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 mocasus/paleo --skill paleo-jsongit clone --depth 1 https://github.com/mocasus/paleoWrote 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/mocasus/paleo/paleo-json)<a href="https://agentmods.dev/skills/mocasus/paleo/paleo-json"><img src="https://agentmods.dev/badge/skills/mocasus/paleo/paleo-json/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/mocasus/paleo/paleo-json"><img src="https://agentmods.dev/badge/skills/mocasus/paleo/paleo-json.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 | $0.00067 | $0.00362 |
| Opus 5 | $0.00034 | $0.00181 |
| Sonnet 5 | $0.00013 | $0.00072 |
| Haiku 4.5 | $0.00007 | $0.00036 |
Grade A, and why
paleo-json 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 9d 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
paleo-json
Compact structured output. JSON / YAML / tables → minimal tokens, still valid.
Rules
- Minify: remove whitespace between tokens (valid JSON stays parseable).
- Collapse arrays of repeated shapes into a count + 1 example when the consumer allows.
- Keep keys verbatim unless a documented short alias exists — never invent keys.
- Preserve: values, types, order where it matters, escaping.
- YAML: drop comments, shorten, keep indentation minimal but valid.
- Numbers/booleans/null: never reformat in ways that change type.
Levels
lite: minify whitespace only (safest).full(default): minify + collapse repetitive array tails.ultra: minify + alias keys per a provided map.
Switch
paleo-json/compact json/minifyon.pretty printoff.
Gotchas
- Always return valid, parseable output — a broken payload costs more than the tokens saved.
- Don't alias keys unless the consumer expects them; default = keep keys.
- Streaming/chunked JSON: minify only after the full object is known.
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.
- 9d ago First seen · 35 lines · 67 tokens per session scan A 2957ab2edbf1
paleo-json is a skill published in the GitHub repository mocasus/paleo (20 stars, last pushed 1mo ago), licensed MIT. It adds 67 tokens to every session and 362 once invoked, about $0.0003 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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