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PopNx MCPMCP servers for people who use AI · explained in plain words

Mimecast MCP

by servosityversion 0.1.0i★ –iRuns on your computer
Registry nameio.github.Servosity/mimecast-mcp

Install

Overview

Description from the maker (original English)

Explain a held or blocked Mimecast message in one verdict, triage the hold queue, trace phish clicks

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

  • Connection: Runs on your computer
  • Transport: stdio
  • Category: Other
  • You need to fill in: MIMECAST_CLIENT_ID, MIMECAST_CLIENT_SECRET, MIMECAST_MCP_HTTP_TOKEN

Install

Pick the AI app you use, then copy the settings.

Before you install

  • Basic checks: 1 of 1 passed
  • Runs on your computer with your user’s permissions (files, network, apps).
  • You fill in yourself: MIMECAST_CLIENT_ID, MIMECAST_CLIENT_SECRET, MIMECAST_ACCOUNT_CODE, MIMECAST_BASE_URL, MIMECAST_TOKEN_URL, MIMECAST_OAUTH_SCOPE, MIMECAST_USER_AGENT, PRINTING_PRESS_CLIENT_PROFILE, MIMECAST_MCP_READ_ONLY, MIMECAST_NO_LOCAL_DATA, MIMECAST_MCP_HTTP_TOKEN

Values marked secret are keys to your account. Never share them or paste them into a chat.

Which app do you use?

Pick your app above. We remember it, so next time the button says “Install in …”.

Download the maker’s .mcpb file

The link goes to the maker’s own file; we do not host or repackage it. Open the file and Claude Desktop installs it.

Run this in your terminal

Fill in the empty values before running it.

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.

Your choice stays on this device in a cookie; no account needed.

Values you fill in

  • MIMECAST_CLIENT_ID secret required env
    Client ID of your Mimecast API 2.0 application.
  • MIMECAST_CLIENT_SECRET secret required env
    Client secret of your Mimecast API 2.0 application.
  • MIMECAST_ACCOUNT_CODE env
    Optional. Delegate access account code for the classic endpoints.
  • MIMECAST_BASE_URL env
    Optional. Regional API gateway, for example https://uk-api.services.mimecast.com.
  • MIMECAST_TOKEN_URL env
    Optional. Regional OAuth token endpoint; set it with MIMECAST_BASE_URL.
  • MIMECAST_OAUTH_SCOPE env
    Optional. OAuth scope for the token request; leave blank for none.
  • MIMECAST_USER_AGENT env
    Optional. Overrides the User-Agent the CLI sends to Mimecast.
  • PRINTING_PRESS_CLIENT_PROFILE env
    Optional. Binds the MCP server to one saved client profile.
  • MIMECAST_MCP_READ_ONLY env
    Optional. Set to exactly 1 to expose only read-only tools and refuse any state-changing call.
  • MIMECAST_NO_LOCAL_DATA env
    Optional. Set to 1 to keep no local copy of API responses.
  • MIMECAST_MCP_HTTP_TOKEN secret env
    Required only when running the MCP server with --transport http. Not needed for the default local stdio transport.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Runs on your computer; the tool list appears in your AI app after you install it.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 7, 2026

  • ✓ Pass

    Maker matches the repo

    The registry name was verified with the GitHub account servosity, which owns the repo

  • … Not checked yet

    Still maintained

    We have not read this repo from GitHub yet

  • … Not checked yet

    Has a licence

    We have not read this repo from GitHub yet

  • – Not applicable

    Endpoint responds

    This one runs on your computer; there is no internet endpoint

  • – Not applicable

    Sign-in with OAuth

    Runs on your computer and uses local settings instead

  • … Not checked yet

    No hidden instructions in tool descriptions

    Runs on your computer; we can only read tool lists from internet endpoints

Compared with others in Otheri

  • More stars than 0% of the other 32727 servers in this category
  • Published to the registry more recently than 94% of the other 32727 servers in this category
  • Basic checks equal to or better than 100% of the other 32727 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Mimecast MCP safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

You need to fill in: MIMECAST_CLIENT_ID, MIMECAST_CLIENT_SECRET, MIMECAST_MCP_HTTP_TOKEN

Does it run on my computer or in the cloud?

It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.1.0) reached the registry 2 days ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need MCPB on your computer.

What can I use instead?

In the same category: Spec Driven Development, Remote Desktop Commander, Foliosio

Alternatives

Servers in the same category from other makers, sorted by stars.

Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

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Runs on your computer★ 440MITUpdated 14 months ago
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Remote Desktop Commander

by desktop-commander

Remote Desktop Commander: use files, terminal and processes on your own computers from any AI app.

Runs in the cloud★ 211Updated 2 days ago
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Foliosio

by foliosio.com

Read your support inbox, tag conversations and save draft replies from your AI agent. Never sends.

Runs in the cloudUpdated today
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README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

Mimecast + AI - for ChatGPT, Claude, GitHub Copilot, Microsoft 365 Copilot, Gemini, and any agent that speaks MCP

Unofficial. Community-built Claude Code Skill and MCP server for the Mimecast

API. Not affiliated with, endorsed by, or sponsored by Mimecast Services Limited.

