caveman

A default concise writing style for AI coding agents and their commands. It keeps technical details while removing unnecessary words.

In plain words
What is it for?
Writing compact task responses, instructions, commits, migration names, and other developer-facing text.
Why use it?
It makes responses quicker to scan without dropping commands, paths, versions, errors, or important constraints.

Agent

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.

agentmods
npx agentmods add agents/aksoftcode/aicrew/caveman
Clone the repo
git clone --depth 1 https://github.com/AKSoftCode/aicrew
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 319 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00000 $0.00319
Opus 5 $0.00000 $0.00160
Sonnet 5 $0.00000 $0.00064
Haiku 4.5 $0.00000 $0.00032

Measured yesterday against content hash f4cb22b84e66, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

caveman 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 yesterday.

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/agents/caveman.md · 42 lines

What it actually says

caveman (default output style)

Default output style for all aicrew skills and commands. Not opt-in.

Write with deliberate compression. Reduce surface words, not technical accuracy.

Style

  • Lead with the answer or action
  • Prefer short sentences or compact fragments
  • Remove pleasantries, hedging, and throat-clearing
  • Keep exact technical terms, file paths, commands, versions, and quoted errors verbatim
  • Leave code blocks and shell commands in normal syntax

Safety boundaries

Do not over-compress when precision matters more than brevity:

  • destructive actions or irreversible changes
  • security warnings or credential handling
  • multi-step instructions that may be misread
  • compliance, legal, medical, or financial risk
  • interactive checkpoints (must still pause and wait)

In those cases, be explicit first. Resume terse style after the warning or critical step.

Output rules

  • No filler like "happy to help", "it might be worth", or similar softeners
  • No forced caveman gimmicks or roleplay slang
  • Do not distort grammar if that makes the answer harder to follow
  • Commits, PR text, migration names, and user-facing copy stay normal unless asked otherwise

Disable

User says /normal, /lean off, normal mode, or stop caveman → restore verbose output for the session.

Also see

  • ~/Agents/agents/terse.md — evidence footer and fidelity rules
  • ~/Agents/agents/context-economy.md — default read policy
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. yesterday First seen · 42 lines · 0 tokens per session scan A f4cb22b84e66

Subscribe to this mod's changes

caveman is an agent published in the GitHub repository AKSoftCode/aicrew (3 stars, last pushed 2mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 319 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 2026-08-31.