What data does Epsg Mcp Server use?
The server uses a local database, enabling offline operation with no external API needed.
@shuji-bonji
基本信息
An MCP server that provides knowledge about Coordinate Reference Systems (CRS).
使用下面的配置,将此服务器添加到你的 MCP 客户端。
{
"mcpServers": {
"epsg": {
"command": "npx",
"args": [
"@shuji-bonji/epsg-mcp"
]
}
}
}Search EPSG Coordinate Reference Systems (CRS) by keyword. Searchable by EPSG code, name, region name, or prefecture name. Covers Japanese JGD2011 CRS family, global WGS84, Web Mercator, and more.
Get detailed information for a specific EPSG code. Includes datum, projection method, area of use, accuracy characteristics, and intended use cases.
Get available CRS list for a region with purpose-based recommendations. Japan includes Plane Rectangular CS (Zones I-XIX), Global includes WGS84 and UTM zones.
Recommend the optimal CRS based on purpose and location. Supports web mapping, distance/area calculation, surveying, navigation, data exchange, etc. Full support for Japan Plane Rectangular CS (Zones I-XIX) including multi-zone regions like Hokkaido and Okinawa.
Validate whether a CRS is appropriate for a specific purpose and location. Detects deprecated CRS usage, area/distance calculation distortion issues, inappropriate zone selection for surveying, and provides improvement suggestions.
Suggest transformation paths between two CRS. Covers Tokyo Datum to JGD2011, WGS84 to Plane Rectangular CS, etc. Searches multi-step paths, provides accuracy info, and warns about cumulative errors.
Compare two CRS from various perspectives. Compares datum, projection method, area of use, accuracy, distortion characteristics, compatibility, and use case suitability. Explains which is better suited for specific purposes.
Get CRS best practices for specific topics. Covers surveying in Japan, web mapping, data exchange, coordinate storage, mobile GPS, cross-border data, historical data, GIS integration, precision requirements, and projection selection. Provides recommended practices, common mistakes, and reference materials.
Troubleshoot CRS-related problems. Diagnoses coordinate shifts (cm, m, km scale), area/distance calculation errors, data not displaying, and transformation errors. Identifies causes, provides diagnostic steps, and solutions.
An MCP server that provides specialized knowledge and decision support for Coordinate Reference Systems (CRS) worldwide. It uses a 3-layer fallback: country packs, automatic UTM zone calculation, and safe defaults. Coordinate transformation execution is delegated to another server, so this server focuses on knowledge provision and decision support.
Install via npm: npm install @shuji-bonji/epsg-mcp. Run directly: npx @shuji-bonji/epsg-mcp. Configure in Claude Desktop by adding to claude_desktop_config.json with command npx and args ["@shuji-bonji/epsg-mcp"]. Optionally set environment variables EPSG_PACKS and EPSG_LANG for country packs and language.
The server uses a local database, enabling offline operation with no external API needed.
Available packs: jp (Japan), us (United States), uk/gb (United Kingdom). By default only Japan is loaded. Set the `EPSG_PACKS` environment variable to a comma-separated list (e.g., "jp,us,uk") to enable additional packs.
No, coordinate transformation execution is delegated to mcp-server-proj. This server focuses on knowledge provision, decision support, and transformation routing.
Node.js 18 or higher is required.
Set the `EPSG_LANG` environment variable to "ja" for Japanese output; English is the default.
MCP Toolbox for Databases is an open source MCP server for databases.

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