Engineering a Rate-Aware Commerce Intelligence Pipeline

Engineered an authenticated commerce-data pipeline for schema discovery, product ranking, inventory signals, freight analysis, and deterministic execution across constrained API surfaces.

Role

API integration
Schema discovery
Authentication
Product analysis
Business-system design

System challenge

Analyze jewelry products for European customers while prioritizing margins, shipping cost, reliable inventory, visual appeal, and delivery feasibility to Switzerland and the EU.

Constraints

Working within real limits

✕Local connector only — no remote connector available
✕No account changes or orders permitted
✕Authentication state was initially inconsistent (manual session vs. API key)
✕Catalog endpoints required controlled request pacing at approximately one request per second
✕Product comparisons required explicit provenance and completeness metadata

Approach

How it was built

01
Inventoried 65 local tools and their exact schemas
02
Identified API-key authentication support — cleared the mismatched manual session and authenticated using API key only
03
Verified login, shops, balance, and orders independently
04
Searched jewelry categories, ranked 20 candidates using inventory, listing traction, verified warehouse, video, price, and freight signals
05
Designed a deterministic sequential execution strategy with request pacing for catalog operations
06
Attached provenance and completeness metadata to every comparison row

Technical validation

Implementation evidence

Observable engineering evidence. Discipline: API SYSTEMS ENGINEERING

Tools inventoried

Authentication

API-key only — succeeded

Account shops returned

Product report

20 candidates

Freight measured

Switzerland and Germany — representative

Execution Control

Deterministic sequential pacing

Outcome

What was delivered

Delivered a reusable commerce-intelligence workflow aligned with the API operating contract
Produced a 20-candidate decision report combining inventory, traction, warehouse, media, price, and representative freight signals
Validated deterministic request pacing and sequential catalog execution

Technologies

Stack and tools

CJ OpenAPIMCPAPI authenticationProduct dataInventory analysisFreight analysisHTML reportingRate-limit handling

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