▶ Watch the 30-second demo - demo data is simulated; every command shown exists in the real CLI.

Find a held or blocked Mimecast message, explain why in one verdict, and release it behind a safety check, with hold-queue triage, mail-flow health and phish click tracing built in. Works with the AI you already use - ChatGPT (Plus/Pro+), Claude Desktop, Codex, Claude Code, Claude Cowork, and GitHub Copilot - plus Microsoft 365 Copilot / Copilot Studio and Google Gemini via the remote path. Free, open source, runs on your laptop. Built for MSP owners. No code required.

Works with your agent

The six agents MSP owners actually use (self-serve, works today):

Your AI agentHow to install the Mimecast skill
Claude DesktopRun installer, then Settings > Extensions to register mimecast-mcp (no JSON editing).
ChatGPT (paid plans)Run installer, host mimecast-mcp over HTTPS with MIMECAST_MCP_HTTP_TOKEN set, then register it as a Developer Mode connector if your connector settings can send the bearer token.
Codex CLIPaste the install prompt below.
Claude CodePaste the install prompt below.
Claude CoworkPaste the install prompt below.
GitHub Copilot (VS Code)Run installer, add mimecast-mcp to mcp.json under the servers key, then pick Agent mode.

For ChatGPT, run mimecast-mcp --transport http with MIMECAST_MCP_HTTP_TOKEN set, on an HTTPS host; every request sends that token. See mcp-install.md.

Also for the Microsoft and Google stacks

Big install base, but an honest heads-up: these are the remote / enterprise path, not the local binary you just installed.

AgentWhat it takes
Microsoft 365 Copilot / Copilot StudioNot self-serve. Host mimecast-mcp over HTTPS with MIMECAST_MCP_HTTP_TOKEN set, then wire it into Copilot Studio (Tools > Add a tool > Model Context Protocol > Server URL) or a declarative agent, if it can send the bearer token. Needs a Copilot Studio license + tenant admin. See mcp-install.md.
Google GeminiGemini CLI is local - same as Claude Code. The Gemini app is remote - same HTTPS path as ChatGPT. See mcp-install.md.

Skill-native agents (also covered): Hermes and OpenClaw read this skill's SKILL.md directly *and* speak MCP - see their install sections below. Also works with Cursor, Windsurf, Cline, Continue.dev, and Zed via MCP. Full per-tool wire-up: [docs/which-agent.md](../../docs/which-agent.md).

Run more than one agent? Install across all 51+ supported agents in one command: npx skills add Servosity/msp-skills@latest (requires Node.js, then run the per-skill installer for the CLI/MCP binaries). See docs/which-agent.md.

Install in 60 seconds

Fastest for Claude Desktop - one-click .mcpb

Download Mimecast MCP (.mcpb) - then open Claude Desktop > Settings > Extensions and select the file. One click, no JSON, no shell. (Browse every Mimecast release on the releases page.)

Prefer the Claude Code plugin? Add the marketplace once, then install - works immediately, no directory listing required:

/plugin marketplace add Servosity/msp-skills

/plugin install mimecast@msp-skills

Path A - paste one prompt into your AI agent (recommended)

Copy this into Claude Code, Codex CLI, or Claude Cowork:

Install the Mimecast Skill and MCP server from Servosity/msp-skills in this agent workspace. If this workspace uses a POSIX shell (macOS, Linux, WSL, or Bash), run bash <(curl -fsSL https://raw.githubusercontent.com/Servosity/msp-skills/main/skills/mimecast/install.sh). If it uses Windows PowerShell, run iwr -useb https://raw.githubusercontent.com/Servosity/msp-skills/main/skills/mimecast/install.ps1 | iex. Then authenticate per the README and run mimecast-cli --help to explore.

The same prompt works in any agent that can run shell.

Path B - run the installer yourself

Windows (PowerShell):

iwr -useb https://raw.githubusercontent.com/Servosity/msp-skills/main/skills/mimecast/install.ps1 | iex

macOS / Linux:

bash <(curl -fsSL https://raw.githubusercontent.com/Servosity/msp-skills/main/skills/mimecast/install.sh)

The installer drops both mimecast-cli (the CLI) and mimecast-mcp (the MCP server) into your user bin path. Claude Code, Codex, and Cowork discover the Skill via SKILL.md in this directory.

Verify:

mimecast-cli --version
Upgrade to the latest version

The installer always fetches the current release - re-run it to upgrade:

macOS / Linux:

bash <(curl -fsSL https://raw.githubusercontent.com/Servosity/msp-skills/main/skills/mimecast/install.sh)

Windows (PowerShell):

iwr -useb https://raw.githubusercontent.com/Servosity/msp-skills/main/skills/mimecast/install.ps1 | iex

Claude Desktop .mcpb users: download the latest .mcpb (top of this section) and re-select it in Settings > Extensions. Claude Code plugin users: /plugin update mimecast@msp-skills.

