About 23andme Raw Data File Lookup
A proof-of-concept MCP server for people querying 23andMe raw genotype files by RSID. It returns the matching genotype through one tool, or `--` when data is missing.
Key features
- 01Look up genotypes by RSID
- 02Parse TSV files with header comments
- 03Return `--` for missing data
Use cases
- 01Check the genotype for a specific SNP
- 02Find an RSID entry in a raw data file
MCP support
The MCP server accepts requests over stdin/stdout and exposes the `get_genotype_by_rsid` tool for genotype lookups.
Configuration
Local server config is the same for every client. Copy it into your client’s MCP config file.
We haven’t collected a package or remote endpoint for this server. Follow the instructions in the project README.
Tools
Local servers expose tools only once running on your machine, and the maintainer has not provided a tool list.
Details
From the project README23andMe Raw Data MCP Server
A minimal proof-of-concept Model Context Protocol (MCP) server for querying 23andMe raw genotype files by RSID.
Requirements
- Node.js v18+
- 23andMe raw data file (TSV format, with header comments)
Installation
git clone https://github.com/yourusername/23andme-mcp-poc.git
cd 23andme-mcp
npm install
Usage
npm start sample-data.txt
or
node src/index.js sample-data.txt
This will parse sample-data.txt and wait for MCP requests over stdin/stdout.
MCP Client Setup
Example of mcp.json:
{
"mcpServers": {
"23andMe Genotype Lookup": {
"command": "node",
"args": ["~/src/index.js", "~/sample-data.txt"]
}
}
}
Tool Definition
get_genotype_by_rsid
- Input:
{ "rsid": "rs3131972" } - Output:
AG
Missing data returns: --
License
MIT
Comments
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