Agent skill

Agentium

Query and control Dave agentic sessions from the command line via the agentium CLI (crates/agentiumcli), and find your OWN session's agentium: reference.

Custom licenceAuto-check passed

Install Agentium

skills CLI

$ npx skills add damus-io/notedeck --skill agentium -a claude-code

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

GitHub CLI

$ gh skill install damus-io/notedeck agentium --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/damus-io/notedeck.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.claude/skills/agentium .claude/skills/agentium && 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/

Paste into Claude Code

Install the "agentium" agent skill from https://github.com/damus-io/notedeck/tree/master/.claude/skills/agentium into .claude/skills/agentium/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "agentium", then confirm the skill loads.

Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

$skill-installer

$skill-installer install https://github.com/damus-io/notedeck/tree/master/.claude/skills/agentium

Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.

skills CLI

$ npx skills add damus-io/notedeck --skill agentium -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install damus-io/notedeck agentium --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/damus-io/notedeck.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.claude/skills/agentium .agents/skills/agentium && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "agentium" agent skill from https://github.com/damus-io/notedeck/tree/master/.claude/skills/agentium into .agents/skills/agentium/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "agentium", then confirm the skill loads.

Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add damus-io/notedeck --skill agentium -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install damus-io/notedeck agentium --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/damus-io/notedeck.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.claude/skills/agentium .cursor/skills/agentium && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "agentium" agent skill from https://github.com/damus-io/notedeck/tree/master/.claude/skills/agentium into .cursor/skills/agentium/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "agentium", then confirm the skill loads.

Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

gemini skills install

$ gemini skills install https://github.com/damus-io/notedeck.git --path .claude/skills/agentium

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add damus-io/notedeck --skill agentium -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install damus-io/notedeck agentium --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/damus-io/notedeck.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.claude/skills/agentium .gemini/skills/agentium && rm -rf skills-src

Use ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.

Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/

Paste into Gemini CLI

Install the "agentium" agent skill from https://github.com/damus-io/notedeck/tree/master/.claude/skills/agentium into .gemini/skills/agentium/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "agentium", then confirm the skill loads.

Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

GitHub CLI

$ gh skill install damus-io/notedeck agentium

Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).

skills CLI

$ npx skills add damus-io/notedeck --skill agentium -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/damus-io/notedeck.git skills-src && mkdir -p .github/skills && cp -r skills-src/.claude/skills/agentium .github/skills/agentium && rm -rf skills-src

Use ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.

GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/

Paste into GitHub Copilot

Install the "agentium" agent skill from https://github.com/damus-io/notedeck/tree/master/.claude/skills/agentium into .github/skills/agentium/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "agentium", then confirm the skill loads.

GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add damus-io/notedeck --skill agentium -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install damus-io/notedeck agentium --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/damus-io/notedeck.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.claude/skills/agentium .opencode/skills/agentium && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "agentium" agent skill from https://github.com/damus-io/notedeck/tree/master/.claude/skills/agentium into .opencode/skills/agentium/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "agentium", then confirm the skill loads.

OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

Facts

Skill name: agentium
GitHub stars: 316
Token cost: ~7.1k tokens
SKILL.md length: 3,229 words
Files: 1
Skills in repo: 4
Repo updated: Oct 6, 2026
First seen: Oct 7, 2026
Licence: Custom licence

At a glance

Query and control Dave agentic sessions from the command line via the agentium CLI (crates/agentiumcli), and find your OWN session's agentium: reference.

An agent running inside a Dave session needs its own ref (e.g
SKILL.md covers Running it, Logging in, The agentium: reference and Finding your OWN session ref, plus 15 more sections
Calls cargo, jq and git

What it does

Agentium is an agent skill from damus-io/notedeck. Query and control Dave agentic sessions from the command line via the agentium CLI (crates/agentiumcli), and find your OWN session's agentium: reference. Use when an agent running inside a Dave session needs its own ref (e.g. for a headway done-comment), to list sibling sessions, or to pull another session's detail or full conversation transcript — e.g. "what's my agentium ref", "list the running agent sessions", "show sessions in this cwd", "read session X's transcript".

Its SKILL.md is about 7.1k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.

When your agent uses it

An agent running inside a Dave session needs its own ref (e.g

Example prompts

“s detail or full conversation transcript — e.g.”
“s my agentium ref”
“list the running agent sessions”
“/agentium”

What it can do on your machine

Read from SKILL.md and the folder at commit 33e57be. 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
Shell commands in SKILL.md call:
- cargo
- jq
- git
- codex
- sh
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md. Its commands use git, which can reach the network depending on how they are called.
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

Agentium loads about 7.1k tokens when it runs. Until then it costs about 122 tokens; SKILL.md has 3,229 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~122
When it runs · the whole SKILL.md, loaded when a task matches: ~7.1k

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

Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 3,229 words (~7,147 tokens).

“agentium is a CLI over a running notedeck's embedded relay. It reads (and, in time, controls) Dave agentic sessions — the Claude/Codex sessions Dave spawns — by folding their kind-31988 session-state events. Like the headway and notebook CLIs it keeps…”

— opening of SKILL.md by damus-io, Custom licence

name: agentium

Outline of SKILL.md

Agentium session CLI
Running it
Logging in
The agentium: reference
Finding your OWN session ref
list — read sessions
watch — live dashboard of every session
Selecting a session
Reading without a relay round-trip
show — session detail
log — conversation transcript
grep — search message text across sessions
resume — reopen a closed session
send — send a message to a session
spawn — create a new session on a host
Retrying a spawn is safe — but check list first
interrupt — abort a session's in-flight turn
approve / deny — answer a pending permission request
mode — change a session's permission mode
config — manage run configs
Command surface

Read the full SKILL.md on GitHub

Files

Just SKILL.md in .claude/skills/agentium of damus-io/notedeck.

