By name: a2a description: Google A2A (Agent-to-Agent) Protocol — lets Trevor discover, communicate with, and be discovered by other AI agents. JSON-RPC 2.0 over HTTP. Linux Foundation project, Apache 2.0. metadata: author: "Google / Linux Foundation" version: "1.0.3" displayName: A2A Protocol difficulty: intermediate
A2A — Agent-to-Agent Protocol
Trevor speaks A2A. Other agents can discover and task Trevor. Trevor can discover and task other agents.
Architecture
Agent A ──discover──► Agent Card (/.well-known/agent-card.json)
Agent A ──task──────► JSON-RPC endpoint (/)
Agent A ◄──result─── JSON-RPC response
Trevor's Agent Card
- Name: Trevor — Threat Research and Evaluation Virtual Operations Resource
- Version: 2.0.0
- Skills: daily_brief, market_scan, osint_query, source_discovery
- Protocol: JSON-RPC 2.0 over HTTP
Server
Start the A2A server (exposes Trevor to other agents):
python3 skills/a2a/server.py --port 9999
Agent card available at http://host:9999/.well-known/agent-card.json
Client
Discover and task other agents:
# Discover an agent
python3 skills/a2a/client.py discover http://other-agent:9999 --save --label "ResearchBot"
# Send a task
python3 skills/a2a/client.py task http://other-agent:9999 "Analyze Iran deal probability" --skill osint_query
# List known agents
python3 skills/a2a/client.py list
Known Agents Registry
Stored in config/a2a/known_agents.json. Trevor automatically uses known agents for:
- Cross-referencing intelligence with specialist agents
- Delegating compute-heavy tasks
- Discovering new data sources