OpenClaw
Deploy a managed OpenClaw agent in 60 seconds
Launch on Hostinger →
Hermes Agent
Run your Hermes agent, fully managed
Launch on Hostinger →
Apify
6,000+ web scrapers for your agent, free to start
Try Apify free →
Firecrawl
Crawl and scrape any site into clean data
Try Firecrawl free →
Context.dev
One API to scrape, enrich, and extract the web
Start building free →
SetupClaw
Done-for-you OpenClaw for founders and teams
Get it set up for you →
DataForSEO
SEO data APIs for your agent, $1 free credit
Try DataForSEO free →
Your product here
Reach thousands of AI builders a month
Learn more →
Claude Market
Menu
SkillsMCPPluginsSubmit MCPSkillPluginMCPMCP, plugin, or skillAdvertise
Claude Market
SkillsMCPPluginsSubmit MCPSkillPluginMCPMCP, plugin, or skillAdvertise
Skills/juliusbrussee/cavekit/caveman
caveman logo

caveman

juliusbrussee/cavekit
2K installs1K stars
Run it on Hostinger, 20% off →Your friend gets 20% off too, using this linkFree API →|View on GitHub|Create your own skill →

Installation

npx skills add https://github.com/juliusbrussee/cavekit --skill caveman

Summary

|

SKILL.md

caveman — spec encoding

Applies to SPEC.md writes, spec-referencing prose, backprop entries. Does NOT apply to code, error strings, commit messages, PR descriptions.

GRAMMAR

  • Drop articles (a, an, the).
  • Drop filler (just, really, basically, simply, actually).
  • Drop aux verbs where fragment works (is, are, was, were, being).
  • Drop pleasantries.
  • No hedging (skip "might", "perhaps", "could be worth").
  • Fragments fine.
  • Short synonyms: fix > implement, big > extensive, run > execute.

SYMBOLS

Prefer over words:

→   leads to / becomes / on <x>
∴   therefore / fix
∀   for all / every
∃   exists / some
!   must / required
?   may / optional / unknown
⊥   never / forbidden / nil
≠   not equal
∈   in
∉   not in
≤   at most
≥   at least
&   and
|   or
§   section reference

PRESERVE VERBATIM

Never compress:

  • Code blocks, snippets, one-liners with backticks.
  • Paths: src/auth/mw.go.
  • URLs.
  • Identifiers: function names, variable names, env vars.
  • Numbers and versions.
  • Error message strings.
  • SQL, regex, JSON, YAML.
  • Quoted strings.

SHAPES

Invariant:

V<n>: <subject> <relation> <condition>
V1: ∀ req → auth check before handler
V2: token expiry ≤ current_time → reject

Bug row (pipe table under §B):

id|date|cause|fix
B1|2026-04-20|token `<` not `≤`|V2

Task row (pipe table under §T):

id|status|task|cites
T3|x|add auth mw|V1,I.api

Status: x done, ~ wip, . todo. Escape literal | as \|.

Interface:

<kind>: <name> → <shape>
api: POST /x → 200 {id:string}
cmd: `foo bar <arg>` → stdout JSON
env: FOO_KEY ! set

EXAMPLES

Bad:

The system should ensure that every incoming request is properly authenticated before being forwarded to its corresponding handler function.

Good:

V1: ∀ req → auth check before handler

Bad:

We discovered that the token expiration check in the middleware was using a strict less-than comparison operator, which meant tokens were being rejected at the exact moment of their expiry.

Good:

B1: token < not ≤ → reject @ expiry boundary.

Bad:

The POST endpoint at /x accepts a JSON body and returns a 200 response with an object containing the created id.

Good:

api: POST /x → 200 {id}

BOUNDARIES

  • User asks for prose explanation → switch to normal English.
  • Spec documents for external review (RFC, pitch) → normal English.
  • Commit message → normal English (git readers expect it).
  • Diff comment in code → normal English.

WHEN UNSURE

If cutting a word loses a fact, keep it. Caveman is compression, not amputation.

