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Midplane

L0· runs locally

Safe-by-default SQL guardrails for AI agents: AST-checked queries, per-table policy, audit log.

v0.20.0 · active · repository · website · descriptor JSON · versions

Runs on your machine: something must execute the package.Only local packages are published (npm, PyPI, OCI, …). The registry never executes them, so tools are unknown until you run it.
Quality–not scored
Trust88of 100
Packages2
Tools seen0

Connect

8 clients · secrets stay placeholders
{
  "mcpServers": {
    "midplane": {
      "command": "npx",
      "args": [
        "-y",
        "[email protected]",
        "server",
        "--stdio"
      ],
      "env": {
        "DATABASE_URL": "${DATABASE_URL}",
        "MIDPLANE_TELEMETRY": "1"
      }
    }
  }
}
claude mcp add midplane -e "DATABASE_URL=${DATABASE_URL}" -e "MIDPLANE_TELEMETRY=1" -- npx -y [email protected] server --stdio
[mcp_servers.midplane]
command = "npx"
args = ["-y", "[email protected]", "server", "--stdio"]
env = { "DATABASE_URL" = "${DATABASE_URL}", "MIDPLANE_TELEMETRY" = "1" }
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "midplane": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "[email protected]",
        "server",
        "--stdio"
      ],
      "enabled": true,
      "environment": {
        "DATABASE_URL": "{env:DATABASE_URL}",
        "MIDPLANE_TELEMETRY": "1"
      }
    }
  }
}
{
  "mcpServers": {
    "midplane": {
      "command": "npx",
      "args": [
        "-y",
        "[email protected]",
        "server",
        "--stdio"
      ],
      "env": {
        "DATABASE_URL": "${DATABASE_URL}",
        "MIDPLANE_TELEMETRY": "1"
      }
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=midplane&config=eyJjb21tYW5kIjoibnB4IiwiYXJncyI6WyIteSIsIm1pZHBsYW5lQDAuMjAuMCIsInNlcnZlciIsIi0tc3RkaW8iXSwiZW52Ijp7IkRBVEFCQVNFX1VSTCI6IiR7REFUQUJBU0VfVVJMfSIsIk1JRFBMQU5FX1RFTEVNRVRSWSI6IjEifX0%3D"
}
{
  "servers": {
    "midplane": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "[email protected]",
        "server",
        "--stdio"
      ],
      "env": {
        "DATABASE_URL": "${DATABASE_URL}",
        "MIDPLANE_TELEMETRY": "1"
      }
    }
  }
}
{
  "mcpServers": {
    "midplane": {
      "command": "npx",
      "args": [
        "-y",
        "[email protected]",
        "server",
        "--stdio"
      ],
      "env": {
        "DATABASE_URL": "${DATABASE_URL}",
        "MIDPLANE_TELEMETRY": "1"
      }
    }
  }
}
extensions:
  "midplane":
    enabled: true
    name: "midplane"
    type: stdio
    cmd: "npx"
    args:
      - "-y"
      - "[email protected]"
      - "server"
      - "--stdio"
    envs:
      "DATABASE_URL": "${DATABASE_URL}"
      "MIDPLANE_TELEMETRY": "1"
    timeout: 300

Placeholders to fill from your own secret store: ${DATABASE_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 135 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[email protected] resolved: 135 packages

Tool list unknown · checked 2026-10-20 00:54 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 88 / 100

provenance85
livenessn/a
freshness85
hygiene95

+repository +dns-namespace +website ~liveness-unmeasured ~updated-56d-ago -unpinned-packages(1)

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

Dependencies

[email protected] npm134 dependencies, resolved · MCP SDK @modelcontextprotocol/sdk 1.30.1 · advisories checked 2026-10-19

advisoryseveritypackagefixed in
GHSA-6qxp-vccf-f47hMCP TypeScript SDK: OAuth client could send credentials to an authorization server chosen by the MCP serverhigh@modelcontextprotocol/[email protected]MCP SDK, directfixed 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

packageregistryversionruntimesecrets
midplanenpm0.20.0npxDATABASE_URL
docker.io/midplane/midplane:0.20.0ociunpinneddockerDATABASE_URL

Tools (0)

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

Schemas: list_tools.

Similar MCP servers

Official server.json
{
  "name": "ai.midplane/midplane",
  "title": "Midplane",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "version": "0.20.0",
  "packages": [
    {
      "version": "0.20.0",
      "transport": {
        "type": "stdio"
      },
      "identifier": "midplane",
      "runtimeHint": "npx",
      "registryType": "npm",
      "registryBaseUrl": "https://registry.npmjs.org",
      "packageArguments": [
        {
          "type": "positional",
          "value": "server",
          "valueHint": "subcommand"
        },
        {
          "name": "--stdio",
          "type": "named"
        }
      ],
      "environmentVariables": [
        {
          "name": "DATABASE_URL",
          "format": "string",
          "isSecret": true,
          "isRequired": true,
          "description": "Postgres connection string the agent's queries run against. Give it a least-privilege role: Midplane constrains what SQL is allowed, it does not widen or narrow what the role itself can reach."
        },
        {
          "name": "MIDPLANE_POLICY_FILE",
          "format": "filepath",
          "description": "Path to a policy YAML granting per-table read/read_write access, tenant scoping, and column masking. Omit for the safe default: reads allowed, writes and DDL denied. Generate one with `npx midplane init`."
        },
        {
          "name": "DB_PATH",
          "format": "filepath",
          "description": "Where the local SQLite audit log is written. Defaults to ~/.midplane/audit.db; read it back with `midplane audit denies`."
        },
        {
          "name": "MIDPLANE_TELEMETRY",
          "choices": [
            "1",
            "0",
            "debug"
          ],
          "default": "1",
          "description": "Set to 0 to disable anonymous usage telemetry (DO_NOT_TRACK=1 also works). Never includes SQL, table or column names, or identifiers."
        }
      ]
    },
    {
      "transport": {
        "url": "http://localhost:8080/mcp",
        "type": "streamable-http"
      },
      "identifier": "docker.io/midplane/midplane:0.20.0",
      "runtimeHint": "docker",
      "registryType": "oci",
      "environmentVariables": [
        {
          "name": "DATABASE_URL",
          "format": "string",
          "isSecret": true,
          "isRequired": true,
          "description": "Postgres connection string the agent's queries run against. Pass it with --env-file, never with an inline -e: a DSN on the docker command line leaks the password to `ps aux` and your shell history."
        },
        {
          "name": "MIDPLANE_POLICY_FILE",
          "format": "filepath",
          "description": "Path (inside the container) to a policy YAML granting per-table read/read_write access, tenant scoping, and column masking. Omit for the safe default: reads allowed, writes and DDL denied."
        },
        {
          "name": "PORT",
          "default": "8080",
          "description": "Port the Streamable HTTP transport binds. Must match the url above if changed."
        }
      ]
    }
  ],
  "repository": {
    "url": "https://github.com/midplaneai/midplane",
    "source": "github",
    "subfolder": "engine/packages/mcp-server"
  },
  "websiteUrl": "https://midplane.ai/docs",
  "description": "Safe-by-default SQL guardrails for AI agents: AST-checked queries, per-table policy, audit log."
}