Due Date
Estimate a due date from LMP, conception, or ultrasound, with ACOG redating rules.
MCP server · by gumballtools.com
About
Due Date is an MCP server published by gumballtools.com. Marketplaces we read that list it: 1 (Official MCP Registry). We first saw it on 2026-10-11 and have recorded no change since. As of our marketplace pass on 2026-10-13.
What it asks for
- Runs remotely
None of the marketplaces we read publishes its tools or the settings it asks for.
What it declares, asks for and runs, in full
Only install plugins from developers you trust. We list what marketplaces publish and do not test plugins.
Works with
- Claude Code
- Codex
- Cursor
- VS Code
- Copilot CLI
A one-click link opens the client, which asks you to confirm before it adds the server.
From the marketplaces that list it and the MCP transport it declares, as each client documents them. We do not test plugins.
Connect
Commands and configs built only from what its marketplaces declare. We do not run them for you and do not test plugins.
As a remote MCP server
Built from what Official MCP Registry declares.
claude mcp add --transport http due-date https://due-date.gumballtools.com/api/mcp
[mcp_servers.due-date]
url = "https://due-date.gumballtools.com/api/mcp"
{
"mcpServers": {
"due-date": {
"url": "https://due-date.gumballtools.com/api/mcp"
}
}
}
Where it is published
| Marketplace | Status | Version | Figures | Verified | First seen |
|---|---|---|---|---|---|
| Official MCP Registry (Open the registry record) | Listed | 0.1.0 | No figure published | Not marked |
Each figure is the marketplace's own and is never added up across marketplaces. A marketplace that publishes no figure shows none: no number is not zero.
What changed
Nothing has moved on this plugin since we started watching it.
Possibly the same plugin
Listings that share a signal with this one but not enough for us to treat them as the same product.
Similar plugins
Products whose own names, descriptions, tools and skills are closest in meaning to this one, on every marketplace we read. Closeness is ranked within this list only.
-
Deterministic date arithmetic with auditable receipts: business days, due dates, holidays.
-
date-calculator-ai-mcp io.github.CSOAI-ORG/date-calculator-ai-mcp
Date Calculator Ai MCP Server by MEOK AI Labs
-
site uk.co.termdatesapi/site
Term Dates API: the site's own MCP server — compare, enquiry (enquiry = a human handoff, not a...
-
Deterministic batch tools so LLM agents stop guessing dates and math.
-
Date arithmetic: day differences, business days, age, leap years, day-of-week, add/subtract.
-
Domain age and RDAP lookup: registration date, age, expiry, registrar, status and nameservers.
-
Date context for agents: Chinese lunar calendar, solar terms, holidays for 12 regions. Offline.
-
Physician-reviewed medical opinions and prescriptions for AI agents.
-
cafe-mcp io.github.dangamsoft/cafe-mcp
Saju & BaZi (Four Pillars) birth chart, Day Master, Yongshin and manseryeok calendar. Free, no key.
-
Compute explicit durations. No reminders or legal guarantees. Customer key required.
Similar plugins by marketplace
The same question asked of one marketplace at a time: is there an analog of this plugin there?
Has a listing on Claude Code: claude-plugins-community (5)
-
lu.ma events MCP server with draft+confirm safety, audit logging, and prompt-injection scrubbing.…
-
eu-ai-act-compliance-mcp io.github.CSOAI-ORG/eu-ai-act-compliance-mcp
Eu Ai Act Compliance MCP Server by MEOK AI Labs
-
Local-first persistent session memory for Claude Code and other agents. SQLite + FTS5, no cloud.
-
mdk-mcp-server io.github.SAP/mdk-mcp-server
Model Context Protocol (MCP) server for AI-assisted development of MDK applications.
-
mcp-server io.github.cap-js/mcp-server
Model Context Protocol (MCP) server for AI-assisted development of CAP applications.
Has a listing on Claude Code: claude-plugins-official (5)
-
mdk-mcp-server io.github.SAP/mdk-mcp-server
Model Context Protocol (MCP) server for AI-assisted development of MDK applications.
-
mcp-server io.github.cap-js/mcp-server
Model Context Protocol (MCP) server for AI-assisted development of CAP applications.
-
Figma design platform integration. Access design files, extract component information, read design tokens, and translate designs into code. Bridge the gap between design and…
-
MCP server for terminal commands, file operations, and process management
-
Dynatrace observability skills: DQL query patterns, application and infrastructure monitoring, log analysis, problem investigation, and incident response workflows, with the…
Has a listing on Claude: knowledge-work-plugins (5)
-
Figma design platform integration. Access design files, extract component information, read design tokens, and translate designs into code. Bridge the gap between design and…
-
MCP server for terminal commands, file operations, and process management
-
Search companies and contacts, enrich leads, find lookalikes, and get AI-ranked contact recommendations. Pre-built skills chain multiple ZoomInfo tools into complete B2B sales…
-
Hosted MCP server for AI-assisted Grafana Cloud observability — no local installation required.
