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

Capxule

by Capxuleversion 2026.10.13i★ –iRuns in the cloud
Registry nameai.capxule/capxule

Install

Overview

Description from the maker (original English)

The context marketplace: expert guided journeys your assistant runs step by step.

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 in the cloud
  • Transport: Streamable HTTP
  • Category: Online shops & payments

Install

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

Before you install

You need

Which app do you use?

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

Works in Claude on the web, desktop and mobile:

  1. Open Settings → Connectors
  2. Press Add custom connector
  3. Paste the address below and press Add
  4. If it asks you to sign in, sign in with the maker
SettingsConnectors1+ Add2https://…3
https://capxule.ai/mcp

Run this in your terminal

claude mcp add --transport http capxule https://capxule.ai/mcp

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "capxule": {
      "url": "https://capxule.ai/mcp"
    }
  }
}

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.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "capxule": {
      "type": "http",
      "url": "https://capxule.ai/mcp"
    }
  }
}

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.

ChatGPT connects only to servers on the internet:

  1. Open ChatGPT on the web → Settings → Connectors (Apps)
  2. Press Create or Add (some plans need Developer mode under Advanced first)
  3. Paste the address below, give it a name and save
  4. If it asks you to sign in, sign in with the maker
SettingsConnectors1+ Create2https://…3
https://capxule.ai/mcp

Menu names can differ slightly by plan and over time.

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

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

What it can do

Tool names and descriptions exactly as the server reported them on Nov 8, 2026. The maker wrote them, not us; we show them as plain text.

  • find_journey

    Use when the user wants a guided, step-by-step journey on a topic, a skill or an exam. Searches the published journeys and returns up to three cards (id, title, summary, shape, languages, number of stops, estimated minutes, who it is for and not for, a premium flag, page_url). `i

  • list_journey_categories

    Use when the user asks what kinds of journeys are available. Returns each category slug, a readable label, the number of journeys in it and a few example titles.

  • browse_journeys

    Use when the user wants to look through the journeys, optionally within one category (a slug from list_journey_categories). Returns a page of the same cards as find_journey, with the total and next_offset.

  • open_journey

    Use when the user chooses a journey to start or continue. Opens it, or resumes the user's session for it, and returns the session contract: `session`, the stop titles, the capabilities, the limits in turns and the first step. Calling it again for the same journey resumes the same

  • take_journey_step

    Use for every step after open_journey. Sends the user's choice and returns the next step: `answer`, `statement`, numbered `options` with ids, `media`, `progress` and `limits`. Send `pick` with an option id when the user chose an option or its number; otherwise send `say` with wha

  • get_journey_progress

    Use when the user asks where they are in a journey, how far they have come or how much is left. Returns the current stop, visited and remaining stops, percent done, practice stats, limits and a resume line.

  • create_takeaway

    Use when the user asks for a summary to keep. Composes a markdown takeaway from this journey session: what the user asked, the key points and the stops visited. Available on connected accounts; otherwise returns not_available.

  • get_resume_link

    Use when the user wants to continue the journey later, on the website or in another assistant. Returns a resume link and a short resume code for this session.

  • restart_journey

    Use only when the user explicitly asks to start a journey over, after confirming with them. Returns to the first step and clears the visited stops; turns already used stay used. Returns the same session contract as open_journey.

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 8, 2026

  • ✓ Pass

    Maker matches the repo

    The registry name was verified against the domain capxule.ai (the registry checks domain ownership)

  • … 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

  • ✓ Pass

    Endpoint responds

    Responded in 468 ms (HTTP 200)

  • – Not applicable

    Sign-in with OAuth

    No sign-in needed

  • ✓ Pass

    No hidden instructions in tool descriptions

    Read 9 tool descriptions and found no hidden instructions to the AI

Compared with others in Online shops & paymentsi

  • More stars than 0% of the other 2548 servers in this category
  • Published to the registry more recently than 53% of the other 2548 servers in this category
  • Basic checks equal to or better than 100% of the other 2548 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 Capxule safe?

It passed 3 of 3 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?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.

Is it still maintained?

The GitHub repo last changed –, and the latest version (2026.10.13) reached the registry 25 days ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.

What can I use instead?

In the same category: Spree Commerce: open-source B2B and marketplace ecommerce, Stripe MCP, MCP Cn Commerce

Alternatives

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

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

Stripe MCP

Stripe’s official server lets AI view and manage customers, products, payments and invoices. Connect to Stripe’s cloud and sign in with OAuth.

by stripeGrowing★ 2KUpdated 12 months ago

Runs in the cloud✓ stripe.com

MCP Cn Commerce

8 read-only MCP platform entries; support is operation-specific; merchant live acceptance pending

by TonyWang-hubEarly↓ 73/wk★ 96Updated 29 days ago

Runs on your computer

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.

Capxule

The context marketplace. People who know a topic package what they know into guided journeys, and your AI assistant walks you through them one step at a time. Rent or buy, prepare for the U.S. citizenship civics test, calm a child through a meltdown, dispute a medical bill, start strength training after fifty, and much more across money, health, career, family and learning.

Connect your assistant to https://capxule.ai/mcp and it can find the right journey and guide you through it in the chat.

  • A step at a time, with choices. Every step comes with numbered options, so you choose the direction. Ask in your own words at any point and the journey adapts.
  • Practice and progress. Practice journeys quiz you and track what you missed. Ask "where am I?" to see how far you have come and what is left, by topic.
  • Pick up anywhere. Stop whenever you like and continue later, even in another assistant, with a resume link.
  • No sign-in to connect. No account or personal information is needed to start. When you want to keep your progress, the assistant gives you a link to continue on capxule.com.

The full list of journeys is in CATALOG.md (live versions: capxule.ai/catalog and capxule.ai/catalog.jsonl).

Connect

WhereHow
Claude (web, desktop, mobile)Settings → Connectors → Add custom connector → https://capxule.ai/mcp
Claude Codeclaude mcp add --transport http capxule https://capxule.ai/mcp
ChatGPTSearch for Capxule in the plugin directory
Cursor~/.cursor/mcp.json: {"mcpServers":{"capxule":{"url":"https://capxule.ai/mcp"}}}
VS Codecode --add-mcp '{"name":"capxule","type":"http","url":"https://capxule.ai/mcp"}'
Any MCP clientStreamable HTTP at https://capxule.ai/mcp, no authentication required
No MCPREST: https://capxule.ai/v1/openapi.json

Then ask about a topic, for example *"help me decide whether to rent or buy"* or *"what can Capxule walk me through?"*.

Tools

ToolWhat it does
find_journeyFinds the journeys that match the user's own words, each saying who it is for and who it is not for
list_journey_categoriesLists the areas covered, with example titles
browse_journeysPages through the journeys, optionally within one area
open_journeyOpens or resumes a journey and returns the first step
take_journey_stepTakes the next step, by a numbered option or in the user's own words
get_journey_progressWhere the user is, and what is left by topic
create_takeawayA takeaway to keep, such as a checklist or plan
get_resume_linkA resume link to continue later or in another assistant
restart_journeyStarts a journey over, only when the user asks

The resource capxule://catalog holds the catalog in Markdown.

For agent builders

Your assistant relays each step as it is given. The material behind a journey stays on Capxule and is never sent to your assistant in bulk.

Links

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