Awesome MCP › Other MCP Servers

GongRzhe/JSON-MCP-Server

⭐ 90 JavaScript added to this list on 2025-05-14 repository created 2024-12-24

JSON MCP Server lets a model query and manipulate JSON data without loading the whole document into its context. Its query tool takes a URL pointing at a JSON source plus a JSONPath expression, with extended operations layered on top of standard JSONPath: array slicing in the usual notation including negative indices, and sorting by a field in ascending or descending order. A separate filter tool takes a base JSONPath expression and a condition, returning only the matching elements. The practical value is in the combination — pointing at a large JSON API response and retrieving the five cheapest items sorted by price means the model receives five records instead of ten thousand, which is the difference between a usable answer and an exhausted context window. It is a JavaScript project published on npm as @gongrzhe/server-json-mcp and run through npx, with the README recommending a pinned version. Because it fetches from a URL rather than a local file, it doubles as a way to query any public JSON endpoint. The GitHub repository is archived and no longer maintained. The audience is people whose assistants work against JSON APIs and need server-side filtering, best treated as a small reference implementation given its status.

https://github.com/GongRzhe/JSON-MCP-Server

mcpjsonjsonpathjavascriptfilteringdata-queryarchived