GocciaScript: Skill for Claude Code

.agents/skills/profile-report-review/SKILL.md

profile-report-review is a skill for Claude Code, Codex from frostney/GocciaScript. It costs 96 tokens per session (1,486 once invoked), scanned A, original, MIT.

A guide for reviewing saved performance reports from GocciaScript, a JavaScript-related project, including test262, a standard JavaScript language test suite, and benchmark runs.

In plain words
What is it for?
Use it to inspect profile data, compare runs over time, investigate slow paths, and turn findings into compiler improvements.
Why use it?
It helps compare compiler and virtual-machine performance using the correct files, settings, and measurements.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: installed under .agents/ (shared by several agents); mentions Codex.

This is frostney/GocciaScript's own configuration. It tells Claude Code and Codex how to work on GocciaScript itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything GocciaScript configures →

Reuse

Borrowing it

Nothing to install: this file belongs to frostney/GocciaScript. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/frostney/GocciaScript/main/.agents/skills/profile-report-review/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/frostney/GocciaScript

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for profile-report-review

README.md
[![agentmods](https://agentmods.dev/badge/skills/frostney/gocciascript/profile-report-review/github.svg)](https://agentmods.dev/skills/frostney/gocciascript/profile-report-review)
Your own site
<a href="https://agentmods.dev/skills/frostney/gocciascript/profile-report-review"><img src="https://agentmods.dev/badge/skills/frostney/gocciascript/profile-report-review/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.

agentmods 80×15 button for profile-report-review

Your own site · 80×15
<a href="https://agentmods.dev/skills/frostney/gocciascript/profile-report-review"><img src="https://agentmods.dev/badge/skills/frostney/gocciascript/profile-report-review.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 96 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,486 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00096 $0.01486
Opus 5 $0.00048 $0.00743
Sonnet 5 $0.00019 $0.00297
Haiku 4.5 $0.00010 $0.00149

Measured 10d ago against content hash 4bd52e090d61, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

profile-report-review 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 10d 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.

.agents/skills/profile-report-review/SKILL.md · 116 lines

How it starts

The opening of the file, as written. The whole thing — 116 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Profile Report Review

Use this skill to review already-uploaded GocciaScript VM profile reports from main CI. Do not generate new profiles or change CI unless the user explicitly asks.

Sources

Prefer the exact GitHub Actions artifact when reviewing a specific run. Use Blob daily pointers for retained main-run history and window comparison.

  • test262-profile artifact / test262-profiles/ Blob namespace: full-corpus conformance-profile runs. Check commit SHA, test262 SHA, mode, corpus size, timeout/memory settings, and wrapper-infra counts before comparing trends. The run block carries durationSeconds, passed, failed, timeouts, totalRun, and test262Sha; pathBreakdown[] carries per-path totalOpcodes/allocations/functionSelfTimeNs.
  • benchmark-profile artifact / benchmark-profiles/ Blob namespace: deterministic bytecode benchmark profiles. Check commit SHA, deterministic mode, profile count, benchmark file set, and whether the normal benchmark baseline for the same run moved in the same direction. Per-file data is under pathBreakdown[] (totalOpcodes, functionSelfTimeNs); benchmark deterministic mode records allocations as 0 (not tracked here — use test262 for allocation trends).

If both artifact and Blob payloads exist for the same run, confirm commit SHA, mode, generated timestamp, and profile count match before using them together.

Profile artifacts are retained ~30 days, so review the whole retained window, not two runs. Two adjacent runs cannot separate a real change from runner noise. Enumerate every run's artifact and build a time series:

gh api --paginate 'repos/{owner}/{repo}/actions/artifacts?per_page=100' \
  --jq '.artifacts[] | select(.name=="benchmark-profile" and .expired==false)
        | [.created_at, (.workflow_run.id|tostring), .workflow_run.head_sha] | @tsv'

benchmark-profile is tiny (~60 KB) — download the full window. test262-profile is large (~90 MB each) — extract only *-aggregate.json and discard the details unless a specific run warrants a deep dive. Map each commit to its PR (git log -1 --format=%s <sha>) so any movement is attributable.

Read the full file on GitHub · 116 lines

Changes

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.

  1. 10d ago First seen · 116 lines · 96 tokens per session scan A 4bd52e090d61

Subscribe to this mod's changes

profile-report-review is a skill published in the GitHub repository frostney/GocciaScript (20 stars, last pushed yesterday), licensed MIT. It adds 96 tokens to every session and 1,486 once invoked, about $0.0005 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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