Causari vs Purple Hammer

The first content-addressable ledger for AI agents. Every prompt, model, read, write and reasoning becomes an immutable causal event, captured at the wire, no agent...

PDF takeoff for construction estimators and QS teams, mark up drawings, measure quantities, compare revisions, and price the job in live spreadsheets. Mac and Windows.

About Causari

The first content-addressable ledger for AI agents. Every prompt, model, read, write and reasoning becomes an immutable causal event, captured at the wire, no agent cooperation required. Trace, bisect, revert and explain every line your agents wrote. re audit reads plain git history, detects AI-authored commits from verifiable metadata ( Co-Authored-By trailers, bot authors, aider markers) and measures how many of those lines are still alive at HEAD. Every number carries its evidence class: VERIFIED (explicit metadata) is never mixed with PROBABLE (heuristic).

About Purple Hammer

PDF takeoff for construction estimators and QS teams, mark up drawings, measure quantities, compare revisions, and price the job in live spreadsheets. Mac and Windows. The Bluebeam → Excel → Bluebeam → Excel dance is over. Both sets are aligned and scaled, so last revision's takeoff carries forward. Everything you'd use in Excel, plus estimating-native Power Syntax.