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 rse/ase --skill ase-docs-shortengit clone --depth 1 https://github.com/rse/aseWrote 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/rse/ase/ase-docs-shorten)<a href="https://agentmods.dev/skills/rse/ase/ase-docs-shorten"><img src="https://agentmods.dev/badge/skills/rse/ase/ase-docs-shorten/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/rse/ase/ase-docs-shorten"><img src="https://agentmods.dev/badge/skills/rse/ase/ase-docs-shorten.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 | $0.00088 | $0.05390 |
| Opus 5 | $0.00044 | $0.02695 |
| Sonnet 5 | $0.00018 | $0.01078 |
| Haiku 4.5 | $0.00009 | $0.00539 |
Grade A, and why
ase-docs-shorten scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 528 lines — stays where its author put it; the contents beside it link to each section on GitHub.
@${CLAUDE_SKILL_DIR}/../../meta/ase-control.md @${CLAUDE_SKILL_DIR}/../../meta/ase-skill.md @${CLAUDE_SKILL_DIR}/../../meta/ase-dialog.md @${CLAUDE_SKILL_DIR}/../../meta/ase-getopt.md
$ARGUMENTS
Ground Rule
This skill removes text, so unlike ase-docs-refine it MAY lose
content. It still MUST NOT corrupt whatever survives: every fact,
number, technical term, qualifier, and negation which survives into
the shortened text stays exactly as it was, no content is invented,
the order of the surviving argument is kept, and fenced code blocks,
inline code spans, link targets, Markdown frontmatter, and the heading
structure are never touched.
The skill also MUST NOT shorten beyond the target: it stops at the first change which reaches the target, so a document is never cut more than the user asked for.
-
-
Determine the target length from the two mutually exclusive options. Set to and to , treating a non-numeric or negative value as
0. Then dispatch:-
Only output the following and then IMMEDIATELY STOP all further skill processing:
-
Only output the following and then IMMEDIATELY STOP all further skill processing:
Do not output anything else in this substep.
-
-
Silently resolve
<getopt-arguments/>to the list of individual document files, expanding any directory or wildcard reference with theGlobtool. Then dispatch:-
Only output the following and then IMMEDIATELY STOP all further skill processing:
-
A target length applies to one document, so a reference which expands to several documents is ambiguous: it is unclear whether the target bounds each document or their sum. Set to the number of documents, then only output the following and IMMEDIATELY STOP all further skill processing:
Set to the single document of .
-
-
What ships with it
1 file 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.
- yesterday First seen · 528 lines · 88 tokens per session scan A 252c77041c0e
ase-docs-shorten is a skill published in the GitHub repository rse/ase (47 stars, last pushed today), licensed Apache-2.0. It adds 88 tokens to every session and 5,390 once invoked, about $0.0004 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 2026-09-07.
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