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/rse/ase/ase-task-preflightnpx skills add rse/ase --skill ase-task-preflightgit 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-task-preflight)<a href="https://agentmods.dev/skills/rse/ase/ase-task-preflight"><img src="https://agentmods.dev/badge/skills/rse/ase/ase-task-preflight.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 | $0.00050 | $0.01590 |
| Opus 5 | $0.00025 | $0.00795 |
| Sonnet 5 | $0.00010 | $0.00318 |
| Haiku 4.5 | $0.00005 | $0.00159 |
Grade A, and why
ase-task-preflight scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 3d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 167 lines — stays where its author put it; the contents beside it link to each section on GitHub.
@${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
$ARGUMENTS
@${CLAUDE_SKILL_DIR}/../../meta/ase-format-task.md @${CLAUDE_SKILL_DIR}/../../meta/ase-common-task.md @${CLAUDE_SKILL_DIR}/../../meta/ase-tenets.md @${CLAUDE_SKILL_DIR}/../../meta/ase-common-code.md
Procedure
-
Determine Task:
-
Set initially, with any leading and trailing whitespace stripped. Inherit the always existing from the current context. Inherit the always existing from the current context. Do not output anything.
-
React on task id:
-
-
Determine Operation:
-
Determine the current task plan content:
-
If the is still empty, complain and tell the user to use the
ase-code-resolve,ase-code-refactor,ase-code-craft, orase-task-editskills first to create a task plan. Then immediately stop processing this skill. -
Internalize the tenets stated by the plan:
-
-
Create Implementation Draft:
-
Perform a preflight of the implementation of by creating a draft for a corresponding, complete artifact change set which would fully implement the task plan . Store this artifact change set in unified diff format in .
Create this draft with the same rigor as the final implementation of the companion skill
ase-task-implement, because that skill later takes the draft over 1:1 -- the user is assumed to review the draft in between. Hence read the current content of every artifact the draft touches before drafting its hunks, so all context lines match the artifacts exactly and the diff would apply cleanly, and honor the task plan and the internalized tenets just as the final implementation would. Only the actual modification of the artifacts and the verification phase are deferred toase-task-implement. -
Append this artifact change set to the end of the with the following . If a section named
## IMPLEMENTATION DRAFTalready exists from a previous run of this skill, replace this entire existing section.Set to a run of backtick characters one longer than the longest backtick run occurring anywhere inside , but to at least three, so a diff which itself carries fenced code blocks (e.g. one over Markdown artifacts) cannot terminate the block prematurely.
IMPLEMENTATION DRAFT
text
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Update with the current time in ISO-style format, which has to be determined by calling the
ase_timestamp(format: "yyyy-LL-dd HH:mm")tool of theaseMCP server and using thetextfield of its response. Update theModified: ...frontmatter key of with the new value, creating the whole key at its position in the key order of the plan if the plan does not carry it yet. Do not output anything.
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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.
- 3d ago First seen · 167 lines · 50 tokens per session scan A fba404a96a4a
ase-task-preflight is a skill published in the GitHub repository rse/ase (47 stars, last pushed 6d ago), licensed Apache-2.0. It adds 50 tokens to every session and 1,590 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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