Open the folder on GitHubat commit 33e57be

Compare with similar skills

Agentium next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Agentium compared with similar skills
Skill	Stars	Used in	Tokens	Auto-check	Licence	Repo updated
Agentium this skilldamus-io/notedeck	316	—	~7.1k	Automated safety check: Pass	Custom licence	2 days ago
Session Handoffsickn33/agentic-awesome-skills	47k	—	~1.8k	Automated safety check: Notes	MIT	today
Sessionanthropics/claude-for-legal	9.6k	3 repos	~478	Automated safety check: Pass	Apache-2.0	9 days ago
Session History Searchslopus/happy	24k	—	~3.1k	Automated safety check: Pass	MIT	today
Session Handoffdavila7/claude-code-templates	32k	2 repos	~1.6k	Automated safety check: Pass	MIT	today
Read Sessionasgeirtj/system_prompts_leaks	69k	—	~2.4k	Automated safety check: Pass	CC0-1.0	yesterday

Similar skills

Session Handoff
sickn33/agentic-awesome-skills
A skill your agent uses when context approaches capacity, before /clear or /compact, when switching tasks, or when ending a coding session: produces a structured handoff artifact for the next session.
47k GitHub stars~1.8k tokensUpdated today
Agent WorkflowsAuto-check: notes
Session
anthropics/claude-for-legal
Official
Run a focused N-question study session on a subject — MBE, essay, or flashcards.
9.6k GitHub starsUsed in 3 repos~478 tokens
EducationAuto-check passed
Session History Search
slopus/happy
Searches past Claude Code, Codex and Cursor sessions and summarizes what was worked on, tried or decided, using extraction scripts instead of reading raw logs.
24k GitHub stars~3.1k tokensUpdated today
Agent WorkflowsAuto-check passed
Session Handoff
davila7/claude-code-templates
Creates comprehensive handoff documents for seamless AI agent session transfers.
32k GitHub starsUsed in 2 repos~1.6k tokens
Agent WorkflowsAuto-check passed
Read Session
asgeirtj/system_prompts_leaks
Locate and read Muse Code's OWN session logs — the current session or a prior one.
69k GitHub stars~2.4k tokensUpdated yesterday
Auto-check passed
Coding Agent Session Finder
code-yeongyu/oh-my-openagent
Finds, reads and reconstructs past coding-agent sessions across Codex, Claude, OpenCode, Senpi and many other local agent logs.
70k GitHub stars~2.8k tokensUpdated today
Agent WorkflowsAuto-check passed

Questions about Agentium

What does Agentium do?

Query and control Dave agentic sessions from the command line via the agentium CLI (crates/agentiumcli), and find your OWN session's agentium: reference. Agentium is an agent skill from damus-io/notedeck. Query and control Dave agentic sessions from the command line via the agentium CLI (crates/agentiumcli), and find your OWN session's agentium: reference.

When should I use Agentium?

Agentium fits situations like: an agent running inside a Dave session needs its own ref (e.g.

How do I install Agentium in Claude Code?

Run `npx skills add damus-io/notedeck --skill agentium -a claude-code`. Or copy the skill folder (.claude/skills/agentium in damus-io/notedeck) into .claude/skills/agentium in your project. Claude Code loads it when a task matches its description.

How do I install Agentium in Codex?

Run `npx skills add damus-io/notedeck --skill agentium -a codex`. Or copy the skill folder (.claude/skills/agentium in damus-io/notedeck) into .agents/skills/agentium in your project. Codex loads it when a task matches its description.

Can I use Agentium 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 damus-io/notedeck --skill agentium -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/agentium, .gemini/skills/agentium, .github/skills/agentium and .opencode/skills/agentium in your project.

What does Agentium need to run?

Going by SKILL.md and its folder, Agentium needs the command-line tools its instructions call (cargo, jq, git, codex and sh).

Does Agentium access the network?

SKILL.md contains no URLs. Its commands use git, which can reach the network depending on how they are called. This is read from the text; nothing was executed.

Is Agentium 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 Agentium use?

Agentium has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.

How many tokens does Agentium use?

About 7.1k tokens (SKILL.md is roughly 29k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Agentium?

Skills that share tags, products or a category with Agentium: Session Handoff (sickn33/agentic-awesome-skills, 47k stars), Session (anthropics/claude-for-legal, 9.6k stars), Session History Search (slopus/happy, 24k stars) and Session Handoff (davila7/claude-code-templates, 32k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Agentium?

damus-io (a GitHub organization) maintains it in damus-io/notedeck, which has 316 GitHub stars. The repository holds 4 skills in this directory. The repository was last updated on October 6, 2026.

Source: damus-io/notedeck on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Agentium

Install Agentium

Facts

At a glance

What it does

When your agent uses it

Example prompts

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

Files

Compare with similar skills

Similar skills

Session Handoff

Session

Session History Search

Session Handoff

Read Session

Coding Agent Session Finder

More from damus-io/notedeck

Handoff

Notebook

Headway

Questions about Agentium