# Mercari Japan Price Checker — Sold Comps & Market Stats (`jpmarketdata/mercari-japan-price-checker`) Actor Get instant price statistics (median, average, range) from sold listings on Mercari Japan. One call answers: what is this item actually worth in Japan? - **URL**: https://apify.com/jpmarketdata/mercari-japan-price-checker.md - **Developed by:** [h ichi](https://apify.com/jpmarketdata) (community) - **Categories:** E-commerce - **Stats:** 1 total users, 0 monthly users, 100.0% runs succeeded, 0 bookmarks - **User rating**: No ratings yet ## Pricing from $20.00 / 1,000 keyword market analyses This Actor is paid per event. You are not charged for the Apify platform usage, but only a fixed price for specific events. Learn more: https://docs.apify.com/platform/actors/running/actors-in-store#pay-per-event ## What's an Apify Actor? Actors are a software tools running on the Apify platform, for all kinds of web data extraction and automation use cases. In Batch mode, an Actor accepts a well-defined JSON input, performs an action which can take anything from a few seconds to a few hours, and optionally produces a well-defined JSON output, datasets with results, or files in key-value store. In Standby mode, an Actor provides a web server which can be used as a website, API, or an MCP server. Actors are written with capital "A". ## How to integrate an Actor? If asked about integration, you help developers integrate Actors into their projects. You adapt to their stack and deliver integrations that are safe, well-documented, and production-ready. The best way to integrate Actors is as follows. In JavaScript/TypeScript projects, use official [JavaScript/TypeScript client](https://docs.apify.com/api/client/js.md): ```bash npm install apify-client ``` In Python projects, use official [Python client library](https://docs.apify.com/api/client/python.md): ```bash pip install apify-client ``` In shell scripts, use [Apify CLI](https://docs.apify.com/cli/docs.md): ````bash # MacOS / Linux curl -fsSL https://apify.com/install-cli.sh | bash # Windows irm https://apify.com/install-cli.ps1 | iex ```bash In AI frameworks, you might use the [Apify MCP server](https://docs.apify.com/platform/integrations/mcp.md). If your project is in a different language, use the [REST API](https://docs.apify.com/api/v2.md). For usage examples, see the [API](#api) section below. For more details, see Apify documentation as [Markdown index](https://docs.apify.com/llms.txt) and [Markdown full-text](https://docs.apify.com/llms-full.txt). # README ## Mercari Japan Price Checker — Sold Comps & Market Stats **One call answers the question every reseller, collector, and proxy buyer keeps asking: "What is this item actually worth on Mercari Japan?"** Instead of dumping thousands of raw listings on you, this Actor samples **sold (completed) listings** for your keywords and returns a ready-to-use price summary — median, average, quartiles, price range, and how fast items sell — plus the individual comps if you want them. ### Why sold comps? Asking prices lie. Sold prices don't. Mercari Japan is the world's largest source of Japanese collectibles — trading cards (Pokémon, One Piece, Yu-Gi-Oh!), anime figures, film cameras, watches, fashion, retro games — but its sold-item data is only browsable in Japanese, one page at a time. This Actor turns it into structured market intelligence: - **Price a collection before you buy or sell** — median and quartiles from real completed sales - **Spot arbitrage** — compare Japan sold prices against eBay/StockX/your local market - **Track liquidity** — `medianDaysToSell` tells you how fast an item actually moves - **Feed your AI agent or spreadsheet** — clean JSON, USD conversion included ### Input example ```json { "keywords": ["ポケモンカード リザードン psa10", "Leica M6"], "itemStatus": "sold_out", "maxItemsPerKeyword": 120, "convertToUsd": true } ```` Japanese keywords give the best coverage. English brand names (Leica, Rolex, Supreme) also work well. ### Output One `price_summary` record