Domain Arrivals
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Featured in Domain Arrivals · 2026-08-12

Dados B3 opens the books on Brazilian market data

dadosb3.com ↗ · Developer Corner · score 84.0
○Open: public page gives enough substance to understand the site $Paid: pricing, booking, ecommerce, subscription, or paid access is visible ADAds: visible ad load or ad-supported content ✦Pretty: notable design, copy, craft, or presentation ◆Pro: polished, finished-feeling, serious, or operationally mature ◇Niche: specific audience, workflow, or unusually focused use case ◉Human: personal, local, community, civic, handmade, or real-person signal !Suspicious: scammy, spammy, trust theater, finance fog, or credibility concern

A REST API covering fundamental data for 437 Brazilian-listed companies from 2010 onward, with public formulas, point-in-time multiples, prices, and recorded restatements.

Why it surfaced

This is unusually explicit about how its numbers are made: each indicator exposes its formula, 29 invariant tests run before publication, and 7,320 restatements remain recorded rather than silently overwritten. A live WEG example works without a token, making the API auditable before anyone pays R$49.90 a month.

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Ice Does Not Count

August 12’s newborn domains include a rule-bound archive of enormous sodas, 27 family stories cut from one afternoon, a disaster-supply map with a 24-hour freshness rule, and an ocean bell that rings only when six conditions agree.

This is one of 1,000 discoveries in the 2026-08-12 Domain Arrivals issue.

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