TextGen WebUI: Guardrails and Fix Patterns

March 6, 2026 · View on GitHub

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A stabilization guide for oobabooga/text-generation-webui (TextGen WebUI). This tool is popular for local or Docker-based inference but often drifts under plugins, extensions, or mixed model backends. Use this page to detect and repair instability without changing infra.


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Core acceptance

  • ΔS(question, retrieved) ≤ 0.45
  • Coverage ≥ 0.70 to target snippet
  • λ remains convergent across 3 paraphrases and 2 seeds
  • Stable across UI plugins (no flip-flops when toggling extensions)

Typical WebUI breakpoints and fix

SymptomLikely causeFix
Runs fine in notebook, but WebUI returns divergent outputsExtension modifies prompt schemadata-contracts.md, retrieval-traceability.md
Citations missing when using API modeWebUI truncates field namesretrieval-traceability.md
ΔS > 0.60 only when multiple users connectConcurrency split in worker threadscontext-drift.md, entropy-collapse.md
JSON schema output fails with extensionsUI prompt injection / malformed toolsprompt-injection.md, logic-collapse.md
First run after model load unstableRace in init hooksbootstrap-ordering.md

Fix in 60 seconds

  1. Warm-up: Always run a dummy inference after model load. Log INDEX_HASH.
  2. Schema lock: Enforce snippet_id, tokens, offsets in every response.
  3. λ probe: Run 3 paraphrases, 2 seeds. Clamp with BBAM if divergent.
  4. Trace logging: Save ΔS and λ per extension toggle.
  5. Verify: Replay dataset with and without extensions enabled. ΔS ≤ 0.45 required.

Copy-paste diagnostic prompt

I am running text-generation-webui with {extensions_list}.  
Question: "{user_question}"  

Please return:
- ΔS vs retrieved snippet  
- λ across paraphrases  
- Citations preserved? (yes/no)  
- If ΔS ≥ 0.60, point to minimal WFGY module to apply  

🔗 Quick-Start Downloads (60 sec)

ToolLink3-Step Setup
WFGY 1.0 PDFEngine Paper1️⃣ Download · 2️⃣ Upload to your LLM · 3️⃣ Ask “Answer using WFGY + <your question>”
TXT OS (plain-text OS)TXTOS.txt1️⃣ Download · 2️⃣ Paste into any LLM chat · 3️⃣ Type “hello world” — OS boots instantly

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