ClutchCall is a real-time platform with five typed modalities: voice, streams, robotics, games, and data. All five modalities use the same MoQT (Media-over-QUIC Transport) relay mesh. Native, hermetically-built SDKs ship for TypeScript, Python, Go, Rust, Java, and .NET. A Unity UPM transport package also ships. All bindings share one C++23 core. The core emits the same wire envelope in every language. Because of this, a Python publisher, a browser subscriber, and a Unity client interoperate without translation.

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What’s in this site

Modalities

The five-modality model: voice, streams, robotics, games, and data. This page tells you when to use each modality.

Quickstart

Build a working app in less than five minutes. Pick a modality and follow the steps.

SDK Reference

A reference for each language. It covers every modality and every method, with end-to-end examples.

Architecture

QUIC, WebTransport, MoQT, the C++ core, and the relay mesh.

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Modalities at a glance

The platform also has these surfaces:

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One substrate

The same call can flow through any combination of runtimes:
All runtimes speak MoQT directly. The relay routes by capability. A capability is an open-ended intent string, for example voice/opus, game.state, or ros.reliable. A track can reach any consumer that registered for that capability. The publisher does not need to know that the consumers exist.

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Polyglot, but one substrate

All SDKs are built hermetically. They share the same C++ core, the same wire envelope, and the same modality conventions. Cross-language calls work without extra steps.