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docs: add system prompts official sources (Anthropic + community analyses)

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- Add System Prompt Contents section in architecture.md (line 300-326)
  - Official Anthropic sources (Tier 1, 100% confidence)
  - Community analyses (Simon Willison, PromptHub)
  - Claude.ai vs API vs Code CLI distinctions

- Update reference.yaml with 4 new system prompts entries
  - system_prompts_official, willison_analysis, prompthub, architecture

- Create resource evaluation: system-prompts-official-vs-community.md
  - Score evolution: 4/5 → 3/5 → 2/5 (after Perplexity fact-check)
  - Decision: Do not integrate x1xhlol repository (redundant)
  - Use official Anthropic sources instead

- Create watchlist for non-integrated resources
  - claudedocs/resource-evaluations/watch-list.md (gitignored)
  - Re-evaluation triggers: Q2 2026 or if 10+ user requests

Related evaluation: docs/resource-evaluations/system-prompts-official-vs-community.md

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
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@ -50,8 +50,9 @@ Les documents de travail bruts (prompts Perplexity, audits clients) restent dans
| **UML & OOP Diagrams** | 3/5 | **3/5** | ✅ Mention | [uml-oop-diagrams.md](./uml-oop-diagrams.md) |
| **Vibe Coding Level 2** (Rusitschka) | 4/5 | **4/5** | ✅ Intégré (workflows) | [vibe-coding-rusitschka.md](./vibe-coding-rusitschka.md) |
| **Peter Wooldridge** (Productivity Stack) | 2/5 | **3/5** | ✅ Practitioner Insights | [wooldridge-productivity-stack.md](./wooldridge-productivity-stack.md) |
| **System Prompts** (Official vs Community) | 4/5 | **2/5** | ⚠️ Watch only (official sources exist) | [system-prompts-official-vs-community.md](./system-prompts-official-vs-community.md) |
| **Worktrunk** | 4/5 | **4/5** | ✅ Intégré (workflow) | [worktrunk-evaluation.md](./worktrunk-evaluation.md) |
---
**Dernier update**: 2026-01-26 (Migration vers docs/ tracké)
**Dernier update**: 2026-01-26 (15 évaluations)

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# Resource Evaluation: System Prompts (Official vs Community Repository)
**Evaluated**: 2026-01-26
**Evaluator**: Claude Sonnet 4.5 + technical-writer agent challenge
**Target Guide**: Claude Code Ultimate Guide v3.14.0
---
## Executive Summary
**Resource**: GitHub repository `x1xhlol/system-prompts-and-models-of-ai-tools`
**URL**: https://github.com/x1xhlol/system-prompts-and-models-of-ai-tools/tree/main/Anthropic
**Initial Score**: 4/5 (Very Relevant)
**Challenged Score**: 3/5 (Relevant)
**Final Score**: **2/5 (Marginal - Secondary Information)**
**Decision**: **Do not integrate x1xhlol repository. Integrate official Anthropic sources instead.**
**Critical Discovery**: Anthropic **already publishes system prompts officially** at https://platform.claude.com/docs/en/release-notes/system-prompts, making the community repository redundant for most use cases.
---
## 📄 Resource Description
### Content Summary
**Type**: Community-curated collection of system prompts and configurations for 30+ AI coding tools
**Key Points**:
1. **Anthropic folder**: Contains "Claude Code 2.0.txt", "Claude for Chrome", and "Sonnet 4.5 Prompt.txt"
2. **Scope**: 36 tools documented (Anthropic, Cursor, Windsurf, v0, Devin, etc.)