Add to Claude Desktop, GitHub Copilot, Gemini CLI, Microsoft 365 Copilot, or another MCP client

After the installer runs, see [mcp-install.md](./mcp-install.md) and [docs/which-agent.md](../../docs/which-agent.md) for the per-agent wire-up - one section per agent, including the GitHub Copilot servers key and the remote Microsoft 365 Copilot / Copilot Studio path. Claude Desktop's Settings > Extensions panel is the simplest path; the MCP config block (for users who prefer editing JSON) is documented in mcp-install.md.

Install for Hermes

From the Hermes CLI:

hermes skills install servosity/msp-skills/skills/mimecast --force

Inside a Hermes chat session:

/skills install servosity/msp-skills/skills/mimecast --force

Hermes speaks MCP natively, so it can also use the mimecast-mcp server directly - same install path, same env vars.

Install for OpenClaw

Tell your OpenClaw agent (copy this):

Install the mimecast skill from https://github.com/servosity/msp-skills/tree/main/skills/mimecast. The skill defines how its required CLI (mimecast-cli) can be installed via the openclaw: frontmatter block.

OpenClaw isn't generally available yet; the frontmatter wiring is pre-shipped and will activate the moment OpenClaw launches.

Authenticate

Mimecast API 2.0 uses OAuth2 client credentials. In the Mimecast Administration Console go to Administration > Services > API and Platform Integrations > Mimecast API 2.0 > Generate Keys, choose the products you need (Email Security Cloud Gateway, Audit Events, Security Events) and a least-privilege role, then set the client ID and secret. API 1.0 access keys do not work.

macOS / Linux:

export MIMECAST_CLIENT_ID=<your-client-id>

export MIMECAST_CLIENT_SECRET= mimecast-cli doctor

Windows (PowerShell):

$env:MIMECAST_CLIENT_ID = "<your-client-id>"

$env:MIMECAST_CLIENT_SECRET = " " mimecast-cli doctor

The CLI exchanges them for a 30-minute bearer token and mints a new one automatically. For data residency, set both MIMECAST_BASE_URL and MIMECAST_TOKEN_URL to your regional gateway (for example https://uk-api.services.mimecast.com and https://uk-api.services.mimecast.com/oauth/token; us-api and de-api work the same way). With Mimecast delegate access, MIMECAST_ACCOUNT_CODE (or --account-code on the workflow commands) selects one customer account. doctor checks config, paths, and API reachability, and verifies the credential with one authenticated read (a 401 reads as rejected, a 404 as a wrong base URL).

What this skill does

Question your MSP keeps askingCommand
Why didn't this message arrive: held, rejected, released or delivered, and by which policy?mimecast-cli why --from billing@vendor.example --to alice@example.com --since 3d --agent
What is in the hold queue, grouped by reason, with a release-risk class per group?mimecast-cli held triage --since 24h --group-by reason --agent
Release this held message for the ticket, only if its hold reason is safe (preview first)mimecast-cli held release-safe eNo1jr0OgjAYRd-lExample --ticket T-1042 --plan
Who clicked this phishing link, and did anyone click through a warning?mimecast-cli ttp who-clicked https://phish.example/login --since 7d --agent
Which users did this phishing sender reach, which clicked, which still have it held?mimecast-cli threats sender @phish.example --since 3d --agent
Every threat, rejection and hold for one mailbox this weekmimecast-cli threats mailbox alice@example.com --since 7d --agent
Who released risky held messages this week, and which releases have no ticket?mimecast-cli held release-audit --since 7d --agent
Is mail flowing? One OK/WARN/FAIL verdictmimecast-cli mailflow --max-queue 200 --stale-after 30m --agent

These workflow commands call the Mimecast API live, in one run. why reports a stage (held, rejected-at-gateway, released-from-hold, rejected-from-hold, the tracking status, or not-found) with the hold or reject reason, policy, spam score and SPF/DKIM/DMARC checks. held triage returns groups with a risk_class (never-release, likely-junk, policy-review, review) and ready-to-act id_batches. threats mailbox and threats sender report fetch_failures and incomplete_sources, so a short answer is never read as clean. mailflow exits non-zero on FAIL (and on WARN with --fail-on-warn), so an RMM monitor can run it. Every covered Mimecast API 2.0 endpoint is also a typed command (held list, messages search, rejections, ttp url-logs, ...).

Full command reference: guide.md. For the AI-agent operating contract (--agent, --dry-run, when to confirm before mutating), see AGENTS.md.

What makes this different

Most Mimecast integrations, such as the Cortex XSOAR Mimecast pack, expose the API as one action per endpoint, for a playbook or a person to chain. That works for one lookup. It is slow for the questions a service desk actually gets, where one answer needs message tracking, the hold queue, the held release log and the rejection log together.

This connector answers each of those questions in one command. why joins tracking, the hold queue, the release log and the rejection log into one verdict; held triage groups the whole hold queue by reason with a release-risk class; held release-safe checks the hold reason before it releases and records the ticket in a local ledger that held release-audit reads back; threats sender and threats mailbox join the URL Protect, Attachment Protect and Impersonation Protect lo

Only the beginning is shown; read the rest in the repo

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