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 commands/xonovex/platform/skill-optimizegit clone --depth 1 https://github.com/xonovex/platformWhat 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 | $0.00025 | $0.00331 |
| Opus 5 | $0.00013 | $0.00166 |
| Sonnet 5 | $0.00005 | $0.00066 |
| Haiku 4.5 | $0.00003 | $0.00033 |
Grade A, and why
skill-optimize 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
/xonovex-utility:skill-optimize - Trim a skill to its knowledge delta and verify
Arguments
[skill-file](required unless--all) - Path to a SKILL.md or skill directory--all(optional) - Optimize every skill in the catalog, one optimize per skill in parallel[--model <m>](optional) - Weakest model to measure and ablate against (defaulthaiku)[--tier <t>](optional) - Trim depth;autoclassifies per skill (defaultauto)[--dry-run](optional) - Preview cuts without writing[--report-only](optional) - Ablate and report regressions without restoring
Delegation
Load the skill-guide skill (plugin xonovex-skill-skill) and perform its
optimize operation with these arguments. The skill is the source of truth for the
procedure, tiers, and gotchas. Do not restate them.
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 · 34 lines · 25 tokens per session scan A 162de77e0f29
skill-optimize is a command published in the GitHub repository xonovex/platform (5 stars, last pushed 2d ago), licensed MIT. It adds 25 tokens to every session and 331 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 2026-08-31.
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