Better purchases, for both sides.

Most purchases are take-it-or-leave-it. A price on a page, a rate at the desk, a quote in an email. You pay it or you walk away. Almost nobody asks what else the business could do.

That leaves a lot on the table for both sides. A hotel with an empty suite on a quiet weekend would happily give it to a guest celebrating an anniversary. A contractor with an open crew day next week would rather fill it than lose the job. The guest and the homeowner never hear about it, because nobody asked.

Value is different for everyone

A suite upgrade costs a hotel very little when the suite would sit empty, and it can make one guest’s weekend. Another guest would rather have a winery tour. A third only cares about price. Price is one lever among many.

Mumm finds the extras that cost a business little and matter most to the buyer. The buyer gets a better purchase. The business wins the sale without cutting its rate.

How it works today

You tell us what you’re planning and what you’d love. We ask the businesses that fit. They reply with offers built around you, and you compare them and pick the one you want.

Businesses set their own rules: what they can offer, what it costs them and when it’s available. Mumm offers those extras before it touches price, and only inside those rules. A business can answer requests itself, use Mumm’s seller agent or connect its own.

Bills work differently. For a medical or recurring bill, we check the charges for errors, look for assistance programs and ask for a payment plan that fits. A settled balance is better for the provider than one that goes to collections.

Where this goes

More people will hand the asking to an agent that knows what they value. More businesses will answer through an agent that knows what they can offer. Those agents need shared rails to agree on terms.

Mumm is building those rails. A buyer’s request says what they want, what they value and where they can flex. A seller’s terms say what they can offer and when. Mumm matches the two and records the offer, the agreement and the reason both sides said yes.

When that works, more purchases happen that otherwise wouldn’t. The suite gets used. The crew day gets filled. The bill gets paid on a plan instead of going to collections. Both sides come out ahead.

Why the rails should be open

A shared interface lowers the work of joining. Businesses and agent providers should be able to connect without rebuilding their systems, and each keeps control of its own inventory, prices and private rules.

The versioned seller API and its OpenAPI specification are the integration to build against today. Published version changes give integrators a clear migration path.

What both sides can count on

• Each side’s private limits and instructions stay with that side.
• An offer shows the full price, what’s included and its conditions.
• Nothing is agreed until the buyer accepts the offer.
• The record shows who sent each offer and who agreed to it.

Start here

Planning something? Tell Mumm what would make it great at trymumm.com.

Running a business? Start at trymumm.com/business. List what you can offer, then answer requests yourself or connect your own seller agent.

Building an agent? The seller protocol is documented at trymumm.com/developers/seller-protocol.

“What would make it great?”