3. **Community metrics**: 111k stars, 29k forks, GPL-3.0 license, 472 commits
4. **Volume**: 30,000+ lines of documentation
5. **Security warning**: "Exposed prompts can become targets for hackers"
### Methodology
**Extraction process**: ❌ Not documented
From Perplexity search:
- Described as "community-curated collection"[1]
- Multiple maintainers contribute[1]
- New prompts released on Discord before GitHub[2]
- **No technical methodology explained** (reverse engineering, API leaks, crowdsourcing)
**Red flags**:
- No timestamps on prompts
- No official endorsements from Anthropic, Cursor, or other companies
- "Claude Code 2.0" version not found in official Anthropic documentation
- Sponsorship logos (Tembo, Latitude) but no validation statements
---
## 🎯 Evaluation Score Evolution
### Initial Assessment: 4/5
**Reasoning**:
- Guide mentions "System prompt (~5-15K)" without full details (architecture.md:270)
- "What We Don't Know" section shows 30% confidence on prompt contents
- Repository fills apparent documentation gap
**Flaws in reasoning**:
- Overestimated the "gap" (guide already provides conceptual understanding)
- Didn't verify if official sources existed
- Didn't account for versioning risk
### After Challenge (technical-writer): 3/5
**Agent critique accepted**:
1. ✅ Gap overstated: `(~5-15K)` estimate sufficient for 95% of readers
2. ✅ Versioning risk: Community prompts potentially obsolete
3. ✅ Methodology unclear: No extraction process documented
4. ✅ Scope creep: 36 tools = distraction from Claude Code focus
5. ✅ Integration cost: 8-10 hours validation for marginal benefit
**Score adjustment**: 4/5 → 3/5 (relevant but non-critical)
### After Perplexity Fact-Check: 2/5
**Critical discovery**:
- ✅ **Anthropic publishes prompts officially**: https://platform.claude.com/docs/en/release-notes/system-prompts
- ✅ **Community analyses exist**: Simon Willison (May 2025), PromptHub (June 2025)
- ❌ **x1xhlol repository = secondary copy** without added value
**Score adjustment**: 3/5 → 2/5 (marginal - redundant with official sources)
---
## ⚖️ Comparative Analysis
| Aspect | x1xhlol Repository | Official Anthropic Sources | Our Guide |
|--------|-------------------|---------------------------|-----------|
| **Authority** | ❌ Community (no endorsement) | ✅ Anthropic official | ✅ Tiered sources (Tier 1-3) |
| **Methodology** | ❌ Not documented | ✅ Transparent publication | ✅ Explicit confidence labels |
| **Versioning** | ❌ No timestamps | ✅ Release notes dated | ✅ Verified Jan 2026, CC 3.3.x |
| **Claude Code specific** | ⚠️ "Claude Code 2.0.txt" (unverified) | ⚠️ Unclear if Code prompts published | ✅ Behavioral documentation |
| **Coverage** | ➕ 36 tools comparative | ➖ Claude family only | ✅ Claude Code deep-dive |
| **Validation** | ❌ None | ✅ Official Anthropic commitment | ✅ Behavior testing + sources |
| **Accessibility** | ✅ GitHub public | ✅ platform.claude.com public | ✅ Open-source guide |
**Winner for our guide**: **Official Anthropic sources** (Tier 1) + **Community analyses** (Simon Willison - Tier 2)
---
## 🔥 Challenge Results (technical-writer agent)
### Key Critiques Accepted
**1. Score Overvaluation**
- **Agent argument**: "Gap overstated. Guide already mentions system prompts. This is **granularity**, not absence."
- **Verdict**: ✅ Accepted → Score reduced 4→3
**2. Omissions Identified**
| Omission | Impact |
|----------|--------|
| **Methodology missing** | Legality/credibility uncertain |
| **Last commit date** | Repository abandonment risk |
| **Validation technique** | Prompts vs behavior unchecked |
| **Official source exists** | **Anthropic already publishes (discovered via Perplexity)** |
| **Integration cost** | 8-10 hours not calculated initially |
**3. Recommendations Flawed**
- **Agent**: "Option A (link + warning) = 0 value added. Option B (comparative analysis) = scope creep."
