| name | x-ipe-tool-knowledge-extraction-notes |
| description | General-purpose knowledge extractor that organizes content into structured markdown knowledge bases with hierarchy, embedded images, and linked overview. Use when extracting knowledge, creating structured notes, or organizing content into a knowledge base. Triggers on requests like "extract knowledge notes", "create knowledge base", "organize knowledge", "take key insights". |
| categories | ["notes"] |
⚠️ DEPRECATED — This skill is superseded by x-ipe-knowledge-constructor-notes.
Introduced in FEATURE-059-C. This skill will be removed in a future release.
Do not use for new work. Existing references should migrate to the replacement skill.
Knowledge Extraction — Notes
Purpose
AI Agents follow this skill to extract and organize knowledge into structured markdown files:
- Initialize a knowledge folder with standardized structure
- Extract key insights from source content into numbered markdown sections
- Organize hierarchical content with sub-folders and sub-files
- Embed images/screenshots with consistent naming
- Generate an overview.md as a linked table of contents
Important Notes
BLOCKING: All images MUST be stored in the .images/ subfolder — never in the knowledge root or section folders.
CRITICAL: Section files MUST follow the {NN}.{slug}.md numbering convention. Sub-section files use {NNMM}.{slug}.md inside {NN}.{slug}/ folders.
CRITICAL: overview.md MUST be regenerated after any structural change (add/remove/rename sections).
MANDATORY: Every markdown file (sections and overview.md) MUST end with a ## References footer listing all original source URLs, file paths, or data sources used to produce that content. This applies regardless of template_type.
About
A general-purpose knowledge extraction tool that produces self-contained markdown knowledge bases. Unlike specialized extractors (user-manual, reverse-engineering), this skill handles any content type — research notes, meeting insights, tutorial material, reference documentation, or free-form knowledge capture.
Key Concepts:
- Knowledge Folder — Root directory named after the knowledge topic, containing all related files
- Section Numbering — Two-digit prefix (01–99) for ordering; four-digit for sub-sections (0101–0199)
- Overview —
overview.md at root acts as table of contents with links to all sections
- Source Reference Tracking — Every markdown file ends with a
## References footer listing original URLs/data sources
When to Use
triggers:
- "extract knowledge notes"
- "create knowledge base"
- "organize knowledge"
- "knowledge extraction notes"
- "take key insights"
- "create structured notes"
- "extract notes from content"
not_for:
- "User manual extraction → use x-ipe-tool-knowledge-extraction-user-manual"
- "Application reverse engineering → use x-ipe-tool-knowledge-extraction-application-reverse-engineering"
- "README updates → use x-ipe-tool-readme-updator"
Input Parameters
input:
operation: "init_knowledge_folder | get_template | extract_section | embed_image | generate_overview | validate_structure"
knowledge_name: "string"
output_dir: "string"
source_content: "string | null"
section_id: "string | null"
image_path: "string | null"
source_urls: "string[] | null"
template_type: "general | tutorial | reference | research | meeting-notes"
Input Initialization
<input_init>
<field name="operation" source="Caller specifies which operation to perform" />
<field name="knowledge_name">
<steps>
1. IF provided by caller → use directly
2. MUST be lowercase, hyphens only, no spaces (e.g., "react-hooks-guide")
3. IF contains invalid characters → sanitize by replacing spaces/underscores with hyphens, lowercasing
</steps>
</field>
<field name="output_dir">
<steps>
1. IF provided → use as-is
2. IF null → default to current working directory
3. Verify directory exists and is writable
</steps>
</field>
<field name="source_content">
<steps>
1. Required for extract_section operation
2. Can be inline text, a file path, or a URL
3. IF file path → read content from file
4. IF URL → fetch and convert to text
</steps>
</field>
<field name="section_id">
<steps>
1. Required for extract_section, embed_image operations
2. Must match {NN} (two-digit, e.g., "01") or {NNMM} (four-digit, e.g., "0201") format
3. IF invalid format → return error INVALID_SECTION_ID
</steps>
</>
1. Required for embed_image operation
2. Must point to an existing file
3. Must be a supported format: png, jpg, jpeg, gif, svg, webp
4. IF not found or unsupported → return error INVALID_IMAGE
1. Used for embed_image operation to generate target filename
2. Sanitize: lowercase, replace spaces with hyphens, strip special chars
3. IF null → derive slug from original filename
1. Collect all original page URLs, file paths, or data source identifiers used during extraction
2. IF source_content is a URL → automatically include it
3. IF source_content is a file → include the file path
4. IF additional URLs were browsed/referenced during extraction → append them
5. IF null → section References footer will note "Source not recorded"
1. IF provided → load corresponding template from templates/
2. IF null → default to "general"
Definition of Ready
<definition_of_ready>
<checkpoint required="true">
<name>Knowledge Name Valid</name>
<verification>knowledge_name is lowercase, hyphens only, 1-64 chars</verification>
</checkpoint>
<checkpoint required="true">
<name>Output Directory Exists</name>
<verification>output_dir exists and is writable</verification>
</checkpoint>
<checkpoint required="true">
<name>Operation Valid</name>
<verification>operation matches one of the defined operations</verification>
</checkpoint>
</definition_of_ready>
Operations
Operation: Initialize Knowledge Folder
When: Starting a new knowledge base from scratch.
