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Copy this JSON into your .mcp.json to enable this server
Add to your .mcp.json:
{
"mcpServers": {
"substrate": {
"command": "substrate",
"args": [
"mcp",
"serve"
],
"env": {
"SUBSTRATE_PROJECT_DIR": "${CLAUDE_PROJECT_DIR}"
}
}
}
}Server configuration and connection parameters
substrateCommand-line arguments passed to the server process
Environment variables set when the server starts
SUBSTRATE_PROJECT_DIR=${CLAUDE_PROJECT_DIR}npx claudepluginhub seamoss/substrate --plugin substrate