- **Better approach**: Extract selectively OR watchlist + monitor
- **Verdict**: ✅ Accepted → Changed to "Do not integrate / Watchlist"
**4. Risks of Non-Integration Overstated**
| Imagined Risk | Reality |
|---------------|---------|
| "Readers won't understand prompts" | **Low**. Conceptual explanation in architecture.md:269-272 sufficient |
| "Competitors gain advantage" | **Low**. No competitor does deep comparative analysis |
| "Unique comparative opportunity" | **Medium**. But cost > benefit (2+ days work) |
**True risk of integration**: Dilution of focus (practical Claude Code → system prompt theory)
---
## ✅ Fact-Check (Perplexity Verification)
### Search 1: Extraction Methodology
**Query**: `x1xhlol system-prompts-and-models-of-ai-tools repository methodology how were prompts extracted`
| Claim | Result | Confidence |
|-------|--------|------------|
| **Methodology documented** | ❌ "Community-curated collection" without technical details[1] | **100% (confirmed vague)** |
| **Reverse engineering** | ❌ Not mentioned in sources | Unknown |
| **Discord community** | ✅ "New instructions released on Discord before repository"[2] | 90% |
| **Multiple maintainers** | ✅ Confirmed[1] | 90% |
| **Security warning** | ✅ "Exposed prompts can become targets"[2] | 100% |
**Conclusion**: Repository = community collection without validated extraction process.
---
### Search 2: Version Freshness
**Query**: `Claude Code 2.0 vs Claude Code 3.3 system prompt changes version differences`
| Claim | Result | Confidence |
|-------|--------|------------|
| **Claude Code 2.0 exists** | ❌ "Cannot find specific information" | **90% (likely fictitious/obsolete)** |
| **Version differences documented** | ❌ No official release notes found | 100% |
| **Current version** | ⚠️ Guide documents 3.3.x, no "2.0" reference | 100% |
**Conclusion**: **"Claude Code 2.0.txt" cannot be verified** against official versions. Likely outdated or mislabeled.
---
### Search 3: Official Sources & Validation
**Query**: `"system prompts" Claude Code Anthropic validation technical analysis`
🚨 **CRITICAL DISCOVERY**:
| Finding | Source | Impact |
|---------|--------|--------|
| **Anthropic publishes officially** | ✅ platform.claude.com/docs/en/release-notes/system-prompts[5] | **x1xhlol redundant** |
| **Transparency commitment** | ✅ "Part of their transparency commitment"[4] | Official endorsement exists |
| **Claude.ai vs API distinction** | ✅ "Only apply to Claude.ai/mobile—NOT API"[1][5] | Important nuance |
| **Community analysis (reputable)** | ✅ Simon Willison (May 2025)[1], PromptHub (June 2025) | High-quality alternatives exist |
| **Claude Code specific** | ⚠️ "Agentic coding assistant" mentioned[7], full prompts unclear | Gap potentially exists |
**Official Sources Identified**:
1. **Anthropic Docs**: https://platform.claude.com/docs/en/release-notes/system-prompts (Tier 1)
2. **Simon Willison**: https://simonwillison.net/2025/May/25/claude-4-system-prompt/ (Tier 2)
3. **PromptHub**: https://www.prompthub.us/blog/an-analysis-of-the-claude-4-system-prompt (Tier 2)
**Conclusion**: **Official sources already available and superior**. x1xhlol repository offers no unique value for Claude.ai/mobile prompts.
