SIG · Signatures
Signatures without the SaaS tax.
Legally binding e-signature under your own domain — no per-seat pricing, no vendor lock on your executed documents.
SIG is self-hosted document signing: templates, signing links, and executed documents that live on your infrastructure with your certificate.
Agreements are the conversion moment of most B2B journeys — SIG keeps that moment on your rails, connected to the records and journeys that produced it.
Your domain, your certificate
Signers see your brand; documents are sealed with a certificate you hold.
Templates + API
Standard agreements go out in seconds — by hand or programmatically from the stack.
No per-seat tax
Send unlimited documents from unlimited team members. It's your server.
Available today: make your business readable by AI agents.
While SIG rolls out to clients, MCP is live now — a one-time $500 conversion that puts your business on the agent-facing web. Start at mcp.psychogra.ph →