Longitudinal view of the tracked AI-agent ecosystem, computed from 48 daily registry snapshots (since 2026-05-23). Dashed red markers are methodology changes — score-derived series restart there instead of pretending a redefinition is a migration. Quarterly summaries publish as State of Agent Trust reports.
Actively listed agents in the registry each day.
Agents with public evidence of an implemented MCP server — adoption of the structured tool protocol.
Agents per grade band. Lines restart at methodology changes — a cutover redefines the bands, so connecting across one would fake a migration.
Agents depending on each of the currently-largest runtime providers (detected from manifests and credential markers).
Agents with no repository push for 90+ days — the abandonment signal.