# npm MCP SDK Version Snapshot (`zentrafoundry/zentra-mcp-confusion-lab`) Actor

Read one public npm package related to the Model Context Protocol and return its latest version. $0.029 per package. Not a toolbox confusion test.

- **URL**: https://apify.com/zentrafoundry/zentra-mcp-confusion-lab.md
- **Developed by:** [Zentra](https://apify.com/zentrafoundry) (community)
- **Categories:** Developer tools, Automation
- **Stats:** 2 total users, 1 monthly users, 100.0% runs succeeded, 0 bookmarks
- **User rating**: No ratings yet

## Pricing

$29.00 / 1,000 result delivereds

This Actor is paid per event. You are not charged for the Apify platform usage, but only a fixed price for specific events.

Learn more: https://docs.apify.com/actors/running/actors-in-store.md#pay-per-event

## What's an Apify Actor?

An Actor is a serverless cloud program that runs on the Apify platform. It has two run modes.
In Batch mode, an Actor accepts a well-defined JSON input, performs an action which can take anything from a few seconds to a few hours,
and optionally produces a well-defined JSON output, datasets with results, or files in key-value store.
In Standby mode, an Actor provides a web server which can be used as a website, API, or an MCP server.

Apify vocabulary and the platform model are defined once, in the agent quickstart at https://apify.com/agents.md.

## How to integrate an Actor?

If asked about integration, you help developers integrate Actors into their projects.
You adapt to their stack and deliver integrations that are safe, well-documented, and production-ready.

Do not guess an integration path. Every one of them is in the agent quickstart at https://apify.com/agents.md: the Apify MCP server, Agent Skills with the Apify CLI, the JavaScript and Python clients, the REST API, and the account-free path for an agent with no human to sign in. It also carries the rule on stating cost before the first paid run.

For examples already wired to this Actor's own input schema, see the [API](#api) section below.

Each client library has reference documentation the quickstart does not restate: [JavaScript/TypeScript](https://docs.apify.com/api/client/js/docs.md) (`npm install apify-client`) and [Python](https://docs.apify.com/api/client/python/docs.md) (`pip install apify-client`).

# README

## npm MCP SDK Snapshot

An npm version pin is not a benchmark of crowded toolboxes.

registry.npmjs.org/@modelcontextprotocol/sdk/latest. Not a toolbox confusion test. $0.029.

### Last run

**Live row(s).** First row: **@modelcontextprotocol/sdk 1.30.0**

```json
{
  "title": "@modelcontextprotocol/sdk 1.30.0",
  "entityName": "@modelcontextprotocol/sdk",
  "listingName": "@modelcontextprotocol/sdk 1.30.0",
  "productName": "@modelcontextprotocol/sdk 1.30.0",
  "sourceUrl": "https://www.npmjs.com/package/@modelcontextprotocol/sdk",
  "sourceName": "npm MCP SDK latest — not a toolbox confusion test"
}
```

### Run it

```json
{
  "searchKeywords": [
    "mcp"
  ],
  "sourceMode": "startUrls",
  "outputMode": "buyer-ready-records",
  "maxItems": 10,
  "startUrls": [
    {
      "url": "https://registry.npmjs.org/@modelcontextprotocol/sdk/latest"
    }
  ]
}
```

### What lands in the dataset

- npm registry latest JSON
- name + version + license
- npm URL

### Use it when

Try is @modelcontextprotocol/sdk. Agent evals are not this Actor.

Builders pinning the MCP SDK.

### Price

**$0.029 / row** — about **$0.29** for a 10-row Try.

Schedule it. A one-off click is not Store revenue.

### What you should know

- Not a confusion benchmark.
- Not MCP server routing.

### FAQ

**Is the last-run a fixture?** No. If the dataset is empty, the public source failed — we do not invent a row.

**Will this test whether agents pick the right tool?** No. Public npm package fields.

# Actor input Schema

## `toolbox` (type: `array`):

Optional shared toolbox used by scenarios that do not carry their own candidate tools.

## `scenarios` (type: `array`):

Buyer-supplied evaluation records. Each item produces one benchmark record, including incomplete records that need more context.

