What is debug-that CLAUDE.md?

Project instructions for debug-that, a command-line debugger that lets AI agents inspect and control running Node.js, Bun, and native programs.

Understanding, changing, testing, and troubleshooting the debug-that codebase.

They give an agent the project layout, technology choices, commands, and validation rules needed to work on the debugger without first piecing together its structure.

How theodo-group/debug-that configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to theodo-group/debug-that. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/theodo-group/debug-that/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/theodo-group/debug-that

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.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/theodo-group/debug-that/claude-md/github.svg)](https://agentmods.dev/instructions/theodo-group/debug-that/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/theodo-group/debug-that/claude-md"><img src="https://agentmods.dev/badge/instructions/theodo-group/debug-that/claude-md/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.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/theodo-group/debug-that/claude-md"><img src="https://agentmods.dev/badge/instructions/theodo-group/debug-that/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 860 This file is loaded in full into every session.

When invoked 860 The same file — it is already loaded in full.

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.

Model	Per session	Once invoked
Fable 5.1	$0.00860	$0.00860
Opus 5.5	$0.00344	$0.00344
Sonnet 5.5	$0.00172	$0.00172
Haiku 4.5	$0.00086	$0.00086

Measured 29d ago against content hash 2b985f75a658, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

debug-that CLAUDE.md 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 29d 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.

CLAUDE.md · 68 lines

How it starts

The opening of the file, as written. The whole thing — 68 lines — stays where its author put it; the contents beside it link to each section on GitHub.

debug-that — Debugger CLI for AI Agents

Project Overview

CLI debugger built with Bun, optimized for AI agent consumption. Supports Node.js (CDP), Bun (JSC/WebKit), and native code via LLDB (DAP).

Tech Stack

Runtime: Bun
Language: TypeScript
Linting/Formatting: Biome
Testing: bun:test
Validation: Zod v4 (mini)
Dependencies: Minimal — leverage Bun built-ins (WebSocket, test runner, file I/O)

Project Structure

src/
  cli/          # CLI argument parsing, command routing, flag utilities
  session/      # Shared session abstractions
    session.ts    # Session interface + SessionCapabilities
    base-session.ts # BaseSession abstract class (shared state, refs, console)
    types.ts      # Shared types (PauseInfo, StateSnapshot, ConsoleMessage, etc.)
    factory.ts    # createSession() + isDapRuntime()
  daemon/       # Background daemon process, Unix socket server
  cdp/          # Chrome DevTools Protocol (Node.js / Bun)
    session.ts    # CdpSession (extends BaseSession)
    session-*.ts  # CDP method modules (breakpoints, execution, inspection, etc.)
    dialect.ts    # InspectorDialect interface (what differs between V8 and JSC)
    dialects/     # NodeDialect, BunDialect + openInspector() (socket + runtime probing)
    client.ts     # CdpClient WebSocket wrapper
  dap/          # Debug Adapter Protocol (LLDB, Python, etc.)
    session.ts    # DapSession (extends BaseSession)
    client.ts     # DapClient stdin/stdout wrapper
  refs/         # @ref system (mapping short refs to V8 IDs)
  formatter/    # Output formatting (variables, source, stack traces)
  commands/     # Command implementations (break, step, eval, etc.)
  protocol/     # CLI-to-daemon JSON protocol types
  sourcemap/    # Source map resolution
  util/         # Shared utilities (escapeRegex, etc.)
  constants.ts  # Centralized timeout/limit constants
tests/
  unit/         # Unit tests
  integration/  # Integration tests (node/, bun/, lldb/, shared/)
  fixtures/     # Test fixture scripts

Read the full file on GitHub · 68 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.

29d ago Changed · +1 lines · +54 tokens per session 2b985f75a658
2mo ago First seen · 67 lines · 806 tokens per session scan A 1fbc6f378c66

Subscribe to this mod's changes

debug-that CLAUDE.md is an instructions file published in the GitHub repository theodo-group/debug-that (159 stars, last pushed 28d ago), licensed MIT. It adds 860 tokens to every session, about $0.0034 per session on Opus 5.5. 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.

Debugging agent bun claude cli debugger lldb

debug-that CLAUDE.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
debug-that CLAUDE.mdtheodo-group/debug-that	Instructions file	159	28d ago	MIT	A	860	Claude Code
vscode buildNext.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	9,719	GitHub Copilot
next.js AGENTS.mdvercel/next.js	Instructions file	143k	today	MIT	A	7,461	Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchain	Instructions file	149k	yesterday	MIT	A	4,680	Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	5,516	GitHub Copilot
vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	3,093	GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness	Instructions file	274k	2d ago	MIT	A	4,313	Codex, OpenCode

debug-that: Instructions file for Claude Code