Show HN: SignumFlow – API-first document routing and workflow engine

Hi HN,

I’m building SignumFlow — an API-first way to upload documents and run workflows.

Most workflow + signature tools are UI-first. SignumFlow is for developers: you call the API, bring your own UI, and keep users inside your product.

Working today • Upload documents • Start workflows (sequential / parallel routing) • Retrieve workflow + document state • Approvals • Developer portal with API keys + docs

In progress • Webhooks

Docs + quickstart: https://docs.signumflow.com

If you’ve built signature or workflow integrations before: I’d love feedback on what’s confusing / missing or any must-have features.

Happy to answer questions!