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RetentionCheck

Official registry Data and databases

Pull churn from Stripe, Postgres, MySQL, or pasted feedback. AI-ranked drivers + fixes.

Source code Website

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

NPM package @retentioncheck/mcp-server
Claude Code 
claude mcp add retentioncheck -e 'ANTHROPIC_API_KEY=<your anthropic_api_key>' -e 'STRIPE_SECRET_KEY=<your stripe_secret_key>' -e 'POSTGRES_URL=<your postgres_url>' -e 'MYSQL_URL=<your mysql_url>' -e 'RETENTIONCHECK_TELEMETRY=<RETENTIONCHECK_TELEMETRY>' -- npx -y @retentioncheck/mcp-server@0.6.2
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "retentioncheck": {
            "command": "npx",
            "args": [
                "-y",
                "@retentioncheck/mcp-server@0.6.2"
            ],
            "env": {
                "ANTHROPIC_API_KEY": "<your anthropic_api_key>",
                "STRIPE_SECRET_KEY": "<your stripe_secret_key>",
                "POSTGRES_URL": "<your postgres_url>",
                "MYSQL_URL": "<your mysql_url>",
                "RETENTIONCHECK_TELEMETRY": "<RETENTIONCHECK_TELEMETRY>"
            }
        }
    }
}

Environment variables

  • ANTHROPIC_API_KEY secret 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 secret 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 secret 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 secret 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.

Frequently asked questions

What is RetentionCheck?

Pull churn from Stripe, Postgres, MySQL, or pasted feedback. AI-ranked drivers + fixes.

How do I install RetentionCheck?

It runs on your machine. In Claude Code: claude mcp add retentioncheck -e 'ANTHROPIC_API_KEY=<your anthropic_api_key>' -e 'STRIPE_SECRET_KEY=<your stripe_secret_key>' -e 'POSTGRES_URL=<your postgres_url>' -e 'MYSQL_URL=<your mysql_url>' -e 'RETENTIONCHECK_TELEMETRY=<RETENTIONCHECK_TELEMETRY>' -- npx -y @retentioncheck/mcp-server@0.6.2. For other clients, paste the JSON configuration from this page into their MCP settings.

Does RetentionCheck need an API key?

Yes. It expects ANTHROPIC_API_KEY, STRIPE_SECRET_KEY, POSTGRES_URL, MYSQL_URL, which you set in its configuration.

Is RetentionCheck open source?

Its code is public on GitHub, but the repository does not declare a standard license.

Who maintains RetentionCheck?

It is published by brianfofficial. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.