How to prepare your catalog for AI-powered search and agentic checkout
Two shifts are hitting product catalogs at the same time. On the discovery side, a growing share of buyers start in an answer engine — ChatGPT, Perplexity, Google AI Overviews and AI Mode, Gemini — that reads the web and returns one synthesized recommendation instead of ten blue links. On the transaction side, those same models are starting to buy: OpenAI and Stripe shipped the Agentic Commerce Protocol (ACP) in September 2025, Google announced the Agent Payments Protocol (AP2) with 60-plus partners the same month, and Visa Intelligent Commerce and Mastercard Agent Pay are wiring agents directly into card rails. The buyer increasingly never sees your product page. An agent reads your feed, compares you against three competitors, and completes the purchase.
Both shifts reward the same thing and punish the same thing. They reward catalogs that are machine-readable, complete, and unambiguous. They punish catalogs where the real specs live in a PDF spec sheet, where attributes are buried in a paragraph of marketing copy, where half the SKUs have no GTIN, and where price and availability in the feed are two days stale. A human shopper will squint past those gaps. A model will not — it will quietly skip you, or worse, transact against bad data and generate a return.
This guide is the concrete work. It separates the two layers of readiness (being found versus being bought), walks through the data that each layer needs, and is honest about the tradeoffs and the order you should do things in. It is written for B2B distributors, retailers, brands, and manufacturers who own a real catalog — hundreds to millions of SKUs — not a 40-product Shopify store. Where a tool genuinely helps, this guide says so; where the work is just disciplined data hygiene, it says that too.
What changes when a model — not a human — reads your catalog
A human visitor forgives a lot. They infer that "3/4 in." and "0.75"" are the same dimension, they open the PDF to find the amperage rating, they tolerate a hero image with the spec table baked into the JPEG. A model does none of this reliably. It extracts what is explicit and structured, and it treats everything else as missing.
That single fact reorganizes your priorities. To recommend or buy a product, an AI system needs to answer three questions from your data alone:
- What is it, precisely? Typed attributes, specs, materials, dimensions, units — not adjectives.
- What is it for and what does it fit? Use cases, applications, compatibility and fitment, the buyer's situation in plain language.
- Can it be transacted right now? A stable identifier, a real price, in-stock availability, and the shipping and return terms needed to compute landed cost.
Miss the first two and you are invisible to discovery. Miss the third and you are visible but un-buyable — the agent surfaces a competitor it can actually complete a cart with. The rest of this guide is organized around closing those three gaps at catalog scale, because one beautifully enriched SKU does nothing; the model judges your whole catalog's legibility.
Separate the two layers of readiness: discovery and transaction
Treat "AI search" and "agentic checkout" as two readiness layers with different owners and different acceptance tests. Conflating them is why projects stall.
Discovery layer (be found and cited). This is the content and structure that lets an answer engine, an on-site semantic search, or a marketplace AI understand and recommend your product. The currency is completeness and clarity: attributes, descriptions, use context, structured markup. The test: given only your catalog data, can a model correctly tell a buyer what this is, who it's for, and why it fits their stated need?
Transaction layer (be bought by an agent). This is the operational data and plumbing that lets an agent put your item in a cart and pay. The currency is accuracy and freshness: a stable product ID, real-time price and inventory, shipping options, tax, and return policy, exposed through a feed or protocol (ACP product/checkout specs, an MCP commerce server, or your marketplace's agentic API). The test: can an agent compute total landed cost and complete a purchase that won't bounce back as a return or a cancellation?
You can win the discovery layer and still lose the sale if the transaction layer is stale. You can have perfect inventory sync and never get surfaced because your content is thin. Most teams are stronger on transaction (they already run feeds to Google Merchant Center and marketplaces) and weaker on discovery. Audit both before you invest.