Score

0–100
57/ 100

Grade

C

Popularity17/30

1,867 installs — growing adoption. Source repo has 1,021 GitHub stars.

Completeness19/30

Documented: full SKILL.md body, one-line install. Missing: description, category/license metadata.

Trust15/25

Community skill with a public GitHub source repository you can review.

Freshness6/15

No update timestamp is tracked for this skill in our catalog.

Scored automatically from popularity, completeness, trust, and freshness — computed only from data in our catalog, never fabricated.

Proud of your score? Add this badge to your README.

Paste a snippet into your GitHub README. The badge updates automatically and links back to this page.

Caveman skill score badge previewScore badge

Markdown

[![Caveman skill](https://www.claudemarket.ai/skills/juliusbrussee/cavekit/caveman/badges/score.svg)](https://www.claudemarket.ai/skills/juliusbrussee/cavekit/caveman)

HTML

<a href="https://www.claudemarket.ai/skills/juliusbrussee/cavekit/caveman"><img src="https://www.claudemarket.ai/skills/juliusbrussee/cavekit/caveman/badges/score.svg" alt="Caveman skill"/></a>

Caveman FAQ

How do I install the Caveman skill?

Run “npx skills add https://github.com/juliusbrussee/cavekit --skill caveman” in your terminal. The skill is added to your agent's skills directory and picked up automatically on the next run — no restart or extra configuration needed.

What does the Caveman skill do?

| The full SKILL.md on this page shows the exact instructions the skill gives your agent.

Is the Caveman skill free?

Yes. Caveman is a free, open-source skill published from juliusbrussee/cavekit. As with any third-party skill, review the source repository before installing it into an agent with sensitive access.

Does Caveman work with Claude Code and OpenClaw?

Yes. Skills use the portable SKILL.md format, so Caveman works with Claude Code, OpenClaw, Codex, Hermes, and any other agent that reads SKILL.md skills.

Recommended skills

Browse all →
caveman logo

caveman

juliusbrussee/caveman

413K installsInstall
caveman-commit logo

caveman-commit

juliusbrussee/caveman

289K installsInstall
caveman-review logo

caveman-review

juliusbrussee/caveman

287K installsInstall
caveman-compress logo

caveman-compress

juliusbrussee/caveman

285K installsInstall
caveman-help logo

caveman-help

juliusbrussee/caveman

279K installsInstall
caveman-stats logo

caveman-stats

juliusbrussee/caveman

237K installsInstall

Related guides

Hand-picked reading to help you choose, install, and use agent skills.

GuideBest Openclaw Skills 2026GuideHow To Evaluate Openclaw Skill Before InstallingGuideOpenclaw Skills Complete Guide

Skills by category

FrontendBackend & APIsTesting & QASecurityDevOps & CI/CDMCP & ToolingAutomationData & Analysis+20 more

MCP servers by category

AI & MLDeveloper ToolsVector & MemoryFiles & DocsDatabasesFinance & PaymentsBrowser & ScrapingCommunication+8 more

Plugins by category

developmentproductivitycommunicationdesignsecuritydatabaseworkflowcompliance+34 more

The Agent Stack

Weekly Claude Code, Agent SDK, and MCP moves worth your time — free.

Claude Market

AI agent skills directory, marketplace, and workflow hub for OpenClaw, Hermes Agent, Claude Code, Codex, and MCP-powered operator stacks.

Independent project, not affiliated with Anthropic.

Resources

  • Browse Skills
  • Browse MCP Servers
  • Browse Plugins

More

  • Submit a Tool
  • Create a Skill
  • Advertise
  • Free Tools
  • API
  • Shipping
  • Contact
  • Terms
  • Privacy
© 2026 Claude Market · Not affiliated with Anthropic
Fazier badgeFeatured on Twelve ToolsFeatured on Wired BusinessRemote OpenClaw - Featured on AI Agents DirectoryListed on Turbo0Featured on Uneed