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 coolTheWorld/evolution-skills --skill cross-domaingit clone --depth 1 https://github.com/coolTheWorld/evolution-skillsWrote 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/cooltheworld/evolution-skills/cross-domain)<a href="https://agentmods.dev/skills/cooltheworld/evolution-skills/cross-domain"><img src="https://agentmods.dev/badge/skills/cooltheworld/evolution-skills/cross-domain.svg" alt="Measured on agentmods" 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 | $0.00028 | $0.01148 |
| Opus 5 | $0.00014 | $0.00574 |
| Sonnet 5 | $0.00006 | $0.00230 |
| Haiku 4.5 | $0.00003 | $0.00115 |
Grade A, and why
cross-domain 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 7d 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 — 71 lines — stays where its author put it; the contents beside it link to each section on GitHub.
A problem that resists its own field's first principles has often been solved elsewhere, years ago, under a different name. Strip the jargon until the structure shows, find the isomorphic problems distant fields have already met, and transfer the mechanisms that solved them — only the parts that survive the move.
Write in the language the user writes in.
1. Strip the jargon
If the argument is missing or lacks the specific sticking point, ask one question for the missing piece and stop.
Restate the problem as one a person in any field could face — nouns replaced by roles (a scarce resource, a feedback loop, a trust gap, a queue). Then find three things:
- Underlying structure — the shape of the problem once the roles are named.
- Core tension — the two things that cannot both be had, stated as X pulls against Y because Z. The sticking point is a symptom of it.
- Why ordinary solutions fail — the fixes the user's field reaches for, and the specific reason each one breaks against that structure.
Synonyms are not abstraction: a restatement that keeps the field's nouns turns step 2 into a search for neighbours. Test it: a nurse, a farmer and a general should each be able to say "I have had that one." If a solution the user's field already uses would resolve the tension as stated, the tension is not yet the core one.
Done when the restatement contains no term from the user's field, and names the underlying structure, the core tension as two things pulling against each other, and one specific reason each ordinary solution fails.
2. Find isomorphic problems
Search historical cases and at least three fields for problems with the same underlying structure. Choose fields distant from each other and from the user's — distance measured by how little the practitioners would recognise each other's vocabulary. Historical cases come in addition to the three fields, and each carries a documented outcome.
Match on structure: a case that shares the user's nouns but faces a different tension is decoration; a case with alien nouns that faces the same tension, and whose ordinary solutions failed for the same reason, is isomorphic.
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.
- 7d ago First seen · 71 lines · 28 tokens per session scan A 6098e91d1619
cross-domain is a skill published in the GitHub repository coolTheWorld/evolution-skills (5 stars, last pushed 5d ago), licensed Apache-2.0. It adds 28 tokens to every session and 1,148 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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