per keyword: ```json { "type": "price_summary", "keyword": "ポケモンカード リザードン psa10", "status": "sold_out", "totalListingsFound": 7767, "sampledListings": 120, "priceJpy": { "min": 2030, "p25": 12800, "median": 22750, "p75": 39800, "max": 450000, "average": 31420 }, "priceUsd": { "min": 13.4, "p25": 84.5, "median": 150.2, "p75": 262.7, "max": 2971.0, "average": 207.4 }, "medianDaysToSell": 3, "checkedAt": "2026-07-02T12:00:00+00:00" } ``` Plus (optional) every sampled listing with title, JPY/USD price, condition, photo, timestamps, and a direct `jp.mercari.com` URL. ### Use with AI agents This Actor works out of the box with the [Apify MCP server](https://mcp.apify.com), so Claude, ChatGPT, and other MCP-enabled agents can check Japanese market prices autonomously — for example inside an automated sourcing or repricing workflow. ### Fair use & data - Reads only **publicly visible listing data** — no login, no personal data beyond what any visitor sees - Requests are throttled to keep the load on Mercari negligible - Not affiliated with Mercari, Inc. Data is provided for market research; verify before large transactions ### Roadmap Multi-marketplace comps (Yahoo! Auctions / PayPay Flea Market), price history tracking, and category-level market reports. Feedback via issues is very welcome — tell me what your workflow needs. # Actor input Schema ## `keywords` (type: `array`): One or more search queries. Japanese keywords give the best results (e.g. 'ポケモンカード リザードン psa10'), but English brand names also work (e.g. 'Leica M6'). ## `itemStatus` (type: `string`): 'sold\_out' analyzes completed sales (sold comps — best for price research). 'on\_sale' analyzes current asking prices. 'both' fetches the two sets and reports them separately. ## `maxItemsPerKeyword` (type: `integer`): How many listings to sample per keyword (per status). 120 = one result page. More items = better statistics but higher cost. ## `priceMinJpy` (type: `integer`): Optional lower price bound in Japanese yen. Useful to exclude junk/fake listings from the statistics. ## `priceMaxJpy` (type: `integer`): Optional upper price bound in Japanese yen. ## `includeIndividualItems` (type: `boolean`): If enabled, every sampled listing is also pushed to the dataset (title, price, URL, photo, condition, timestamps). Disable to get only the per-keyword price summary. ## `convertToUsd` (type: `boolean`): Adds USD prices next to JPY using the current exchange rate (open.er-api.com). ## Actor input object example ```json { "keywords": [ "ポケモンカード リザードン psa10" ], "itemStatus": "sold_out", "maxItemsPerKeyword": 120, "includeIndividualItems": true, "convertToUsd": true } ``` # API You can run this Actor programmatically using our API. Below are code examples in JavaScript, Python, and CLI, as well as the OpenAPI specification and MCP server setup. ## JavaScript example ```javascript import { ApifyClient } from 'apify-client'; // Initialize the ApifyClient with your Apify API token // Replace the '' with your token const client = new ApifyClient({ token: '', }); // Prepare Actor input const input = { "keywords": [ "ポケモンカード リザードン psa10" ] }; // Run the Actor and wait for it to finish const run = await client.actor("jpmarketdata/mercari-japan-price-checker").call(input); // Fetch and print Actor results from the run's dataset (if any) console.log('Results from dataset'); console.log(`💾 Check your data here: https://console.apify.com/storage/datasets/${run.defaultDatasetId}`); const { items } = await client.dataset(run.defaultDatasetId).listItems(); items.forEach((item) => { console.dir(item); }); // 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/js/docs ``` ## Python example ```python from apify_client import ApifyClient # Initialize the ApifyClient with your Apify API token # Replace '' with your token. client = ApifyClient("") # Prepare the Actor input run_input = { "keywords": ["ポケモンカード リザードン psa10"] } # Run the Actor and wait for it to finish run = client.actor("jpmarketdata/mercari-japan-price-checker").call(run_input=run_input) # Fetch