Atlas / Skills / anthropics / Session Report

Session ReportSAFE

skills/anthropics/session-report

Official, Anthropic-managed directory of high quality Claude Code Plugins.

Verdict
SAFE
Grade
B
Trust score
89 /100
Version
—
Hosts
2 documented
License
Apache-2.0
Stars
37,302
01

Overview

Official, Anthropic-managed directory of high quality Claude Code Plugins.

Read from source at commit 76137dccbc88OBSERVED · 2026-10-02
02

Host compatibility

What the documentation claims. We have not run a compatibility test.

HostStatusNotes
claude-codementioned
cursormentioned
03

What it tells the agent

The instruction file, verbatim from the audited commit — this is the text the model reads, and the surface the audit's instruction layer examines. Quoted here so you can judge it without cloning anything.

---
name: session-report
description: Generate an explorable HTML report of Claude Code session usage (tokens, cache, subagents, skills, expensive prompts) from ~/.claude/projects transcripts.
---

# Session Report

Produce a self-contained HTML report of Claude Code usage and save it to the current working directory.

## Steps

1. **Get data.** Run the bundled analyzer (default window: last 7 days; honor a different range if the user passed one, e.g. `24h`, `30d`, or `all`). The script `analyze-sessions.mjs` lives in the same directory as this SKILL.md — use its absolute path:
   ```sh
   node <skill-dir>/analyze-sessions.mjs --json --since 7d > /tmp/session-report.json
   ```
   For all-time, omit `--since`.

2. **Read** `/tmp/session-report.json`. Skim `overall`, `by_project`, `by_subagent_type`, `by_skill`, `cache_breaks`, `top_prompts`.

3. **Copy the template** (also bundled alongside this SKILL.md) to the output path in the current working directory:
   ```sh
   cp <skill-dir>/template.html ./session-report-$(date +%Y%m%d-%H%M).html
   ```

4. **Edit the output file** (use Edit, not Write — preserve the template's JS/CSS):
   - Replace the contents of `<script id="report-data" type="application/json">` with the full JSON from step 1. The page's JS renders the hero total, all tables, bars, and drill-downs from this blob automatically.
   - Fill the `<!-- AGENT: anomalies -->` block with **3–5 one-line findings**. Express figures as a **% of total tokens** wherever possible (total = `overall.input_tokens.total + overall.output_tokens`). One line per finding, exact markup:
     ```html
     <div class="take bad"><div class="fig">41.2%</div><div class="txt"><b>cc-monitor</b> consumed 41% of the week across just 3 sessions</div></div>
     ```
     Classes: `.take bad` for waste/anomalies (red), `.take good` for healthy signals (green), `.take info` for neutral facts (blue). The `.fig` is one short number (a %, a count, or a multiplier like `12×`). The `.txt` is one plain-English sentence naming the project/skill/prompt; wrap the subject in `<b>`. Look for: a project or skill eating a disproportionate share, cache-hit <85%, a single prompt >2% of total, subagent types averaging >1M tokens/call, cache breaks clustering.
   - Fill the `<!-- AGENT: optimizations -->` block (at the **bottom** of the page) with 1–4 `<div class="callout">` suggestions tied to specific rows (e.g. "`/weekly-status` spawned 7 subagents for 8.1% of total — scope it to fewer parallel agents").
   - Do not restructure existing sections.

5. **Report** the saved file path to the user. Do not open it or render it.

## Notes

- The template is the source of interactivity (sorting, expand/collapse, block-char bars). Your job is data + narrative, not markup.
- Keep commentary terse and specific — reference actual project names, numbers, timestamps from the JSON.
- `top_prompts` already includes subagent tokens and rolls task-notification continuations into the originating prompt.
- If the JSON is >2MB, trim `top_prompts` to 100 entries and `cache_breaks` to 100 before embedding (they should already be capped).
04

Trust audit

SAFEgrade B · trust 89/100 Nothing in the source contradicts what it says it does. Grade A is reserved for packages that have also passed the behavioural sandbox.

LayerWhat it checksResult
L0Provenance & inventoryPASS
L1Static analysis of the codePASS
L2Instruction surface (what it tells the agent)PASS
L3Class-specific surfacePASS
L4Behavioural (sandbox)SKIPPED

What the source does

Filesystem
none-observed
Network
none-observed
Shell
none-observed
Dependencies
pinned
Secrets in source
none-found

Findings (0)

No findings outside the package's declared scope.

Gates applied: no_behavioural_pass.

Audited 2026-10-02 · audit v0.4.1 · source sha 76137dccbc88full audit observations/trust-audit/skill/anthropics__session-report.json · Report an issue / request a re-scan
05

Audit history

Every audit this skill has had.

DateSourceVerdictGradeScoreChange
2026-10-0276137dccbc88SAFEB89first audit
06

Questions

What does the Session Report skill do?

Official, Anthropic-managed directory of high quality Claude Code Plugins.

Is Session Report safe to install?

The audit found nothing in the source that contradicts what it says it does, and graded it B (89/100). Grade A is held back for packages that have also passed a sandboxed behavioural run, which is why a clean skill reads B.

What can Session Report access on my machine?

The audit observed no filesystem, network or shell use at all in its source.

Which assistants does Session Report work with?

Its documentation mentions claude-code and cursor. That is what the text claims, not a compatibility test we ran.

How current is this page?

The grade is for one exact copy of the source (76137dccbc88), read on 2026-10-02. The repository is watched, and a new audit runs when it changes — this is the first audit.

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