{"name":"expand-url","description":"URL expander / redirect chain tracer / link-shortener resolver. Returns every redirect hop with status, location, type, response time.","price":"$0.02","method":"POST","input_schema":{"properties":{"url":{"type":"string"},"max_hops":{"type":"number"},"user_agent":{"type":"string"}},"required":["url"]},"input_example":{"url":"https://bit.ly/abc123"},"output_example":{"final_url":"https://example.com/article","hop_count":3,"hops":[]},"x402_payment_required":true,"x402_facilitator":"https://api.cdp.coinbase.com/platform/v2/x402"}