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{
  "mcpServers": {
    "retentioncheck-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "@retentioncheck/[email protected]"
      ],
      "env": {
        "ANTHROPIC_API_KEY": "${ANTHROPIC_API_KEY}",
        "STRIPE_SECRET_KEY": "${STRIPE_SECRET_KEY}",
        "POSTGRES_URL": "${POSTGRES_URL}",
        "MYSQL_URL": "${MYSQL_URL}"
      }
    }
  }
}

claude mcp add retentioncheck-mcp-server -e "ANTHROPIC_API_KEY=${ANTHROPIC_API_KEY}" -e "STRIPE_SECRET_KEY=${STRIPE_SECRET_KEY}" -e "POSTGRES_URL=${POSTGRES_URL}" -e "MYSQL_URL=${MYSQL_URL}" -- npx -y @retentioncheck/[email protected]

[mcp_servers.retentioncheck-mcp-server]
command = "npx"
args = ["-y", "@retentioncheck/[email protected]"]
env = { "ANTHROPIC_API_KEY" = "${ANTHROPIC_API_KEY}", "STRIPE_SECRET_KEY" = "${STRIPE_SECRET_KEY}", "POSTGRES_URL" = "${POSTGRES_URL}", "MYSQL_URL" = "${MYSQL_URL}" }

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "retentioncheck-mcp-server": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "@retentioncheck/[email protected]"
      ],
      "enabled": true,
      "environment": {
        "ANTHROPIC_API_KEY": "{env:ANTHROPIC_API_KEY}",
        "STRIPE_SECRET_KEY": "{env:STRIPE_SECRET_KEY}",
        "POSTGRES_URL": "{env:POSTGRES_URL}",
        "MYSQL_URL": "{env:MYSQL_URL}"
      }
    }
  }
}

{
  "mcpServers": {
    "retentioncheck-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "@retentioncheck/[email protected]"
      ],
      "env": {
        "ANTHROPIC_API_KEY": "${ANTHROPIC_API_KEY}",
        "STRIPE_SECRET_KEY": "${STRIPE_SECRET_KEY}",
        "POSTGRES_URL": "${POSTGRES_URL}",
        "MYSQL_URL": "${MYSQL_URL}"
      }
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=retentioncheck-mcp-server&config=eyJjb21tYW5kIjoibnB4IiwiYXJncyI6WyIteSIsIkByZXRlbnRpb25jaGVjay9tY3Atc2VydmVyQDAuNi4yIl0sImVudiI6eyJBTlRIUk9QSUNfQVBJX0tFWSI6IiR7QU5USFJPUElDX0FQSV9LRVl9IiwiU1RSSVBFX1NFQ1JFVF9LRVkiOiIke1NUUklQRV9TRUNSRVRfS0VZfSIsIlBPU1RHUkVTX1VSTCI6IiR7UE9TVEdSRVNfVVJMfSIsIk1ZU1FMX1VSTCI6IiR7TVlTUUxfVVJMfSJ9fQ%3D%3D"
}

{
  "servers": {
    "retentioncheck-mcp-server": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@retentioncheck/[email protected]"
      ],
      "env": {
        "ANTHROPIC_API_KEY": "${ANTHROPIC_API_KEY}",
        "STRIPE_SECRET_KEY": "${STRIPE_SECRET_KEY}",
        "POSTGRES_URL": "${POSTGRES_URL}",
        "MYSQL_URL": "${MYSQL_URL}"
      }
    }
  }
}

{
  "mcpServers": {
    "retentioncheck-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "@retentioncheck/[email protected]"
      ],
      "env": {
        "ANTHROPIC_API_KEY": "${ANTHROPIC_API_KEY}",
        "STRIPE_SECRET_KEY": "${STRIPE_SECRET_KEY}",
        "POSTGRES_URL": "${POSTGRES_URL}",
        "MYSQL_URL": "${MYSQL_URL}"
      }
    }
  }
}

extensions:
  "retentioncheck-mcp-server":
    enabled: true
    name: "retentioncheck-mcp-server"
    type: stdio
    cmd: "npx"
    args:
      - "-y"
      - "@retentioncheck/[email protected]"
    envs:
      "ANTHROPIC_API_KEY": "${ANTHROPIC_API_KEY}"
      "STRIPE_SECRET_KEY": "${STRIPE_SECRET_KEY}"
      "POSTGRES_URL": "${POSTGRES_URL}"
      "MYSQL_URL": "${MYSQL_URL}"
    timeout: 300

Placeholders to fill from your own secret store: ${ANTHROPIC_API_KEY}, ${STRIPE_SECRET_KEY}, ${POSTGRES_URL}, ${MYSQL_URL}. The registry never accepts secret values.

