AI tool comparison
Caveman vs MDV
Which one should you ship with? Here is the side-by-side panel verdict, pricing read, reviewer split, and community vote comparison.
Developer Tools
Caveman
Claude Code skill that cuts ~75% of tokens by making Claude talk like a caveman
50%
Panel ship
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Community
Free
Entry
Caveman is a one-line installable Claude Code skill by Julius Brussee that instructs Claude to respond in ultra-compressed telegraphic language — short imperative verbs, no filler words, minimal articles — while preserving technical accuracy. The conceit is absurd: make Claude sound like a caveman. The result is practical: roughly 75% fewer output tokens per response. This matters because Claude's usage limits are token-based. Power users and teams hitting rate limits on Claude Code subscriptions have found that caveman-style output dramatically extends how many interactions they can run per session. The Hacker News thread hit 333 points the day it launched, with developers sharing variations and reporting measurable drops in token consumption for coding workflows. The project also spawned a fork (Caveman-Claude by om-patel5) that packages it as a higher-performance optimization layer with additional context-compression techniques. What started as a joke about caveman grammar is becoming a serious prompt-engineering pattern for token efficiency.
Developer Tools
MDV
Markdown that embeds live data, charts, and slides — docs that stay current
75%
Panel ship
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Community
Free
Entry
MDV (Markdown Data Views) is a markdown superset that extends standard .md files with embedded live data, interactive charts, and presentation-ready slides. The goal is a single document format that serves simultaneously as developer documentation, a live dashboard, and a shareable slide deck — without requiring a separate tool for each use case. MDV files can embed SQL queries, API calls, and data transforms directly in markdown, with results rendering as tables, charts, or visualizations on the fly. The syntax extends frontmatter conventions that markdown users already know, keeping the learning curve minimal. Output can be previewed in a local server, exported as HTML, or converted to a slide deck — the same source file serves all three outputs. MDV surfaced on Hacker News with 44 points and active discussion around the concept of "living documents" — reports and runbooks that stay current because their data sources are live queries rather than screenshots. For developer-heavy teams who live in their editors and resist adopting heavyweight BI tools, MDV offers a markdown-native alternative that slots into existing documentation workflows.
Reviewer scorecard
“I tested this against my normal Claude Code sessions and the token reduction is real — closer to 60-70% in practice, but that's still significant. For long refactoring sessions where I'm hitting usage walls, this is now a permanent part of my setup. One-line install is the right distribution model.”
“I've been writing separate README, dashboard, and slide deck for the same data for years. MDV collapsing those into one source-of-truth file is the kind of DRY solution I didn't know I needed. The frontmatter-extension approach means it works in existing markdown tooling. Shipping for internal docs immediately.”
“This is a workaround for Anthropic's pricing model, not a solution. The caveman syntax makes outputs harder to read and copy-paste — you'll spend cognitive overhead parsing the response. And if Anthropic changes how usage limits work, this approach becomes irrelevant overnight. It's a clever hack, not a durable tool.”
“Embedding live SQL queries in documentation is a security and maintainability footgun. Who reviews the data access in a markdown file? The concept is compelling but the execution needs a clear story for access control, query sandboxing, and handling stale or broken data connections in production docs.”
“This is a data point in the larger story about prompt efficiency becoming a discipline. As token costs dominate AI budgets, compressing output without losing semantics will be a genuine engineering skill. Caveman is silly — but the underlying insight about output verbosity being a lever is serious.”
“The next evolution of documentation is documents that are executable — that don't just describe the system but are the system. MDV is an early step toward that: markdown that isn't just readable by humans but queryable, renderable, and automatable by agents. Worth watching closely.”
“For any creative workflow — writing, design iteration, content generation — caveman output is actively counterproductive. The compressed style strips the nuance and polish from responses that make AI useful for creative work. This is a developer tool with a very specific use case.”
“Being able to write a client report in markdown that automatically pulls live data and renders as a slide deck is genuinely transformative for independent consultants and content creators. MDV could replace Notion, Google Slides, and a BI tool for a substantial percentage of small team workflows.”
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