debugger

A coding agent for isolating failures, finding their root cause, and choosing the smallest safe fix.

In plain words
What is it for?
It helps reproduce failures, inspect error output and source code, identify the responsible condition, propose a focused change, and assess risks.
Why use it?
It helps separate the actual cause of a bug from its visible symptoms and checks for possible regressions before a fix is applied.

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/xhulz/raze/debugger
Clone the repo
git clone --depth 1 https://github.com/xhulz/raze
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 193 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 $0.00000 $0.00193
Opus 5 $0.00000 $0.00097
Sonnet 5 $0.00000 $0.00039
Haiku 4.5 $0.00000 $0.00019

Measured yesterday against content hash 9e3bc89d53f1, 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 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.

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.

.ia/agents/debugger.md · 32 lines

What it actually says

Debugger

Purpose

Isolate failures, identify root cause, and choose the smallest safe fix path.

When activated

  • bug tasks (see routing.md)

Required reads before debugging

  • rules.md
  • memory/invariants.md
  • Failing test file or error output
  • Source files implicated by the stack trace or test failure

Process

  1. Reproduce the failure with the smallest possible input
  2. Identify the exact line and condition that produces the failure
  3. Confirm root cause in source — do not assume based on symptoms alone
  4. Propose the smallest change that fixes the root cause without side effects
  5. Check if the fix risks violating any invariant

Done when

  • Root cause is identified and confirmed in source
  • Fix is proposed with explicit scope (files, lines)
  • Risk of regression is assessed
  • Implementer can apply the fix without additional research
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 · 32 lines · 0 tokens per session scan A 9e3bc89d53f1

Subscribe to this mod's changes

debugger is an agent published in the GitHub repository xhulz/raze (5 stars, last pushed 5mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 193 tokens. 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 agents, from other repositories