Fix product identity first: GTIN, MPN, and brand
Identity is the foundation both layers stand on, and it is the most common silent failure. Agents and answer engines resolve and compare products by stable identifiers. Without them, a model cannot confidently tell that your listing and the manufacturer's spec are the same item, cannot match you in a comparison, and on several agentic surfaces simply won't include the SKU.
Work through this in order:
- Assign a GTIN/UPC to every sellable unit. Google has signaled for years that unique product identifiers improve eligibility and matching; agentic surfaces inherit that logic. Items genuinely without a GTIN (custom, bundled, private-label) need a clear, consistent fallback — a real MPN plus brand.
- Normalize brand to one canonical value. "3M", "3M Company", and "MMM" are three brands to a machine. Map them to one.
- Carry MPN, and keep it clean. Manufacturer part numbers are how B2B buyers and their agents cross-reference. Strip the noise (trailing pack codes, internal SKUs jammed into the MPN field).
- Model variants as variants, not as twenty orphan SKUs. Size, color, and pack-size should roll up to a parent with each child carrying its own GTIN. Flattened variant catalogs confuse comparison and create duplicate, competing pages.
- Deduplicate. Two listings for the same physical item split your signal and let a model cite the worse one.
This is unglamorous and it is the highest-leverage thing on the list. A complete, deduped identifier layer is what makes everything downstream matchable.
Structure and normalize your attributes
Free-text descriptions are for humans; fields are for machines. The single biggest discovery improvement for most catalogs is moving specs out of prose and into typed, normalized attributes with consistent units.
What "good" looks like:
- Typed values, not strings. Voltage is a number with a unit, not "runs on 120v or so." Color is a controlled value, not free text.
- Consistent units, one system, with the unit named. Pick a convention (imperial or metric, or carry both explicitly) and apply it catalog-wide. "0.75 in" beats "3/4"" beats "three-quarter inch" only because it's parseable and consistent.
- A schema per category. A circuit breaker and a safety glove need different attribute sets. Map every SKU to its category's required and optional attributes, and measure coverage — what percentage of required fields are actually populated. Coverage, not row count, is your readiness metric.
- Compatibility and fitment as structured relationships. "Fits Model X, Y, Z" should be data an agent can filter on, not a sentence. For distributors this is often the deciding signal in a comparison.
The honest tradeoff: building category schemas and back-filling attributes across a large catalog is real work, and it's exactly the work that doesn't fit in a PIM's UI one SKU at a time. A PIM stores these fields; it doesn't populate them. This is the layer where an enrichment system (Anglera's core job) earns its keep — gathering missing specs from source documents and the manufacturer, normalizing units, and scoring each SKU's completeness against how buyers actually search — then writing it back to your PIM as the source of truth.
Write descriptions that answer buyer questions, not market at them
Answer engines don't reward clever copy; they reward content that maps to the buyer's question. The reframe: stop writing descriptions about the product and start writing the answers to what buyers ask before they choose.
Practical moves:
- Lead with the job, not the adjectives. "Cut-resistant glove rated ANSI A4 for handling sheet metal" tells a model the use case and the spec. "Premium, durable, best-in-class protection" tells it nothing extractable.
- Make application context explicit. Who is this for, in what setting, solving what problem, and what does it replace or pair with. This is the language a buyer types into an answer engine, so it's the language that gets you matched.
- Answer the real pre-purchase questions on-page. Compatibility, sizing, certifications, what's in the box, common substitutions. These double as FAQ content a model can cite.
- Cut the fluff that dilutes signal. "In today's fast-paced environment" and "seamlessly unlock" are pure noise to an extraction model and bury the facts that matter.
- Stay factual and consistent. Manufacturer-supplied copy duplicated across a hundred resellers gives a model no reason to cite you; differentiated, accurate, structured content does.
Expose machine-readable feeds and structured data
Great data the model can't access doesn't count. You need to publish it in the formats answer engines and agents actually read.
