Signbee — The e-signature API built for AI agents ✍️🐝

Hey PH! 👋

I just launched Signbee — an e-signature API that lets developers (and AI agents) send legally-binding documents for signature with a single API call.

Why I built it: I was building an autonomous sales pipeline — the agent could find prospects, send outreach, and book meetings. But when it came to closing with a signed contract? Every e-signature tool needed a human
clicking through a GUI. So I built one that doesn't.

How it works:

POST /api/v1/send
{ "signerEmail": "jane@acme.com", "document": "base64..." }

That's it. Signer gets an email, signs on any device, you get a webhook when it's done. No SDK, no OAuth maze, no 200-page docs.

What makes it different:

• 🤖 Agent-first — Built for API consumers, not GUI users

• ⚡ One call — No session tokens, no multi-step flows

• 🔐 Legally binding — OTP verification, audit trail, tamper-proof certificates

• 💸 Free tier — 5 docs/month, no credit card

The bigger picture: We're watching the agentic infrastructure stack come together: 🗓️ Cal.com → scheduling | 📧 AgentMail → email | ✍️ Signbee → signatures | 💲 Stripe MPP → payments

An AI agent can now run an entire deal flow end-to-end. No human in the loop until the signature step.

🔗 Try it: signb.ee 🚀 Product Hunt: Check out our launch

Would love your feedback — and your upvote if you think this matters! 🐝