Upload images to img402.dev and get a public URL. Images 1MB or under are free AND permanent — no account, no API key, no payment. Larger images (up to 10MB) are free for 30 days, or permanent for $0.01 USDC via x402. Use when the agent needs a hosted image URL — for sharing in messages, embedding in documents, posting to social platforms, or any context that requires a public link to an image file.
Penny-permanent pricing: images 1MB and under are now free AND permanent; up to 10MB free for 30 days, or permanent for $0.01 USDC. Size is no longer a paid feature (10MB on every tier). Updated rate limits and expiresAt semantics.