Agent skill

Session Report

by hoangsonww in hoangsonww/Claude-Code-Agent-Monitor

Generate a comprehensive session report with per-model token usage (input, output, cacheread, cachewrite including compaction baselines), cost breakdown via the pricing engine, tool invocations…

MITAuto-check passed

Install Session Report

skills CLI
$ npx skills add hoangsonww/Claude-Code-Agent-Monitor --skill session-report -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install hoangsonww/Claude-Code-Agent-Monitor session-report --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/hoangsonww/Claude-Code-Agent-Monitor.git skills-src && mkdir -p .claude/skills && cp -r skills-src/plugins/ccam-analytics/skills/session-report .claude/skills/session-report && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
session-report
GitHub stars
1.1k
Token cost
~932 tokens
SKILL.md length
380 words
Files
2
Skills in repo
78
Repo updated
First seen
Licence
MIT

At a glance

Generate a comprehensive session report with per-model token usage (input, output, cacheread, cachewrite including compaction baselines), cost breakdown via the pricing engine, tool invocations…

  • Works in 8 steps: Session Overview → Token Usage (per model) → Cost Breakdown → …
  • Reviewing a specific session
  • SKILL.md covers Input, Data Sources, Report Sections and Output Format
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Session Report is an agent skill from hoangsonww/Claude-Code-Agent-Monitor. Generate a comprehensive session report with per-model token usage (input, output, cacheread, cachewrite including compaction baselines), cost breakdown via the pricing engine, tool invocations, agent hierarchy, compaction events, API errors, turn durations, and thinking block counts. Use when reviewing a specific session or summarizing activity over a date range.

Its SKILL.md is about 930 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files (for example `agents/openai.yaml`).

The repository describes itself as: 🚀 A real-time monitoring dashboard for Claude Code & Codex, built with SQLite3, Node.js, Express, React, Vite, TailwindCSS, & WebSockets. It tracks sessions, agent activity… The licence is MIT.

When your agent uses it

  • Reviewing a specific session
  • Summarizing activity over a date range

Example prompts

  • “/session-report”

Workflow steps

8 steps, taken from the step headings in SKILL.md.

  1. Session Overview
  2. Token Usage (per model)
  3. Cost Breakdown
  4. Agent Hierarchy
  5. Tool Activity
  6. Compaction & Context Health
  7. API Errors
  8. Timeline

What it can do on your machine

Read from SKILL.md and the folder at commit 1a10d68. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Session Report loads about 932 tokens when it runs. Until then it costs about 96 tokens; SKILL.md has 380 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~96
When it runs · the whole SKILL.md, loaded when a task matches
~932

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from hoangsonww/Claude-Code-Agent-Monitor at commit 1a10d68, republished under its MIT licence (© hoangsonww). 380 words, ~932 tokens.

Download SKILL.mdSave it as .claude/skills/session-report/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.
name
session-report
description
Generate a comprehensive session report with per-model token usage (input, output, cache_read, cache_write including compaction baselines), cost breakdown via the pricing engine, tool invocations, agent hierarchy, compaction events, API errors, turn durations, and thinking block counts. Use when reviewing a specific session or summarizing activity over a date range.

Session Report

Generate a detailed session report from the Claude Code Agent Monitor.

Input

The user provides: $ARGUMENTS

This may be a session ID, "latest", or a date range like "last 24 hours".

Data Sources

All data comes from the Agent Monitor API at http://localhost:4820:

EndpointWhat it returns
GET /api/sessions/{id}Session with nested .agents[] and .events[]
GET /api/sessions?limit=50Session list with agent_count, last_activity, and inline cost per session (bulk pricing applied server-side)
GET /api/pricing/cost/{sessionId}{ total_cost, breakdown: [{ model, input_tokens, output_tokens, cache_read_tokens, cache_write_tokens, cost, matched_rule }] }
GET /api/events?session_id={id}Event stream: each has event_type, tool_name, summary, data (JSON), created_at
Key data points available per session
  • Status: active / completed / error / abandoned
  • Model: primary model (e.g. claude-sonnet-4-20250514)
  • Metadata (JSON): thinking_blocks count, turn_count, total_turn_duration_ms, usage_extras (service_tier, speed, inference_geo)
  • Token usage per model: Pricing breakdown reports input_tokens, output_tokens, cache_read_tokens, cache_write_tokens per model (baselines are pre-summed into these totals at the DB level)
  • Cost formula: (tokens / 1,000,000) × rate_per_mtok for each of 4 token types, using longest-match pricing rule
  • Agent hierarchy: recursive parent_agent_id tree, subagent_type (e.g. "task", "explore", "code-review", "compaction")
  • Event types: PreToolUse, PostToolUse, Stop, SubagentStop, SessionStart, SessionEnd, Notification, Compaction, APIError, TurnDuration

