Domain Arrivals
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Featured in Domain Arrivals · 2026-08-07

Since.dev, a watchful API for changing facts

since.dev ↗ · 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 forthcoming world-state API for AI agents that watches packages, APIs, prices, policies, pages, and other registered subjects for meaningful changes.

Why it surfaced

Since.dev has a crisp premise: search tells you what exists, while this service is meant to tell agents what moved. Its homepage lays out thirteen concrete routes, resumable change feeds, typed diffs, coverage checks, signed webhooks, MCP support, and an unusually important promise: source failure is reported as degraded rather than quietly treated as “nothing changed.”

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A File Musicians Can Argue With

August 7’s newborn domains include editable orchestral scores with up to 33 staves, 15 years of Valencia council interventions, a dementia-friendly frame with one optional button, and a memorial golf tournament whose winner wears the Meatball Jacket.

This is one of 1,000 discoveries in the 2026-08-07 Domain Arrivals issue.

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