- Schema.org Product/Offer markup on every product page. Include
gtin,brand,mpn,offers(price,priceCurrency,availability),aggregateRating/reviewwhere real, plus shipping and return details in the Offer. This is the lingua franca for both classic rich results and AI extraction. - A clean product feed. Keep your Google Merchant Center / Shopping feed complete and current: title, description, GTIN, price, availability, and the category-specific attributes. Many agentic surfaces are built on or modeled after this feed structure.
- Adopt the emerging agentic specs deliberately. The Agentic Commerce Protocol (OpenAI + Stripe) defines a product feed spec, a checkout spec, and a delegated-payment spec; Google's AP2 standardizes agent-initiated payments; the Model Context Protocol (MCP) is becoming a common way to expose catalog and cart operations to agents. You don't have to implement all of them, but pick the surfaces your buyers use and meet their spec exactly.
- Don't trap data in PDFs and images. A spec sheet PDF or a JPEG with the dimensions baked in is invisible to most extraction. If a fact matters, it must exist as text and, ideally, as a field. Give images structured, descriptive alt text and multiple angles.
Rule of thumb: every fact a buyer or agent needs should be reachable in at least one machine-readable place — markup, feed, or API — not only in human-rendered HTML.
Nail the transaction layer: price, availability, shipping, returns
This is where discovery readiness converts into actual agentic sales — or fails. Agents transact on current data and abandon or mis-buy on stale data.
- Real-time, accurate price. Including the price an agent will actually be charged: any contract pricing, quantity breaks, and currency. A mismatch between feed price and checkout price is a top reason agents abandon a cart.
- True inventory and availability. "In stock" must mean in stock. An agent that completes a purchase against phantom inventory generates a cancellation, and agentic platforms penalize sellers whose carts fail.
- Structured shipping and lead time. Agents compute landed cost and delivery date, not list price. Expose options, costs, and realistic lead times. For B2B, freight and bulk handling need to be representable, not hidden behind "call us."
- Machine-readable returns and warranty policy. Return window, restocking fees, and conditions are inputs an agent weighs when choosing between you and a competitor. Vague policy reads as risk.
- Tax and total-cost clarity. The agent needs to land on a final number it can present and pay.
- Feed freshness and sync cadence. Decide your update SLA (near-real-time for price/inventory, daily or better for attributes) and monitor it. A perfect catalog that syncs every 48 hours behaves like a stale one during the hours that matter.
Sequence the rollout, measure coverage, and avoid the usual pitfalls
Don't boil the ocean. Sequence by impact and prove it on a slice before scaling.
A workable order of operations:
- Audit (week 1). Score the catalog: GTIN coverage, attribute completeness by category, percentage of SKUs with structured markup, feed freshness. You can't manage what you haven't measured.
- Identity (weeks 1–2). Fix GTIN/MPN/brand and dedupe. Highest leverage, unblocks everything.
- Enrich a priority category (weeks 2–4). Take your best-selling or most-competitive category, fill attributes to high coverage, rewrite descriptions to buyer questions, add markup. Prove lift before scaling.
- Wire the feeds and a transaction surface (weeks 3–5). Markup live, Merchant Center clean, and one agentic surface (an ACP feed, an MCP server, or a marketplace API) working end to end.
- Scale across the catalog and set the freshness SLA.
Pitfalls that quietly filter you out:
- Treating it as a one-time project instead of an ongoing data discipline — coverage decays as SKUs are added.
- Enriching one hero SKU while the catalog stays thin; the model judges breadth.
- Specs locked in PDFs and image-baked spec tables.
- Missing or duplicate GTINs, and variants flattened into orphan SKUs.
- Inconsistent units across categories.
- Stale price/inventory in the feed — the fastest way to turn an agentic sale into a return.
- Doing the content work at the feed instead of upstream in the PIM, so every channel re-derives the same fixes. Enrich once at the source of truth and let every surface inherit it.
