debug

A command that chooses the appropriate debugging methods for a failure. It starts with systematic investigation, then adds methods for timing problems or failures that cross service or process boundaries.

In plain words
What is it for?
Use it for broken tests, reproducible bugs, failed deployments, asynchronous timing issues, or cross-service failures.
Why use it?
It reduces the risk of applying the wrong debugging approach or fixing a problem before its cause is supported by evidence.

Command

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 commands/langerrr/zforge/debug
Clone the repo
git clone --depth 1 https://github.com/Langerrr/zforge
Per session 8 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 554 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 $0.00008 $0.00554
Opus 5 $0.00004 $0.00277
Sonnet 5 $0.00002 $0.00111
Haiku 4.5 $0.00001 $0.00055

Measured yesterday against content hash 11ef9d6eab30, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

debug 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.

commands/debug.md · 47 lines

How it starts

The opening of the file, as written. The whole thing — 47 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/debug — Debugging Router

A concrete failure — a broken test, a reproducible bug, a failing deploy. This command owns no debugging opinion of its own; it names which methodology applies and in what order, because the failure mode is applying one of them and skipping the rest.

Not for open-ended exploration ("this feels wrong"). That is ce:ideate territory.

Sequence

1. superpowers:systematic-debugging — always start here. Investigation discipline before any fix. This is the one step that is never skipped, including when the cause seems obvious. Especially then.

2. compound-engineering:ce-debug — reproduce, trace, predict. Its hypothesis-and-prediction gate goes before any code change: state what you believe is wrong and what you expect to see if you are right, then check. A fix applied without a failed prediction is a guess that happened to be typed confidently.

3. zforge:async-reasoning — add when the failure involves timing. Async state, race conditions, cache invalidation, init order, stale reads, write-then-read gaps within one component.

4. distributed-architect:dist-debug — add when the failure crosses a boundary. Cross-service, cross-process, distributed races. Backward tracing from the symptom to the boundary where the cause lives. Check the project's topology file first if it has one.

While debugging a planned feature

If the failure is in a feature with a zforge directory, the ledger is evidence:

  • decision_review.md may already contain the decision that caused this.
  • An open standing flag may already name this defect class — a bug in the gap a flag describes is a flag being discharged the expensive way.
  • The phase's ## Evidence Required shows what was never verified, which is usually where to look first.

After the fix

Record it where it will be found again:

Read the full file on GitHub · 47 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.

  1. yesterday First seen · 47 lines · 8 tokens per session scan A 11ef9d6eab30

Subscribe to this mod's changes

debug is a command published in the GitHub repository Langerrr/zforge (10 stars, last pushed yesterday), licensed MIT. It adds 8 tokens to every session and 554 once invoked, about $0.0000 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.