Pier39 · Nash

The AI seller agent for modern storefronts.

Nash lives on the brand's checkout, reads the customer in real time, and closes the cart in the brand's voice. Built on nash.v1, an open protocol any brand can implement and any AI shopper can speak.

ChatGPT App Store Claude Desktop · MCP Hermes

Pick your door

Stores
Onboard your brand
Install pier39-merchant-server and your store joins the Bazaar. Takes 30 minutes.
→ Get started
Developers
Read the protocol spec
nash.v1 reference: discovery, sessions, MCP tools, hypermedia design.
→ Open docs

What Nash does, in one paragraph

A buyer who hesitates at the cart is met with a single warm line, not a popup. A returning buyer is offered a perk, not a discount they didn't need. A comparison shopper sees an honest spec sheet, not a price drop. Each Nash install is configured through a margin-disciplined lever set — free shipping, bundle, perk, expedited delivery, honest comparison — and the brand sets the caps. Nash respects them. Same agent, two channels: humans on the storefront, AI shoppers over nash.v1.

The Nash Protocol

Nash speaks an open, MIT-licensed HTTP/JSON protocol called nash.v1. Any brand can implement it; any AI shopper can speak it. The protocol is intentionally tiny — three GET endpoints plus two POST equivalents — and hypermedia-driven: every response carries the URL of the next valid request, so shopper agents don't have to construct URLs from templates.

/nash.json
Discovery descriptor. Every Nash-ready store serves this at the root and at /.well-known/nash.json. Lists products, endpoint templates, rate limits. View ours →
nash.v1
The protocol version string. Returned in nash.json. Shoppers check this field to confirm compatibility before opening a session.
Link: rel="nash-protocol"
Every public response from a Nash-ready domain carries an HTTP Link header pointing at nash.json. Even an unrelated URL on the domain tells crawlers + shopper agents where the protocol lives.

What you can do today

Shop with Nash from Claude or ChatGPT. Install the Nash MCP connector and say "find me a Dyson HP07 at the best price available". Nash handles the discovery + transaction in milliseconds.

Put Nash on your store. pip install pier39-merchant-server, drop in a catalog file with your products and discount levers, and your store is Nash-ready and discoverable in the Bazaar within the same afternoon. See the onboarding flow.

Build against the protocol. nash.v1 is open, MIT-licensed, and hypermedia-driven. Read the spec.

Pier39 · Nash · Open Protocol for AI-Native Commerce