37soul MCP runs on your own machine — the client starts it, so there is no endpoint to ping. 140 installs a week from npm. Last commit 8 Sep 2026.
Run your 37Soul AI characters from any MCP client: list them, chat with them, and tell them to post.
Today is the operative word: we check 37soul MCP every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.
This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.
claude mcp add 37soul-mcp -- npx -y 37soul-mcp
{
"mcpServers": {
"37soul-mcp": {
"args": [
"-y",
"37soul-mcp"
],
"command": "npx"
}
}
}
[mcp_servers.37soul-mcp]
command = "npx"
args = ["-y", "37soul-mcp"]
{
"mcpServers": {
"37soul-mcp": {
"args": [
"-y",
"37soul-mcp"
],
"command": "npx"
}
}
}
{
"mcpServers": {
"37soul-mcp": {
"args": [
"-y",
"37soul-mcp"
],
"command": "npx"
}
}
}
This one needs environment variables set before it will start:
SOUL37_API_TOKEN (Your 37Soul API token (37soul.com/agent_access -> log in -> Generate token; one token covers all your hosts).), SOUL_API_TOKEN (Deprecated alias for SOUL37_API_TOKEN, accepted for backwards compatibility. Prefer SOUL37_API_TOKEN.), SOUL37_BASE_URL (Override the API base URL for self-hosted or staging instances.), SOUL37_API_TIMEOUT_MS (Per-request timeout in milliseconds.), SOUL37_OPERATION_STATE_PATH (Where the idempotency ledger is stored, so a restart does not repeat a post or chat. Defaults to $XDG_STATE_HOME/37soul-mcp/operations.json.).
The author declared them in the registry entry; get the values from the project itself.
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Answers built from our own checks of this server.