Riddle
Working · 60 msBuild, publish and analyze quizzes, polls, forms and personality tests. Riddle account required.
17,879 servers
Build, publish and analyze quizzes, polls, forms and personality tests. Riddle account required.
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Tägliche Rangliste neuer KI-Tools mit echten Startdaten und über Stripe geprüften Umsätzen.
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Catálogo de herramientas de IA por categoría, con fechas reales e ingresos verificados.
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Create, edit and analyse short links and QR codes. OAuth sign-in works on the free plan.

Delegate 20 fail-closed RQM Studio quantum work products with fixed-request x402.
US Treasury auction tails, the live curve regime, scored macro releases, and why rates moved.
Open weekly security base rates (CC BY 4.0), plus live DMARC, takeover and WHOIS checks.

Compare prices across Latvian online retailers: offers, price history and wishlists.
Public building permits, property assessments, parcels and development intelligence.
Search and read the current MemorySync documentation while writing integration code.
Discover Frontier inference capabilities and read sanitized usage through read-only tools.
Scan/purge hidden text & score web domains: TLS, DNS, headers, speed. Free scans, $0.01 actions.
Millions of dated buying and momentum signals: who raised, who's hiring, what changed and when
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Find available sponsorship slots and create buyer-confirmed Stripe Checkouts on kannkidas.de.

Run multi-step tasks in a real Chrome browser: persistent environments, live view, human takeover.
Book a Washington notary or apostille appointment, get a quote, and track it, via AI assistant.
Reviewed competitor pricing, offer comparisons, and market-change evidence with x402 payments.
Shopping search across 100M+ products, with every retailer's offer and live price in one place.
AI agency API: free tools for glossary, comparisons, blog, guides, estimates and consulting
Search live startup jobs from Claude, Cursor, or ChatGPT via MCP. Free, no account needed.

Search source-labeled hospital prices, CPT codes, providers, and healthcare cost estimates.
Check whether an LLM model id is deprecated, retiring, or retired, and what to migrate to.