A marketplace of AI skills that actually run: 593 skills ship inside the Nexus Runner desktop app, reading your files, processing them, and producing charts and conclusions on your own machine. It executes, it doesn't just chat.

How is this different from Zapier or just asking a large model?

Zapier connects cloud apps through APIs; we work on the files on your machine. A model hands you prose; we hand you a table, a chart and a conclusion you can check. A skill is a program with an input contract, not a prompt.

No. Skills execute on your computer, source files never leave it, and output is written straight to your folder. Content is sent to the built-in model only when you use AI chat or a skill that needs a model.

What do I need to install?

Just Nexus Runner — the runtime ships with the app. No Python setup, no code.

How much is the free tier?

200 Nex per month on signup, reset at the start of each month, with every skill available and no tier gates. The four Runner tutorial skills are not billed.

How many runs does Pro at CNY 49 cover?

3,000 Nex per month. Skills bill per run and most cost 3-10 Nex, which works out to several hundred runs. Each skill's exact price is on its detail page.

Which Windows versions are supported?

64-bit Windows 10 and Windows 11. Windows is the only desktop client we ship.

How do I connect it to Claude Desktop or Cursor?

Nexus Runner speaks MCP: register it as an MCP server in your client and the skills show up as tools. The docs page walks through the setup step by step.

Where do skills come from? Can I build my own?

Skills are maintained by the platform and its creators, each with an input contract and sample data. You can also build your own in the Runner workbench — those stay yours, never published or encrypted.

Do you offer refunds?

Subscriptions can be refunded under our refund policy; the conditions and process are on the refund policy page. Nex already consumed is not refundable.

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More AI Tools

More AI Tools on MCP Nexus: A/B Test Analyzer, Cohort Retention Steward, API Scribe, Feedback Scribe, Arch Scribe, UI Spec Scribe — run locally, data…

Start free Browse skills

Start free — 200 Nex/month

Skills in this bundle

1/6

A/B Test Analyzer

Statistical analysis for A/B experiments -- supports binary (chi-squared, z-test) and continuous metrics (Welch's t-test, Mann-Whitney U), with power analysis and sample size calculator

Skill5 Nex

2/6

Cohort Retention Steward

Analyze subscription billing data for MRR decomposition, cohort retention matrices, churn rates, ARPU, and LTV from Stripe or similar CSV exports

Skill5 Nex

3/6

API Scribe

Generate comprehensive API documentation from source code or OpenAPI/Swagger specs, supporting multiple output formats including Markdown and HTML.

Skill3 Nex

4/6

Feedback Scribe

Generates structured, professional performance feedback documents from raw evaluation notes. Supports multiple tones and bilingual output.

Skill5 Nex

5/6

Arch Scribe

Generate comprehensive architecture documentation from system design input, including components, data flow, and technology stack.

Skill5 Nex

6/6

UI Spec Scribe

Generate comprehensive UI component specification documents from design files or descriptions, including dimensions, colors, interactions, states, and accessibility guidelines.

Skill3 Nex

See it in action

Download demo video (MP4)

Quick answer

More AI Tools on MCP Nexus: A/B Test Analyzer, Cohort Retention Steward, API Scribe, Feedback Scribe, Arch Scribe, UI Spec Scribe — run locally, data… MCP Nexus orchestrates 6 skills (A/B Test Analyzer, Cohort Retention Steward, API Scribe, Feedback Scribe and more) into one reproducible workflow that runs on your machine, keeps data in your network, and delivers results in minutes.

A/B Test Analyzer: Statistical analysis for A/B experiments -- supports binary…
Cohort Retention Steward: Analyze subscription billing data for MRR decomposition, co…
API Scribe: Generate comprehensive API documentation from source code o…
Feedback Scribe: Generates structured, professional performance feedback doc…
Arch Scribe: Generate comprehensive architecture documentation from syst…
UI Spec Scribe: Generate comprehensive UI component specification documents…

What is More AI Tools with MCP Nexus

More AI Tools chains 6 skills (A/B Test Analyzer, Cohort Retention Steward, API Scribe, Feedback Scribe, Arch Scribe, UI Spec Scribe) into one reproducible workflow covering the key steps from input to result, running fully on-premises with data staying in your network, for teams that need More AI Tools on MCP Nexus: A/B Test Analyzer, Co… on demand.

How it works

1Step 1

A/B Test Analyzer

Statistical analysis for A/B experiments -- supports binary (chi-squared, z-test) and continuous me…

2Step 2

Cohort Retention Steward

Analyze subscription billing data for MRR decomposition, cohort retention matrices, churn rates, AR…

3Step 3

API Scribe

Generate comprehensive API documentation from source code or OpenAPI/Swagger specs, supporting mult…

4Step 4

Feedback Scribe

Generates structured, professional performance feedback documents from raw evaluation notes. Suppor…

MCP Nexus vs alternatives

	MCP Nexus	Manual / Excel	Generic AI / Cloud tools
Pricing	Free tier, metered by calls	Many manual hours	Per-seat plus per-volume fees
Local execution	Yes, data stays on-premises	Manual process	No, data leaves your network
Setup time	Minutes to first run	Days, experience-dependent	~1 week integration and training

Start free Browse skills