Developers rent API docs, monitoring, secrets and webhook plumbing by the month for side projects that earn nothing yet. Self-hosted pay-once utilities cost less than one month of the SaaS they replace.
The tool this job usually means renting is ReadMe.io, at $99+/mo โ roughly $1,188 a year, every year. Docsmith API does the job for a one-time $29 โ running locally on your own machine.