Ask Japan Hub
Server Details
Ask Japan plus third-party MCP services listed on the Ask Japan hub.
- Status
- Healthy
- Uptime
- 100.0% over the last 24 hours
- Last Tested
- Transport
- Streamable HTTP · MCP 2025-06-18
- URL
- ChatGPT
- –
- Claude
- –
TDQS
Scored across 16 tools
Tools split into clear sub-domains (concierge services, MARU takeout, Japanese corporate/address lookup, provider hub) and each action targets a distinct resource. Minor overlap exists between lookup_postcode and search_address (both postcode-centric), and check_invoice partially duplicates the invoice-status field in get_company_profile, but descriptions make the intended split workable.
The bulk of the surface follows a clean verb_noun snake_case pattern (get_menu, search_company, place_takeout_order, request_service). The two hub_ tools invert the verb-first convention (hub_list_providers, hub_register_provider), which is a minor but visible deviation.
16 tools is on the heavy side, but they are spread across four genuinely different sub-domains and each one carries a distinct responsibility. No tool feels like filler, though the hub_ tools and quote_purchase sit somewhat apart from the concierge core.
Corporate lookup and address lookup are well covered in both directions, and service requests have create + status follow-up. However, statuses like cancelled/refunded are reported but no tool can cancel or refund a request, takeout orders have no order-status tool despite returning an order number, and quote_purchase has no follow-on ordering path other than a generic service request.
Available Tools
16 toolscheck_availabilityCheck availabilityARead-onlyIdempotentInspect
Check whether a new request can be taken now. Remote work (calls, online reservations) has a daily limit; on-the-ground work takes one job at a time. Returns open or full and when it reopens.
Inputs: no named parameters.
check_invoiceCheck Japanese invoice registrationARead-onlyIdempotentInspect
Check whether a Japanese corporation is a registered Qualified Invoice Issuer (needed for consumption-tax credit). Accepts T + 13 digits or the 13-digit corporate number.
Inputs: number (required).
check_openCheck if a restaurant is openARead-onlyIdempotentInspect
Check whether a MARU Order restaurant is taking takeout orders now, its hours and whether it accepts JPYC with a discount.
Inputs: shop (required).
get_company_profileJapanese company profileARead-onlyIdempotentInspect
One profile for a Japanese corporation from its 13-digit corporate number: registered name and address, invoice (tax) registration status, and listing, industry and capital if it files with EDINET.
Inputs: corporate_number (required).
get_request_statusGet request statusARead-onlyIdempotentInspect
Get the status of a request: received, quoted (price and how to pay), paid, in_progress, done (with result), cancelled or refunded.
Inputs: request_id (required).
hub_list_providersList services on Ask JapanARead-onlyIdempotentInspect
List the third-party services listed on Ask Japan and the tool prefix each one uses.
Inputs: no named parameters.
hub_register_providerList your MCP server on Ask JapanAIdempotentInspect
For service providers: list your public remote MCP server (Streamable HTTP, HTTPS) on Ask Japan so its tools become available to every AI that connects to Ask Japan. The check is automatic: the URL must be public HTTPS, tools/list must work, and tool text must not contain instructions aimed at the AI. Returns approved or rejected with the reason.
Inputs: name (required), mcp_url (required), contact_email (required), description.
list_servicesList services in JapanARead-onlyIdempotentInspect
List the services MARU Japan Hands provides in Japan (Japanese phone calls, restaurant and golf reservations, shopping proxy, on-site checks, interpreting, Osaka stays, home search and property viewings, app development), with prices in JPY, limits and what is not offered.
Inputs: no named parameters.
lookup_postcodeLook up a Japanese postcodeARead-onlyIdempotentInspect
Get the address for a 7-digit Japanese postcode, including large offices that have their own postcode.
Inputs: postcode (required).
place_takeout_orderPlace a takeout orderAInspect
Place a takeout order. Returns an order number and a link. The customer pays at pickup at the counter, or opens the link to pay with JPYC (discounted). This tool never charges or moves money.
Inputs: name (required), shop (required), items (required), pickup_time (required), +1 more.
quote_purchaseInstant quote for buying in JapanARead-onlyIdempotentInspect
Instant cost estimate to buy an item sold in Japan and ship it: item price (from the shop page the user or agent found), our fee (10%, minimum JPY 2,000) and shipping estimated from Japan Post's official EMS table. Read-only: it does not order or charge anything.
Inputs: item_price_jpy (required), ship_to_country (required), item_url, quantity, +3 more.
request_serviceRequest a service in JapanAInspect
Send a request for a service in Japan. Fixed-price services (phone_call JPY 1,500, restaurant_booking JPY 3,000, interpreting JPY 5,000 per 30 min) return the quote and payment details immediately. Other services get a fixed quote from a person within 2 hours (JST 09:00-21:00); requests sent outside hours are handled from 09:00. No email is needed: follow up with get_request_status. Creating a request is free and does not move any money. Full refund if we cannot do the task or you cancel before work starts.
Inputs: details (required), service (required), language, budget_jpy, +2 more.
search_addressFind a Japanese postcode by addressARead-onlyIdempotentInspect
Find postcodes by part of a Japanese address or an office name, e.g. 大阪市北区梅田.
Inputs: text (required).
search_companySearch Japanese companiesARead-onlyIdempotentInspect
Search all ~5.8 million corporations registered in Japan by name (Japanese, partial match). Returns corporate number, address, type and whether it is closed. Use the corporate number with get_company_profile.
Inputs: name (required), limit, prefecture, include_closed.
search_listed_companiesFind listed Japanese companiesBRead-onlyIdempotentInspect
Filter companies that file securities reports in Japan (EDINET) by industry (Japanese name, e.g. 不動産業, 輸送用機器) and minimum capital. Returns securities code and capital.
Inputs: limit, industry, listed_only, min_capital_million_yen.
Tool Schema Changelog
Recent tool additions, removals, and schema changes observed during successful MCP inspections.
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