Borrowing it
Nothing to install: this file belongs to Amey-Thakur/CLAUDE-CERTIFICATIONS. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/Amey-Thakur/CLAUDE-CERTIFICATIONS/main/.claude/commands/cert/drill.mdgit clone --depth 1 https://github.com/Amey-Thakur/CLAUDE-CERTIFICATIONSWrote 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.
[](https://agentmods.dev/commands/amey-thakur/claude-certifications/drill)<a href="https://agentmods.dev/commands/amey-thakur/claude-certifications/drill"><img src="https://agentmods.dev/badge/commands/amey-thakur/claude-certifications/drill/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.
<a href="https://agentmods.dev/commands/amey-thakur/claude-certifications/drill"><img src="https://agentmods.dev/badge/commands/amey-thakur/claude-certifications/drill.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00000 | $0.00310 |
| Opus 5 | $0.00000 | $0.00155 |
| Sonnet 5 | $0.00000 | $0.00062 |
| Haiku 4.5 | $0.00000 | $0.00031 |
Grade A, and why
drill 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 8d 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.
What it actually says
Drill the domain named in $ARGUMENTS for the given certification. If either is missing, ask for it and stop until answered.
Prepare
- Read the certification's
README.mdand locate the domain, its weight, and its objectives. - Read the certification's
notes.mdfor the maintainer's summary of that domain. - Read
question-bank.jsonand filter to that exam and domain.
Run
Teach and test in alternation:
- Explain the domain's core judgment in three or four sentences, using the notes as the frame.
- Ask a question from the bank for that domain, options shuffled.
- After each answer, say whether it was right, then explain why every wrong option is wrong, in the style of the official rationales: name the constraint the correct option satisfies and the reason each distractor fails it.
- Escalate difficulty after two consecutive correct answers. After two misses on the same objective, re-teach that objective from a different angle with a concrete example before continuing.
When the bank's questions for the domain are exhausted, write new ones against the same objectives rather than repeating.
Close
Summarize which objectives within the domain are solid and which still need work, and recommend either another drill or /cert:mock if the domain now looks steady.
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.
- 8d ago First seen · 28 lines · 0 tokens per session scan A 9727a5b13fb3
drill is a command published in the GitHub repository Amey-Thakur/CLAUDE-CERTIFICATIONS (19 stars, last pushed 2d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 310 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 2026-08-30.
Other commands, from other repositories
explain
Explain the subject in depth using the fixed four-part structure: What, Why, Example, Consequences. Treat the subject as the thing to be explained, not as a literal question.
doc-explain
Command "doc-explain" from christopherlouet/claude-base, covering explain agent, code to explain, objective, workflow and expected output.
pull-repos
Pull all repos (parent + marketplace clones + configured project repos).
security-scan
Run security audit on codebase.
help
Explain Ralph Wiggum technique and available commands.
update-counts
Update all hardcoded counts (skills, agents, marketplace repos/skills) across documentation from filesystem.