Observed arrival · 2026-09-29
Markdown tables that can check their own arithmetic
VisiMark is a CLI-based integrity layer that attaches formulas to numbers in Markdown documents and checks whether the displayed values still match.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Teams maintaining formula-backed numbers in Markdown
- Worth noticing
- The CLI can infer column rules from existing tables, then make mismatches fail CI with a non-zero exit.
Field notes
The demonstrated workflow separates editing from verification: formulas can be added directly or inferred from an existing table, then formatting recomputes owned values. Featured articles frame further applications such as generating a CI sharding matrix and checking a spending cap outside an autonomous agent; these are presented as examples, not independently verified capabilities.
Observed signals
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Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
$PaidCommerce or pricing visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
ƒJavaScriptBrowser-side code central
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