gitlab-wiki

name	gitlab-wiki
description	GitLab wiki operations via API. ALWAYS use this skill when user wants to: (1) list wiki pages, (2) read wiki content, (3) create/update/delete wiki pages, (4) upload wiki attachments.
version	1.0.0
author	GitLab-Assistant-Skills
license	MIT
allowed-tools	["Bash","Read","Glob","Grep"]

Wiki Skill

Wiki page management for GitLab using glab api raw endpoint calls.

Quick Reference

Operation	Command Pattern	Risk
List pages	glab api projects/:id/wikis	-
Get page	glab api projects/:id/wikis/:slug	-
Create page	glab api projects/:id/wikis -X POST -f ...	⚠️
Update page	glab api projects/:id/wikis/:slug -X PUT -f ...	⚠️
Delete page	glab api projects/:id/wikis/:slug -X DELETE	⚠️⚠️
Upload attachment	glab api projects/:id/wikis/attachments -X POST ...	⚠️

Risk Legend: - Safe | ⚠️ Caution | ⚠️⚠️ Warning | ⚠️⚠️⚠️ Danger

When to Use This Skill

ALWAYS use when:

• User mentions "wiki", "wiki page", "documentation page"
• User wants to create/edit project documentation in GitLab
• User mentions wiki slugs or wiki content
• User wants to upload images to wiki

NEVER use when:

• User wants README files (use gitlab-file)
• User wants to search wiki content (use gitlab-search with wiki_blobs scope)
• User wants external documentation (not GitLab wiki)

API Prerequisites

Required Token Scopes: api

Permissions:

• Read wiki: Reporter+ (for private repos)
• Write wiki: Developer+ (or based on project settings)

Note: Wiki must be enabled for the project.

Available Commands

List Wiki Pages

# List all wiki pages
glab api projects/123/wikis --method GET

# With pagination
glab api projects/123/wikis --paginate

# Using project path
glab api "projects/$(echo 'mygroup/myproject' | jq -Rr @uri)/wikis"

Get Wiki Page

# Get page by slug
glab api projects/123/wikis/home --method GET

# Get page with spaces in slug (URL-encode)
glab api "projects/123/wikis/$(echo 'Getting Started' | jq -Rr @uri)" --method GET

# Get nested page
glab api "projects/123/wikis/$(echo 'docs/installation' | jq -Rr @uri)" --method GET

# Get page with specific version
glab api "projects/123/wikis/home?version=abc123" --method GET

# Render HTML
glab api "projects/123/wikis/home?render_html=true" --method GET

Create Wiki Page

# Create simple page
glab api projects/123/wikis --method POST \
  -f title="Getting Started" \
  -f content="# Getting Started\n\nWelcome to the project!"

# Create with Markdown format
glab api projects/123/wikis --method POST \
  -f title="Installation Guide" \
  -f content="# Installation\n\n## Prerequisites\n\n- Node.js 18+\n- npm" \
  -f format="markdown"

# Create with custom slug
glab api projects/123/wikis --method POST \
  -f title="API Reference" \
  -f slug="api-docs" \
  -f content="# API Documentation\n\nEndpoints..."

# Create nested page (using directory in slug)
glab api projects/123/wikis --method POST \
  -f title="Database Setup" \
  -f slug="guides/database-setup" \
  -f content="# Database Setup\n\nConfiguration steps..."

Update Wiki Page

# Update content
glab api "projects/123/wikis/$(echo 'Getting Started' | jq -Rr @uri)" --method PUT \
  -f content="# Getting Started\n\n## Updated content\n\nNew information..."

# Update title and content
glab api projects/123/wikis/home --method PUT \
  -f title="Home Page" \
  -f content="# Welcome\n\nUpdated home page content."

# Change format (markdown, rdoc, asciidoc)
glab api projects/123/wikis/readme --method PUT \
  -f format="asciidoc" \
  -f content="= README\n\nAsciidoc content here."

