I built an e-signature API for AI agents β AMA π
Hey Product Hunt! π
I'm Michael, solo founder of Signbee β the e-signature API built for the agentic era.
The problem: Every signing platform was built for humans clicking through GUIs. But AI agents don't have browsers β they have API calls. I needed something an agent could call to get a document signed in one request, not a 47-step OAuth dance with a legacy enterprise SDK.
What I built: One API call. Document signed. That's it. Signbee gives developers (and their agents) a clean REST API to create, send, and track legally-binding e-signatures.
The bigger picture: We're watching the agentic infrastructure stack form in real time:
ποΈ Cal.com β scheduling
π§ AgentMail β email
βοΈ Signbee β e-signatures
π² Stripe MPP β payments
An AI agent can now research a prospect, send outreach, book a meeting, sign a contract, and process payment β no human, no GUI, end to end.
Built with: Next.js, Prisma, BetterAuth, Resend, and a lot of late nights.
Happy to answer anything about building for agents, the e-signature space, or going solo. AMA! π
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