agentmods.dev

addevent

addevent is an MCP server for Claude Code, Codex, Cursor, Gemini CLI, OpenCode from m190/usefulapi-mcp. Its token cost is not measured, scanned A, a copy of llmopt, MIT.

A calendar and event connection for AddEvent, a service for publishing events and collecting RSVPs and subscriber lists.

In plain words
What is it for?
Use it to read calendars, events, RSVPs, and subscribers, or to create and update calendars and events.
Why use it?
It lets your coding agent handle event information without requiring separate manual updates in AddEvent.

MCP server for Claude CodeCodexCursorGemini CLIOpenCode

Written for no agent in particular: it speaks MCP, so any client can run it.

One of 421 entries in server.json upstream. Installing this one merges just its entry into your config; the other 420 are separate, each on its own page.

not rated 0repo today A scan tokens not measured copy · 70% MIT

Good fit Use it to read calendars, events, RSVPs, and subscribers, or to create and update calendars and events.

Compare 6 mcp servers from other repositories ↓
Install with agentmods
npx agentmods add mcp/m190/usefulapi-mcp/17track-addevent
View source ↗ m190/usefulapi-mcp usefulapi.io
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo
git clone --depth 1 https://github.com/m190/usefulapi-mcp

Made for: Claude Code, Codex, Cursor, Gemini CLI, OpenCode.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for addevent

README.md
[![agentmods](https://agentmods.dev/badge/mcp/m190/usefulapi-mcp/17track-addevent/github.svg)](https://agentmods.dev/mcp/m190/usefulapi-mcp/17track-addevent)
Your own site
<a href="https://agentmods.dev/mcp/m190/usefulapi-mcp/17track-addevent"><img src="https://agentmods.dev/badge/mcp/m190/usefulapi-mcp/17track-addevent/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for addevent

Your own site · 80×15
<a href="https://agentmods.dev/mcp/m190/usefulapi-mcp/17track-addevent"><img src="https://agentmods.dev/badge/mcp/m190/usefulapi-mcp/17track-addevent.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session not measured What this adds to a session before it is invoked.
When invoked not measured Not applicable: nothing here is loaded into a session.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin 70% copy Near-identical to another mod in the catalogue.
Security

Grade A, and why

addevent scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured yesterday.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

This is a copy

70% identical to llmopt — 4 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.

servers/17track/server.json · 6 lines

What it actually says

{
  "addevent": {
    "url": "https://addevent.usefulapi.io/mcp",
    "type": "streamable-http"
  }
}
Same file

What else server.json configures

This page is one entry in a file that holds 421. Installing the file brings all of them; each is measured and scanned on its own page. The 60 below are a sample.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. yesterday First seen · 6 lines scan A cdd3acb49af9

Subscribe to this mod's changes

addevent is an MCP server published in the GitHub repository m190/usefulapi-mcp (0 stars, last pushed today), licensed MIT. Its token cost is not measured: an MCP server costs its tool schemas, not its config file. A static security scan graded it A with 0 findings. It is 70% identical to llmopt, differing in 4 lines, and is treated as a copy.

Project managementclaudemcpmcp-servermodel-context-protocolremote-mcp
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