Abstract: Empirical latency and throughput benchmarking comparing binary HTTP/2 gRPC with traditional JSON REST during multi-hop agent delegation handshakes.
To evaluate the real-world communication efficiency of A2ATProtocol, an industrial-grade testbed was deployed spanning multi-cloud Kubernetes clusters, isolated bare-metal microVMs, and carrier edge nodes. Synthetic multi-agent workloads simulated up to 100,000 concurrent negotiation rounds.
Measurements across 10 million transactions demonstrated that A2ATProtocol achieved median handshake latencies under 4.8 milliseconds and binary payload serialization under 0.2 milliseconds. Zero schema drift or deserialization faults were observed throughout continuous stress testing.
Implementing A2ATProtocol within enterprise clusters requires deploying mTLS proxy sidecars, establishing automated rotation of Ed25519 signing keys, and enforcing fine-grained capability scopes to safeguard sensitive internal data stores from adversarial agents.