Any simple tool to sell API?

[campervans]

Are there any frameworks, opensource projects or paid projects, where I can sell access to my api?

Something that handles user management, billing and usage monitoring and limiting?

Ideally not an aggregator like RapidAPI, but for a standalone product.

[aahansawhney]

Are you looking to add all this to your own API or put it in a marketplace?

[campervans]

I'm looking at the simplest way to monetise various API's I have. Without building from scratch things that are common across paid API's. Like whitelisting IP's, rate limiting, usage monitoring, different ways of charging/pricing models and enforcement.

For example I have a Factsheet API for Mutual Funds and ETF's, we have the most extensive repo of available factsheets. I'm unsure if Financial Institutions will switch, so simply want a framework, where by I can easily try and monetise it.

Any ideas :)