Delete Wiki Page

# Delete page
glab api projects/123/wikis/old-page --method DELETE

# Delete nested page (URL-encode)
glab api "projects/123/wikis/$(echo 'drafts/temp-page' | jq -Rr @uri)" --method DELETE

Upload Attachment

# Upload image
glab api projects/123/wikis/attachments --method POST \
  -F "file=@screenshot.png"

# The response contains the markdown link to use
# {"file_name":"screenshot.png","file_path":"uploads/...","branch":"master","link":{"url":"...","markdown":"![screenshot](uploads/...)"}}

Wiki Page Options

Option	Type	Description
title	string	Page title (required for create)
slug	string	Page URL slug (auto-generated from title if not provided)
content	string	Page content
format	string	Content format: markdown (default), rdoc, asciidoc

Format Support

Format	Extension	Description
markdown	.md	GitHub-flavored Markdown
rdoc	.rdoc	Ruby documentation format
asciidoc	.asciidoc	AsciiDoc format
org	.org	Org mode format

Common Workflows

Workflow 1: Create Documentation Structure

project_id=123

# Create home page
glab api projects/$project_id/wikis --method POST \
  -f title="Home" \
  -f content="# Project Wiki\n\n- [Getting Started](Getting-Started)\n- [API Reference](API-Reference)\n- [FAQ](FAQ)"

# Create getting started guide
glab api projects/$project_id/wikis --method POST \
  -f title="Getting Started" \
  -f content="# Getting Started\n\n## Installation\n\n\`\`\`bash\nnpm install\n\`\`\`"

# Create API reference
glab api projects/$project_id/wikis --method POST \
  -f title="API Reference" \
  -f content="# API Reference\n\n## Endpoints\n\n| Method | Path | Description |\n|--------|------|-------------|\n| GET | /users | List users |"

Workflow 2: Backup Wiki Content

# List all pages and save content
mkdir -p wiki_backup
glab api projects/123/wikis --paginate | jq -r '.[].slug' | while read slug; do
  echo "Backing up: $slug"
  glab api "projects/123/wikis/$(echo "$slug" | jq -Rr @uri)" | \
    jq -r '.content' > "wiki_backup/${slug//\//_}.md"
done

Workflow 3: Migrate Wiki Content

# Get page from source project
content=$(glab api projects/123/wikis/home | jq -r '.content')
title=$(glab api projects/123/wikis/home | jq -r '.title')

# Create in target project
glab api projects/456/wikis --method POST \
  -f title="$title" \
  -f content="$content"

Workflow 4: Add Image to Wiki Page

# 1. Upload image
response=$(glab api projects/123/wikis/attachments --method POST -F "file=@diagram.png")

# 2. Get markdown link
markdown_link=$(echo "$response" | jq -r '.link.markdown')

# 3. Update page to include image
current_content=$(glab api projects/123/wikis/architecture | jq -r '.content')
new_content="$current_content

## Diagram

$markdown_link"

glab api projects/123/wikis/architecture --method PUT \
  -f content="$new_content"

Workflow 5: List All Wiki Pages with Titles

glab api projects/123/wikis --paginate | \
  jq -r '.[] | "[\(.title)](\(.slug))"'

Wiki Slugs

Slugs are URL-safe versions of titles:

• Spaces become hyphens: Getting Started → Getting-Started
• Special characters are removed
• Case is preserved

For nested pages, use directory structure in slug:

• guides/installation creates a page under guides/

Troubleshooting

Issue	Cause	Solution
404 Not Found	Wiki disabled or page doesn't exist	Enable wiki in project settings, check slug
403 Forbidden	No write access	Need Developer+ role or check wiki permissions
Empty content	Encoding issue	Check content string escaping
Slug mismatch	Auto-generated slug differs	Explicitly set slug parameter
Upload fails	Wrong content type	Use -F flag for file uploads

Best Practices

1. Use meaningful slugs: Keep URLs readable and consistent
2. Create a home page: Start with a home/index page
3. Use relative links: Link between wiki pages using slugs
4. Organize with structure: Use slug directories for organization
5. Include images: Upload screenshots and diagrams for clarity

Related Documentation

• API Helpers
• Safeguards
• Quick Reference
• GitLab Wiki API