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Observatory · Catalog v0.4.0

Protocol sources

Research index, not a benchmark ranking. Records distinguish source documentation from independently reproduced measurements. No record on this page is marked independently verified.

Showing 6 of 6 records

MCP contributors · Source linked

Model Context Protocol

Open protocol for AI applications to connect with tools and contextual resources.

Version: Versioned specification; pin pending

Evidence: Documentation only · Independent system evaluation: Not performed

Source review: Pending · Source snapshot: Not captured

No GC interoperability test has been run.

Primary source ↗

A2A contributors · Source linked

Agent2Agent (A2A)

Agent communication and interoperability protocol.

Version: Versioned specification; pin pending

Evidence: Documentation only · Independent system evaluation: Not performed

Source review: Pending · Source snapshot: Not captured

No GC interoperability test has been run.

Primary source ↗

Governance Commons · Needs review

GC Agent Matrix

Governance and orchestration specification, included as first-party context rather than an independently tested protocol.

Version: README identifies 1.4.0

Evidence: Documentation only · Independent system evaluation: Not performed

Source review: Pending · Source snapshot: Not captured

First-party; no interoperability or conformance claim.

Primary source ↗

W3C · Needs review

Verifiable Credentials Data Model

Data model for verifiable claims and credentials.

Version: 2.0 specification

Evidence: Documentation only · Independent system evaluation: Not performed

Source review: Pending · Source snapshot: Not captured

Specification status and implementation conformance have not been independently tested by GC.

Primary source ↗

CNCF · Needs review

CloudEvents

Common event metadata specification for event-driven systems.

Version: Specification version pending

Evidence: Documentation only · Independent system evaluation: Not performed

Source review: Pending · Source snapshot: Not captured

Not an agent-specific protocol; relevant to event evidence interoperability.

Primary source ↗

OpenTelemetry · Needs review

OpenTelemetry

Observability specifications and semantic conventions for telemetry.

Version: Specification version pending

Evidence: Documentation only · Independent system evaluation: Not performed

Source review: Pending · Source snapshot: Not captured

Telemetry support does not establish governance compliance.

Primary source ↗
Methodology: A primary-source link is not proof of a current model identifier, interoperability, security, conformance or performance. All entries require editorial verification and dated snapshots before claims or comparative rankings can be published.