---
title: "Withflex (@withflex)"
description: "Online marketplace for HSA and FSA eligible products."
account: "withflex"
---

# Withflex

Online marketplace for HSA and FSA eligible products.

## APIs

1 public API with a stored document.
Each links to its markdown overview; the same address with
`/llms.txt` in place of `.md` lists its operations.
Changes across these APIs: https://skmtc.dev/withflex/feed.md

- [Flex API](https://skmtc.dev/withflex/apis/flex-api.md): Healthcare payments: HSA/FSA checkout, payment intents, subscriptions, refunds and disputes