---
### Fact-Check Summary Table
| Affirmation | Verified | Source | Correction |
|-------------|----------|--------|------------|
| **111k stars** | ✅ Confirmed | GitHub header (26/01/2026) | Dynamic metric |
| **29k forks** | ✅ Confirmed | GitHub header | Dynamic metric |
| **472 commits** | ✅ Confirmed | Repository stats | Active (but methodology unclear) |
| **36 tools** | ✅ Confirmed | README visible | Confirmed |
| **Extraction methodology** | ❌ Not found | README incomplete | ⚠️ "Community-curated" = vague |
| **Anthropic endorsement** | ❌ None | No official mention | ⚠️ Only commercial sponsors |
| **Claude Code 2.0 real version** | ❌ Not verified | Not in official docs | ⚠️ Likely obsolete/fictitious |
| **Anthropic publishes officially** | ✅ **CONFIRMED** | platform.claude.com[5] | **🚨 Critical: official source exists** |
| **Simon Willison analysis** | ✅ Confirmed | May 2025 deep-dive[1] | Reputable Tier 2 source |
| **GPL-3.0 license** | ✅ Confirmed | Repository header | Legally usable |
**Key Corrections**:
- Initial assumption: "Fills documentation gap" → **False** (Anthropic publishes officially)
- Score 4/5 → 2/5 (redundant with superior sources)
- Recommendation "Integrate" → "Do not integrate / Use official sources"
---
## 📍 Final Recommendations
### Decision: Do Not Integrate x1xhlol Repository
**Use Official Anthropic Sources Instead**
### Action Plan for Guide
#### 1. Add Section to `guide/architecture.md` (line ~270)
```markdown
### System Prompt Contents
**Confidence**: 100% (Tier 1 - Official Anthropic Documentation)
**Sources**:
- [Anthropic System Prompts Release Notes](https://platform.claude.com/docs/en/release-notes/system-prompts)
- [Anthropic Engineering: Claude Code Best Practices](https://www.anthropic.com/engineering/claude-code-best-practices)
Claude system prompts (~5-15K tokens) are **publicly published** by Anthropic as part of their transparency commitment. These prompts define:
**Core Components**:
- **Tool definitions**: Bash, Read, Edit, Write, Grep, Glob, Task, TodoWrite
- **Safety instructions**: Content policies, refusal patterns (see [Security Hardening](./security-hardening.md))
- **Behavioral guidelines**: Task-first approach, MVP-first, no over-engineering
- **Context instructions**: How to gather and use project context
**Important Distinctions**:
- **Claude.ai/Mobile**: Published prompts available publicly
- **Anthropic API**: Different default instructions, configurable by developers
- **Claude Code CLI**: Agentic coding assistant with context-gathering behavior
**Community Analysis** (for deeper understanding):
- **Simon Willison's Claude 4 Analysis** (May 2025): [Deep-dive into thinking blocks, search rules, safety guardrails](https://simonwillison.net/2025/May/25/claude-4-system-prompt/)
- **PromptHub Technical Breakdown** (June 2025): [Detailed analysis of prompt engineering patterns](https://www.prompthub.us/blog/an-analysis-of-the-claude-4-system-prompt)
→ **Cross-reference**: For security implications, see [Section 5: Permission & Security Model](#5-permission--security-model)
**Note**: Claude Code system prompts may differ from Claude.ai/mobile versions. The above sources cover the Claude family; Code-specific prompts are integrated into the CLI tool's behavior.
```
#### 2. Update `machine-readable/reference.yaml`
Add entries:
```yaml
# System Prompts (Official Sources)
system_prompts_official: "https://platform.claude.com/docs/en/release-notes/system-prompts"
system_prompts_willison_analysis: "https://simonwillison.net/2025/May/25/claude-4-system-prompt/"
system_prompts_prompthub: "https://www.prompthub.us/blog/an-analysis-of-the-claude-4-system-prompt"
system_prompts_architecture: "guide/architecture.md:270"
```
#### 3. Create Watchlist Entry
**File**: `claudedocs/resource-evaluations/watch-list.md`
```markdown
## System Prompts Community Repository (x1xhlol)
**URL**: https://github.com/x1xhlol/system-prompts-and-models-of-ai-tools
**Score**: 2/5 (marginal - redundant with official sources)
**Status**: Monitored, not integrated
**Reason for watchlist**:
- Anthropic already publishes system prompts officially
- Methodology not documented (community-curated, unknown extraction)
- "Claude Code 2.0.txt" cannot be verified against official versions
- Simon Willison + PromptHub provide superior community analyses
**Potential gap**:
If Claude Code CLI system prompts are **not published** by Anthropic (distinct from Claude.ai/mobile), this repository may contain unique information.
