The quantra API provides programmatic access to quantitative finance tools. This API was created with QuantLib, an open-source software library that provides tools for financial instrument valuation and related subjects. It's still in beta and not yet ready for production use. Examples are provided using Google sheets.
Twelve APIs have been added to the ProgrammableWeb directory in categories including Messaging, Video, and Compliance. Highlights today include an API for retrieving financial data from regulatory resources and an API for detecting sentiment in customers written interactions.