GA Release

The Multi-Agent WebGPU Engine & Interactions API are now generally available.

Part 8: Prompt Queue, Forking & Fallback Chains

Batch overnight builds, branch chat histories safely, and ensure continuous availability with automated API fallback chains.

Category: Getting Started • Read Time: 19 min read • Updated: August 2026

1. Three Workflow Bottlenecks This Part Solves

A. Waiting on Generations

Sending a prompt forces you to wait before queuing follow-up instructions. Prompt Queue enables continuous batching.

B. Risk of Overwriting Progress

Trying alternative prompt directions can ruin a working thread. Forking creates non-destructive branch points.

C. Rate Limits & 429 Errors

Cloud quota caps block development mid-day. Fallback Chains auto-switch providers instantly.

2. Prompt Queue — Your Assembly Line

While an active generation is running, type your next instruction into the composer input. The main action button shifts to an indigo Queue Response button.

Prompt Queue Manager Features:
  • Isolated Staged Assets: Each queued prompt preserves its own attached files, screenshots, or CSVs independently.
  • Reorder & Delete: Drag queued cards to adjust execution order or click trash to remove.
  • Pause Queue: Complete current active turn and temporarily halt remaining queued tasks.
  • Queue Backoff Interval: Configure a 0–60 second delay in Settings → AI Engine to pace execution and prevent rate limits.
  • Last Failed Recovery: Failed queued tasks are moved to a recovery drawer for instant 1-click retry.

3. Forking / Branching — Never Lose a Good Version

Hover under any user or assistant message and click Fork (GitBranch icon).

Non-Destructive Branching: Creates a new chat thread containing history up to that exact fork point while preserving your original chat intact.

Comparison Workflows: Fork a prompt 3 times to test different design directives (e.g. Minimal vs Brutalist vs Glassmorphic) or compare multiple LLM models side by side.

4. Fallback Chains — Never Get Blocked by 429 Again

Configure automated failover mechanisms in Model Organizer under LLM Fallback Chains & Resiliency:

  • Auto-Chain All: Automatically links all equipped cloud, Puter.js, and offline local models into a failover mesh with 1 click.
  • Sequential Execution: If Primary (e.g., Gemini 3.6 Flash) hits a 429 quota error, Accelerated Logic AI displays an amber notification banner and instantly routes to Fallback 1 (e.g., DeepSeek V4) then Fallback 2 (e.g., WebLLM offline).
  • Puter Sign-In Safety: If a Puter model requires re-authentication, the app triggers an interactive auth popup rather than skipping silently to the next fallback.

5. Putting All Three Together — A Real Workflow

Batch Production Setup Example:
  1. Equip Gemini 3.5 Flash, DeepSeek V4, and WebLLM 3B. Click Auto-Chain All.
  2. Create a Folder (e.g., Client Landing Pages) with Folder Memory: React + Tailwind + lucide-react.
  3. Stage client1.pdf + prompt "Build landing page for Client 1" → click Queue Response.
  4. Stage client2.png + prompt "Build landing page for Client 2" → click Queue Response.
  5. Walk away while Accelerated Logic AI executes all jobs sequentially with resilient rate-limit failover.