This is a local package: the command runs on your machine.

Quality – / 100not scored

Not scored: fewer than three checks apply, usually because no remote answered a credential-free probe or the server is a local package.

protocoln/a · weight 25

n/a
protocol.modern, protocol.stateless, protocol.transport, protocol.list_ttlno remote answered a protocol handshake (not probed yet, unreachable, or local-only)

authorizationn/a · weight 15

n/a
auth.prm, auth.as_metadata, auth.cimdno remote uses OAuth
n/a
auth.secret_in_urlno templated URL

tool hygienen/a · weight 30

n/a
tools.descriptions, tools.description_length, tools.schemas, tools.annotations, tools.directory_hints, tools.token_cost, tools.api_dumptool list unknown (behind auth, not probed, or empty)

stabilityn/a · weight 15

n/a
stability.changes, stability.rug_pulltool list unknown

dependencies67 · weight 15

pass
deps.known_vulnsno known advisory in 125 resolved packages
fail
deps.mcp_sdk_version@modelcontextprotocol/sdk 1.30.1 has 1 known advisory (GHSA-6qxp-vccf-f47h); update @modelcontextprotocol/sdk to 1.31.0 or later
pass
deps.resolvable@retentioncheck/[email protected] resolved: 125 packages

Tool list unknown · checked 2026-10-20 17:34 UTC

Tool changes

No tool definition changes recorded. A server's first observation is its baseline; later probes record what changes.

Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed. How it is computed.

Trust 86 / 100

provenance90

livenessn/a

freshness65

hygiene100

+repository +namespace-matches-repo +website ~liveness-unmeasured ~updated-168d-ago

Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed. How it is computed.

Dependencies

@retentioncheck/[email protected] npm124 dependencies, resolved · MCP SDK @modelcontextprotocol/sdk 1.30.1 · advisories checked 2026-10-19

advisory	severity	package	fixed in
GHSA-6qxp-vccf-f47hMCP TypeScript SDK: OAuth client could send credentials to an authorization server chosen by the MCP server	high	`@modelcontextprotocol/[email protected]`MCP SDK, direct	fixed in `1.31.0`

Dependency graphs from deps.dev; advisories from OSV.dev, including the GitHub Advisory Database and the PyPI Advisory Database; all CC BY 4.0. The graph is what a clean install of this version resolves today; nothing was installed or run. How it is checked.

Endpoints

package	registry	version	runtime	secrets
`@retentioncheck/mcp-server`	npm	0.6.2	–	`ANTHROPIC_API_KEY`, `STRIPE_SECRET_KEY`, `POSTGRES_URL`, `MYSQL_URL`

Tools (0)

No tools observed. Local packages are never executed by the registry.

Schemas: list_tools.

Similar MCP servers

Official server.json

{
  "name": "io.github.brianfofficial/retentioncheck-mcp-server",
  "_meta": {
    "io.modelcontextprotocol.registry/publisher-provided": {
      "tags": [
        "churn",
        "retention",
        "saas",
        "analytics",
        "ai",
        "cancellation-feedback",
        "stripe",
        "postgres",
        "mysql",
        "subscription-analytics"
      ],
      "tool": "retentioncheck-mcp-server"
    }
  },
  "title": "RetentionCheck",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "version": "0.6.2",
  "packages": [
    {
      "version": "0.6.2",
      "transport": {
        "type": "stdio"
      },
      "identifier": "@retentioncheck/mcp-server",
      "registryType": "npm",
      "registryBaseUrl": "https://registry.npmjs.org",
      "environmentVariables": [
        {
          "name": "ANTHROPIC_API_KEY",
          "isSecret": true,
          "description": "Anthropic API key for running churn analysis (required for analyze_churn, analyze_stripe_churn, and analyze_sql_churn; get_example_analysis works without it)."
        },
        {
          "name": "STRIPE_SECRET_KEY",
          "isSecret": true,
          "description": "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."
        },
        {
          "name": "POSTGRES_URL",
          "isSecret": true,
          "description": "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."
        },
        {
          "name": "MYSQL_URL",
          "isSecret": true,
          "description": "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."
        },
        {
          "name": "RETENTIONCHECK_TELEMETRY",
          "description": "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."
        }
      ]
    }
  ],
  "repository": {
    "url": "https://github.com/brianfofficial/retentioncheck-v2",
    "source": "github",
    "subfolder": "packages/mcp-server"
  },
  "websiteUrl": "https://retentioncheck.com/integrations",
  "description": "Pull churn from Stripe, Postgres, MySQL, or pasted feedback. AI-ranked drivers + fixes."
}