agent-activity

agent-activity is a skill for Claude Code from sonichi/sutando. It costs 0 tokens per session (1,515 once invoked), scanned A, original, MIT.

A feature that records an agent's live status as event rows and shows them in a desktop chat interface. It can show current work in a room and keep the full history in an events panel.

In plain words
What is it for?
Use it to publish processing, thinking, tool-use, notice, and completion events to the client through a JSON Lines state file.
Why use it?
It makes an agent's progress visible instead of leaving users unsure whether work is still running. The event log also preserves activity after the live display changes.

Skill for Claude Code

Written for Claude Code: PreToolUse hook event. Also seen: names the TodoWrite tool; mentions Claude Code.

Good fit Use it to publish processing, thinking, tool-use, notice, and completion events to the client through a JSON Lines state file.

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Install with agentmods
npx agentmods add skills/sonichi/sutando/agent-activity
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 sonichi/sutando --skill agent-activity
Clone the repo
git clone --depth 1 https://github.com/sonichi/sutando

Made for: Claude Code.

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 agent-activity

README.md
[![agentmods](https://agentmods.dev/badge/skills/sonichi/sutando/agent-activity/github.svg)](https://agentmods.dev/skills/sonichi/sutando/agent-activity)
Your own site
<a href="https://agentmods.dev/skills/sonichi/sutando/agent-activity"><img src="https://agentmods.dev/badge/skills/sonichi/sutando/agent-activity/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 agent-activity

Your own site · 80×15
<a href="https://agentmods.dev/skills/sonichi/sutando/agent-activity"><img src="https://agentmods.dev/badge/skills/sonichi/sutando/agent-activity.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 0 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,515 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 $0.00000 $0.01515
Opus 5 $0.00000 $0.00758
Sonnet 5 $0.00000 $0.00303
Haiku 4.5 $0.00000 $0.00152

Measured 2d ago against content hash 6f0e4d8f9cdc, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

agent-activity 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 2d ago.

The scan reads SKILL.md. This mod also ships 2 executable files (hooks/activity-hook.py, scripts/activity.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

skills/agent-activity/SKILL.md · 85 lines

How it starts

The opening of the file, as written. The whole thing — 85 lines — stays where its author put it; the contents beside it link to each section on GitHub.

agent-activity

Streams what the agent is doing into the room, as rows the desktop client renders in an events drawer above the composer (collapsed: avatar, pulsing dots, the newest line rolling in; expanded: the live rows of the task in progress) and in the console dock's Events panel (the full history). Client side: ag2-space/cinny-webclient #888.

Rows

One JSON object per line at <workspace>/state/agent-activity.jsonl, served to the client by the loopback media route as /media/state/agent-activity.jsonl:

field meaning
ts epoch seconds
room room id the row belongs to; the drawer in that room shows it. Absent → dock only
kind processing (picked the message up) · thinking (narration while deciding) · working (the tool in use, one line) · notice (PR heartbeats and the like) · done
line the text, plain
task {id, from, text} — the user message this row belongs to (from an mxid, text ≤160 chars)
done true closes the task: all of its rows leave the drawer (the dock keeps them)
task.event event id of the user message (source_message_id); the client mounts the per-message card under it
task.into on a consolidated done: event id of the message whose reply answered this one too

A notice row reading queued is written by the task watcher when the file lands, before any turn has it (activity.py queued --task-file …; only for files that name a room and a message).

A task's rows are live until its done row; a task-less row is live 15 minutes. The drawer shows only live rows and hides itself when none is live. Rows are flat: the client marks the first row of each task with a square dot, never folds.

Writing rows

S=skills/agent-activity/scripts
python3 $S/activity.py append "picked up your message" --kind processing \
    --task-id task-… --from '@owner:server' --text "<their message>" [--room '!room:server']
python3 $S/activity.py append "PR #123 CI green" --kind notice
python3 $S/activity.py done "the drawer is one rolling line" --task-id task-…

Read the full file on GitHub · 85 lines

Files

What ships with it

3 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.

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. 2d ago Changed · +11 lines 6f0e4d8f9cdc
  2. 3d ago First seen · 74 lines · 0 tokens per session scan A e4dbd9f75285

Subscribe to this mod's changes

agent-activity is a skill published in the GitHub repository sonichi/sutando (394 stars, last pushed today), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 1,515 tokens. 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 2026-09-06.

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