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June 25, 2026 The sidebar panel agent is no longer Claude-only. Pick a provider — Claude or ChatGPT — and the agent runs on your own subscription (no API keys), driving your live canvas at full feature parity.

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Multi-provider agent: Claude + ChatGPT/Codex at full parity

  • Pick a provider, not a port. A backend picker (Claude / ChatGPT chips) starts the matching background orchestrator, each on its own loopback bridge port. Switching providers starts a fresh chat (sessions aren’t shared) with a per-backend composer placeholder. Sign in once per provider: claude or codex login.
  • Provider-neutral AgentBackend port. The orchestrator is decoupled from the provider via dependency injection, with two adapters: ClaudeBackend (Claude Agent SDK) and CodexBackend (OpenAI Codex over the codex app-server JSON-RPC protocol). A capability matrix degrades the panel gracefully — e.g. conversation-rollback is Claude-only for now; the code/graph rollback works on both.
  • Full Codex tool parity. The panel_* live-canvas tools live in one shared list, registered onto both the in-process Claude SDK server and a loopback streamable-HTTP MCP the orchestrator hosts for Codex. The headless comfyui MCP is injected into both backends. The surface — including the destructive-confirm gating — is identical.
  • Knowledge parity. list_skills / read_skill / list_packs / read_pack_workflow / list_workflow_templates expose the bundled model-family skills, installer packs, and the connected server’s official templates to any backend, so ChatGPT has the same expertise Claude loads natively.
  • One-shot panel_load_workflow. Load a full workflow onto the live canvas in a single call — by bundled pack name (read server-side, never shuttled through chat) or by graph JSON — captured as an undo point.
  • Local-GPU vs paid-API guardrail (check_workflow_runtime). Classifies a workflow as local (free) or api/mixed/unknown (paid). Bundled packs are local/free; for ad-hoc graphs the agent asks before spending paid API credits.
Read more: Backends / providers · Skills, Packs & Runtime Cost · Sidebar Panel · design doc agent-backend-injection.md.