debugger

debugger is an agent for Claude Code from bastani-inc/atomic. It costs 33 tokens per session (939 once invoked), scanned A, original, no licence file.

A coding assistant for finding the causes of errors, failed tests, and unexpected program behavior.

In plain words
What is it for?
Use it to investigate system problems, analyze stack traces, debug failures, and fix faulty code.
Why use it?
It helps turn error messages and stack traces into a clearer investigation of what went wrong.

Agent for Claude Code

Written for Claude Code: a Claude Code subagent (agents/*.md). Also seen: model in frontmatter.

Good fit Use it to investigate system problems, analyze stack traces, debug failures, and fix faulty code.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/bastani-inc/atomic/debugger
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.

Clone the repo
git clone --depth 1 https://github.com/bastani-inc/atomic

Made for: Claude Code.

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/bastani-inc/atomic/debugger/github.svg)](https://agentmods.dev/agents/bastani-inc/atomic/debugger)
Your own site
<a href="https://agentmods.dev/agents/bastani-inc/atomic/debugger"><img src="https://agentmods.dev/badge/agents/bastani-inc/atomic/debugger/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for debugger

Your own site · 80×15
<a href="https://agentmods.dev/agents/bastani-inc/atomic/debugger"><img src="https://agentmods.dev/badge/agents/bastani-inc/atomic/debugger.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 33 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 939 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.00033 $0.00939
Opus 5.5 $0.00013 $0.00376
Sonnet 5.5 $0.00007 $0.00188
Haiku 4.5 $0.00003 $0.00094

Measured 27d ago against content hash d7b8adf032f3, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

debugger 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 27d 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.

Makes network callslowCapability

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

For external documentation, errors, or library issues, use `fetch_content <url>` first; then `/llms.txt`; then `bash` with `curl <url> -H Accept: text/markdown`; then the `agent-browser` skill only for JavaScript, login,
packages/subagents/agents/debugger.md · 56 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

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. 27d ago Changed · +1 lines d7b8adf032f3
  2. 1mo ago Changed 95fab2d4a284
  3. 1mo ago Changed 0ddc9998d14d
  4. 1mo ago Changed 884491af82ef
  5. 1mo ago First seen · 55 lines · 33 tokens per session scan A 2b4e08d16b08

Subscribe to this mod's changes

debugger is an agent published in the GitHub repository bastani-inc/atomic (861 stars, last pushed today), with no licence file. It adds 33 tokens to every session and 939 once invoked, about $0.0001 per session on Opus 5.5. 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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