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Connect Runs on your machine
claude mcp add cosmos-mcp -e COSMOS_TOKEN=<COSMOS_TOKEN> -- npx -y @polarity-lab/[email protected]
{
"mcpServers": {
"cosmos-mcp": {
"command": "npx",
"args": [
"-y",
"@polarity-lab/[email protected]"
],
"env": {
"COSMOS_TOKEN": "<COSMOS_TOKEN>"
}
}
}
}
{
"mcpServers": {
"cosmos-mcp": {
"command": "npx",
"args": [
"-y",
"@polarity-lab/[email protected]"
],
"env": {
"COSMOS_TOKEN": "<COSMOS_TOKEN>"
}
}
}
}
{
"servers": {
"cosmos-mcp": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@polarity-lab/[email protected]"
],
"env": {
"COSMOS_TOKEN": "<COSMOS_TOKEN>"
}
}
}
}
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 |
|---|---|
COSMOS_TOKENOptional, secret | pmk_ key from https://cosmos.polarity-lab.com/connectors. Optional on macOS once the system keychain is provisioned via `npx -y @polarity-lab/cosmos-mcp provision pmk_...`. |
Details
| Package | @polarity-lab/[email protected] (NPM, stdio) |
| First published | 19 May 2026 |
| Last updated | 19 May 2026 |
| Registry name | io.github.teampolarity/cosmos-mcp |
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