What data and APIs are needed for an AI shopping assistant or customer-service agent?

Before launch, provide four classes of content: product information, transaction and after-sales rules, real conversations, and brand and compliance guidance. The common API scope covers products, live prices, inventory, orders, logistics, membership, and service tickets. If these are incomplete, begin with a read-only FAQ; do not enable quotations, purchases, or after-sales actions.

A demonstration needs only a few product pages. A production assistant must answer what an item costs now, whether it is available, where a particular order is, and whether it can be returned. Those answers vary by user, time, and channel. They cannot live in a prompt or static knowledge base and must come from authoritative business systems.

When defining model, data, and production boundaries, also compare When is a custom AI support assistant worth more than customer-service SaaS? and What should you prepare before building an enterprise AI assistant?; the linked guidance adds context that should be considered in the same decision.

Content inventory

Content	Essential elements	Use	Owner
Product master	SKU, name, specification, attributes, audience, images, sales status	Retrieval, comparison, recommendation	Merchandising
Price and promotion rules	Channel and member prices, effective period, combinations and exclusions	Prevent incorrect prices and discounts	Ecommerce / finance
Transaction and after-sales policies	Shipping, dispatch, returns, warranty, invoice, exceptions	Explain policy and determine escalation	Service owner
Historical conversations	Sanitized frequent, complaint, failed, and escalated cases	Evaluation and realistic language	Service quality
Brand and compliance guidance	Tone, prohibited promises, sensitive goods, competitor policy	Limit exaggeration and unsuitable claims	Brand / legal

Mark each source with version, owner, effective date, and channel. App, store, and mini-program promotions may differ and cannot be merged into one answer. Exclude expired offers, obsolete return policies, and unapproved “good” agent responses from the default source set.

APIs determine what the agent can do

API	Minimum capability	Access	Test before launch
Product, price, inventory	Current status by SKU and channel	Read	Out of stock, delisted item, expired price, timeout
Order and logistics	Query the authenticated user's order and tracking	Read	Unauthorized query, split shipment, refund in progress, no tracking
Membership	Tier, benefits, and necessary profile	Mostly read	Minimum fields, consent, expired identity
Basket / purchase	Draft, add to basket, or redirect to checkout	Write	Idempotency, price reconfirmation, rollback
Service ticket	Create, append, escalate, and query status	Write	Duplicate creation, attachments, assignment, SLA

API documentation should define authentication, fields, error codes, rate limits, timeouts, idempotency, test environment, and owner. A periodic product export can support an FAQ or recommendation prototype when APIs are not ready, but the interface must show data freshness and must not imply real-time status. Order and member data require identity verification; a model cannot decide who the user is.

Choose a safe first release

Scope	Requirement	Risk	Recommendation
FAQ service	Effective content, historical questions, human escalation	Cannot answer personal orders or live status	Start here while inputs are incomplete
Shopping assistant	Products, price, inventory, brand rules	Wrong price, unavailable recommendation, exaggerated claim	Enable after interfaces are stable
Action-taking agent	Order, member, basket, and ticket write APIs	Excess privilege, duplicate action, incorrect after-sales result	Add confirmation and limits one action at a time

Evaluate frequent and ambiguous needs, unavailable items, conflicting promotions, out-of-scope questions, complaints, unauthorized requests, and prompt injection. Track factual correctness, availability of recommendations, price and inventory consistency, citations, escalation, tool success, duplicate writes, P95 latency, and conversion. Conversion must not improve through hidden constraints or misleading claims.

Wavesteam works with merchandising, service, IT, and legal owners to identify source and API gaps, then designs a controlled “retrieve product—verify price and stock—explain recommendation—add to basket or escalate” process. Deliverables can include the content console, customer interface, API logs, human workbench, and evaluation report. We do not promise autonomous shopping when live interfaces are absent.

References

• The OpenAPI Specification defines a standard description for paths, parameters, responses, and security; business rules still come from the client.
• The OWASP Top 10 for Agentic Applications 2026 addresses tool misuse, identity, privilege, and autonomous action.
• The OWASP Application Security Verification Standard covers identity, sessions, access control, APIs, and sensitive data.

Regulated goods such as medical, health, or financial products require client legal review of advertising, recommendation, and disclosure rules.