THE BUILD
SECTION 08
ISSUE 001
Multi-Agent Systems Need System Evals
Projection: Anthropic exposes coordinated agent teams; A2A supplies a protocol for inter-agent exchange. Testing each model separately cannot reveal handoff loss, correlated mistakes, or resource contention in that system. System evaluation should compare the full team against simpler baselines and fail the thesis whenever coordination adds cost without outcome gain.
Why this idea is here
What the evidence establishes.
Anthropic documents effort controls, long-running dynamic workflows, parallel subagents, computer use, and tool efficiency for Claude Opus 4.8; The A2A community releases v1.0 as a stable, production-ready agent-interoperability standard that complements tool-and-context protocols. These are source-backed premises for this inference; they do not by themselves prove broad adoption or the eventual outcome.
Source ledger
Read the sources.
- S01Introducing Claude Opus 4.8
official model release / published 2026-05-28 / retrieved 2026-07-10
- S02A2A Protocol v1.0: production-ready agent interoperability
official current protocol release / dated Live source · verified 2026-07-10 / retrieved 2026-07-10