{"api_base":"http://5.161.77.112/api","asset":"USDC","asset_address":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","auth":"none — payment is the authentication (x402 challenge-response)","best_for":["autonomous SEO agents","GEO/AEO research agents","competitor intel agents","content agents needing live search data"],"challenge_header":"PAYMENT-REQUIRED","description":"Pay-per-query SEO API for AI agents. Backlinks, keywords, SERP and domain data. Settled in USDC via x402. No API key. No subscription.","how_to_buy":"Call the endpoint. Receive HTTP 402 PAYMENT-REQUIRED. Sign the USDC payment on Base. Retry with PAYMENT-SIGNATURE header. Verified settlement returns JSON.","network":"eip155:8453","operator":"SCRIPTMASTERLABS","pay_to":"0x5bbd32e0478e49a7540ef2d760e0b0f9aa6328b2","policy":{"buyer_origin_rule":"Internal tests and owner-funded calls must not be represented as stranger demand.","instruction":"Always fetch the fresh PAYMENT-REQUIRED challenge before paying. The live challenge controls exact amount, asset, network and receiver."},"prices":[{"description":"Backlink data for a domain.","endpoint":"POST /api/seo/backlinks","id":"backlinks","name":"Backlink query","price_usdc":"0.15"},{"description":"Keyword volume, CPC, competition, difficulty.","endpoint":"POST /api/seo/keywords","id":"keywords","name":"Keyword query","price_usdc":"0.10"},{"description":"Domain authority overview.","endpoint":"POST /api/seo/domain","id":"domain","name":"Domain overview query","price_usdc":"0.10"},{"description":"Live SERP snapshot for a keyword.","endpoint":"POST /api/seo/serp","id":"serp","name":"SERP query","price_usdc":"0.01"},{"description":"Site audit.","endpoint":"POST /api/seo/audit","id":"audit","name":"Site audit query","price_note":"+ $0.001 per page","price_usdc":"0.25"},{"description":"AI-search visibility check.","endpoint":"POST /api/seo/ai-visibility","id":"ai-visibility","name":"AI visibility query","price_usdc":"1.50"}],"provider":{"landing":"https://scriptmasterlabs.com/toll-booth","legal_name":"Script Master Labs, LLC","name":"ScriptMasterLabs","website":"https://scriptmasterlabs.com/"},"request_header":"PAYMENT-SIGNATURE","response_header":"PAYMENT-RESPONSE","schema":"sml-x402-tollbooth/v1","serviceName":"The Toll Booth","x402Version":2}