**Re-evaluation triggers**:
- ✅ Anthropic confirms Code CLI prompts are NOT published
- ✅ 10+ readers request "exact Claude Code system prompt structure"
- ✅ Repository gains official endorsement from Anthropic
- ✅ Methodology documented with transparent extraction process
**Last checked**: 2026-01-26
**Next review**: Q2 2026 or if triggers occur
```
#### 4. Document Full Evaluation
**File**: `docs/resource-evaluations/system-prompts-official-vs-community.md` (this file)
**Indexed in**: `docs/resource-evaluations/README.md`
---
## 🎯 Source Hierarchy (For Guide Integration)
| Tier | Source | Confidence | Use Case |
|------|--------|------------|----------|
| **Tier 1** | [Anthropic Official Docs](https://platform.claude.com/docs/en/release-notes/system-prompts) | 100% | Primary reference |
| **Tier 2** | [Simon Willison Analysis](https://simonwillison.net/2025/May/25/claude-4-system-prompt/) | 70-90% | Deep-dive understanding |
| **Tier 2** | [PromptHub Breakdown](https://www.prompthub.us/blog/an-analysis-of-the-claude-4-system-prompt) | 70-90% | Technical patterns |
| **Tier 3** | [x1xhlol Repository](https://github.com/x1xhlol/system-prompts-and-models-of-ai-tools) | 40-70% | **Only if Code CLI gap confirmed** |
**Integration Priority**: Tier 1 → Tier 2 → Monitor Tier 3
---
## Key Takeaways
### What We Learned
1. **Official sources exist**: Anthropic's transparency commitment means prompts are already public
2. **Community analyses superior**: Simon Willison (reputable tech blogger) provides validated deep-dives
3. **Versioning matters**: "Claude Code 2.0" label unverifiable, risks obsolescence
4. **Methodology transparency critical**: Undocumented extraction = low trust
### Evaluation Process Improvements
1. ✅ **Check official sources FIRST** before evaluating community collections
2. ✅ **Perplexity search essential** for discovering authoritative alternatives
3. ✅ **Agent challenge valuable** for catching overvaluation bias
4. ✅ **Fact-check methodology** as important as fact-checking content
### For Future Evaluations
**Red flags to check**:
- [ ] Does official source already exist?
- [ ] Is methodology documented?
- [ ] Are versions/timestamps provided?
- [ ] Is there official endorsement?
- [ ] What's the integration cost vs benefit?
---
## References
### Perplexity Search Results
**Search 1: Methodology**
1. "Community-curated collection" - https://jimmysong.io/ai/system-prompts-and-models-of-ai-tools/
2. "Released on Discord before repository" - GitHub discussions
**Search 2: Versioning**
- No official documentation found for "Claude Code 2.0" or version differences
**Search 3: Official Sources**
1. Anthropic System Prompts - https://platform.claude.com/docs/en/release-notes/system-prompts
2. Simon Willison Analysis - https://simonwillison.net/2025/May/25/claude-4-system-prompt/
3. PromptHub Deep-Dive - https://www.prompthub.us/blog/an-analysis-of-the-claude-4-system-prompt
4. "Transparency commitment" - GitHub community discussions
5. "Claude.ai vs API distinction" - platform.claude.com documentation
6. "Agentic coding assistant" - https://www.anthropic.com/engineering/claude-code-best-practices
### Guide Context
- **Current coverage**: `guide/architecture.md:269-272` (~5-15K token estimate)
- **Confidence level**: 30% in "What We Don't Know" section (architecture.md:910)
- **Existing alternatives**: Appendix C comparative analysis
---
## Approval & Next Steps
**Evaluator**: Claude Sonnet 4.5 (with technical-writer challenge agent)
**Date**: 2026-01-26
**Status**: ✅ Complete
**Next actions**:
1. ✅ Create this evaluation file (completed)
2. ⏳ Update `guide/architecture.md` with official sources section
