MCP server for Electronic Navigational Charts (ENC) data
Enc Charts MCP becomes available to MCP clients through the Enc Charts MCP. MCP server for Electronic Navigational Charts (ENC) data.
An MCP (Model Context Protocol) server for Electronic Navigational Charts (ENC) data, providing programmatic access to NOAA electronic navigational charts with S-57 format parsing capabilities.
This MCP server enables AI assistants to access and analyze electronic navigational charts from NOAA. It automatically downloads, caches, and parses S-57 format chart data, making it available through a standardized API. The server supports coordinate-based chart discovery, feature extraction, and navigation-focused queries.
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Check the linked publisher documentation and your connected client's tool list. Names and availability can vary with the server version and account permissions.
| Tool | What it does |
|---|---|
| get_chart | Retrieve chart features for a specific area by chart ID or coordinates. |
| search_charts | |
| get_chart_metadata | |
| get_object_classes | Get information about S-57 object classes and their representations. |
{
"mcpServers": {
"enc-charts": {
"command": "npx",
"args": ["enc-charts-mcp"],
"transport": {
"type": "stdio"
},
"env": {
"ENC_CACHE_DIR": "~/.enc-charts/cache",
"ENC_CACHE_MAX_SIZE_GB": "20",
"ENC_CACHE_MAX_AGE_DAYS": "14"
}
}
}
}Configuration as documented by the project. Restart the client after saving.
| Variable | Description | Required |
|---|---|---|
| ENC_CACHE_DIR | Filesystem location the server is allowed to use. | Optional |
| ENC_CACHE_MAX_SIZE_GB | Configuration value read at startup. | Optional |
| ENC_CACHE_MAX_AGE_DAYS | Configuration value read at startup. | Optional |
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