JSer

You can run the JSer.info MCP server locally or connect to a remote MCP endpoint to access JSer.info’s MCP tools and data. This server exposes a set of tools that let you search items and posts, derive product names from URLs, and explore JSer weeks and items across time, enabling you to build rich integrations and tooling.

How to use

Connect to a remote MCP server or run the MCP locally to access the JSer.info data and toolset. After you connect, you can use the available tools to search, fetch product names, and retrieve weekly data.

Remote usage is recommended when you want to rely on an always-up-to-date MCP endpoint. Use the following command to add the remote MCP to your editor or client, then connect through your MCP settings. You can also configure the connection directly in your settings file.

Local usage is great for development or offline scenarios. Start the MCP server locally and then connect your MCP client to the local endpoint.

Commands shown here come from the MCP usage examples. They enable adding a remote MCP server and starting a local MCP server.

After connecting, you will have access to the following tools to perform searches and fetch data.

How to install

Prerequisites: you need Node.js and npm (or a compatible runtime) installed on your system.

Option A: Connect to the remote MCP server (recommended) by adding it to your editor or environment.

code --add-mcp '{"name":"jser-info-mcp","url":"https://mcp.jser.info/mcp"}'

Alternatively, add the MCP server URL in your editor settings file under the mcp.servers section.

"mcp": {
  "servers": {
    "jser-info-mcp": {
      "url": "https://mcp.jser.info/mcp"
    }
  }
}

Option B: Run the MCP server locally and connect to it from your editor or client.

npx @jser/mcp

Notes on usage and connectivity

If you choose the remote option, you’ll connect to the central JSer.info MCP endpoint at https://mcp.jser.info/mcp. If you choose the local option, the server will run on your machine and you can connect to http://localhost:14561/mcp from your MCP client.

Additional guidance

After you connect, you will have access to these tools and endpoints to query data: item search, post search, product name extraction, and weekly data retrieval.

Available tools

jser_search_items

Search items by title, description, URL, and tags; uses multiple keywords with OR semantics.

jser_search_posts

Search posts by title, description, URL, and tags; supports relevance/date sorting.

jser_product_name

Fetch product name and release notes probability from a URL.

jser_week

Retrieve a JSer week by its number.

jser_weeks

Retrieve all JSer weeks with their items and posts.

jser_weeks_between

Get JSer weeks between two dates.

jser_week_with_item_url

Find the JSer week that contains a specific item URL.

jser_item_with_item_url

Get a JSer item by its URL.