and print Actor results from the run's dataset (if there are any) print("💾 Check your data here: https://console.apify.com/storage/datasets/" + run["defaultDatasetId"]) for item in client.dataset(run["defaultDatasetId"]).iterate_items(): print(item) # 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/python/docs/quick-start ``` ## CLI example ```bash echo '{ "keywords": [ "ポケモンカード リザードン psa10" ] }' | apify call jpmarketdata/mercari-japan-price-checker --silent --output-dataset ``` ## MCP server setup ```json { "mcpServers": { "apify": { "command": "npx", "args": [ "mcp-remote", "https://mcp.apify.com/?tools=jpmarketdata/mercari-japan-price-checker", "--header", "Authorization: Bearer " ] } } } ``` ## OpenAPI specification ```json { "openapi": "3.0.1", "info": { "title": "Mercari Japan Price Checker — Sold Comps & Market Stats", "description": "Get instant price statistics (median, average, range) from sold listings on Mercari Japan. One call answers: what is this item actually worth in Japan?", "version": "0.1", "x-build-id": "ocl7fjemKw8OBX9Rn" }, "servers": [ { "url": "https://api.apify.com/v2" } ], "paths": { "/acts/jpmarketdata~mercari-japan-price-checker/run-sync-get-dataset-items": { "post": { "operationId": "run-sync-get-dataset-items-jpmarketdata-mercari-japan-price-checker", "x-openai-isConsequential": false, "summary": "Executes an Actor, waits for its completion, and returns Actor's dataset items in response.", "tags": [ "Run Actor" ], "requestBody": { "required": true, "content": { "application/json": { "schema": { "$ref": "#/components/schemas/inputSchema" } } } }, "parameters": [ { "name": "token", "in": "query", "required": true, "schema": { "type": "string" }, "description": "Enter your Apify token here" } ], "responses": { "200": { "description": "OK" } } } }, "/acts/jpmarketdata~mercari-japan-price-checker/runs": { "post": { "operationId": "runs-sync-jpmarketdata-mercari-japan-price-checker", "x-openai-isConsequential": false, "summary": "Executes an Actor and returns information about the initiated run in response.", "tags": [ "Run Actor" ], "requestBody": { "required": true, "content": { "application/json": { "schema": { "$ref": "#/components/schemas/inputSchema" } } } }, "parameters": [ { "name": "token", "in": "query", "required": true, "schema": { "type": "string" }, "description": "Enter your Apify token here" } ], "responses": { "200": { "description": "OK", "content": { "application/json": { "schema": { "$ref": "#/components/schemas/runsResponseSchema" } } } } } } }, "/acts/jpmarketdata~mercari-japan-price-checker/run-sync": { "post": { "operationId": "run-sync-jpmarketdata-mercari-japan-price-checker", "x-openai-isConsequential": false, "summary": "Executes an Actor, waits for completion, and returns the OUTPUT from Key-value store in response.", "tags": [ "Run Actor" ], "requestBody": { "required": true, "content": { "application/json": { "schema": { "$ref": "#/components/schemas/inputSchema" } } } }, "parameters": [ { "name": "token", "in": "query", "required": true, "schema": { "type": "string" }, "description": "Enter your Apify token here" } ], "responses": { "200": { "description": "OK" } } } } }, "components": { "schemas": { "inputSchema": { "type": "object", "required": [ "keywords" ], "properties": { "keywords": { "title": "Search keywords", "type": "array", "description": "One or more search queries. Japanese keywords give the best results (e.g. 'ポケモンカード リザードン psa10'), but English brand names also work (e.g. 'Leica M6').", "items": { "type": "string" } }, "itemStatus": { "title": "Item status", "enum": [ "sold_out", "on_sale", "both" ], "type": "string", "description": "'sold_out' analyzes completed sales (sold comps — best for price research). 'on_sale' analyzes current asking prices. 'both' fetches the two sets and reports them separately.", "default": "sold_out" }, "maxItemsPerKeyword": { "title": "Max items per keyword", "minimum": 30, "maximum": 600, "type": "integer", "description": "How many listings to sample per keyword (per status). 