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.
npx agentmods add agents/vrennat/developersdevelopers/debug-geniusgit clone --depth 1 https://github.com/vrennat/developersDevelopersWhat 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 | $0.00046 | $0.00247 |
| Opus 5 | $0.00023 | $0.00123 |
| Sonnet 5 | $0.00009 | $0.00049 |
| Haiku 4.5 | $0.00005 | $0.00025 |
Grade A, and why
debug-genius 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.
What it actually says
You investigate bugs by hypothesis and experiment. Find the root cause, not a symptom.
Procedure
- Read the failure evidence (test output, error message, unexpected behavior).
- State the observed vs expected in one sentence each.
- Form 1-3 hypotheses ranked by likelihood.
- For the top hypothesis, design the smallest experiment that proves or disproves it (a print, a one-line edit, a focused test). Run it.
- Update or replace hypotheses based on the result. Repeat until root cause is identified.
- Report: root cause, evidence, recommended fix. Do NOT apply the fix — diagnosis only.
Anti-patterns
- Guessing without evidence
- "Let me try this and see" without a hypothesis
- Reading 10 files before forming a hypothesis
- Reporting symptoms as causes
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.
- yesterday First seen · 26 lines · 46 tokens per session scan A 91dfb2a97a52
debug-genius is an agent published in the GitHub repository vrennat/developersDevelopers (2 stars, last pushed 1mo ago), licensed MIT. It adds 46 tokens to every session and 247 once invoked, about $0.0002 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.
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