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8 clients · secrets stay placeholders

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{
  "mcpServers": {
    "deltat": {
      "command": "npx",
      "args": [
        "-y",
        "@open-deltat/[email protected]"
      ],
      "env": {
        "DELTAT_PASSWORD": "${DELTAT_PASSWORD}",
        "DELTAT_HOST": "localhost",
        "DELTAT_PORT": "5433",
        "DELTAT_DATABASE": "public",
        "DELTAT_USER": "user"
      }
    }
  }
}

claude mcp add deltat -e "DELTAT_PASSWORD=${DELTAT_PASSWORD}" -e "DELTAT_HOST=localhost" -e "DELTAT_PORT=5433" -e "DELTAT_DATABASE=public" -e "DELTAT_USER=user" -- npx -y @open-deltat/[email protected]

[mcp_servers.deltat]
command = "npx"
args = ["-y", "@open-deltat/[email protected]"]
env = { "DELTAT_PASSWORD" = "${DELTAT_PASSWORD}", "DELTAT_HOST" = "localhost", "DELTAT_PORT" = "5433", "DELTAT_DATABASE" = "public", "DELTAT_USER" = "user" }

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "deltat": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "@open-deltat/[email protected]"
      ],
      "enabled": true,
      "environment": {
        "DELTAT_PASSWORD": "{env:DELTAT_PASSWORD}",
        "DELTAT_HOST": "localhost",
        "DELTAT_PORT": "5433",
        "DELTAT_DATABASE": "public",
        "DELTAT_USER": "user"
      }
    }
  }
}

{
  "mcpServers": {
    "deltat": {
      "command": "npx",
      "args": [
        "-y",
        "@open-deltat/[email protected]"
      ],
      "env": {
        "DELTAT_PASSWORD": "${DELTAT_PASSWORD}",
        "DELTAT_HOST": "localhost",
        "DELTAT_PORT": "5433",
        "DELTAT_DATABASE": "public",
        "DELTAT_USER": "user"
      }
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=deltat&config=eyJjb21tYW5kIjoibnB4IiwiYXJncyI6WyIteSIsIkBvcGVuLWRlbHRhdC9tY3BAMC4yLjAiXSwiZW52Ijp7IkRFTFRBVF9QQVNTV09SRCI6IiR7REVMVEFUX1BBU1NXT1JEfSIsIkRFTFRBVF9IT1NUIjoibG9jYWxob3N0IiwiREVMVEFUX1BPUlQiOiI1NDMzIiwiREVMVEFUX0RBVEFCQVNFIjoicHVibGljIiwiREVMVEFUX1VTRVIiOiJ1c2VyIn19"
}

{
  "servers": {
    "deltat": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@open-deltat/[email protected]"
      ],
      "env": {
        "DELTAT_PASSWORD": "${DELTAT_PASSWORD}",
        "DELTAT_HOST": "localhost",
        "DELTAT_PORT": "5433",
        "DELTAT_DATABASE": "public",
        "DELTAT_USER": "user"
      }
    }
  }
}

{
  "mcpServers": {
    "deltat": {
      "command": "npx",
      "args": [
        "-y",
        "@open-deltat/[email protected]"
      ],
      "env": {
        "DELTAT_PASSWORD": "${DELTAT_PASSWORD}",
        "DELTAT_HOST": "localhost",
        "DELTAT_PORT": "5433",
        "DELTAT_DATABASE": "public",
        "DELTAT_USER": "user"
      }
    }
  }
}

extensions:
  "deltat":
    enabled: true
    name: "deltat"
    type: stdio
    cmd: "npx"
    args:
      - "-y"
      - "@open-deltat/[email protected]"
    envs:
      "DELTAT_PASSWORD": "${DELTAT_PASSWORD}"
      "DELTAT_HOST": "localhost"
      "DELTAT_PORT": "5433"
      "DELTAT_DATABASE": "public"
      "DELTAT_USER": "user"
    timeout: 300

Placeholders to fill from your own secret store: ${DELTAT_PASSWORD}. 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

dependenciesn/a · weight 15

n/a
deps.known_vulns, deps.mcp_sdk_version, deps.resolvabledeps.dev does not know @open-deltat/[email protected]

Tool list unknown · checked 2026-10-20 03:37 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 96 / 100

provenance90

livenessn/a

freshness100

hygiene100

+repository +namespace-matches-repo +website ~liveness-unmeasured +updated-16d-ago

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

Dependencies

@open-deltat/[email protected] npmthis version is not known to the dependency resolver

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
`@open-deltat/mcp`	npm	0.2.0	–	`DELTAT_PASSWORD`

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.open-deltat/deltat",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-07-09/server.schema.json",
  "version": "0.2.0",
  "packages": [
    {
      "version": "0.2.0",
      "transport": {
        "type": "stdio"
      },
      "identifier": "@open-deltat/mcp",
      "registryType": "npm",
      "registryBaseUrl": "https://registry.npmjs.org",
      "environmentVariables": [
        {
          "name": "DELTAT_PASSWORD",
          "isSecret": true,
          "isRequired": true,
          "description": "Password for the deltat server. Required; there is no default."
        },
        {
          "name": "DELTAT_HOST",
          "default": "localhost",
          "description": "Hostname of the deltat server."
        },
        {
          "name": "DELTAT_PORT",
          "default": "5433",
          "description": "Port deltat listens on."
        },
        {
          "name": "DELTAT_DATABASE",
          "default": "public",
          "description": "Tenant to connect to. Each database name is an isolated tenant."
        },
        {
          "name": "DELTAT_USER",
          "default": "user",
          "description": "Username presented at connect time."
        },
        {
          "name": "DELTAT_TLS",
          "description": "on to encrypt the connection and verify deltat's certificate. Unset means off unless DELTAT_TLS_CA is set; without TLS the password is sent in the clear, so use it for any deltat that is not on this machine."
        },
        {
          "name": "DELTAT_TLS_CA",
          "description": "Path to a PEM certificate to trust instead of the system's authorities, for a deltat with a self-signed certificate. Implies DELTAT_TLS=on."
        }
      ]
    }
  ],
  "repository": {
    "url": "https://github.com/open-deltat/tap",
    "source": "github",
    "subfolder": "packages/mcp"
  },
  "websiteUrl": "https://delt.at",
  "description": "Give an agent a calendar it can book without double-booking: find, hold, then commit atomically."
}