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 skills add anthony-chaudhary/dos-kernel --skill antigravity-skillgit clone --depth 1 https://github.com/anthony-chaudhary/dos-kernelWrote 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/skills/anthony-chaudhary/dos-kernel/antigravity-skill)<a href="https://agentmods.dev/skills/anthony-chaudhary/dos-kernel/antigravity-skill"><img src="https://agentmods.dev/badge/skills/anthony-chaudhary/dos-kernel/antigravity-skill/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/skills/anthony-chaudhary/dos-kernel/antigravity-skill"><img src="https://agentmods.dev/badge/skills/anthony-chaudhary/dos-kernel/antigravity-skill.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00061 | $0.01504 |
| Opus 5.5 | $0.00024 | $0.00602 |
| Sonnet 5.5 | $0.00012 | $0.00301 |
| Haiku 4.5 | $0.00006 | $0.00150 |
Grade A, and why
dos-verify-done-claims 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 1mo 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.
How it starts
The opening of the file, as written. The whole thing — 145 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Verify done-claims against ground truth, not the agent's word
Overview
When an AI agent says "done", "shipped", or "fixed", that is a claim, not a
fact — and a claim the agent checks by re-reading its own work is consistency,
not grounding. This skill replaces that self-report with a verdict from a
witness the agent did not author: it shells the DOS kernel (dos verify,
dos commit-audit) to confirm the claimed effect from git ancestry and the
commit's actual diff. DOS is deterministic — no API key, no LLM, no network.
This skill adapts the DOS reference "witness-claim" pattern
(anthony-chaudhary/dos-kernel) into a host-agnostic screenplay.
When to Use This Skill
- Use when an agent reports a task/phase/feature as complete and you want that "done" confirmed from evidence before building on it.
- Use right after a commit, to confirm the commit's message matches its diff
(catch a
fix:that only touched a README, or a "tests pass" that deleted the assertions). - Use when folding many sub-agents' results — verify each claimed effect instead of trusting the return string.
- Do not use it to judge whether code is correct — that is what the test suite is for. This skill checks did-the-claimed-thing-actually-ship.
How It Works
Step 1: Install the kernel (once)
pip install dos-kernel # provides the `dos` CLI; deterministic, no key
Step 2: Audit the latest commit's claim vs its diff
A commit subject is forgeable (whoever wrote the message authored it); the files
it touched are not (git did). dos commit-audit grades the subject against the
actual diff:
dos commit-audit --workspace . HEAD
Read the verdict field: OK (the diff backs the claim's kind),
CLAIM_UNWITNESSED (the subject's claim is not evidenced by the diff — treat the
"done" as unproven), or ABSTAIN. This judges the kind of change, never
correctness — run the tests for that.
Step 3: Verify a named phase actually shipped
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.
- 1mo ago First seen · 145 lines · 61 tokens per session scan A 8268faddfd44
dos-verify-done-claims is a skill published in the GitHub repository anthony-chaudhary/dos-kernel (20 stars, last pushed 26d ago), licensed MIT. It adds 61 tokens to every session and 1,504 once invoked, about $0.0002 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.
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