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/ethanolivertroy/my-agent-stuff/mischief-managednpx skills add ethanolivertroy/my-agent-stuff --skill mischief-managedgit clone --depth 1 https://github.com/ethanolivertroy/my-agent-stuffWrote 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/ethanolivertroy/my-agent-stuff/mischief-managed)<a href="https://agentmods.dev/skills/ethanolivertroy/my-agent-stuff/mischief-managed"><img src="https://agentmods.dev/badge/skills/ethanolivertroy/my-agent-stuff/mischief-managed.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 | $0.00049 | $0.00749 |
| Opus 5 | $0.00024 | $0.00375 |
| Sonnet 5 | $0.00010 | $0.00150 |
| Haiku 4.5 | $0.00005 | $0.00075 |
Grade A, and why
mischief-managed scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 6d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 101 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Mischief Managed - Session Summary to Obsidian
Write a compact session note into an Obsidian vault so the work is searchable and resumable later. This is a summary, not a full transcript. For transcript-style capture in Pi, use the built-in /export command or pi --export.
Obsidian Vault Location
Use this priority order:
- If the user gives a vault path or note path, use it.
- If
OBSIDIAN_VAULT_PATHis set, write to$OBSIDIAN_VAULT_PATH/Agent-Sessions/. - If
~/Obsidianexists, write to~/Obsidian/Agent-Sessions/. - Otherwise ask once for the Obsidian vault path before writing.
Do not silently write outside an Obsidian vault unless the user explicitly asks.
Filename:
{YYYY-MM-DD-HHMM}-{slug}.md
Use a 2-4 word kebab-case slug based on the completed work.
Metadata
Run one shell command to collect context:
git rev-parse --abbrev-ref HEAD 2>/dev/null || echo ""; basename "$(git rev-parse --show-toplevel 2>/dev/null)" 2>/dev/null || echo ""; date +%Y-%m-%d-%H%M; date +"%b %d, %Y"; pwd; git remote get-url origin 2>/dev/null || echo ""
Map output to:
BRANCHREPODATETIMEPRETTY_DATEDIRREPO_URL
If the git values are blank, omit them from frontmatter.
Note Shape
---
date: {DATETIME}
branch: {BRANCH}
repo: {REPO}
directory: {DIR}
tags: [agent-session, codex-session, {tag1}, {tag2}]
---
# Session: {SLUG} - {PRETTY_DATE}
## Summary
2-3 sentences describing what changed and why.
## What Was Discussed
- Short bullets with useful context.
## Key Decisions
- decision - rationale
## Code Changes
- `path` - what changed and why
## Tests & Validation
- `command` - result
## Risks / Caveats
- Anything unresolved, unverified, or worth revisiting.
## Questions & Follow-ups
- [ ] Concrete next action
Required sections: Summary, What Was Discussed, Key Decisions, and Questions & Follow-ups.
Include Code Changes, Tests & Validation, and Risks / Caveats only when meaningful.
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.
- 6d ago First seen · 101 lines · 49 tokens per session scan A 6ca75f40bf94
mischief-managed is a skill published in the GitHub repository ethanolivertroy/my-agent-stuff (11 stars, last pushed 1mo ago), licensed MIT. It adds 49 tokens to every session and 749 once invoked, about $0.0002 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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