Evidence over theater.
A curated view of the public layer: software, research, specifications, documentation, professional evidence, and design language.
Public surface
Every link below points to a verified public GitHub repository from the CrossingKey profile.CrossingKey MCP
Agent-native MCP for governed commerce, x402 payments, paid capabilities, and verifiable receipts.
Open repository ↗ 02 / ResearchPublic Research
Research into the systems that emerge between human intent and machine action.
Open repository ↗ 03 / StandardsOpen Specifications
Public conventions for authority boundaries, execution evidence, versioning, and interoperability.
Open repository ↗ 04 / DocumentationDeveloper Documentation
Engineering guidance for the systems and interfaces that support the CrossingKey public surface.
Open repository ↗ 05 / EvidenceProfessional Evidence
A public implementation and verification record across the CrossingKey build.
Open repository ↗ 06 / DesignDesign Language
A future-antiquity visual and interaction reference for recognizable, disciplined surfaces.
Open repository ↗Machine commerce with a human boundary.
The public CrossingKey MCP repository describes an agent-native interface for governed commerce, x402 payments, paid capabilities, and verifiable receipts.
Its operating principle is simple: discovery is free, evaluation is safe, payment is explicit, authority stays bounded, execution is deterministic, and fulfillment is verifiable.
Turn the next idea into something inspectable.
Bring a product, workflow, agent, or research question. We can start with the actual boundary and work outward.