I'm in the process of creating a REST API for interfacing with a new SaaS site we're building and we need to document the API for use by a third-party iOS developer (plus other developers once the service goes public). Are there any existing database driven content management systems that facilitate building API documentation for this type of system?
I'm hoping for something more tailored than a generic wiki or wordpress build would provide.
edit: I should probably mention that our VPS is setup as a LAMP stack, so something PHP driven would be preferable.
Self-documenting is not a requirement, I'm actually wanting something more manual. I'd like to use the CMS as a designing platform for APIs that still need to be written as well.