Meet Sienna, our AI hardware advisor

Two ways to talk to Sienna: right here, or inside the AI assistant you already use

Either way she sizes your pulls, matches the holes you already have, pairs finishes, and hands you a cart from the live Knobs.co catalog of 50,000+ pieces. Nothing technical is required to use her here.

Ask Sienna here Use her in my own AI

Free. No account. If it needs a person, she brings one in.

Sienna at the Knobs.co showroom counter holding a brass pull

Nothing to set up

Talk to Sienna right here on knobs.co

Open her page and start typing. She sizes your pulls, matches your finish, and builds your plan with you. Free, no account, works in any browser.

Ask Sienna now Most people start here. The rest of this page is only for the second door.

Already use an AI assistant?

Bring Sienna into the one you have

If you chat with Claude or another AI assistant, you can add Sienna to it and ask about hardware in the same window. Same Sienna, same catalog, your assistant.

See how to connect Available inside Claude today. Other assistants take one address.

Connecting her to your own assistant

Only if you chose the second door. Pick the one that matches what you use; each one reaches the same Sienna.

You use Claude

Add Sienna by Knobs.co

Open the listing in Claude's connector directory and click Add. Sienna shows up as a tool in your chats, free, on any paid Claude plan.

Open in Claude's directory

claude.ai/directory/sienna-knobs

You use another assistant

Paste one address

Any app or agent that connects to MCP servers (Cursor, agent frameworks, your own) takes this address. No key, no sign-in.

https://sienna.knobs.co/mcp

Streamable HTTP. Listed in the MCP registry as co.knobs/sienna.

Your agent only browses

Ask in one web request

One question in, one complete answer out, with links to the exact products. Markdown by default, JSON on request.

sienna.knobs.co/ask?q=…

Add &format=json for JSON.

What your assistant can do with her

Everything below runs on the live catalog. Checkout always happens on knobs.co; no card is ever charged in a chat.

Search the catalogBy size, finish, style, brand, and budget per piece.

Size your pullsThe right length for each drawer and door width.

Match existing holesPulls that fit the center-to-center spacing you already have.

Pair finishesWhat works with your faucet, appliances, and cabinet color.

See every option for one productAll finishes, sizes, and list prices in one answer.

Build a Hardware PlanEvery door and drawer counted and priced for a whole kitchen or bath, saved at a link.

Start samples or a cartSample-eligible pieces, or a pre-filled cart you finish on knobs.co.

Reach a personAsk for a review or a call with our Trade Manager. You get one confirmation email first.

Try asking

Once Sienna is connected, say it the way you would say it to a friend who sells hardware.

“What size pull should I use on a 30-inch drawer in brushed brass?”Sizing

“My drawers are drilled at 3 inches center to center. What matte black pulls fit?”Existing holes

“Which knob matches the Top Knobs Lynwood pull in honey bronze?”Matching a collection

“How does the Knobs.co sample program work?”Store facts

For developers and agent builders

The technical door

A stateless MCP server over Streamable HTTP, JSON-RPC, no authentication, plus one plain HTTP endpoint for agents that only browse. Prices come back as list prices. Stock and lead times are never stated; the answer tells you when a person is needed.

Rate limits apply per address and per day. A 429 means try later or send the shopper to the links in the answer. Keep product links exactly as returned: they carry a tag that says the visit came through an agent, and nothing about the shopper.

MCP server	`https://sienna.knobs.co/mcp`
HTTP ask	`GET https://sienna.knobs.co/ask?q={question}` &format=json · POST {"q"} accepted
Docs	sienna.knobs.co · openapi.json · llms.txt
Registry	`co.knobs/sienna` (official MCP registry)
Tools (11)	ask_siennasearch_catalogget_productsizing_guidestore_infosearchfetchbuild_plancart_linkstart_samplesrequest_consultation

No account, no personal data. The only exception: an email you give to request a consultation, used once to confirm.

List prices, confirmed at checkout on knobs.co.

Stock and lead times are confirmed by our team, never guessed by Sienna.

A person is one step away: cs@knobs.co or 1-800-530-8245.

Planning a whole kitchen or bath?

Sienna's own page on knobs.co sizes and counts every door and drawer, orders samples, and sends the plan by email, with a review by Kayla, our Trade Manager. Free, right now.

Plan with Sienna