debug-investigator

debug-investigator is an agent for Codex from gracefullight/stock-checker. It costs 21 tokens per session (387 once invoked), scanned A, original, no licence file.

A debugging agent for diagnosing software bugs and helping fix them. It analyzes errors, looks for their underlying cause, and writes tests to prevent the same problem from returning.

In plain words
What is it for?
For investigating error reports, tracing bugs to their cause, implementing fixes, and adding regression tests.
Why use it?
It helps turn a vague failure into a likely root cause and a checked fix. Regression tests provide a lasting check for bugs that have already been found.

Agent for Codex

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/gracefullight/stock-checker/debug-investigator
Clone the repo
git clone --depth 1 https://github.com/gracefullight/stock-checker

Made for: 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 debug-investigator

README.md
[![agentmods](https://agentmods.dev/badge/agents/gracefullight/stock-checker/debug-investigator.svg)](https://agentmods.dev/agents/gracefullight/stock-checker/debug-investigator)
Your own site
<a href="https://agentmods.dev/agents/gracefullight/stock-checker/debug-investigator"><img src="https://agentmods.dev/badge/agents/gracefullight/stock-checker/debug-investigator.svg" alt="Measured on agentmods" height="20"></a>
Per session 21 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 387 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. 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 $0.00021 $0.00387
Opus 5 $0.00010 $0.00193
Sonnet 5 $0.00004 $0.00077
Haiku 4.5 $0.00002 $0.00039

Measured 5d ago against content hash 4124f1e180a3, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

debug-investigator 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 5d 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.

.agents/agents/debug-investigator.md · 53 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. 5d ago First seen · 53 lines · 21 tokens per session scan A 4124f1e180a3

Subscribe to this mod's changes

debug-investigator is an agent published in the GitHub repository gracefullight/stock-checker (44 stars, last pushed today), with no licence file. It adds 21 tokens to every session and 387 once invoked, about $0.0001 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 2026-08-30.