120 = one result page. More items = better statistics but higher cost.", "default": 120 }, "priceMinJpy": { "title": "Min price (JPY)", "minimum": 0, "type": "integer", "description": "Optional lower price bound in Japanese yen. Useful to exclude junk/fake listings from the statistics." }, "priceMaxJpy": { "title": "Max price (JPY)", "minimum": 0, "type": "integer", "description": "Optional upper price bound in Japanese yen." }, "includeIndividualItems": { "title": "Include individual listings", "type": "boolean", "description": "If enabled, every sampled listing is also pushed to the dataset (title, price, URL, photo, condition, timestamps). Disable to get only the per-keyword price summary.", "default": true }, "convertToUsd": { "title": "Convert prices to USD", "type": "boolean", "description": "Adds USD prices next to JPY using the current exchange rate (open.er-api.com).", "default": true } } }, "runsResponseSchema": { "type": "object", "properties": { "data": { "type": "object", "properties": { "id": { "type": "string" }, "actId": { "type": "string" }, "userId": { "type": "string" }, "startedAt": { "type": "string", "format": "date-time", "example": "2025-01-08T00:00:00.000Z" }, "finishedAt": { "type": "string", "format": "date-time", "example": "2025-01-08T00:00:00.000Z" }, "status": { "type": "string", "example": "READY" }, "meta": { "type": "object", "properties": { "origin": { "type": "string", "example": "API" }, "userAgent": { "type": "string" } } }, "stats": { "type": "object", "properties": { "inputBodyLen": { "type": "integer", "example": 2000 }, "rebootCount": { "type": "integer", "example": 0 }, "restartCount": { "type": "integer", "example": 0 }, "resurrectCount": { "type": "integer", "example": 0 }, "computeUnits": { "type": "integer", "example": 0 } } }, "options": { "type": "object", "properties": { "build": { "type": "string", "example": "latest" }, "timeoutSecs": { "type": "integer", "example": 300 }, "memoryMbytes": { "type": "integer", "example": 1024 }, "diskMbytes": { "type": "integer", "example": 2048 } } }, "buildId": { "type": "string" }, "defaultKeyValueStoreId": { "type": "string" }, "defaultDatasetId": { "type": "string" }, "defaultRequestQueueId": { "type": "string" }, "buildNumber": { "type": "string", "example": "1.0.0" }, "containerUrl": { "type": "string" }, "usage": { "type": "object", "properties": { "ACTOR_COMPUTE_UNITS": { "type": "integer", "example": 0 }, "DATASET_READS": { "type": "integer", "example": 0 }, "DATASET_WRITES": { "type": "integer", "example": 0 }, "KEY_VALUE_STORE_READS": { "type": "integer", "example": 0 }, "KEY_VALUE_STORE_WRITES": { "type": "integer", "example": 1 }, "KEY_VALUE_STORE_LISTS": { "type": "integer", "example": 0 }, "REQUEST_QUEUE_READS": { "type": "integer", "example": 0 }, "REQUEST_QUEUE_WRITES": { "type": "integer", "example": 0 }, "DATA_TRANSFER_INTERNAL_GBYTES": { "type": "integer", "example": 0 }, "DATA_TRANSFER_EXTERNAL_GBYTES": { "type": "integer", "example": 0 }, "PROXY_RESIDENTIAL_TRANSFER_GBYTES": { "type": "integer", "example": 0 }, "PROXY_SERPS": { "type": "integer", "example": 0 } } }, "usageTotalUsd": { "type": "number", "example": 0.00005 }, "usageUsd": { "type": "object", "properties": { "ACTOR_COMPUTE_UNITS": { "type": "integer", "example": 0 }, "DATASET_READS": { "type": "integer", "example": 0 }, "DATASET_WRITES": { "type": "integer", "example": 0 }, "KEY_VALUE_STORE_READS": { "type": "integer", "example": 0 }, "KEY_VALUE_STORE_WRITES": { "type": "number", "example": 0.00005 }, "KEY_VALUE_STORE_LISTS": { "type": "integer", "example": 0 }, "REQUEST_QUEUE_READS": { "type": "integer", "example": 0 }, "REQUEST_QUEUE_WRITES": { "type": "integer", "example": 0 }, "DATA_TRANSFER_INTERNAL_GBYTES": { "type": "integer", "example": 0 }, "DATA_TRANSFER_EXTERNAL_GBYTES": { "type": "integer", "example": 0 }, "PROXY_RESIDENTIAL_TRANSFER_GBYTES": { "type": "integer", "example": 0 }, "PROXY_SERPS": { "type": "integer", "example": 0 } } } } } } } } } } ```