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 Chemaclass/agnostic-ai --skill spec-authorgit clone --depth 1 https://github.com/Chemaclass/agnostic-aiWrote 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/chemaclass/agnostic-ai/spec-author)<a href="https://agentmods.dev/skills/chemaclass/agnostic-ai/spec-author"><img src="https://agentmods.dev/badge/skills/chemaclass/agnostic-ai/spec-author/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/chemaclass/agnostic-ai/spec-author"><img src="https://agentmods.dev/badge/skills/chemaclass/agnostic-ai/spec-author.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 | $0.00039 | $0.00255 |
| Opus 5 | $0.00019 | $0.00128 |
| Sonnet 5 | $0.00008 | $0.00051 |
| Haiku 4.5 | $0.00004 | $0.00026 |
Grade A, and why
spec-author 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 10d 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
spec-author
Authors a new agnostic-ai spec file from a description.
Steps
- Ask the user which kind: agent, skill, rule, or hook.
- Pick the right directory and extension:
- agent:
agents/<name>.md - skill:
skills/<name>/SKILL.md - rule:
rules/<name>.md - hook:
hooks/<name>.yaml
- agent:
- Build the YAML frontmatter (or full YAML for hooks) per
docs/user/spec-format.md. - Write the body in plain English. Lead with the action.
- Run
agnostic-ai validateto confirm parse. - Run
agnostic-ai sync --dry-runto preview emitted outputs.
Conventions
namefield matches the file name without extension.descriptionis one short sentence.- Body is markdown. Avoid em dashes. Avoid filler.
- Hooks include a
commandfield with the exact shell to run.
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.
- 10d ago First seen · 29 lines · 39 tokens per session scan A ccfb1e2e8fe9
spec-author is a skill published in the GitHub repository Chemaclass/agnostic-ai (12 stars, last pushed today), licensed MIT. It adds 39 tokens to every session and 255 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 2026-08-30.
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