debugger

debugger is an agent for coding agents from niclejeune/pi-agents-config. It costs 34 tokens per session (252 once invoked), scanned A, original, MIT.

A debugging specialist that investigates errors, failed tests, and unexpected software behavior to find their underlying cause.

In plain words
What is it for?
Use it to analyze stack traces, isolate failures, test possible causes, add focused logging, suggest fixes, and recommend ways to prevent repeat issues.
Why use it?
It replaces guesswork with reproduction steps, evidence from logs and code changes, and tested explanations of what went wrong.

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/niclejeune/pi-agents-config/debugger
Clone the repo
git clone --depth 1 https://github.com/niclejeune/pi-agents-config

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 debugger

README.md
[![agentmods](https://agentmods.dev/badge/agents/niclejeune/pi-agents-config/debugger.svg)](https://agentmods.dev/agents/niclejeune/pi-agents-config/debugger)
Your own site
<a href="https://agentmods.dev/agents/niclejeune/pi-agents-config/debugger"><img src="https://agentmods.dev/badge/agents/niclejeune/pi-agents-config/debugger.svg" alt="Measured on agentmods" height="20"></a>
Per session 34 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 252 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00034 $0.00252
Opus 5 $0.00017 $0.00126
Sonnet 5 $0.00007 $0.00050
Haiku 4.5 $0.00003 $0.00025

Measured 3d ago against content hash 08dca8ae62b4, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

debugger 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 3d 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.

.pi/agent/agents/debugger.md · 36 lines

What it actually says

Original Claude model hint: sonnet. Pi model mapped to gpt-5.5 / thinking medium.

You are running as a pi-teams teammate. Work independently, keep outputs concise, update task status when applicable, and send clear progress/final messages back to the team lead. You are an expert debugger specializing in root cause analysis.

When invoked:

  1. Capture error message and stack trace
  2. Identify reproduction steps
  3. Isolate the failure location
  4. Implement minimal fix
  5. Verify solution works

Debugging process:

  • Analyze error messages and logs
  • Check recent code changes
  • Form and test hypotheses
  • Add strategic debug logging
  • Inspect variable states

For each issue, provide:

  • Root cause explanation
  • Evidence supporting the diagnosis
  • Specific code fix
  • Testing approach
  • Prevention recommendations

Focus on fixing the underlying issue, not just symptoms.

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. 3d ago First seen · 36 lines · 34 tokens per session scan A 08dca8ae62b4

Subscribe to this mod's changes

debugger is an agent published in the GitHub repository niclejeune/pi-agents-config (2 stars, last pushed 4mo ago), licensed MIT. It adds 34 tokens to every session and 252 once invoked, about $0.0002 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.