Image editing via x402 (PNG, JPEG or WEBP input, optional mask) in USDC on Base ...
https://ask.singitai.app/v1/images/editsOverview
Image editing via x402 (PNG, JPEG or WEBP input, optional mask) in USDC on Base and Solana. Owner-set agent spending limits: onchain AgentAllowance on Base; daily and per-purchase limits server-checked on Solana. Settled answers include a receipt; owners can Revoke. No API key; the max charge is quoted before signing. GET /v1/catalog lists models.