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1 agent-payable API across ai. Every listing carries a tested call recipe - endpoint, auth shape, pricing, and known gotchas - on its detail page. herokuapp.com ↗

API	Category	Price / call	Uptime 30d	Status	Docs
Market Side Volumes API Polymarket Market Side Volumes — an agent-callable polymarket market side volumes service, payable over x402 (USDC on Base). Provided via Apify. Priced around 0.001 USD per call.	ai	$0.001	-	listed	call recipe →

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