<operation name="init_knowledge_folder">
<action>
1. Create root folder: {output_dir}/{knowledge_name}/
2. Create hidden images folder: {output_dir}/{knowledge_name}/.images/
3. Create initial overview.md with title and empty content table
4. IF template_type provided → load template from templates/ and create placeholder sections
5. Return folder path and created file list
</action>
<constraints>
- BLOCKING: Folder must not already exist (prevents accidental overwrite)
- BLOCKING: .images/ must be created as hidden directory
</constraints>
<output>knowledge_folder_path, created_files[]</output>
</operation>
Operation: Get Template
When: Retrieving the section structure template for a given knowledge type.
<operation name="get_template">
<action>
1. Load template from templates/{template_type}-template.md
2. Return template content with section layout and placeholder descriptions
</action>
<constraints>
- IF template_type not found → fall back to "general" template
</constraints>
<output>template_content, section_list[]</output>
</operation>
Operation: Extract Section
When: Extracting knowledge from source content into a specific section file.
<operation name="extract_section">
<action>
1. Analyze source_content for key insights relevant to section_id
2. Determine if section has sub-topics requiring hierarchy
3. IF flat section:
- Create {NN}.{slug}.md in knowledge root
- Write extracted content as structured markdown
4. IF hierarchical section:
- Create folder {NN}.{slug}/
- Create sub-files {NNMM}.{sub-slug}.md for each sub-topic
5. IF source contains relevant images/diagrams:
- Save to .images/ with naming {NN}.{description-slug}.{ext}
- Insert image references in markdown: 
6. Append `## References` footer at the end of each created markdown file:
- List all source_urls provided for this section
- IF source_content was a URL → auto-include it
- IF source_content was a file path → include it
- Format as numbered markdown list with URL/path and access date
7. Return created file paths and extraction summary
</action>
<constraints>
- BLOCKING: section_id and source_content are required
- BLOCKING: Images MUST go to .images/ folder, never alongside markdown files
- CRITICAL: Markdown content should use relative paths for image references
- MANDATORY: `## References` footer is required on every section file — never omit it
</constraints>
<output>created_files[], extraction_summary</output>
</operation>
Operation: Embed Image
When: Adding a screenshot or diagram to the knowledge base.
<operation name="embed_image">
<action>
1. Validate image_path exists and is a supported format (png, jpg, jpeg, gif, svg, webp)
2. Generate target filename: {section_id}.{image_description}.{ext}
3. Copy image to {knowledge_folder}/.images/{target_filename}
4. Return the markdown image reference string
</action>
<constraints>
- BLOCKING: image_path must exist
- BLOCKING: Target must be inside .images/ folder
</constraints>
<output>image_ref_markdown, target_path</output>
</operation>
Operation: Generate Overview
When: Creating or updating the overview.md table of contents after structural changes.
