Prompt Caching
sickn33/agentic-awesome-skills
Caching strategies for LLM prompts including Anthropic prompt caching, response caching, and CAG (Cache Augmented Generation)
Show recorded output and cache-read token usage and mode attribution for the current Claude Code session, or locate the host's native usage report.
Apache-2.0Auto-check passed
Install Caveman Stats
$ npx skills add JuliusBrussee/caveman --skill caveman-stats -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install JuliusBrussee/caveman caveman-stats --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/JuliusBrussee/caveman.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/caveman-stats .claude/skills/caveman-stats && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "caveman-stats" agent skill from https://github.com/JuliusBrussee/caveman/tree/main/skills/caveman-stats into .claude/skills/caveman-stats/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "caveman-stats", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/JuliusBrussee/caveman/tree/main/skills/caveman-statsType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add JuliusBrussee/caveman --skill caveman-stats -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install JuliusBrussee/caveman caveman-stats --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/JuliusBrussee/caveman.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/caveman-stats .agents/skills/caveman-stats && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "caveman-stats" agent skill from https://github.com/JuliusBrussee/caveman/tree/main/skills/caveman-stats into .agents/skills/caveman-stats/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "caveman-stats", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add JuliusBrussee/caveman --skill caveman-stats -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install JuliusBrussee/caveman caveman-stats --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/JuliusBrussee/caveman.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/caveman-stats .cursor/skills/caveman-stats && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "caveman-stats" agent skill from https://github.com/JuliusBrussee/caveman/tree/main/skills/caveman-stats into .cursor/skills/caveman-stats/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "caveman-stats", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/JuliusBrussee/caveman.git --path skills/caveman-stats--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add JuliusBrussee/caveman --skill caveman-stats -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install JuliusBrussee/caveman caveman-stats --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/JuliusBrussee/caveman.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/caveman-stats .gemini/skills/caveman-stats && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "caveman-stats" agent skill from https://github.com/JuliusBrussee/caveman/tree/main/skills/caveman-stats into .gemini/skills/caveman-stats/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "caveman-stats", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install JuliusBrussee/caveman caveman-statsInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add JuliusBrussee/caveman --skill caveman-stats -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/JuliusBrussee/caveman.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/caveman-stats .github/skills/caveman-stats && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "caveman-stats" agent skill from https://github.com/JuliusBrussee/caveman/tree/main/skills/caveman-stats into .github/skills/caveman-stats/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "caveman-stats", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add JuliusBrussee/caveman --skill caveman-stats -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install JuliusBrussee/caveman caveman-stats --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/JuliusBrussee/caveman.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/caveman-stats .opencode/skills/caveman-stats && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "caveman-stats" agent skill from https://github.com/JuliusBrussee/caveman/tree/main/skills/caveman-stats into .opencode/skills/caveman-stats/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "caveman-stats", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
caveman-stats- GitHub stars
- 111k
- Token cost
- ~491 tokens
- SKILL.md length
- 250 words
- Files
- 2
- Skills in repo
- 18
- Repo updated
- First seen
- Licence
- Apache-2.0
At a glance
Show recorded output and cache-read token usage and mode attribution for the current Claude Code session, or locate the host's native usage report.
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Caveman Stats is an agent skill from JuliusBrussee/caveman. Show recorded output and cache-read token usage and mode attribution for the current Claude Code session, or locate the host's native usage report. Trigger: /caveman-stats.
Its SKILL.md is about 490 tokens, which your agent loads only when the skill is triggered. The skill folder holds 1 other file (for example `README.md`).
The repository describes itself as: 🪨 why use many token when few token do trick. Viral skill + proxy for coding agents that cuts 65% of tokens by talking like a caveman. The licence is Apache-2.0.
Example prompts
- “/caveman-stats”
What it can do on your machine
Read from SKILL.md and the folder at commit 2e08b91. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Caveman Stats loads about 491 tokens when it runs. Until then it costs about 47 tokens; SKILL.md has 250 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from JuliusBrussee/caveman at commit 2e08b91, republished under its Apache-2.0 licence (© JuliusBrussee). 250 words, ~491 tokens.
Download SKILL.mdSave it as
.claude/skills/caveman-stats/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.- name
- caveman-stats
- description
- Show recorded output and cache-read token usage and mode attribution for the current Claude Code session, or locate the host's native usage report. Trigger: /caveman-stats.
In Claude Code, src/hooks/caveman-mode-tracker.js resolves src/hooks/caveman-stats.js next to itself and runs it on /caveman-stats. The hook does not block the prompt: it supplies the report through hookSpecificOutput.additionalContext with an instruction to print it verbatim inside a fenced code block. Do exactly that, and do not calculate, recompute or re-round the numbers yourself.
In Gemini CLI, direct the user to /stats model for current session token usage or /stats session for session statistics. Gemini custom commands are prompts; they cannot invoke the built-in command or read its live session metrics. Never read Claude Code transcripts as Gemini usage. In other hosts, use a native usage report if one is available; otherwise say that current session usage is unavailable. The Claude reader and its lifetime history apply only to Claude Code. Savings remain unknown in every host without a measured comparison.
