three.ws Marketplace

Name: three.ws Marketplace
Author: nirholas

by nirholasversion 0.1.3i★ –iRuns on your computer

Registry nameio.github.nirholas/marketplace-mcp

Install

Overview

Description from the maker (original English)

Browse and discover the public three.ws agent marketplace and skills catalog. Read-only.

PopNx MCP’s three pillars

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

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiVery new↓ 57/wk · ★ –

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: Online shops & payments

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: THREE_WS_BASE, THREE_WS_TIMEOUT_MS

You need

npmNode.js installed (for the npx command)

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

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

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

{
  "mcpServers": {
    "marketplace": {
      "command": "npx",
      "args": [
        "-y",
        "@three-ws/marketplace-mcp"
      ],
      "env": {
        "THREE_WS_BASE": "your-value",
        "THREE_WS_TIMEOUT_MS": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add marketplace --env THREE_WS_BASE=your-value --env THREE_WS_TIMEOUT_MS=your-value -- npx -y @three-ws/marketplace-mcp

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

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

{
  "mcpServers": {
    "marketplace": {
      "command": "npx",
      "args": [
        "-y",
        "@three-ws/marketplace-mcp"
      ],
      "env": {
        "THREE_WS_BASE": "your-value",
        "THREE_WS_TIMEOUT_MS": "your-value"
      }
    }
  }
}

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": {
    "marketplace": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@three-ws/marketplace-mcp"
      ],
      "env": {
        "THREE_WS_BASE": "your-value",
        "THREE_WS_TIMEOUT_MS": "your-value"
      }
    }
  }
}

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

THREE_WS_BASE env
Base URL of the three.ws API that serves /api/marketplace and /api/skills. Override only when self-hosting or targeting a preview deployment.
THREE_WS_TIMEOUT_MS env
Per-request timeout in milliseconds. These are fast public read endpoints, so the default is modest.

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 8, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account nirholas, 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 Online shops & paymentsi

More stars than 0% of the other 2565 servers in this category
Published to the registry more recently than 51% of the other 2565 servers in this category
Basic checks equal to or better than 100% of the other 2565 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 three.ws Marketplace 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?

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 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 (0.1.3) reached the registry 29 days ago.

Which apps can use it?

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

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

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by spreeWidely used★ 15.8KUpdated 9 days ago

Runs in the cloud

Install

Stripe MCP

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by stripeWidely used★ 2KUpdated 13 months ago

Runs in the cloud✓ stripe.com

Install

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

Install

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.

@three-ws/marketplace-mcp

Browse the three.ws agent marketplace and skills catalog from any AI agent.

A Model Context Protocol server that gives any AI assistant browse and discovery of the three.ws marketplace over stdio. Search and page the published agents, drill into one by id, and explore the reusable skills catalog — all from the public three.ws API.

No API key, no signer, no payment — every call hits the public /api/marketplace and /api/skills endpoints. Creating or publishing agents and skills is the *authenticated write path* on the HTTP API; this server exposes browse/discovery only.

Install

npm install @three-ws/marketplace-mcp

Or run with npx (no install):

npx @three-ws/marketplace-mcp

Quick start

Claude Code, one line:

claude mcp add marketplace -- npx -y @three-ws/marketplace-mcp

Claude Desktop / Cursor (claude_desktop_config.json or mcp.json):

"mcpServers": { "marketplace": { "command": "npx", "args": ["-y", "@three-ws/marketplace-mcp"] } } }

Inspect the surface with the MCP Inspector:

npx -y @modelcontextprotocol/inspector npx @three-ws/marketplace-mcp

Tools

Tool	Type	What it does
`browse_agents`	read-only	Search & page the agent marketplace — filter by category and query, sort, paginate by cursor.
`agent_detail`	read-only	Fetch one published agent by id (system prompt, capabilities, author, ratings, skill prices, avatar).
`agent_categories`	read-only	List agent categories with the count of published agents in each, plus the overall total.
`browse_skills`	read-only	Search & page the skills catalog — filter by query and category, sort, paginate by cursor.
`skill_categories`	read-only	List skill categories that have at least one public skill, each with a slug, label, and count.

Input parameters

`browse_agents` — category (optional slug), q (optional free text), sort (recommended | recent | popular | top_rated, default recommended), limit (1–48, default 24), cursor (optional pagination cursor).

`agent_detail` — id (required: the agent's UUID, from a browse_agents card).

`agent_categories` — no parameters.

`browse_skills` — q (optional free text), category (optional slug), sort (popular | new | az, default popular), limit (1–50, default 20), cursor (optional pagination cursor).

`skill_categories` — no parameters.

Example

// browse_agents

{ "q": "code review", "sort": "top_rated", "limit": 3 }

{ "ok": true, "items": [ { "id": "a1b2c3d4-…", "name": "Code Reviewer", "description": "Reviews diffs for bugs and style.", "category": "programming", "tags": ["code", "review"], "rating_avg": 4.8, "rating_count": 22, "views_count": 1340, "forks_count": 41, "thumbnail_url": "https://…", "avatar_glb_url": "https://…" } ], "next_cursor": "3" }

Pass next_cursor back as cursor to fetch the following page.

Examples

Runnable examples live in examples/:

node examples/list-tools.mjs            # every tool with its full input schema

node examples/browse-marketplace.mjs # categories + agents + detail + skills, live

Both spawn this server over stdio and read the live public catalog. Every tool here is read-only, so nothing can be published or purchased. See examples/README.md for expected output.

Requirements

Node.js >= 20.
Network access to https://three.ws (or your own THREE_WS_BASE).

Environment variables

Variable	Required	Default
`THREE_WS_BASE`	no	`https://three.ws`
`THREE_WS_TIMEOUT_MS`	no	`20000`

three.ws Marketplace

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

Values you fill in

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Online shops & paymentsi

Common questions

Alternatives

Spree Commerce: open-source B2B and marketplace ecommerce

Stripe MCP

MCP Cn Commerce

README from the maker

Install

Quick start

Tools

Input parameters

Example

Examples

Requirements

Environment variables

Links