Report Sections

1. Session Overview
  • ID (first 16 chars), name, status, model, working directory
  • Start → end time, total duration
  • Turn count and avg turn duration (from metadata)
Show full SKILL.md (170 more words)Show less
2. Token Usage (per model)

Include these columns: Model, Input, Output, Cache Read, Cache Write, and Total. Show effective totals (current + baseline) since baselines preserve tokens lost during compaction. Calculate cache hit rate: cache_read / (cache_read + input) × 100.

3. Cost Breakdown

From /api/pricing/cost/{id} — show each model's cost with the matched pricing rule. Note rates are per million tokens.

4. Agent Hierarchy

Render the agent tree (main → subagents, with nested children). For each agent: name, type, subagent_type, status, task (first 60 chars), duration.

5. Tool Activity

Count PreToolUse events by tool_name. Flag tools that appear in error events. Note subagent spawns (tool_name = "Agent").

6. Compaction & Context Health
  • Count of Compaction events (each = context was compressed)
  • Baseline tokens recovered (sum of baseline_* columns)
  • Thinking block count from metadata
7. API Errors

List any APIError events with type (quota, rate_limit, overloaded) and message.

8. Timeline

Key lifecycle events: SessionStart → first tool → compactions → errors → Stop → SessionEnd. Include TurnDuration events.

Output Format

Clean Markdown: executive summary line, structured tables, agent tree, numbered timeline. Bold key metrics.

© hoangsonww, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 1 other file in plugins/ccam-analytics/skills/session-report of hoangsonww/Claude-Code-Agent-Monitor.

  • SKILL.md
  • agents/openai.yaml

Open the folder on GitHubat commit 1a10d68

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Questions about Session Report

What does Session Report do?

Generate a comprehensive session report with per-model token usage (input, output, cacheread, cachewrite including compaction baselines), cost breakdown via the pricing engine, tool invocations…. Session Report is an agent skill from hoangsonww/Claude-Code-Agent-Monitor. Generate a comprehensive session report with per-model token usage (input, output, cacheread, cachewrite including compaction baselines), cost breakdown via the pricing engine, tool invocations, agent hierarchy, compaction events, API errors, turn durations, and thinking block counts.

When should I use Session Report?

Session Report fits situations like: reviewing a specific session; summarizing activity over a date range.

How do I install Session Report in Claude Code?

Run `npx skills add hoangsonww/Claude-Code-Agent-Monitor --skill session-report -a claude-code`. Or copy the skill folder (plugins/ccam-analytics/skills/session-report in hoangsonww/Claude-Code-Agent-Monitor) into .claude/skills/session-report in your project. Claude Code loads it when a task matches its description.

How do I install Session Report in Codex?

Run `npx skills add hoangsonww/Claude-Code-Agent-Monitor --skill session-report -a codex`. Or copy the skill folder (plugins/ccam-analytics/skills/session-report in hoangsonww/Claude-Code-Agent-Monitor) into .agents/skills/session-report in your project. Codex loads it when a task matches its description.

Can I use Session Report in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add hoangsonww/Claude-Code-Agent-Monitor --skill session-report -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/session-report, .gemini/skills/session-report, .github/skills/session-report and .opencode/skills/session-report in your project.

What does Session Report need to run?

SKILL.md names no scripts, command-line tools or credentials: Session Report is instructions for the agent only.

Does Session Report access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Session Report safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Session Report use?

Session Report is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Session Report use?

About 932 tokens (SKILL.md is roughly 3.7k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

Who maintains Session Report?

hoangsonww (a GitHub user) maintains it in hoangsonww/Claude-Code-Agent-Monitor, which has 1,054 GitHub stars. The repository holds 78 skills in this directory. The repository was last updated on October 8, 2026.

Source: hoangsonww/Claude-Code-Agent-Monitor on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.