The Ecosystem

A new commerce channel is forming.
Colter gets you in.

Name: Colter
Author: Colter

AI agents are becoming buyers. Google, Shopify, OpenAI, and Stripe are building the infrastructure. Here's how it fits together.

Check Your Store See how it works

The opportunity

This market is measured in trillions.

The infrastructure is live, the protocols are shipping, and agents are already shopping.

$3–5T

Global consumer commerce mediated by AI agents by 2030

McKinsey & Company, Oct 2025

90%

Of B2B buying will be AI-agent intermediated by 2028, pushing $15T through agent exchanges

Gartner, Nov 2025

$300B–$500B

25% of U.S. e-commerce will be agentic by 2030

Bain & Company, Dec 2025

30+

Companies endorsing UCP including Google, Shopify, Walmart, Target, Stripe

ucp.dev

59%

Higher growth for companies with AI agents vs. those without during 2025 holiday season

Salesforce, Jan 2026

Open protocols shipping today for agent discovery, payment, and coordination

Protocol landscape

How agents buy

Three paths to purchase.

Agents don't browse like humans. They discover, negotiate, and transact through structured protocols.

PATH 01

Agent → Store

An agent visits your store directly — discovers products, adds to cart, completes checkout.

Google AI Mode, ChatGPT Operator

PATH 02

Agent ↔ Agent

A personal agent negotiates with your store's agent. Prices, bundles, terms — resolved autonomously.

User → Their Agent ⇄ Your Agent → Transaction

A2A protocol, multi-agent negotiation

PATH 03

Brokered Agent → Store

A broker aggregates across vendors — compares products, bundles from multiple stores, presents the best option.

Multi-vendor comparison, bundle optimization

The Flow

How an AI agent shops

Every AI shopping interaction follows this path. Tap a step to see the protocols.

AI Agents

Gemini
ChatGPT
Claude

Discover

Agent instructions
on your website

llms.txtUCP ManifestSchema.orgA2A Card

Browse & Shop

Product search
Cart & checkout
Order tracking

MCPA2AUCPREST

Pay

Agent-initiated
payments

ACPx402AP2

Your Store

Shopify
WooCommerce
Custom

Colter—Covers the entire ecosystem

Check, test, fix, and monitor across every protocol layer.

Check

Score your store's agent readiness

Fix

Generate missing configs and endpoints

Test

Send AI personas to shop your store

Lens

Monitor real agent traffic in production

How an Agent Shops Your Store

Universal Commerce Protocol

UCP

Phase 1 / Discovery

The agent finds your store, browses your catalog, checks prices and availability. UCP defines the common language between platforms, agents, and businesses.

Catalog browsing and product search
Dynamic pricing and tax calculation
Identity linking via OAuth 2.0
Surface-agnostic: chat, visual, voice

Agents using this today: Google AI Mode, Gemini, Google Shopping

Handoff

Agent Commerce Protocol

ACP

Phase 2 / Purchase

The agent orchestrates checkout. ACP defines the commerce flow between buyer, agent, seller, and payment provider. Every purchase requires explicit user approval.

Agentic Checkout session lifecycle
Delegate Payment with tokenized credentials
PCI-compliant, user approves every purchase
Supports goods, digital, subscriptions

Currently live in: ChatGPT (Instant Checkout), Microsoft Copilot

Both protocols are open standards. Both are backed by the biggest names in commerce and AI.

Where Colter Fits

The readiness layer.

Most stores can't be found, browsed, or bought from by AI agents. Colter sits between the protocols and your store — diagnosing every gap.

Check Your Store

AI AgentsConsumer surfaces

Protocols (UCP, ACP, MCP, WebMCP, A2A)Infrastructure

Colter — Readiness Verification← You are here

Your StoreBusiness backend

Ready?

Can AI agents find your products?

Most stores have zero protocol coverage. If you're not surfacing the right signals, you're invisible to AI.