caveman-evidence-review

caveman-evidence-review is a skill for Claude Code, Codex from mrDesign-ww/vault-os. It costs 87 tokens per session (951 once invoked), scanned A, a copy of caveman-evidence-review, MIT.

A read-only review skill for Caveman Cloud data about AI costs, quality, timing, errors, routing, and experiment results. It uses current project evidence and keeps measured costs, estimates, and verified savings separate.

In plain words
What is it for?
It helps investigate where AI spending goes, why cost or quality changed, which workflows need attention, and what traces or time periods support the finding.
Why use it?
It helps prevent unsupported conclusions from aggregate metrics or from confusing an estimate with a confirmed saving.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit It helps investigate where AI spending goes, why cost or quality changed, which workflows need attention, and what traces or time periods support the finding.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/mrdesign-ww/vault-os/caveman-evidence-review
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 mrDesign-ww/vault-os --skill caveman-evidence-review
Clone the repo
git clone --depth 1 https://github.com/mrDesign-ww/vault-os

Made for: Claude Code, Codex.

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 caveman-evidence-review

README.md
[![agentmods](https://agentmods.dev/badge/skills/mrdesign-ww/vault-os/caveman-evidence-review/github.svg)](https://agentmods.dev/skills/mrdesign-ww/vault-os/caveman-evidence-review)
Your own site
<a href="https://agentmods.dev/skills/mrdesign-ww/vault-os/caveman-evidence-review"><img src="https://agentmods.dev/badge/skills/mrdesign-ww/vault-os/caveman-evidence-review/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 caveman-evidence-review

Your own site · 80×15
<a href="https://agentmods.dev/skills/mrdesign-ww/vault-os/caveman-evidence-review"><img src="https://agentmods.dev/badge/skills/mrdesign-ww/vault-os/caveman-evidence-review.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 87 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 951 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 88% copy Near-identical to another mod 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 $0.00087 $0.00951
Opus 5.5 $0.00035 $0.00380
Sonnet 5.5 $0.00017 $0.00190
Haiku 4.5 $0.00009 $0.00095

Measured 1mo ago against content hash 239bb91fdac9, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

caveman-evidence-review 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.

Origin

This is a copy

88% identical to caveman-evidence-review — 8 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

shell/codex/skills/caveman-evidence-review/SKILL.md · 145 lines

How it starts

The opening of the file, as written. The whole thing — 145 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Review Caveman evidence

Act as a read-only operator. Build conclusions from current Caveman data, not from repository guesses. Never start, approve, cancel, or roll back an experiment from this skill.

Hard rules

  1. Keep these buckets separate:
    • measured provider-complete list-price cost;
    • inferred daily headroom;
    • verified ledger savings;
    • evidence cost. Never add or relabel them.
  2. Do not fetch prompt, completion, tool, or artifact payloads unless the user explicitly asks for payload review. Metadata, spans, timing, models, token counts, status, and optimizer attribution are enough for the default review.
  3. Scope every read to the project selected by Caveman context. Never supply an organization id.
  4. Empty results are evidence of no current signal, not zero cost or zero risk.
  5. Cite trace ids and exact time windows used. Do not claim a cause from an aggregate alone.

Step 1 — Load context

Prefer MCP:

caveman_context {}

CLI fallback:

caveman cloud whoami
caveman cloud projects list

Stop if login or project selection is missing. Ask the user to run caveman login or select a project; never guess.

Step 2 — Establish baseline

Use caveman_report for:

  • overview
  • costs
  • score
  • workflows
  • verified_savings

Then use caveman_plan for ranked daily headroom. If question is narrow, skip unrelated reports. Read shortest set that can answer it.

CLI fallback:

caveman cloud costs
caveman cloud score
caveman cloud plan --json

State report window and basis before interpreting direction.

Step 3 — Test the leading explanation with traces

Use caveman_trace_search. Choose a bounded window and closed filters: workflow, agent, model, provider, error code, runtime mode, cache status, optimization id, status class, token/cost/latency bounds, compression, or monitor verdict.

Useful groupings:

  • workflow — find jobs driving cost or failures;
  • model — compare model mix;
  • session — isolate retry or loop behavior;
  • ungrouped — identify exact traces.

Read the full file on GitHub · 145 lines

Files

What ships with it

1 file 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 First seen · 145 lines · 87 tokens per session scan A 239bb91fdac9

Subscribe to this mod's changes

caveman-evidence-review is a skill published in the GitHub repository mrDesign-ww/vault-os (2 stars, last pushed 6d ago), licensed MIT. It adds 87 tokens to every session and 951 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 88% identical to caveman-evidence-review, differing in 8 lines, and is treated as a copy.

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