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 TalissonVitorino/kmp-ios-skills --skill perfetto-trace-analysisgit clone --depth 1 https://github.com/TalissonVitorino/kmp-ios-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/talissonvitorino/kmp-ios-skills/perfetto-trace-analysis)<a href="https://agentmods.dev/skills/talissonvitorino/kmp-ios-skills/perfetto-trace-analysis"><img src="https://agentmods.dev/badge/skills/talissonvitorino/kmp-ios-skills/perfetto-trace-analysis/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/talissonvitorino/kmp-ios-skills/perfetto-trace-analysis"><img src="https://agentmods.dev/badge/skills/talissonvitorino/kmp-ios-skills/perfetto-trace-analysis.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 | $0.00084 | $0.01558 |
| Opus 5 | $0.00042 | $0.00779 |
| Sonnet 5 | $0.00017 | $0.00312 |
| Haiku 4.5 | $0.00008 | $0.00156 |
Grade A, and why
perfetto-trace-analysis 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 12d 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.
Copies of this mod
1 near-identical copy found in the catalogue:
- perfetto-trace-analysis — 97% identical, 2 lines differ
How it starts
The opening of the file, as written. The whole thing — 82 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Resources
- Domain Hints: Reference files for specific performance areas:
CPU,Graphics,I/O,IPC,Memory,Power. These files each contain multiple expert-vetted, powerful trace analysis techniques to steer and aid in the analysis. - Perfetto SQL Reference: Reference guidelines for translating intents into valid queries are located in the SQL reference. You must read this reference and follow its Execution Protocol for all SQL generation.
Setup Phase (Mandatory)
- Initialize Scratchpad (Chain of Evidence):
- Maintain your working memory in a local scratchpad file located in the exact same directory as the target trace file.
- Name the file using the trace's filename appended with
_analysis.md(e.g.,[trace_filename]_analysis.md). Before creating it, check if a file with that name already exists by listing the directory's contents---to avoid biasing your investigation, DO NOT read the file's contents to check for its existence. If it does, append an incrementing version number (e.g.,_v2.md,_v3.md) until you find an available filename. You MUST hardcode this exact filename in all subsequent tool calls. - Use this scratchpad STRICTLY to log verified facts: timestamps, slice names, thread IDs (utid/tid), and thread states.
- DO NOT write preliminary hypotheses or premature conclusions in the scratchpad. It is a strict Chain of Evidence.
- Review Domain Hints: Read the Domain Hints in each file to get a high-level overview of what techniques are possible. Make sure to use this baseline knowledge when researching and retrieving hints during the ongoing investigation.
- Review SQL Reference: Read the SQL reference in
references/sql.mdand follow its Execution Protocol for all SQL generation. Do not guess schemas. - Target Resolution: If the user's request is broad (e.g., "why is the app slow?") and doesn't specify a package name:
- Execute a query to identify the active application:
sql INCLUDE PERFETTO MODULE android.startup.startups; SELECT package FROM android_startups; - If multiple packages are returned, ask the user to choose one. Save the chosen
package_nameto your scratchpad.
- Execute a query to identify the active application:
What ships with it
8 files 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.
- 12d ago First seen · 82 lines · 84 tokens per session scan A e37b31a67baf
perfetto-trace-analysis is a skill published in the GitHub repository TalissonVitorino/kmp-ios-skills (12 stars, last pushed 17d ago), licensed MIT. It adds 84 tokens to every session and 1,558 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 2026-08-30.
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