SERVER

Tap

Rank #11,785

io.github.open-deltat/deltat

Give an agent a calendar it can book without double-booking: find, hold, then commit atomically.

1 version

9 GitHub stars

by open-deltat (1 servers)View repository ↗

Listed & last published

Oct 4, 2026

PURPOSE

What you can do with Tap

Tap is a Model Context Protocol (MCP) server published by open-deltat. It ranks #11,785 of 152,076 active servers on MCP Toplist, and its repository has 9 GitHub stars. Tap is listed on Official MCP, with 1 tracked version. It was first listed on Oct 4, 2026 and most recently updated on Oct 4, 2026.

Not verifiedMCP Toplist has not yet written a checked profile for this server, so the paragraph above is assembled from registry data only. The repository README is the authority on what it does.

CAPABILITIES AND LIMITATIONS

What Tap can and cannot do

Not verifiedMCP Toplist has not catalogued this server's tools or limitations. The repository README lists them.

REQUIREMENTS

What you need before using Tap

DeclaredAPI keyCredentials declared

The registry listing declares required configuration before first use — typically an API key, token or connection string set via environment variables.

Declared by the Official MCP Registry, last synced Oct 25, 2026. Not independently verified by MCP Toplist.

Declared in the registry install config

DELTAT_PASSWORD · required
DELTAT_HOST · optional
DELTAT_PORT · optional
DELTAT_DATABASE · optional
DELTAT_USER · optional
DELTAT_TLS · optional
DELTAT_TLS_CA · optional

INSTALLATION AND FIRST TASK

Connect Tap and confirm it works

npm package

claude mcp add deltat -e "DELTAT_PASSWORD=<your DELTAT_PASSWORD>" -e "DELTAT_HOST=<your DELTAT_HOST>" -e "DELTAT_PORT=<your DELTAT_PORT>" -e "DELTAT_DATABASE=<your DELTAT_DATABASE>" -e "DELTAT_USER=<your DELTAT_USER>" -e "DELTAT_TLS=<your DELTAT_TLS>" -e "DELTAT_TLS_CA=<your DELTAT_TLS_CA>" -- npx -y @open-deltat/mcp

Replace each placeholder with your own value before saving.

npm package

[mcp_servers.deltat]
command = "npx"
args = ["-y", "@open-deltat/mcp"]

[mcp_servers.deltat.env]
DELTAT_PASSWORD = "<your DELTAT_PASSWORD>"
DELTAT_HOST = "<your DELTAT_HOST>"
DELTAT_PORT = "<your DELTAT_PORT>"
DELTAT_DATABASE = "<your DELTAT_DATABASE>"
DELTAT_USER = "<your DELTAT_USER>"
DELTAT_TLS = "<your DELTAT_TLS>"
DELTAT_TLS_CA = "<your DELTAT_TLS_CA>"

Add to ~/.codex/config.toml. Replace each placeholder with your own value before saving.

npm package

{
  "mcpServers": {
    "deltat": {
      "command": "npx",
      "args": [
        "-y",
        "@open-deltat/mcp"
      ],
      "env": {
        "DELTAT_PASSWORD": "<your DELTAT_PASSWORD>",
        "DELTAT_HOST": "<your DELTAT_HOST>",
        "DELTAT_PORT": "<your DELTAT_PORT>",
        "DELTAT_DATABASE": "<your DELTAT_DATABASE>",
        "DELTAT_USER": "<your DELTAT_USER>",
        "DELTAT_TLS": "<your DELTAT_TLS>",
        "DELTAT_TLS_CA": "<your DELTAT_TLS_CA>"
      }
    }
  }
}

Add to claude_desktop_config.json (Settings → Developer → Edit Config). Replace each placeholder with your own value before saving.

npm package

{
  "mcpServers": {
    "deltat": {
      "command": "npx",
      "args": [
        "-y",
        "@open-deltat/mcp"
      ],
      "env": {
        "DELTAT_PASSWORD": "<your DELTAT_PASSWORD>",
        "DELTAT_HOST": "<your DELTAT_HOST>",
        "DELTAT_PORT": "<your DELTAT_PORT>",
        "DELTAT_DATABASE": "<your DELTAT_DATABASE>",
        "DELTAT_USER": "<your DELTAT_USER>",
        "DELTAT_TLS": "<your DELTAT_TLS>",
        "DELTAT_TLS_CA": "<your DELTAT_TLS_CA>"
      }
    }
  }
}

Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (per project). Replace each placeholder with your own value before saving.

npm package

{
  "servers": {
    "deltat": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@open-deltat/mcp"
      ],
      "env": {
        "DELTAT_PASSWORD": "<your DELTAT_PASSWORD>",
        "DELTAT_HOST": "<your DELTAT_HOST>",
        "DELTAT_PORT": "<your DELTAT_PORT>",
        "DELTAT_DATABASE": "<your DELTAT_DATABASE>",
        "DELTAT_USER": "<your DELTAT_USER>",
        "DELTAT_TLS": "<your DELTAT_TLS>",
        "DELTAT_TLS_CA": "<your DELTAT_TLS_CA>"
      }
    }
  }
}

Save as .vscode/mcp.json in your workspace. Replace each placeholder with your own value before saving.

npm package

{
  "mcpServers": {
    "deltat": {
      "command": "npx",
      "args": [
        "-y",
        "@open-deltat/mcp"
      ],
      "env": {
        "DELTAT_PASSWORD": "<your DELTAT_PASSWORD>",
        "DELTAT_HOST": "<your DELTAT_HOST>",
        "DELTAT_PORT": "<your DELTAT_PORT>",
        "DELTAT_DATABASE": "<your DELTAT_DATABASE>",
        "DELTAT_USER": "<your DELTAT_USER>",
        "DELTAT_TLS": "<your DELTAT_TLS>",
        "DELTAT_TLS_CA": "<your DELTAT_TLS_CA>"
      }
    }
  }
}

Add to ~/.codeium/windsurf/mcp_config.json. Replace each placeholder with your own value before saving.

npm package

{
  "mcpServers": {
    "deltat": {
      "command": "npx",
      "args": [
        "-y",
        "@open-deltat/mcp"
      ],
      "env": {
        "DELTAT_PASSWORD": "<your DELTAT_PASSWORD>",
        "DELTAT_HOST": "<your DELTAT_HOST>",
        "DELTAT_PORT": "<your DELTAT_PORT>",
        "DELTAT_DATABASE": "<your DELTAT_DATABASE>",
        "DELTAT_USER": "<your DELTAT_USER>",
        "DELTAT_TLS": "<your DELTAT_TLS>",
        "DELTAT_TLS_CA": "<your DELTAT_TLS_CA>"
      }
    }
  }
}

Replace each placeholder with your own value before saving.

First successful task

After adding the config, ask your client to list this server's tools. A tool list confirms the connection; an empty list or an error means the server did not start or needs credentials.

MAINTENANCE AND EVIDENCE

What changed, and when this was checked

First listed: Oct 4, 2026
Latest version published: Oct 4, 2026
Version history: 1 version tracked (below)
Requirements evidence: Declared by the Official MCP Registry, last synced Oct 25, 2026. Not independently verified by MCP Toplist.
Profile checked: Not yet — purpose, capabilities and requirements above come from registry data only
Ranking data as of: Oct 4, 2026

Registry sightings

Official MCP ↗listed since Oct 5, 2026 · still listed

Do you maintain Tap? to correct or enrich this profile.

VERSIONS

Available versions (1)

Version	Published
0.2.0	Oct 4, 2026

STANDING

#11,785of 152,076 active serversTop 10%

Ranks ahead of 140,291 of 152,076 servers on MCP Toplist.

BADGE

Show your rank

Maintain this server? Add the live rank badge to your README — it updates automatically as the leaderboard changes.

Markdown

[![MCP Toplist](https://mcptoplist.com/badge/io.github.open-deltat%2Fdeltat.svg)](https://mcptoplist.com/server/io.github.open-deltat%2Fdeltat)

HTML

<a href="https://mcptoplist.com/server/io.github.open-deltat%2Fdeltat"><img src="https://mcptoplist.com/badge/io.github.open-deltat%2Fdeltat.svg" alt="MCP Toplist: Top 10% of 152,076" /></a>

Variants: append ?metric=score or ?metric=stars to the image URL.

FAQ

Frequently asked questions

Who maintains Tap?: Tap is maintained by open-deltat, which publishes 1 MCP server (1 total version) tracked on MCP Toplist.
Is Tap listed on the Official MCP Registry?: Yes — Tap is listed on the Official MCP Registry.
How many versions does Tap have?: MCP Toplist tracks 1 version of Tap, most recently published on Oct 4, 2026.
Where can I find the source code for Tap?: The source code for Tap is hosted at github.com/open-deltat/tap.

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