session-watch

session-watch is a skill for Claude Code, Codex from hideki5123/agent-skill-set. It costs 226 tokens per session (3,723 once invoked), scanned C, original, no licence file.

A read-only monitoring tool for another running Claude Code session. It watches the session and explains its activity in Japanese, including technical terms, and can target a chosen session.

In plain words
What is it for?
It helps monitor and narrate another session's commands and progress in real time.
Why use it?
It lets someone follow an active coding session without taking control of it. Detailed explanations make the work easier to understand for Japanese-speaking observers.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

Good fit It helps monitor and narrate another session's commands and progress in real time.

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Install with agentmods
npx agentmods add skills/hideki5123/agent-skill-set/session-watch
Install

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.

Any agent
npx skills add hideki5123/agent-skill-set --skill session-watch
Clone the repo
git clone --depth 1 https://github.com/hideki5123/agent-skill-set

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 session-watch

README.md
[![agentmods](https://agentmods.dev/badge/skills/hideki5123/agent-skill-set/session-watch/github.svg)](https://agentmods.dev/skills/hideki5123/agent-skill-set/session-watch)
Your own site
<a href="https://agentmods.dev/skills/hideki5123/agent-skill-set/session-watch"><img src="https://agentmods.dev/badge/skills/hideki5123/agent-skill-set/session-watch/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 session-watch

Your own site · 80×15
<a href="https://agentmods.dev/skills/hideki5123/agent-skill-set/session-watch"><img src="https://agentmods.dev/badge/skills/hideki5123/agent-skill-set/session-watch.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 226 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,723 The whole file, excluding the scripts and references it only reads on demand.
Security scan C 2 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown 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 $0.00226 $0.03723
Opus 5.5 $0.00090 $0.01489
Sonnet 5.5 $0.00045 $0.00745
Haiku 4.5 $0.00023 $0.00372

Measured 1mo ago against content hash a984b98892e3, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade C, and why

session-watch scanned grade C with 2 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 1mo 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.

Strips warnings and disclaimersmediumAnti-refusal

Omitting safety caveats hides risk from the user and is a common jailbreak preamble.

Pick a brief gloss (1-2 sentences); do not lecture.

Reads agent configuration directoriesmediumAgent snooping

.claude/, .codex/, .gemini/ hold keys, settings and other credentials a mod has no legitimate need for.

find ~/.claude/projects -maxdepth 2 -name "<session-id>.jsonl" 2>/dev/null
session-watch/SKILL.md · 315 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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. 1mo ago First seen · 315 lines · 226 tokens per session scan C a984b98892e3

Subscribe to this mod's changes

session-watch is a skill published in the GitHub repository hideki5123/agent-skill-set (2 stars, last pushed 18d ago), with no licence file. It adds 226 tokens to every session and 3,723 once invoked, about $0.0009 per session on Opus 5.5. A static security scan graded it C with 2 findings (strips warnings and disclaimers, reads agent configuration directories). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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