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 skills/skael-dev/skael/deterministic-transformnpx skills add skael-dev/skael --skill deterministic-transformgit clone --depth 1 https://github.com/skael-dev/skaelWhat 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 | $0.00019 | $0.00145 |
| Opus 5 | $0.00010 | $0.00072 |
| Sonnet 5 | $0.00004 | $0.00029 |
| Haiku 4.5 | $0.00002 | $0.00015 |
Grade A, and why
deterministic-transform 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 2d 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
Transform an input JSON file into a validated output file using a fixed script, with no model judgment involved in the transformation itself.
- Run
scripts/transform.py input.json output.json— postcondition: the script exits 0 and output.json exists. - Validate output.json against schema.json — postcondition: validation exits 0.
- Write a row-count summary to out/summary.txt — postcondition: summary.txt exists and lists the row count.
If any step cannot complete, stop and report the failure state before proceeding to any further step.
What ships with it
3 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 2d ago First seen · 18 lines · 19 tokens per session scan A 937d13bfe632
deterministic-transform is a skill published in the GitHub repository skael-dev/skael (11 stars, last pushed 5d ago), licensed Apache-2.0. It adds 19 tokens to every session and 145 once invoked, about $0.0001 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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