ffpipe — video conversion

Paid tools are called directly: an unpaid call answers with an x402 payment challenge, and paying it (an x402-aware MCP client does this for you) returns { jobId, statusUrl } for an asynchronous job. The "t" query parameter inside statusUrl is the ONLY proof that you own that job, so keep the whole URL: poll get_job_status with the jobId and that token until the status is finished or error, then download resultUrl within 24 hours of completion. If a job you paid for fails on our side, its status carries a retryVoucher - pass it as the retryVoucher input of the same tool to run the job again for free. If the operation you actually needed is not among these tools, call leave_feedback (free) and say so before you go - those requests are what decide which capabilities get built next.