Step-by-step checklist
- Assign a GTIN/UPC to every sellable unit; give true no-GTIN items a consistent MPN + canonical brand fallback
- Normalize brand names to one canonical value and deduplicate competing listings for the same physical item
- Model size/color/pack as variants under a parent, each child carrying its own GTIN
- Build a required-attribute schema per category and measure populated coverage, not just SKU count
- Move specs out of prose into typed fields with consistent, explicitly-named units catalog-wide
- Capture compatibility/fitment as structured, filterable data rather than sentences
- Rewrite descriptions to answer real buyer questions: job, application context, certifications, what's in the box
- Add Schema.org Product/Offer markup (gtin, brand, mpn, price, availability, shipping, returns) to every product page
- Keep your product feed (Google Merchant Center / agentic ACP feed) complete and synced on a defined freshness SLA
- Expose real-time price, true inventory, shipping/lead time, and machine-readable return policy for the transaction layer
- Get any fact a buyer needs out of PDFs and images and into text or a field
- Audit coverage first, prove lift on one priority category, then scale — and enrich upstream in the PIM, not at the feed
Frequently asked questions
What is agentic checkout, and how is it different from AI search?
AI search is discovery: an answer engine like ChatGPT, Perplexity, or Google's AI Overviews reads the web and recommends a product. Agentic checkout is transaction: an AI agent acting for a buyer actually completes the purchase. They emerged together in 2025 — OpenAI and Stripe's Agentic Commerce Protocol and Google's Agent Payments Protocol both landed in September 2025 — and they reward the same catalog qualities. Search needs your data to be complete and clear enough to be recommended; checkout needs it accurate and fresh enough to be bought. You can win one and lose the other, so prepare for both layers separately.
Do I really need a GTIN on every product?
For anything that has one, yes. Stable identifiers are how agents and answer engines match, compare, and resolve products, and several agentic and shopping surfaces reduce or drop eligibility for items without them. For genuinely identifier-less items (custom, bundled, or private-label goods), use a clean manufacturer part number plus a canonical brand as a consistent fallback. The failure mode to avoid is a catalog where GTINs are missing or duplicated at random — that's what makes a SKU un-matchable.
Isn't my PIM enough to make my catalog AI-ready?
A PIM stores and governs the data, but it doesn't gather, complete, or normalize it for you. Most catalogs fail AI readiness on the fields the PIM leaves empty: missing specs, inconsistent units, thin descriptions, no compatibility data. That enrichment work — pulling specs from source documents and manufacturers, normalizing units, scoring completeness against how buyers search, and writing it back — is the layer that sits alongside the PIM. Anglera does that work and pushes clean data back to the PIM as the source of truth. The PIM is the filing cabinet; something has to fill the files.
Where should I do the data work — in the feed, or upstream?
Upstream, in your source of truth, almost always. If you patch titles, attributes, and descriptions at the feed level, every channel — Merchant Center, marketplaces, your site, each agentic surface — re-derives the same fixes independently, and they drift. Enrich once in the PIM and let every downstream feed and protocol inherit consistent data. The exception is channel-specific formatting (a marketplace's exact category taxonomy), which can be mapped at the feed.
How do I measure whether my catalog is actually ready?
Use coverage metrics, not row counts. Track GTIN coverage (percent of sellable units with a valid identifier), attribute completeness by category (percent of required fields populated), structured-markup coverage (percent of pages with valid Product/Offer schema), and feed freshness (how current your price and inventory are versus reality). Set targets per category, audit before you start, and re-measure after enriching a priority category so you can prove lift before scaling to the whole catalog.
What's the single most common reason a catalog gets skipped by AI?
Facts that aren't machine-readable. The specs exist — but they live in a PDF spec sheet, a JPEG with a baked-in table, or a paragraph of marketing copy instead of typed fields and structured markup. A human will dig for them; a model treats them as missing and recommends a competitor whose data is explicit. The close second is stale price or phantom inventory, which turns an agentic sale into a cancellation or return.