XCP

XCP is a programmable execution platform specifically designed for the Xbox Series X in Developer Mode. This innovative system allows developers to assess the limits of Xbox as a deterministic computing target, merging capabilities from both Windows and Xbox into a cohesive development experience.

Key Features

Integrated Development Stack

The architecture encompasses two main components:

• XCP Studio on the Windows PC, which enables development and validation of projects and workloads.
• XCP Worker on the Xbox Series X, which acts as the execution environment that processes the validated workloads inside the UWP sandbox and provides detailed execution results.

Unit Process Flow

XCP facilitates a practical workflow:

Windows PC
┌──────────────────────────────┐
│          XCP Studio          │
│                              │
│  project / workload          │
│  adaptation                  │
│  validation                  │
│  capability planning         │
└──────────────┬───────────────┘
               │
               │ admitted package / execution request
               ▼
Xbox Series X — Developer Mode
┌──────────────────────────────┐
│          XCP Worker          │
│                              │
│  CPU execution               │
│  GPU execution               │
│  XVM                         │
│  storage / state             │
│  observation                 │
└──────────────┬───────────────┘
               │
               │ result + evidence
               ▼
┌──────────────────────────────┐
│      verification layer      │
│                              │
│  what executed?              │
│  what matched?               │
│  what diverged?              │
│  what was never proved?      │
└──────────────────────────────┘

Agent-Native Development

XCP supports both human developers and coding agents utilizing a shared project format, maintaining a bounded lifecycle for direct collaboration. Each agent can:

• Discover runtime capabilities
• Author project intent
• Validate and build artifacts
• Submit workloads to the XCP Worker
• Inspect structured errors and outcomes

Evidence-Driven Execution

XCP distinguishes itself by treating execution evidence as a critical component, ensuring that every execution is verified and can be traced back to a concrete identity and evidence implementation.

Extensibility Beyond Xbox

While initially built for Xbox, XCP's modular architecture allows for potential application across different targets and source adapters. This design flexibility opens the door for future expansions and integrations extending its powerful capabilities.

Robust Project Management

The system supports comprehensive management of projects through:

• XCP Studio: Manage project creation, validation, and execution preparations seamlessly on Windows.
• XCP Worker: Handles execution scopes on Xbox, tracking evidence and results meticulously.

Technical Overview

XCP includes several core components:

• XCP Studio: A Windows-based WinUI environment for project lifecycle management.
• XCP Worker: A native runtime tailored for execution within the Xbox ecosystem.
• XVM: A bounded virtual machine allowing programmable execution tailored to the needs of complex tasks.
• Project Adaptation: Capabilities to adapt existing software projects to fit within XCP’s frameworks, starting with support for specific versions of Godot.
• Evidence Surface: A mechanism ensuring fidelity and correctness in execution and outcomes.

Utilizing this architecture, XCP demonstrates not only practical implementation but also active engagement with the development community to explore new coding paradigms and possible project adaptations. For those interested in contributing to the project or utilizing this system in their development processes, XCP offers extensive documentation along with paths for meaningful engagement.