifies suspected security bugs to eliminate false positives. Produces TRUE POSITIVE or FALSE POSITIVE verdicts with documented evidence for each bug.

waybarrios/opencode-power-pack · 32 tokens

vuln-report

Turn one confirmed security finding into a disclosure-ready GitHub advisory with root cause, proof of concept, impact, and source evidence. Use for reporting an established vulnerability, not discovering or validating one.

waybarrios/opencode-power-pack · 44 tokens

huggingface-spaces

Build, deploy, debug, or maintain a Hugging Face Space using Gradio, Docker, or Static SDKs. Use for general Space hosting and configuration; use huggingface-zerogpu for ZeroGPU runtime constraints and lora-space-builder for LoRA demos.

waybarrios/opencode-power-pack · 60 tokens

azure-diagnostics

WORKFLOW SKILL — Debug and troubleshoot Azure production issues: Container Apps + Function Apps diagnostics, KQL log analysis, health checks. WHEN: 'debug production issues', 'troubleshoot container apps', 'troubleshoot function apps', 'image pull failures', 'cold start issues', 'health probe failures'. DO NOT USE…

jonathan-vella/apex-accelerator · 91 tokens