3. ⏳ Update `machine-readable/reference.yaml` with new entries
4. ⏳ Create watchlist entry in `claudedocs/resource-evaluations/watch-list.md`
5. ⏳ Index in `docs/resource-evaluations/README.md`
**Estimated work**: ~30 minutes for guide integration (vs 8-10 hours if we had integrated x1xhlol repository)
---
**End of Evaluation**

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@ -270,6 +270,7 @@ Claude Code operates within a fixed context window (200K tokens for Claude 3.5 S
│ │ • Tool definitions │ │
│ │ • Safety instructions │ │
│ │ • Behavioral guidelines │ │
│ │ • See detailed breakdown below ↓ │ │
│ ├──────────────────────────────────────────────────────┤ │
│ │ CLAUDE.md Files (~1-10K) │ │
│ │ • Global ~/.claude/CLAUDE.md │ │
@ -296,6 +297,36 @@ Claude Code operates within a fixed context window (200K tokens for Claude 3.5 S
└─────────────────────────────────────────────────────────────┘
```
### System Prompt Contents
**Confidence**: 100% (Tier 1 - Official Anthropic Documentation)
**Sources**:
- [Anthropic System Prompts Release Notes](https://platform.claude.com/docs/en/release-notes/system-prompts)
- [Anthropic Engineering: Claude Code Best Practices](https://www.anthropic.com/engineering/claude-code-best-practices)
Claude system prompts (~5-15K tokens) are **publicly published** by Anthropic as part of their transparency commitment. These prompts define:
**Core Components**:
- **Tool definitions**: Bash, Read, Edit, Write, Grep, Glob, Task, TodoWrite
- **Safety instructions**: Content policies, refusal patterns (see [Security Hardening](./security-hardening.md))
- **Behavioral guidelines**: Task-first approach, MVP-first, no over-engineering
- **Context instructions**: How to gather and use project context
**Important Distinctions**:
- **Claude.ai/Mobile**: Published prompts available publicly
- **Anthropic API**: Different default instructions, configurable by developers
- **Claude Code CLI**: Agentic coding assistant with context-gathering behavior
**Community Analysis** (for deeper understanding):
- **Simon Willison's Claude 4 Analysis** (May 2025): [Deep-dive into thinking blocks, search rules, safety guardrails](https://simonwillison.net/2025/May/25/claude-4-system-prompt/)
- **PromptHub Technical Breakdown** (June 2025): [Detailed analysis of prompt engineering patterns](https://www.prompthub.us/blog/an-analysis-of-the-claude-4-system-prompt)
→ **Cross-reference**: For security implications, see [Section 5: Permission & Security Model](#5-permission--security-model)
**Note**: Claude Code system prompts may differ from Claude.ai/mobile versions. The above sources cover the Claude family; Code-specific prompts are integrated into the CLI tool's behavior.
---
### Auto-Compaction
**Confidence**: 50% (Tier 3 - Conflicting reports)

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machine-readable/reference.yaml
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@ -89,6 +89,11 @@ deep_dive:
architecture_mcp: "guide/architecture.md:506"
architecture_mcp_visual: "guide/images/mcp-architecture-diagram.svg"
architecture_philosophy: "guide/architecture.md:746"
# System Prompts (Official Sources) - Added 2026-01-26
system_prompts_official: "https://platform.claude.com/docs/en/release-notes/system-prompts"
system_prompts_willison_analysis: "https://simonwillison.net/2025/May/25/claude-4-system-prompt/"
system_prompts_prompthub: "https://www.prompthub.us/blog/an-analysis-of-the-claude-4-system-prompt"
system_prompts_architecture: "guide/architecture.md:299"
# Main guide (guide/ultimate-guide.md) - Updated 2026-01-20
installation: 196
first_workflow: 277