io.github.open-deltat/deltat

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

What does this entry provide?

io.github.open-deltat/deltat is an MCP server entry in ChatHome Skills, sourced from Official MCP Registry and scored 78/100. As a Model Context Protocol server, it exposes tools that MCP-compatible LLM clients such as Claude, Cursor, and Copilot can call directly, extending an agent's reach beyond its built-in capabilities. ChatHome Skills discovered this entry through its daily ingest of official registries and GitHub discovery queries, and re-verifies repository facts, freshness signals, and install metadata on every run. The quality score weighs official-registry presence, a working install command, license clarity, GitHub star trajectory, and repository freshness — the full formula is on the Sources page. The install command above is ready to copy. Review the last-pushed date and repository status before adding io.github.open-deltat/deltat to a production agent workflow; the snapshot facts below are point-in-time values from the most recent ingest.

Snapshot facts

Source: Official MCP Registry
Quality: 78/100
Install method: npm
Repo: open-deltat/tap
Repo updated: Oct 4, 2026

Install command

npx -y @open-deltat/mcp@0.2.0

Install method: npm

Review the upstream source before running this command.

GitHub project Homepage

Quality

Repo stars

Repo updated

Oct 4, 2026

How is this score calculated?

Weighted across six dimensions, scored 0-100.
Provenance (25): listed in an official or curated registry.
Installability (25): a runnable install command beats a declared transport, which beats a source checkout.
Maintenance (20): recency of the last push; archived entries score zero here.
Adoption (20): repository stars on a log curve.

MCP manifest

{
  "_meta": {
    "io.modelcontextprotocol.registry/official": {
      "status": "active",
      "isLatest": true,
      "updatedAt": "2026-10-04T13:20:22.35757Z",
      "publishedAt": "2026-10-04T13:20:22.35757Z",
      "statusChangedAt": "2026-10-04T13:20:22.35757Z"
    }
  },
  "server": {
    "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."
  }
}

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