<operation name="generate_overview">
<action>
1. Scan knowledge folder for all .md files (excluding overview.md)
2. Build ordered list based on numeric prefixes
3. For hierarchical sections, indent sub-files under parent
4. Extract title from each file (first H1 or filename)
5. Generate overview.md with:
- Knowledge base title (from knowledge_name)
- Brief description (if available)
- Linked table of contents with relative paths
- Section count summary
6. Append consolidated `## References` footer to overview.md:
- Scan all section files for their `## References` sections
- Deduplicate and merge all source URLs/paths into a single list
- Format as numbered list, grouped by section origin
7. Write to {knowledge_folder}/overview.md
</action>
<constraints>
- BLOCKING: Must scan recursively for sub-folders
- CRITICAL: Links must use relative paths from overview.md location
</constraints>
<output>overview_path, section_count, toc_structure</output>
</operation>
Operation: Validate Structure
When: Verifying the knowledge folder integrity.
<operation name="validate_structure">
<action>
1. Verify overview.md exists and is not empty
2. Verify .images/ folder exists
3. Verify all section files follow {NN}.{slug}.md naming
4. Verify all sub-section files follow {NNMM}.{slug}.md naming inside {NN}.{slug}/ folders
5. Verify all image references in markdown files point to existing files in .images/
6. Verify all links in overview.md point to existing files
7. Verify every section markdown file and overview.md has a `## References` footer
8. Report any broken links, naming violations, missing references, or missing files
</action>
<constraints>
- CRITICAL: Return detailed report, not just pass/fail
</constraints>
<output>validation_report{valid, issues[], warnings[]}</output>
</operation>
Output Result
operation_output:
success: true | false
operation: "{operation_name}"
result:
knowledge_folder: "{path}"
files_created: []
files_modified: []
errors: []
Definition of Done
<definition_of_done>
<checkpoint required="true">
<name>Operation Completed</name>
<verification>operation_output.success == true</verification>
</checkpoint>
<checkpoint required="true">
<name>Folder Structure Valid</name>
<verification>Knowledge folder contains overview.md and .images/ directory</verification>
</checkpoint>
<checkpoint required="true">
<name>Naming Convention Followed</name>
<verification>All files follow {NN}.{slug}.md pattern; sub-files follow {NNMM}.{slug}.md</verification>
</checkpoint>
<checkpoint required="true">
<name>Images Properly Stored</name>
<verification>All images in .images/ folder; no images outside this folder</verification>
Overview Links Valid
All links in overview.md resolve to existing files
References Footer Present
Every section markdown file and overview.md has a ## References footer listing source URLs/data sources
Error Handling
| Error | Cause | Resolution |
|---|
INVALID_NAME | knowledge_name contains spaces or special chars | Sanitize: lowercase, replace spaces/underscores with hyphens |
FOLDER_EXISTS | Knowledge folder already exists at target path | Use existing folder or choose different name |
MISSING_SOURCE | source_content is null for extract_section | Provide source content to extract from |
INVALID_IMAGE | image_path doesn't exist or unsupported format | Verify path and use png/jpg/gif/svg/webp |
BROKEN_LINK | overview.md references non-existent file | Run generate_overview to regenerate |
INVALID_SECTION_ID | section_id doesn't match {NN} or {NNMM} pattern | Use two-digit (01-99) or four-digit (0101-0199) format |
Anti-Patterns
- Images outside
.images/ — Never place screenshots alongside markdown files. Always store in .images/ and reference via relative path.
- Skipping overview regeneration — After adding/removing/renaming sections, always run
generate_overview. Stale overview.md causes confusion.
- Non-numeric prefixes — Section files must start with
{NN}. (e.g., 01.). Using names without numeric prefix breaks ordering and overview generation.
- Deep nesting — Only one level of hierarchy is supported (
{NN}.{slug}/{NNMM}.{slug}.md). Do not nest sub-folders inside sub-folders.
- Manual overview editing — Do not hand-edit overview.md links. Always regenerate with
generate_overview to ensure consistency.
- Omitting references — Never skip the
## References footer. Even if source is inline text, note "Direct input" as the source.
Templates
| File | Purpose |
|---|
templates/general-template.md | Default knowledge structure template |
templates/overview-template.md | Template for overview.md generation |
Examples
See references/examples.md for usage examples.
