valv

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

• Connection: Runs on your computer
• Transport: stdio
• Category: Databases & datasets
• You need to fill in: DATABASE_URL

Install

Pick the AI app you use, then copy the settings.

You need

• npmNode.js installed (for the npx command)

Which app do you use?

{
  "mcpServers": {
    "valv": {
      "command": "npx",
      "args": [
        "-y",
        "@valv/mcp"
      ],
      "env": {
        "DATABASE_URL": "your-value",
        "VALV_PROVIDER": "your-value",
        "VALV_DATABASE": "your-value",
        "VALV_TABLES": "your-value",
        "VALV_EXCLUDE": "your-value",
        "VALV_POLICY_FILE": "your-value",
        "VALV_CONTEXT": "your-value",
        "VALV_HTTP_PORT": "your-value"
      }
    }
  }
}

claude mcp add valv --env DATABASE_URL=your-value --env VALV_PROVIDER=your-value --env VALV_DATABASE=your-value --env VALV_TABLES=your-value --env VALV_EXCLUDE=your-value --env VALV_POLICY_FILE=your-value --env VALV_CONTEXT=your-value --env VALV_HTTP_PORT=your-value -- npx -y @valv/mcp

{
  "mcpServers": {
    "valv": {
      "command": "npx",
      "args": [
        "-y",
        "@valv/mcp"
      ],
      "env": {
        "DATABASE_URL": "your-value",
        "VALV_PROVIDER": "your-value",
        "VALV_DATABASE": "your-value",
        "VALV_TABLES": "your-value",
        "VALV_EXCLUDE": "your-value",
        "VALV_POLICY_FILE": "your-value",
        "VALV_CONTEXT": "your-value",
        "VALV_HTTP_PORT": "your-value"
      }
    }
  }
}

{
  "servers": {
    "valv": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@valv/mcp"
      ],
      "env": {
        "DATABASE_URL": "your-value",
        "VALV_PROVIDER": "your-value",
        "VALV_DATABASE": "your-value",
        "VALV_TABLES": "your-value",
        "VALV_EXCLUDE": "your-value",
        "VALV_POLICY_FILE": "your-value",
        "VALV_CONTEXT": "your-value",
        "VALV_HTTP_PORT": "your-value"
      }
    }
  }
}

Your choice stays on this device in a cookie; no account needed.

Values you fill in

• DATABASE_URL secret required env
  Database connection string. PostgreSQL, MySQL, SQLite, CockroachDB, or a ClickHouse HTTP URL.
• VALV_PROVIDER env
  Datasource provider: postgresql, mysql, sqlite, or clickhouse. Inferred from DATABASE_URL when omitted.
• VALV_DATABASE env
  Database name. Required for ClickHouse, whose URL does not carry one.
• VALV_TABLES env
  Comma-separated allow-list of tables. When set, only these are exposed to the agent.
• VALV_EXCLUDE env
  Comma-separated deny-list of tables, applied after the allow-list.
• VALV_POLICY_FILE env
  Path to a policy module that takes full control of access. Without it, the server is read-only across all tables.
• VALV_CONTEXT env
  JSON context object the policy reads, e.g. {"tenant":{"id":"acme"}}.
• VALV_HTTP_PORT env
  Serve over Streamable HTTP on this port instead of stdio.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Runs on your computer; the tool list appears in your AI app after you install it.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 7, 2026

• ✓ Pass

  Maker matches the repo

  The registry name was verified against the domain valv.sh (the registry checks domain ownership)

• … Not checked yet

  Still maintained

  We have not read this repo from GitHub yet

• … Not checked yet

  Has a licence

  We have not read this repo from GitHub yet

• – Not applicable

  Endpoint responds

  This one runs on your computer; there is no internet endpoint

• – Not applicable

  Sign-in with OAuth

  Runs on your computer and uses local settings instead

• … Not checked yet

  No hidden instructions in tool descriptions

  Runs on your computer; we can only read tool lists from internet endpoints

Compared with others in Databases & datasetsi

• More stars than 0% of the other 954 servers in this category
• Published to the registry more recently than 21% of the other 954 servers in this category
• Basic checks equal to or better than 100% of the other 954 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Alternatives

Servers in the same category from other makers, sorted by stars.

Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

README from the maker

npx @valv/mcp init

{

"env": { "DATABASE_URL": "http://localhost:8123", "VALV_DATABASE": "analytics" }

"env": { "DATABASE_URL": "mongodb://localhost:27017", "VALV_DATABASE": "analytics" }

// valv.policy.cjs