-
Skills for working with Langfuse, the open-source LLM engineering platform for tracing, prompt management, and evaluation.
Has a listing on Codex: openai-curated (openai/plugins) (5)
-
Connect Google Calendar for scheduling, availability, daily briefs, and event management.
-
Connect Microsoft Outlook Calendar for scheduling, daily briefs, event prep, and safe meeting changes.
-
Turn Codex into your ClickUp command center.
-
Evaluate Codex skills and plugins from chat with a beginner-friendly start command, local-first reports, token budget explanations, and guided benchmarking.
-
Predict structures, screen molecules and proteins, and design binders.
Has a listing on Community GitHub marketplaces (5)
-
lu.ma events MCP server with draft+confirm safety, audit logging, and prompt-injection scrubbing.…
-
4da-mcp-server io.github.4DA-Systems/4da-mcp-server
Upgrade intelligence for AI agents: what an upgrade changes, where it touches your code, CVE scans.
-
Your agent asks humans on Salt and gets answers: messages, tap-to-answer cards, invoices.
-
HTTP/REST client with saved collections, env secrets, and SSRF-safe host allowlisting.
Has a listing on Copilot CLI: github/awesome-copilot (5)
-
Complete toolkit for building Model Context Protocol (MCP) servers in TypeScript/Node.js using the official SDK. Includes instructions for best practices, a prompt for generating…
-
Complete toolkit for building Model Context Protocol (MCP) servers in Go using the official github.com/modelcontextprotocol/go-sdk. Includes instructions for best practices, a…
-
Figma design platform integration. Access design files, extract component information, read design tokens, and translate designs into code. Bridge the gap between design and…
-
Complete toolkit for building Model Context Protocol (MCP) servers in Kotlin using the official io.modelcontextprotocol:kotlin-sdk library. Includes instructions for best…
-
Safe BLE diagnostics, evidence workflows, and guarded automation for AI agents.
Has a listing on Copilot CLI: github/copilot-plugins (5)
-
mcp-apps
Generate MCP App widgets for MCP tools. Produces self-contained HTML widgets using the MCP Apps protocol.
-
Toolkit for building Microsoft 365 Copilot declarative agents — scaffolding, JSON manifest development, and capability configuration.
-
Build Power Apps Canvas Apps using the Canvas Authoring MCP server.
-
workiq
Query Microsoft 365 data with natural language — emails, meetings, documents, Teams messages, and more.
-
workiq-productivity
WorkIQ productivity skills powered by the local WorkIQ CLI — read-only insights across email, meetings, calendar, Teams, SharePoint, projects, and people.
Has a listing on Cursor: cursor/plugins (5)
-
Check availability and book, cancel, or reschedule.
-
List, create, update, and cancel Microsoft Outlook calendar events.
-
Iterative self-referential AI loops using the Ralph Wiggum technique.
-
Work with PostHog from chat: query product analytics and run SQL, manage feature flags and experiments, triage error tracking issues, and review session replays, surveys, and…
-
Manage envelopes, templates, workflows, and agreements.
Has a listing on Docker MCP Catalog (5)
-
Dynatrace-mcp io.github.dynatrace-oss/Dynatrace-mcp
[DEPRECATED] Dynatrace MCP Server. Migrate to dynatrace-for-ai or Dynatrace Remote MCP Server.
-
Access to Rube's catalog of remote MCP servers.
-
Starting point for using the awslabs MCP servers.
-
The Official Model Context Protocol (MCP) server for Kagi Search & other tools.
-
An MCP server for CharmHealth EHR that allows LLMs and MCP clients to interact with patient records, encounters, and practice information.
Has a listing on Official MCP Registry (5)
-
Deterministic date arithmetic with auditable receipts: business days, due dates, holidays.
-
date-calculator-ai-mcp io.github.CSOAI-ORG/date-calculator-ai-mcp
Date Calculator Ai MCP Server by MEOK AI Labs
-
site uk.co.termdatesapi/site
Term Dates API: the site's own MCP server — compare, enquiry (enquiry = a human handoff, not a...
-
Deterministic batch tools so LLM agents stop guessing dates and math.
-
Date arithmetic: day differences, business days, age, leap years, day-of-week, add/subtract.
Found by meaning, not by shared code or a shared repository: similar plugins stay separate products, and this is not a review or a recommendation.
Is this your plugin?
Add it to your projects and prove you maintain it with a file in its repository, a file on your domain or a DNS record. You get alerts when a marketplace lists it, drops it, changes its verified mark or what it asks for, and its remote endpoint goes on monitoring as a web service.
Data comes from the Official MCP Registry (registry.modelcontextprotocol.io), CC0 1.0. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.