{
 "id": "https://redfinchadvisory.com/lexicon/a2a",
 "slug": "a2a",
 "prefLabel": "A2A",
 "altLabel": [
  "Agent2Agent",
  "Agent-to-agent protocol"
 ],
 "hiddenLabel": [],
 "definition": "An open standard, created by Google and now run by the Linux Foundation, that lets agents from different vendors communicate and work together.",
 "scopeNote": "The A2A Protocol project (Linux Foundation) says: “The Agent2Agent (A2A) Protocol is an open standard for seamless communication and collaboration between AI agents.”",
 "tier": "reference",
 "group": "Connections and systems",
 "broader": [],
 "narrower": [],
 "related": [
  {
   "id": "https://redfinchadvisory.com/lexicon/model-context-protocol",
   "type": "pair"
  }
 ],
 "links": [
  {
   "id": "https://redfinchadvisory.com/lexicon/agent",
   "label": "connects agent to",
   "direction": "out"
  }
 ],
 "modified": "2026-10-21",
 "markdown": "https://redfinchadvisory.com/lexicon/a2a.md",
 "inScheme": {
  "id": "https://redfinchadvisory.com/lexicon",
  "version": "1.0",
  "currentAsOf": "2026-10-21"
 }
}