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.
npx skills add ArchAstro/archagents --skill installgit clone --depth 1 https://github.com/ArchAstro/archagentsWrote 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.
[](https://agentmods.dev/skills/archastro/archagents/install)<a href="https://agentmods.dev/skills/archastro/archagents/install"><img src="https://agentmods.dev/badge/skills/archastro/archagents/install/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.
<a href="https://agentmods.dev/skills/archastro/archagents/install"><img src="https://agentmods.dev/badge/skills/archastro/archagents/install.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00069 | $0.00529 |
| Opus 5.5 | $0.00028 | $0.00212 |
| Sonnet 5.5 | $0.00014 | $0.00106 |
| Haiku 4.5 | $0.00007 | $0.00053 |
Grade C, and why
install 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 2mo 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.
Downloads and executes remote codehighSupply chain
curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.
curl -fsSL https://raw.githubusercontent.com/ArchAstro/archagents/main/install.sh | bash Makes network callslowCapability
Not a fault in itself. Listed so you know the mod talks to something, and to what.
allowed-tools: ["Bash(archagent:*)", "Bash(brew:*)", "Bash(curl:*)", "Bash(bash:*)", "Bash(sh:*)", "Bash(pwsh:*)", "Bash(powershell:*)"] This is a copy
94% identical to archagent-install — 2 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
What it actually says
Install ArchAgent CLI
Install or upgrade the public archagent binary from Homebrew or GitHub Releases.
Workflow
-
Check whether the CLI is already installed:
archagent --versionIf this succeeds, record the version.
-
If the CLI is present and the user didn't ask to upgrade, confirm the version and stop.
-
If the CLI is missing or the user asked to upgrade, install it using the public distribution path:
- On macOS, if Homebrew is available:
If the formula is already installed, run:brew install ArchAstro/tools/archagentbrew upgrade ArchAstro/tools/archagent - On Linux or macOS without Homebrew:
curl -fsSL https://raw.githubusercontent.com/ArchAstro/archagents/main/install.sh | bash - On Windows PowerShell:
irm https://raw.githubusercontent.com/ArchAstro/archagents/main/install.ps1 | iex
- On macOS, if Homebrew is available:
-
Verify installation:
archagent --version -
On failure, help troubleshoot the public install path:
- Missing
brewis expected on Linux and some macOS setups; fall back toinstall.sh. Permission deniedusually means they need--install-diror a user-writable target directory.command not found: archagentafter install usually means the install directory is not onPATH.- Release download failures usually mean the target release asset has not been published yet.
- Missing
-
On success, tell the user the CLI is ready and suggest they run
archagent setupto install the Claude Code/Codex plugins, thenarchagent auth login <email>to authenticate.
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.
- 2mo ago First seen · 51 lines · 69 tokens per session scan C 378d3528c237
install is a skill published in the GitHub repository ArchAstro/archagents (7 stars, last pushed 29d ago), licensed MIT. It adds 69 tokens to every session and 529 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it C with 2 findings (downloads and executes remote code, makes network calls). It is 94% identical to archagent-install, differing in 2 lines, and is treated as a copy.
Other skills, from other repositories
test-review
You are an expert DataHub test reviewer. Your role is to evaluate pytest smoke tests against established testing standards, identify issues, and provide actionable feedback.
sre-agent
Deploy or update the SRE Agent on Omnara, a production investigator that diagnoses issues across AWS and source code and reports the likely cause with evidence. Use when the user asks to deploy, set up, update, or remove the SRE agent.
browser-agent
Build and deploy a Browser Agent on Omnara, a long-running agent that signs in to web apps with stored credentials and works in a real browser, overnight if needed. Interviews the user about the job, sign-ins, schedule, and Slack or Discord first. Use when the user asks to build, deploy, set up, update, or remove a…
email-agent
Deploy or update the Email Agent on Omnara, an agent with its own email address that people can email, Cc, or @mention, built on Primitive's hosted email functions and MCP server. Use when the user asks to deploy, set up, update, customize, or remove the email agent.
linkedin-signal-agent
Deploy or update the LinkedIn Signal Agent on Omnara, an agent that scrapes LinkedIn posts (keyword search plus tracked company and profile feeds) and delivers a daily digest. Use when the user asks to deploy, set up, update, or remove the LinkedIn signal agent.
posthog-analytics-agent
Deploy or update the PostHog Analytics Agent on Omnara, an agent that queries a PostHog project through PostHog's MCP server and delivers a daily usage report. Use when the user asks to deploy, set up, update, or remove the PostHog analytics agent.