One-off experiment

gen-siggy

Type a name, pick how many variants you want, and watch each signature appear the moment it finishes drawing — every one signed by a different imagined hand. Every letter is drawn as a unique gesture — never rendered like a font — so a repeated capital (the two B’s in Bob Bixby, the two S’s in Sam Smith) never comes out the same way twice.

Number of signaturesVariants:

For agents

The same generator, over MCP

Everything above is also exposed to AI agents through a Model Context Protocol server — two tools (list_signature_styles, generate_signature) speaking JSON-RPC over HTTP.

Watch the protocol in action

This panel performs the exact handshake an agent does — no mocks. Each raw JSON-RPC message appears below as it crosses the wire.