## `taskIntent` (type: `string`):

Optional buyer label carried into the run summary.

## `sinceLastRun` (type: `boolean`):

Optional recurring mode that omits records whose stable keys were already delivered.

## `maxItems` (type: `integer`):

Optional. Leave empty to save every record the source returns.

## `startUrls` (type: `array`):

Public source URL for Try.

## Actor input object example

```json
{
  "toolbox": [],
  "scenarios": [],
  "taskIntent": "mcp-tool-choice-benchmark",
  "sinceLastRun": false,
  "startUrls": [
    {
      "url": "https://registry.npmjs.org/@modelcontextprotocol/sdk/latest"
    }
  ]
}
```

# Actor output Schema

## `results` (type: `string`):

No description

# API

You can run this Actor programmatically using our API. Below are code examples in JavaScript, Python, and CLI, as well as the OpenAPI specification and MCP server setup.

## JavaScript example

```javascript
import { ApifyClient } from 'apify-client';

// Initialize the ApifyClient with your Apify API token
// Replace the '<YOUR_API_TOKEN>' with your token
const client = new ApifyClient({
    token: '<YOUR_API_TOKEN>',
});

// Prepare Actor input
const input = {
    "toolbox": [],
    "scenarios": [],
    "taskIntent": "mcp-tool-choice-benchmark",
    "sinceLastRun": false,
    "startUrls": [
        {
            "url": "https://registry.npmjs.org/@modelcontextprotocol/sdk/latest"
        }
    ]
};

// Run the Actor and wait for it to finish
const run = await client.actor("zentrafoundry/zentra-mcp-confusion-lab").call(input);

// Fetch and print Actor results from the run's dataset (if any)
console.log('Results from dataset');
console.log(`💾 Check your data here: https://console.apify.com/storage/datasets/${run.defaultDatasetId}`);
const { items } = await client.dataset(run.defaultDatasetId).listItems();
items.forEach((item) => {
    console.dir(item);
});

// 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/js/docs

```

## Python example

```python
from apify_client import ApifyClient

# Initialize the ApifyClient with your Apify API token
# Replace '<YOUR_API_TOKEN>' with your token.
client = ApifyClient("<YOUR_API_TOKEN>")

# Prepare the Actor input
run_input = {
    "toolbox": [],
    "scenarios": [],
    "taskIntent": "mcp-tool-choice-benchmark",
    "sinceLastRun": False,
    "startUrls": [{ "url": "https://registry.npmjs.org/@modelcontextprotocol/sdk/latest" }],
}

# Run the Actor and wait for it to finish
run = client.actor("zentrafoundry/zentra-mcp-confusion-lab").call(run_input=run_input)

# Fetch and print Actor results from the run's dataset (if there are any)
print(f"💾 Check your data here: https://console.apify.com/storage/datasets/{run.default_dataset_id}")
for item in client.dataset(run.default_dataset_id).iterate_items():
    print(item)

# 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/python/docs/quick-start

```

## CLI example

```bash
echo '{
  "toolbox": [],
  "scenarios": [],
  "taskIntent": "mcp-tool-choice-benchmark",
  "sinceLastRun": false,
  "startUrls": [
    {
      "url": "https://registry.npmjs.org/@modelcontextprotocol/sdk/latest"
    }
  ]
}' |
apify call zentrafoundry/zentra-mcp-confusion-lab --silent --output-dataset

```

## MCP server setup

```json
{
    "mcpServers": {
        "apify": {
            "type": "http",
            "url": "https://mcp.apify.com/?tools=fetch-actor-details,zentrafoundry/zentra-mcp-confusion-lab"
        }
    }
}
```

The hosted server signs you in with OAuth on first connect, so no API token belongs in this config. Clients without OAuth support can send an `Authorization: Bearer <APIFY_API_TOKEN>` header instead, using a token from API & Integrations in Apify Console (https://console.apify.com/settings/integrations).

## OpenAPI specification

Download the OpenAPI definition: https://api.apify.com/v2/actors/7lRjxdKWe7Usi2lte/builds/rwYxmrV5loOfezutQ/openapi.json