axiom

axiom is a skill for Claude Code from axiom-browser-automation/claude-skill. It costs 199 tokens per session (9,822 once invoked), scanned B, original, ISC.

A skill for building Axiom browser automations, called axioms, as either no-code templates or Node.js scripts. These automations can scrape sites, click controls, fill forms, and download files.

In plain words
What is it for?
Use it to create, run, preview, or hand off Axiom automations.
Why use it?
It turns a browser task into a repeatable automation instead of requiring the steps to be done by hand.

Skill for Claude Code

Written for Claude Code: Claude Code plugin machinery. Also seen: reads .claude/ paths; mentions Claude Code.

Part of the axiom plugin — 1 skill shipped together

Good fit Use it to create, run, preview, or hand off Axiom automations.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/axiom-browser-automation/claude-skill/axiom
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 axiom-browser-automation/claude-skill --skill axiom
Clone the repo
git clone --depth 1 https://github.com/axiom-browser-automation/claude-skill

Made for: Claude Code.

Or install axiom, the plugin that ships this one along with the rest of its 1 skill.

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 axiom

README.md
[![agentmods](https://agentmods.dev/badge/skills/axiom-browser-automation/claude-skill/axiom/github.svg)](https://agentmods.dev/skills/axiom-browser-automation/claude-skill/axiom)
Your own site
<a href="https://agentmods.dev/skills/axiom-browser-automation/claude-skill/axiom"><img src="https://agentmods.dev/badge/skills/axiom-browser-automation/claude-skill/axiom/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 axiom

Your own site · 80×15
<a href="https://agentmods.dev/skills/axiom-browser-automation/claude-skill/axiom"><img src="https://agentmods.dev/badge/skills/axiom-browser-automation/claude-skill/axiom.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 199 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 9,822 The whole file, excluding the scripts and references it only reads on demand.
Security scan B 1 finding. A grade says what 26 rules found in the file — not that it is safe.
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 $0.00199 $0.09822
Opus 5.5 $0.00080 $0.03929
Sonnet 5.5 $0.00040 $0.01964
Haiku 4.5 $0.00020 $0.00982

Measured 1mo ago against content hash 846f06e236bf, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade B, and why

axiom scanned grade B with 1 finding 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.

The scan reads SKILL.md. This mod also ships 3 executable files (examples/coded/login-then-extract.js, examples/coded/parallel-sessions.js, examples/coded/simple-scrape.js), 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.

Reads agent configuration directoriesmediumAgent snooping

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

Take the key. Write it to `~/.claude/settings.json`'s `env` block under `AXIOM_API_KEY`. Tell the user to restart Claude Code for it to pick up. **Don't store the key anywhere else** — settings.json is the canonical loca
plugins/axiom/skills/axiom/SKILL.md · 501 lines

How it starts

The opening of the file, as written. The whole thing — 501 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Axiom builder skill

You build axioms in two formats, chosen at runtime based on the user's intent:

  • No-code axiom (JSON) — an AutomationTemplate saved to the user's Axiom account, runs in the dashboard, schedulable.
  • Coded axiom (@axiom_ai/api JavaScript) — a Node script the user runs from their own code.

You can also run a saved axiom (trigger it, poll for results), hand one off to the Chrome extension for local preview/edit, and set up the Axiom desktop app's MCP server — the runtime upgrade described in Step 0.5. These six capabilities are encoded as workflows in workflows/ — see references/workflows-index.md for the full registry.

Before you produce anything, decide which workflow fits. If the user's intent is ambiguous, ask one clarifying question.

Step −1 — Check for a newer skill version (once per conversation)

The first time the axiom skill activates in a conversation, run the update check via the skill's bundled script. Use the absolute path — the skill's base directory was announced when this skill loaded ("Base directory for this skill: "). The bash tool's CWD won't always match the skill directory, so a relative path will fail.

node "<SKILL_BASE_DIR>/scripts/check-for-updates.js"

Replace <SKILL_BASE_DIR> with the absolute path you were given at skill activation.

If it prints a line starting with UPDATE_AVAILABLE, surface a one-line note to the user before continuing with their request:

Heads up: skill v<latest> is available (you're on v<current>). Run /plugin marketplace update axiom-skills then /reload-plugins to upgrade. I'll continue with your current request — let me know if you'd rather upgrade first.

If the script prints nothing, proceed silently.

Don't re-run the check in the same conversation. Track that you've already done it in your conversation memory; users will get annoyed by repeated "heads up" messages. The script never errors out (it always exits 0); if the upstream probe failed for any reason — no gh, no network, repo not reachable — the script stays silent and you proceed.

Read the full file on GitHub · 501 lines

Files

What ships with it

60 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. 1mo ago Changed · +94 lines · +53 tokens per session 846f06e236bf
  2. 2mo ago First seen · 407 lines · 146 tokens per session scan B c8ebf8cf04b3

Subscribe to this mod's changes

axiom is a skill published in the GitHub repository axiom-browser-automation/claude-skill (4 stars, last pushed 9d ago), licensed ISC. It adds 199 tokens to every session and 9,822 once invoked, about $0.0008 per session on Opus 5.5. A static security scan graded it B with 1 finding (reads agent configuration directories). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Related

axiom compared with skills from other repositories

axiom next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
axiomaxiom-browser-automation/claude-skillSkill49d agoISCB199Claude Code
interactive-loginyc-software/qmSkill16kyesterdayMITA46Claude Code, Codex
pinchtab-mcppinchtab/pinchtabSkill11k10d agoMITA52Claude Code, Codex
azure-messaging-webpubsub-javamicrosoft/skillsSkill3.2kyesterdayMITA43Claude Code
cua-driverdavidondrej/skillsSkill4.3k3d agoMITA68Claude Code, Codex
open-design-browsercompozy/compozySkill2.8kyesterdayMITA56Claude Code, Codex
southwestborski/travel-hacking-toolkitSkill895yesterdayMITA40Claude Code