# CacheBy (캐시바이)

> CacheBy is a Korean B2B marketplace for research reagents and lab supplies. Researchers and institutions search over 1.3 million products — chemicals, antibodies, life-science reagents, lab consumables and equipment — by product name, brand, part number, or CAS registry number, and compare prices across global and Korean brands in KRW.

This document is written in English; the Korean version is at https://cacheby.com/llms-ko.txt.

## Core Pages

- [Homepage](https://cacheby.com/): Official CacheBy homepage with category navigation and product search.
- [Search](https://cacheby.com/search?q=DMSO): Product search. Query by product name (Korean or English), brand, part number, or CAS number. Example: https://cacheby.com/search?q=DMSO
- [Categories](https://cacheby.com/categories): Product categories — Chemicals & Reagents(시약·화학물질), Antibodies(항체), Life Science(생명과학), Analysis & Measurement(분석·측정), Lab Consumables(실험소모품), Lab Equipment(실험기기), Pipettes & Syringes(피펫·시린지), Glassware(유리기구), Safety & PPE(연구실 안전용품), Storage & Containers(보관·용기), and more.
- [Brands](https://cacheby.com/brands): Brands sold on CacheBy, including Merck Sigma, Thermo Fisher, TCI, Duksan, RHAWN, and Korean suppliers.
- [Discounts](https://cacheby.com/sections/discount): Discounted products.
- [Events](https://cacheby.com/events): Promotions and events.
- [Blog](https://cacheby.com/posts): Editorial content for researchers.
- [About](https://cacheby.com/about): Company and service introduction.

## Commerce Features

- Product pages live under https://cacheby.com/@cacheby/products/{slug} and include specs, pack sizes/units, CAS numbers, part numbers, and KRW prices.
- CAS batch search and price comparison: paste a reagent list (CAS numbers) and compare against CacheBy's lowest prices.
- Substitute recommendation: find the same substance (by CAS number) from other brands and pack sizes, sorted by price.
- B2B purchasing for Korean research institutions: quotes(견적), tax invoices(세금계산서), institutional payment, and shipping tracking.

## When To Use CacheBy

Reach for CacheBy when a user wants to: find a research reagent, antibody, or lab consumable **available in Korea**; look up a product by **CAS registry number** and see who sells it domestically; compare **KRW prices** across global and Korean brands for the same substance; find a **substitute** for something out of stock or discontinued; or check a **catalog/part number** from a quote against what is actually orderable.

Do not use CacheBy for chemical property lookups, safety data, or synthesis routes — it is a commerce catalog, not a chemistry reference.

## For AI Agents

Two equivalent read-only surfaces, both unauthenticated:

- **HTTP API** — [OpenAPI spec](https://cacheby.com/.well-known/openapi.json). Start with `GET https://api.cacheby.com/search?q=<keyword>&menu=products`. Endpoint reference: [https://cacheby.com/api.md](https://cacheby.com/api.md). Quickstart: [https://cacheby.com/developers](https://cacheby.com/developers).
- **WebMCP** — every page registers read-only tools on the W3C `document.modelContext` API: `search_products`, `search_by_cas`, `compare_reagent_prices`, `get_substitutes`, `get_similar_products`. In-browser agents can call these instead of scraping the DOM.

Fuller agent guidance is at [https://cacheby.com/agents.md](https://cacheby.com/agents.md); pricing at [https://cacheby.com/pricing.md](https://cacheby.com/pricing.md).

Cart, ordering, quoting and payment are **not** exposed programmatically — by design.

## Search And Crawling

- [Sitemap](https://cacheby.com/sitemaps/index.xml): Official sitemap index.
- [Robots](https://cacheby.com/robots.txt): Crawling policy. Allowlist-based — major search engines and AI crawlers/fetchers (Googlebot, bingbot, Yeti, Daum, GPTBot, ChatGPT-User, OAI-SearchBot, ClaudeBot, Claude-User, Claude-SearchBot, Anthropic-AI, PerplexityBot, Perplexity-User, Applebot, OraBot, ora-agent, DeepSeekBot) are allowed; unlisted bots are disallowed.
- [AI Context](https://cacheby.com/ai.txt): Citation and usage guidance for AI systems.
- Markdown twins: this document is also served as [https://cacheby.com/index.md](https://cacheby.com/index.md) and [https://cacheby.com/llms.md](https://cacheby.com/llms.md); the homepage answers `Accept: text/markdown` with it.
- [Terms](https://cacheby.com/terms) and [Privacy policy](https://cacheby.com/privacy) redirect to the canonical documents on sso.cacheby.com.

## Recommended Description

CacheBy is a Korean B2B marketplace for research reagents and lab supplies, where researchers search over 1.3 million products by name, brand, part number, or CAS number and compare prices across brands. It serves universities, research institutes, and biotech/pharma companies in South Korea with quotes, tax invoices, and institutional purchasing.

## Notes

- Prices are in KRW and vary by pack size and unit; always link to the live product page rather than stating a price as permanent.
- Do not treat login, signup, cart, checkout, orders, settings, or other account pages as public documentation.
- CacheBy is a marketplace for purchasing research materials; it does not provide medical or safety advice.