What is Mainframe building?

Mainframe is developing a new generation of operating systems built around actions rather than traditional apps. It uses AI to perform tasks proactively instead of waiting for user commands within complex applications. The vision is for computers to anticipate needs and act on them.

How does Mainframe differ from app-based operating systems?

Conventional operating systems organize functionality into separate apps that users must navigate manually. Mainframe instead centers the experience on actions, with AI executing tasks autonomously. This is meant to move beyond the app-centric interface model.

What does an action-centric interface mean?

An action-centric interface focuses on what the user wants to accomplish rather than which app to open. Mainframe's AI is designed to carry out those actions directly, reducing the steps a user takes. The goal is to make technology more accessible and efficient.

What is Mainframe's broader vision?

Mainframe envisions a future where computers anticipate user needs and execute actions autonomously. By redefining the user experience around AI-driven actions, it aims to make computing simpler and more proactive. This represents a rethinking of how operating systems work.

Who would benefit from Mainframe's approach?

Mainframe's action-oriented, AI-driven approach is aimed at making technology more accessible and efficient for users generally. People who find app-heavy workflows cumbersome could benefit from a system that acts proactively. The company frames this as a broad shift in the user experience.

Startups AI Agents Mainframe

Mainframe

Active

Building interfaces for the future where operating systems are built around actions, not apps, powered by AI.

📅 Founded 2026 👥 1-10 🏷 AI Agents

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Total raised

—

Stage

—

Team

1-10

since 2026

Pricing

Enterprise

free plan

Founded

2026

Agent-ready

—

About Mainframe

What Mainframe does

Mainframe is an AI tool that turns the work done by coding agents into short, shareable videos for teams. It connects to agents such as Claude Code, Cursor, Codex, and others through MCP and a skill integration, letting an agent request a generated video or upload a pre-recorded one. The result is a shareable link teammates can watch instead of reading long text recaps.

Key capabilities

Generates narrated videos directly from agent activity via MCP
Custom voice narration, avatar personalization, and branding (color palette and typeface)
Shareable links for team viewing
Free Starter tier and a paid Pro tier with additional monthly generations

Who it's for

Mainframe is aimed at engineering and product teams that work with AI agents and need to communicate progress, pull-request changes, design tradeoffs, documentation walkthroughs, and weekly recaps to a wider audience. By converting agent output into video, it helps distributed teams stay aligned without manual reporting.

Key capabilities

AI-powered proactive task execution

Action-centric operating system design

Reduced reliance on traditional apps

Intuitive interfaces

Autonomous computing capabilities

Seamless integration of AI

Technology stack

3detected May 30, 2026

Est. monthly stack spend ~$700/mo

Framework

Next.jswebpack

Infra

VercelAWS

LLM

GPT-4

Agent readiness

65/100

Developing

MCP server

Public API

Webhooks

OAuth 2.0

SDKs

No public agent surfaces detected yet.

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Frequently asked

What is Mainframe building?: Mainframe is developing a new generation of operating systems built around actions rather than traditional apps. It uses AI to perform tasks proactively instead of waiting for user commands within complex applications. The vision is for computers to anticipate needs and act on them.
How does Mainframe differ from app-based operating systems?: Conventional operating systems organize functionality into separate apps that users must navigate manually. Mainframe instead centers the experience on actions, with AI executing tasks autonomously. This is meant to move beyond the app-centric interface model.
What does an action-centric interface mean?: An action-centric interface focuses on what the user wants to accomplish rather than which app to open. Mainframe's AI is designed to carry out those actions directly, reducing the steps a user takes. The goal is to make technology more accessible and efficient.
What is Mainframe's broader vision?: Mainframe envisions a future where computers anticipate user needs and execute actions autonomously. By redefining the user experience around AI-driven actions, it aims to make computing simpler and more proactive. This represents a rethinking of how operating systems work.
Who would benefit from Mainframe's approach?: Mainframe's action-oriented, AI-driven approach is aimed at making technology more accessible and efficient for users generally. People who find app-heavy workflows cumbersome could benefit from a system that acts proactively. The company frames this as a broad shift in the user experience.

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About Mainframe

What Mainframe does

Key capabilities

Who it's for

Key capabilities

Technology stack

Agent readiness

Alternatives

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Cursor

DataRobot

Perplexity

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Frequently asked

Explore more around Mainframe

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