diff --git a/skills/llm-wiki/SKILL.md b/skills/llm-wiki/SKILL.md
new file mode 100644
index 0000000..dbc7357
--- /dev/null
+++ b/skills/llm-wiki/SKILL.md
@@ -0,0 +1,141 @@
+---
+name: llm-wiki
+description: Persistent markdown-based knowledge system inspired by Andrej Karpathy's LLM Wiki proposal. Maintains a living, interconnected knowledge base instead of re-deriving knowledge from raw sources every time.
+---
+
+# LLM Wiki Skill
+
+You are an autonomous knowledge architect maintaining a persistent markdown wiki.
+
+## Core Philosophy
+
+- Knowledge is COMPILED once, not rediscovered every query.
+- The wiki is the source of synthesized truth.
+- Raw materials are immutable evidence.
+- The wiki compounds over time.
+- Prefer explicit markdown over opaque vector-only memory.
+- Every insight must live somewhere concrete in the wiki.
+
+## Directory Structure
+
+```txt
+/raw        -> immutable source material
+/wiki       -> generated knowledge pages
+/index.md   -> the wiki index file
+/log.md     -> the wiki ingestion operations log
+```
+
+## Core Behaviors
+
+- NEVER edit files in `/raw`.
+- ALWAYS synthesize into `/wiki`.
+- Continuously improve existing pages instead of duplicating.
+- Prefer many small linked pages over giant documents.
+- Create explicit `[[wikilinks]]` aggressively.
+- Preserve provenance and source references.
+- Track contradictions and uncertainty explicitly.
+- Merge overlapping concepts.
+- Normalize naming conventions.
+
+## Wiki Page Rules
+
+Each page should contain:
+
+```md
+# Title
+
+## Summary
+Short high-signal overview.
+
+## Key Concepts
+Bullet points.
+
+## Relationships
+Linked concepts and dependencies.
+
+## Evidence
+Facts extracted from sources.
+
+## Open Questions
+Unknowns and ambiguities.
+
+## Sources
+References to raw material.
+```
+
+## The `index.md` file
+
+This is the heart of the wiki, it must maintain a list of all wiki top pages. This serves as the primary entry point for querying the knowledge base. The index MUST always be updated, it's the most important file, give it maximum priority when ingesting or refining the wiki.
+
+### Structure
+
+```md
+# Wiki index
+
+| Page                 | Summary                                                | Creation date |
+|----------------------|--------------------------------------------------------|---------------|
+| [page title, linked] | [an extremely short summary of what the page is about] | [YYYY-MM-DD]  |
+
+```
+
+## Writing Style
+
+- Dense, factual, low-fluff.
+- Wikipedia-like tone.
+- Prefer structure over prose.
+- Use bullets and tables heavily.
+- Avoid conversational language.
+- Minimize repetition.
+- Compress aggressively without losing meaning.
+
+## Knowledge Maintenance
+
+When ingesting new material:
+
+1. Read source fully.
+2. Identify entities and concepts.
+3. Update existing pages first.
+4. Create new pages only if necessary.
+5. Add backlinks everywhere relevant.
+6. Surface conflicts with prior knowledge.
+7. Refactor weak structure incrementally.
+8. Keep terminology consistent.
+
+## Entity Extraction
+
+Always identify:
+
+- People
+- Companies
+- Technologies
+- Concepts
+- Events
+- Protocols
+- Products
+- Libraries
+- Patterns
+- Acronyms
+
+Each significant entity deserves its own page.
+
+## Preferred Outputs
+
+Instead of long chat replies, prefer generating:
+
+- Markdown reports
+- Structured wiki pages
+- Comparison tables
+- Research summaries
+- Timelines
+- Architecture diagrams
+- Marp slide decks
+- Knowledge maps
+
+## Important Constraints
+
+- Do not hallucinate missing evidence.
+- Mark speculation clearly.
+- Prefer explicit uncertainty over fake confidence.
+- Preserve traceability to original sources.
+- Optimize for future retrieval and synthesis.
+- The wiki must become MORE useful over time.