Measure the matches your exact join is silently dropping, and get the rule that fixes each.
Connect Runs on your machine
claude mcp add shadowjoin -e SHADOWJOIN_CONFIG=<SHADOWJOIN_CONFIG> -- npx -y [email protected]{
"mcpServers": {
"shadowjoin": {
"command": "npx",
"args": [
"-y",
"[email protected]"
],
"env": {
"SHADOWJOIN_CONFIG": "<SHADOWJOIN_CONFIG>"
}
}
}
}{
"mcpServers": {
"shadowjoin": {
"command": "npx",
"args": [
"-y",
"[email protected]"
],
"env": {
"SHADOWJOIN_CONFIG": "<SHADOWJOIN_CONFIG>"
}
}
}
}{
"servers": {
"shadowjoin": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"[email protected]"
],
"env": {
"SHADOWJOIN_CONFIG": "<SHADOWJOIN_CONFIG>"
}
}
}
}Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.
Tools
This server runs locally, so its tools are listed by your MCP client once it starts.
Environment variables
| Name | Description |
|---|---|
SHADOWJOIN_CONFIGRequired | Absolute path to shadowjoin.config.json, which names your data sources. Connection strings live here and never pass through a tool call. |
Details
| Package | [email protected] (NPM, stdio) |
| First published | 12 Nov 2026 |
| Last updated | 12 Nov 2026 |
| Registry name | io.github.harsh-chandak/shadowjoin |
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