What is Protocol?
Protocol — The rules of engagement by which agents and systems establish identity, authority, and capability.
A protocol fixes how independent parties interact without trusting each other in advance. For agentic systems, protocols govern how one agent proves who it is, what it is allowed to do, and how it binds to another's capabilities — the connective tissue of an open agent ecosystem.
Where protocol sits in the stack
In the four-layer architecture of the agentic web, protocol is a Meta-category (L3) concept — it consolidates fan-out within a category. See the thesis for how the layers compound.
Protocol in the portfolio
190 positions in the Semantic Substrate portfolio carry the Protocol primitive — 86 available individually, 104 held as a coordinated set. Explore the Protocol cluster →
Quick answers
- What is Protocol in agentic systems?
- The rules of engagement by which agents and systems establish identity, authority, and capability.
- Where does Protocol sit in the agentic stack?
- Protocol sits at the Meta-category (L3) layer — it consolidates fan-out within a category.
- How many Protocol domain positions exist in the Semantic Substrate portfolio?
- 190 positions carry the Protocol primitive — 86 available individually, the rest held as a coordinated set.
Related primitives
ConstitutionalInfrastructureObservabilityOrchestrationIntelligenceAttestationAttributionConvergenceIntegrationAutonomousCapabilityDelegationFederationGovernanceProvenanceSettlementAuthorityExecutionPrecedentSovereignSubstrateDecisionOverridePlatformSemanticTemporalBindingCustodyEconomyLineageProcessQuantumRoyaltySpatialUnifiedNeuralSafetyTreatyAgentGhostModelSwarmTrustTwin
Held in the portfolio under Protocol.