# bookstore.obunsha.co.jp — schools and language learning — 2 of 5

Home > Browse > By country > Japan > bookstore.obunsha.co.jp

> Probe-verified (tier 2 of 3). Last checked 2026-09-28. 2 of 5 capability checks passed. 2 unknown.

- host: bookstore.obunsha.co.jp
- url: https://bookstore.obunsha.co.jp/
- category: schools and language learning
- type: ecommerce
- country: JP
- language: ja

## Probe-verified · tier 2 of 3

Probed live on 2026-09-28 against rubric v1.2. 2 of 5 checks passed. 2 unknown.

- UNKNOWN — Markdown negotiation (`Accept: text/markdown`)
- UNKNOWN — Markdown twin at a predictable URL (`/page.md`)
- PASS — llms.txt (`/llms.txt`)
- FAIL — API catalog (`RFC 9727`)
- PASS — MCP server card answers (`/.well-known/mcp/server-card.json → tools/list`)

MCP tools (from tools/list on 2026-09-28, served from obunsha-goukaku.myshopify.com): get_checkout, create_checkout, update_checkout, complete_checkout, cancel_checkout, get_cart, create_cart, update_cart, cancel_cart, get_order, search_catalog, lookup_catalog, get_product

## Unverified actions

Read from the page's own content, with the wording each was drawn from. Inference is kept separate from tested facts; an agent completing the action is tier 3.

- **buy** — "" → `https://obunsha-goukaku.myshopify.com/api/ucp/mcp`

## Summary

Official online store of 株式会社 旺文社 delivering English proficiency test preparation books and high school exam reference books with free shipping in Japan, supporting students aiming for university entrance and English certification success.

## Context

565 sites in this index share the category "schools and language learning"; 138 are transactional.

## How we grade

- tier 1 — **Declared**: The site says agents are welcome in its robots.txt. A permission, not a capability.
- tier 2 — **Probe-verified** (this site): We fetched the site and tested each signal ourselves. Dated, repeatable, re-checked on a schedule.
- tier 3 — **Behaviourally verified**: An agent completed the action end to end — booked, bought, submitted — and it worked.

## About this record

Known Good probes sites live and publishes what was tested and when.
Method: https://knowngood.sh/about.md · Rubric: https://knowngood.sh/benchmark

How we found this site: probe discovery. This site didn't declare agent access — we found it by checking the open web. Everything above was tested the same way, against the same rubric, on the date shown. [How we choose what to check, and how to opt out](https://knowngood.sh/bot)

## Where this sits

- Japan: https://knowngood.sh/country/JP
- ecommerce: https://knowngood.sh/type/ecommerce
- schools and language learning: https://knowngood.sh/category/schools-language-learning
- shopify: https://knowngood.sh/platform/shopify
- Browse: https://knowngood.sh/browse
- Rubric: https://knowngood.sh/benchmark