RetentionCheck runs on your own machine — the client starts it, so there is no endpoint to ping. 32 installs a week from npm.
Pull churn from Stripe, Postgres, MySQL, or pasted feedback. AI-ranked drivers + fixes.
The linked repository no longer exists on GitHub — it was deleted or made private.
Quiet is not dead — but it is worth knowing when it wakes up, or when someone else takes it over. We watch the repository and tell you either way.
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 retentioncheck-mcp-server -- npx -y @retentioncheck/mcp-server
{
"mcpServers": {
"retentioncheck-mcp-server": {
"args": [
"-y",
"@retentioncheck/mcp-server"
],
"command": "npx"
}
}
}
[mcp_servers.retentioncheck-mcp-server]
command = "npx"
args = ["-y", "@retentioncheck/mcp-server"]
{
"mcpServers": {
"retentioncheck-mcp-server": {
"args": [
"-y",
"@retentioncheck/mcp-server"
],
"command": "npx"
}
}
}
{
"mcpServers": {
"retentioncheck-mcp-server": {
"args": [
"-y",
"@retentioncheck/mcp-server"
],
"command": "npx"
}
}
}
This one needs environment variables set before it will start:
ANTHROPIC_API_KEY (Anthropic API key for running churn analysis (required for analyze_churn, analyze_stripe_churn, and analyze_sql_churn; get_example_analysis works without it).), STRIPE_SECRET_KEY (Stripe API key for analyze_stripe_churn. Use a RESTRICTED (read-only) key with these permissions: Subscriptions Read, Customers Read, Prices Read. Create one at https://dashboard.stripe.com/apikeys/create. Optional — only required for the analyze_stripe_churn tool.), POSTGRES_URL (Postgres connection string for analyze_sql_churn when dialect='postgres'. Format: postgres://user:pass@host:5432/db?sslmode=require. Use a READ-ONLY user — see retentioncheck.com/integrations for the exact GRANT SQL. Optional — only required for the analyze_sql_churn tool with postgres dialect.), MYSQL_URL (MySQL connection string for analyze_sql_churn when dialect='mysql'. Format: mysql://user:pass@host:3306/db?ssl=true. Use a READ-ONLY user — see retentioncheck.com/integrations for the exact GRANT SQL. Optional — only required for the analyze_sql_churn tool with mysql dialect.), RETENTIONCHECK_TELEMETRY (Set to 0 to opt out of anonymous usage telemetry. Telemetry tracks tool invocations and aggregate counts — never the feedback text, financial values, or any PII.).
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.