blog-post
langchain-ai/deepagents
Write and structure long-form blog posts with SEO optimization and auto-generated cover images.
What is blog-post?
Writes complete blog posts, tutorials, and long-form content with built-in research delegation, structured formatting, and cover image generation. Use when creating articles, how-to guides, technical writeups, or thought leadership pieces.
- Delegates research to a researcher subagent before writing
- Structures posts with hook, context, main content, practical application, and CTA
- Generates SEO-optimized titles and meta descriptions
- Creates cover images automatically using image generation
- Organizes output in slug-based directory structure with post.md and hero.png
- Provides templates and checklists for quality blog content
How to install blog-post
npx skills add https://github.com/langchain-ai/deepagents --skill blog-post- Access to task tool with researcher subagent capability
- Image generation capability (generate_cover tool)
- File system access to create blogs/ directory structure
How to use blog-post
- 1.Delegate research using task tool with subagent_type='researcher' and save path specified
- 2.Read the generated research findings from research/[slug].md
- 3.Write the blog post following the required structure: hook, context, main content, practical application, conclusion
- 4.Save post to blogs/[slug]/post.md
- 5.Generate a cover image using generate_cover tool with detailed prompt
- 6.Verify both post.md and hero.png exist in the slug directory before considering complete
Use cases
- Writing a technical tutorial on AI agents with research and cover art
- Creating a thought leadership article on industry trends
- Producing a how-to guide with step-by-step instructions and visuals
- Publishing a blog series with consistent structure and branding
- Generating blog content with SEO optimization for search visibility
- Content creators and technical writers
- Product marketers and thought leaders
- Developers writing tutorials and documentation
- Bloggers and journalists
- Marketing teams producing long-form content
blog-post FAQ
Yes, research is required. Use the task tool with subagent_type='researcher' and specify where to save findings. Read the research file before writing your post.
The blog post is incomplete without a cover image. You must use generate_cover to create hero.png in the blogs/[slug]/ directory.
Follow this order: Hook (2-3 sentences), Context (explain the problem), Main Content (3-5 H2 sections), Practical Application (step-by-step), Conclusion & CTA (3 bullet summary plus call-to-action).
Include subject (specific focus), style (art direction), composition (layout), color palette, lighting/atmosphere, and technical details like aspect ratio and negative space for text.
Include main keyword in title (under 60 chars) and first paragraph, use keyword naturally 3-5 times throughout, and write a meta description of 150-160 characters.
Full instructions (SKILL.md)
Source of truth, from langchain-ai/deepagents.
name: blog-post description: Writes and structures long-form blog posts, creates tutorial outlines, and optimizes content for SEO with cover image generation. Use when the user asks to write a blog post, article, how-to guide, tutorial, technical writeup, thought leadership piece, or long-form content.
Blog Post Writing Skill
Research First (Required)
Before writing any blog post, you MUST delegate research:
- Use the
tasktool withsubagent_type: "researcher" - In the description, specify BOTH the topic AND where to save:
task(
subagent_type="researcher",
description="Research [TOPIC]. Save findings to research/[slug].md"
)
Example:
task(
subagent_type="researcher",
description="Research the current state of AI agents in 2025. Save findings to research/ai-agents-2025.md"
)
- After research completes, read the findings file before writing
Output Structure (Required)
Every blog post MUST have both a post AND a cover image:
blogs/
└── <slug>/
├── post.md # The blog post content
└── hero.png # REQUIRED: Generated cover image
Example: A post about "AI Agents in 2025" → blogs/ai-agents-2025/
You MUST complete both steps:
- Write the post to
blogs/<slug>/post.md - Generate a cover image using
generate_imageand save toblogs/<slug>/hero.png
A blog post is NOT complete without its cover image.
Blog Post Structure
Every blog post should follow this structure:
1. Hook (Opening)
- Start with a compelling question, statistic, or statement
- Make the reader want to continue
- Keep it to 2-3 sentences
2. Context (The Problem)
- Explain why this topic matters
- Describe the problem or opportunity
- Connect to the reader's experience
3. Main Content (The Solution)
- Break into 3-5 main sections with H2 headers
- Each section covers one key point
- Include code examples, diagrams, or screenshots where helpful
- Use bullet points for lists
4. Practical Application
- Show how to apply the concepts
- Include step-by-step instructions if applicable
- Provide code snippets or templates
5. Conclusion & CTA
- Summarize key takeaways (3 bullets max)
- End with a clear call-to-action
- Link to related resources
Cover Image Generation
After writing the post, generate a cover image using the generate_cover tool:
generate_cover(prompt="A detailed description of the image...", slug="your-blog-slug")
The tool saves the image to blogs/<slug>/hero.png.
Writing Effective Image Prompts
Structure your prompt with these elements:
- Subject: What is the main focus? Be specific and concrete.
- Style: Art direction (minimalist, isometric, flat design, 3D render, watercolor, etc.)
- Composition: How elements are arranged (centered, rule of thirds, symmetrical)
- Color palette: Specific colors or mood (warm earth tones, cool blues and purples, high contrast)
- Lighting/Atmosphere: Soft diffused light, dramatic shadows, golden hour, neon glow
- Technical details: Aspect ratio considerations, negative space for text overlay
Example Prompts
For a technical blog post:
Isometric 3D illustration of interconnected glowing cubes representing AI agents, each cube has subtle circuit patterns. Cubes connected by luminous data streams. Deep navy background (#0a192f) with electric blue (#64ffda) and soft purple (#c792ea) accents. Clean minimal style, lots of negative space at top for title. Professional tech aesthetic.
For a tutorial/how-to:
Clean flat illustration of hands typing on a keyboard with abstract code symbols floating upward, transforming into lightbulbs and gears. Warm gradient background from soft coral to light peach. Friendly, approachable style. Centered composition with space for text overlay.
For thought leadership:
Abstract visualization of a human silhouette profile merging with geometric neural network patterns. Split composition - organic watercolor texture on left transitioning to clean vector lines on right. Muted sage green and warm terracotta color scheme. Contemplative, forward-thinking mood.
SEO Considerations
- Include the main keyword in the title and first paragraph
- Use the keyword naturally 3-5 times throughout
- Keep the title under 60 characters
- Write a meta description (150-160 characters)
Quality Checklist
Before finishing:
- Post saved to
blogs/<slug>/post.md - Hero image generated at
blogs/<slug>/hero.png - Hook grabs attention in first 2 sentences
- Each section has a clear purpose
- Conclusion summarizes key points
- CTA tells reader what to do next
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