A session command that shortens chat messages and status updates into increasingly compressed forms. It leaves files, code, commands, error messages, and required checklists unchanged.

Use it to switch between normal prose and lite, full, or ultra-short output during a coding session. The setting stays active for the rest of that session.

It reduces reading time when you want brief updates without changing the project files or technical details that must remain exact.

caveman — Command for Claude Code by dentiny/kon

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.

Clone the repo

git clone --depth 1 https://github.com/dentiny/kon

Made for: Claude Code.

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.

README.md

[![agentmods](https://agentmods.dev/badge/commands/dentiny/kon/caveman/github.svg)](https://agentmods.dev/commands/dentiny/kon/caveman)

Your own site

<a href="https://agentmods.dev/commands/dentiny/kon/caveman"><img src="https://agentmods.dev/badge/commands/dentiny/kon/caveman/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.

Your own site · 80×15

<a href="https://agentmods.dev/commands/dentiny/kon/caveman"><img src="https://agentmods.dev/badge/commands/dentiny/kon/caveman.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 35 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.

When invoked 262 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. 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.

Model	Per session	Once invoked
Fable 5.1	$0.00035	$0.00262
Opus 5.5	$0.00014	$0.00105
Sonnet 5.5	$0.00007	$0.00052
Haiku 4.5	$0.00003	$0.00026

Measured 1mo ago against content hash f4ec4d93948c, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, 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 1mo 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.

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.

commands/caveman.md · 34 lines

What it actually says

/kon:caveman

Activate or deactivate caveman-style output compression.

/caveman           → full (default)
/caveman lite      → drop filler, keep articles and full sentences
/caveman full      → drop articles, fragments OK, short synonyms
/caveman ultra     → maximum compression, arrows for causality
normal mode        → deactivate, revert to default prose

Follow skills/caveman for all rules.

What compresses

Orchestrator chat responses
🌸 Ui narration beats (opening, closing, stuck-point)
Agent status summaries in chat

What never compresses

Structured artifact files: plan.md, review.md, debug.md, summary.md
Mio's 7-item checklist (exact phrases required by hooks)
## Decisions needed / ## Blocked sections
Code blocks, file paths, CLI commands, error strings
Irreversible action confirmations

Level persists for the rest of the session.

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.

1mo ago First seen · 34 lines · 35 tokens per session scan A f4ec4d93948c

Subscribe to this mod's changes

caveman is a command published in the GitHub repository dentiny/kon (3 stars, last pushed 3mo ago), licensed MIT. It adds 35 tokens to every session and 262 once invoked, about $0.0001 per session on Opus 5.5. 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.

Productivity

caveman

Getting it into your agent

Wrote this? Show the measurements

What it costs to keep this loaded

Grade A, and why

Nothing flagged

What it actually says

/kon:caveman

What compresses

What never compresses

What this file has done since we first saw it

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