release: v0.20.0 — visual agent builder#37
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johnnichev merged 1 commit intomainfrom Mar 31, 2026
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Zero-install drag-drop AgentGraph builder. Self-contained HTML, no React, no CDN. Drag START/END/Agent nodes, click ports to connect, edit properties, and export Python or YAML code. selectools serve --builder # builder only selectools serve agent.yaml --builder # agent + builder New: BuilderServer (standalone, no agent needed), --builder flag on serve CLI, /builder endpoint on AgentServer, examples/76_visual_builder.py. 9 new tests, 3144 total.
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Summary
selectools serve --builder— new CLI flag, no config file neededBuilderServer— standalone server class (no agent required)--builderflag oncreate_app()andAgentServerfor combined serve + builder76_visual_builder.py, 9 new testsChecklist