qwen_agent/skills/developing/rag-retrieve-no-citation/hooks/retrieval-policy-forbidden-self-knowledge.md

# Retrieval Policy (Forbidden Self-Knowledge)

## 0. Task Classification

Classify the request before acting:
- **Knowledge retrieval** (facts, summaries, comparisons, prices, lists, timelines, extraction, etc.): follow this policy strictly.
- **Codebase engineering** (modify/debug/inspect code): normal tools (Glob, Read, Grep, Bash) allowed.
- **Mixed**: use retrieval tools for the knowledge portion, code tools for the code portion only.
- **Uncertain**: default to knowledge retrieval.

## 1. Critical Enforcement

For knowledge retrieval tasks, **this policy overrides generic codebase exploration behavior**.

- **Prohibited answer source**: the model's own parametric knowledge, memory, prior world knowledge, intuition, common sense completion, or unsupported inference.
- **Prohibited tools**: `Glob`, `Read`, `LS`, Bash (`ls`, `find`, `cat`, `head`, `tail`, `grep`, etc.) — these are forbidden even when retrieval results are empty/insufficient, even if local files seem helpful.
- **Allowed tools only**: skill-enabled retrieval tools, `rag_retrieve`. No other source for factual answering.
- Local filesystem is a **prohibited** knowledge source, not merely non-recommended.
- Exception: user explicitly asks to read a specific local file as the task itself.
- If retrieval evidence is absent, insufficient, or ambiguous, **do not fill the gap with model knowledge**.

## 2. Core Answering Rule

For any knowledge retrieval task:

- Answer **only** from retrieved evidence.
- Treat all non-retrieved knowledge as unusable, even if it seems obviously correct.
- Do NOT answer from memory first.
- Do NOT "helpfully complete" missing facts.
- Do NOT convert weak hints into confident statements.
- If evidence does not support a claim, omit the claim.

## 3. Retrieval Order and Tool Selection

Execute **sequentially, one at a time**. Do NOT run in parallel. Do NOT probe filesystem first.

1. **Skill-enabled retrieval tools** (use first when available)
2. **`rag_retrieve`**

- Retrieval must happen **before** any factual answer generation.
- After each step, evaluate sufficiency before proceeding.

### First-Call Success Principle

- The first retrieval call is expected to return sufficient results for most questions.
- Your default assumption should be: **one call is enough**.
- Additional calls are the exception, not the norm. Only retry when results are genuinely useless (empty, error, completely off-topic).
- **Never retry just to "find better results" or "get more comprehensive coverage".** Good enough is sufficient.

## 4. Query Preparation

- Do NOT pass raw user question unless it already works well for retrieval.
- Rewrite for recall: extract entity, time scope, attributes, intent. Add synonyms, aliases, abbreviations, historical names, category terms.
- Expand list/extraction/overview/timeline queries more aggressively. Preserve meaning.

## 5. Retrieval Breadth (`top_k`)

- Apply `top_k` only to `rag_retrieve`. Choose the appropriate value upfront to maximize first-call success.
- Use `50` for simple fact lookup or moderate synthesis, comparison, summarization, disambiguation.
- Use `100` for broad recall (comprehensive analysis, scattered knowledge, multi-entity, list/catalog/timeline).
- If unsure, use `50`. Only escalate to `100` on the retry call if first results are insufficient.

## 6. Result Evaluation

**Maximum 3 retrieval calls per question.** After each call, evaluate immediately:

### Sufficient — answer immediately, no more calls

ANY of the following means results are sufficient — STOP and answer now:
- The core entity/topic in the user's question appears in the results.
- There is ANY direct or indirect evidence relevant to the user's question.
- Results are partially relevant, even if not perfectly comprehensive.
- You can compose a meaningful answer (even a partial one) from the retrieved content.

**Anti-patterns — do NOT do these:**
- ❌ "The results are good, but maybe different keywords could find something better."
- ❌ "I have enough to answer, but let me try one more query to be thorough."
- ❌ "The answer is here, but I want to double-check with a different query."
- ❌ Calling retrieval again after you have already identified the answer in previous results.

**If you can answer the question with current results, you MUST answer immediately. Period.**

### Insufficient — the ONLY valid reasons to retry

- Results are completely empty or contain only `Error:` messages.
- ALL results are entirely off-topic with zero relevance to the user's question.
- No usable evidence exists at all — you cannot form even a partial answer.

**"Results are not detailed enough" is NOT a valid reason to retry.**
**"Results might be incomplete" is NOT a valid reason to retry.**

## 7. Fallback and Sequential Retry

On insufficient results, you may retry **up to 2 more times** (3 calls total):

1. Rewrite query, retry same tool.
2. For `rag_retrieve`, escalate `top_k` to `100` on retry.

- Say "no relevant information was found" **only after** exhausting all retries.
- Do NOT switch to local filesystem inspection at any point.
- Do NOT switch to model self-knowledge at any point.
- Do NOT call any retrieval tool more than 3 times in total.

## 8. Handling Missing or Partial Evidence

- If some parts are supported and some are not, answer only the supported parts.
- Clearly mark unsupported parts as unavailable rather than guessing.
- Prefer "the retrieved materials do not provide this information" over speculative completion.
- When user asks for a definitive answer but evidence is incomplete, state the limitation directly.

## 9. Image Handling

- The content returned by the `rag_retrieve` tool may include images.
- Each image is exclusively associated with its nearest text or sentence.
- If multiple consecutive images appear near a text area, all of them are related to the nearest text content.
- Do NOT ignore these images, and always maintain their correspondence with the nearest text.
- Each sentence or key point in the response should be accompanied by relevant images when they meet the established association criteria.
- Avoid placing all images at the end of the response.

## 10. Self-Knowledge Prohibition

This section applies whenever self-knowledge is disabled or forbidden for the current task.

- Retrieval remains the only usable source for factual answering.
- If retrieval is sufficient, answer from retrieval only.
- If retrieval is partially sufficient, answer only the supported parts.
- The model must not supplement missing parts with general knowledge, conceptual explanation, common background, intuition, or likely completion.
- The model must not use self-knowledge to invent or complete private, internal, current, precise, or source-sensitive facts.
- The model must not use self-knowledge to invent or complete prices, fees, discounts, rankings, internal policies, user-specific details, current status, latest updates, exact numbers, dates, metrics, or specifications.
- Unsupported parts must be stated as unavailable rather than guessed.
- If a paragraph would mix retrieved facts and unsupported completion, remove the unsupported completion.
- If evidence is incomplete, state the limitation explicitly.

## 11. Pre-Reply Self-Check

Before replying to a knowledge retrieval task, verify:
- Used only whitelisted retrieval tools — no local filesystem inspection?
- Called retrieval at most 3 times total (not more)?
- Answered immediately when results were sufficient (did NOT call again unnecessarily)?
- Called retrieval exactly once when first results were sufficient (did NOT retry unnecessarily)?
- Did retrieval happen before any factual answer drafting?
- Did every factual claim come from retrieved evidence rather than model knowledge?
- If any unsupported part remained, was it removed or explicitly marked unavailable?

If any answer is "no", correct the process first.