The report shows recorded output and cache-read tokens, response counts, and mode attribution where available. Savings are unknown: the transcript has no measured comparison without Caveman. Do not infer saved tokens, percentages, dollars, rule overhead, or a net result from output counts or the current mode.
--all and --since 7d aggregate the latest recorded output count per session. --share reports observed usage with savings unknown. Historical est_saved_* fields are ignored; their original history rows remain on disk. The statusline shows the active mode without the retired savings badge.
Original/current memory-file pairs are reported by their measured byte sizes. Those file-size differences do not establish provider token or billing savings. See docs/HONEST-NUMBERS.md.
© JuliusBrussee, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 1 other file in skills/caveman-stats of JuliusBrussee/caveman.
- SKILL.md
- README.md
Open the folder on GitHubat commit 2e08b91
Compare with similar skills
Caveman Stats next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Caveman Stats this skillJuliusBrussee/caveman | 111k | — | ~491 | Automated safety check: Pass | Apache-2.0 | |
| Prompt Cachingsickn33/agentic-awesome-skills | 47k | 2 repos | ~3.4k | Automated safety check: Pass | MIT | |
| Prompt Cachingdavila7/claude-code-templates | 33k | 5 repos | ~452 | Automated safety check: Pass | MIT | |
| Turborepo Cachingwshobson/agents | 40k | 9 repos | ~2k | Automated safety check: Notes | MIT | |
| OmniRoute LLM Cachediegosouzapw/OmniRoute | 75k | — | ~529 | Automated safety check: Pass | MIT | |
| Cachingzebbern/claude-code-guide | 4.7k | — | ~1.5k | Automated safety check: Pass | MIT |
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More from JuliusBrussee/caveman
All 18 skills in this repoCaveman Workflow Labeler
JuliusBrussee/caveman
Finds every LLM workflow in a repository, proposes a labeling table and, once you agree, wires labels so Caveman Cloud groups spend per workflow.
Caveman Evidence Review
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Read-only review of Caveman Cloud data to explain where LLM spend goes: cost, score, workflows, traces, latency, errors, routing and verified savings.
Caveman Experiment Manager
JuliusBrussee/caveman
Reads the state and results of Caveman Cloud experiments and reports one recommendation or a block, without changing an experiment's lifecycle itself.
Caveman Optimization Evaluator
JuliusBrussee/caveman
Turns a Caveman report-only optimization observation into one minimal code change and a paired baseline evaluation, after the operator picks which to pursue.
Caveman Gateway Setup
JuliusBrussee/caveman
Routes every LLM call in a repository through the Caveman Cloud gateway in record mode, so requests and costs are measured without changing behavior.
Caveman Help Card
JuliusBrussee/caveman
Quick-reference card for the three caveman skills and their commands. Trigger: /caveman-help or "caveman help".
Questions about Caveman Stats
What does Caveman Stats do?
Show recorded output and cache-read token usage and mode attribution for the current Claude Code session, or locate the host's native usage report. Caveman Stats is an agent skill from JuliusBrussee/caveman. Show recorded output and cache-read token usage and mode attribution for the current Claude Code session, or locate the host's native usage report.
How do I install Caveman Stats in Claude Code?
Run `npx skills add JuliusBrussee/caveman --skill caveman-stats -a claude-code`. Or copy the skill folder (skills/caveman-stats in JuliusBrussee/caveman) into .claude/skills/caveman-stats in your project. Claude Code loads it when a task matches its description.
How do I install Caveman Stats in Codex?
Run `npx skills add JuliusBrussee/caveman --skill caveman-stats -a codex`. Or copy the skill folder (skills/caveman-stats in JuliusBrussee/caveman) into .agents/skills/caveman-stats in your project. Codex loads it when a task matches its description.
Can I use Caveman Stats in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add JuliusBrussee/caveman --skill caveman-stats -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/caveman-stats, .gemini/skills/caveman-stats, .github/skills/caveman-stats and .opencode/skills/caveman-stats in your project.
What does Caveman Stats need to run?
SKILL.md names no scripts, command-line tools or credentials: Caveman Stats is instructions for the agent only.
Does Caveman Stats access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Caveman Stats safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Caveman Stats use?
Caveman Stats is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Caveman Stats use?
About 491 tokens (SKILL.md is roughly 2k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Caveman Stats?
Skills that share tags, products or a category with Caveman Stats: Prompt Caching (sickn33/agentic-awesome-skills, 47k stars), Prompt Caching (davila7/claude-code-templates, 33k stars), Turborepo Caching (wshobson/agents, 40k stars) and OmniRoute LLM Cache (diegosouzapw/OmniRoute, 75k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Caveman Stats?
JuliusBrussee (a GitHub user) maintains it in JuliusBrussee/caveman, which has 110,815 GitHub stars. The repository holds 18 skills in this directory. The repository was last updated on October 9, 2026.
Source: JuliusBrussee/caveman on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.