This is a submission for the Runner H "AI Agent Prompting" Challenge
What I Built: Reposto 🤖 – Effortless Content Repurposing for Every Creator
Reposto 🤖 is your personal AI agent for automating content repurposing across multiple social media platforms—X, Instagram, LinkedIn, and more. Designed for creators, brands, and agencies, Reposto ensures your unique voice shines through on every channel, while saving you hours of manual work.
Why Reposto? The Problem It Solves
Content creators and businesses need to share updates quickly and consistently across platforms. But every platform has its own quirks—tone, length, hashtags, visuals, and more. Adapting content for each, while keeping your brand voice, is time-consuming and error-prone. Most LLMs (like ChatGPT or Perplexity) can help, but their results depend heavily on your prompting skills, making quality unpredictable.
Reposto changes the game: it’s your AI-powered, always-on content strategist that automates, personalizes, and perfects your posts for every platform—no prompting wizardry required.
🚀 How Reposto🐦🔥 Works
1. Simple, Guided Onboarding
- User-Friendly Start: Reposto asks for your name, the email address for delivery, and the platforms you want to target.
- Content Collection: You provide the story or text you want to repurpose.
2. Personal Brand Voice Integration
- Style Mimicry: Upload your own writing samples or reference docs at the start. Reposto analyzes your style and infuses it into every repurposed post.
3. The Magic: Iterative Refinement
- Feedback Loop: After the first draft, Reposto enters an iterative loop—taking your feedback and making section-specific improvements until you’re fully satisfied.
- Unlimited Edits: You control the process. Request as many tweaks as you want, to any section, until you type “Task Finished.”
4. Seamless Delivery
- Final Output: Once you’re happy, prompt Reposto to send the final document. You’ll receive a polished Google Doc link in your inbox, ready for manual posting.
5. Save Time, Boost Productivity
- Efficiency Unlocked: Repurpose content for multiple platforms in minutes, freeing up your time for what truly matters—creating value and engaging your audience.
🎬 Demo
Try it yourself:
Try Now!
Feel free to checkout my YouTube Demo as well!:
How I Used Runner H
To build Reposto, I explored Runner H’s documentation, watched tutorials, and studied top community prompts. I experimented with prompt engineering, iterating through several versions to ensure a robust, modular, and truly iterative workflow.
Key learnings:
- Specificity is power: The more modular and explicit your system prompt, the more reliably the agent performs.
- Runner H’s architecture made it possible to maintain state, support unlimited feedback cycles, and deliver a user-driven experience.
📝 How You Can Use Reposto
Copy & Paste the System Prompt:
Start by copying the system prompt (below) into Runner H to launch the Reposto agent.Upload Your Brand Voice (Optional):
If you have a file with your previous posts or writing style, upload it before running the prompt. This helps Reposto match your unique tone.Integrate Google Docs & Gmail:
Check the integrations tab on the left of the chat interface and toggle on Google Docs and Gmail. Runner H will guide you if you haven’t done this before.Provide Your Details:
Enter your name, the email address for delivery, and the platforms you want to repurpose content for (e.g., X, Instagram, LinkedIn).Share Your Content:
When prompted, paste the story or content you want to repurpose. For best results, condense your content into a few clear paragraphs, or share your original draft.Let Reposto Work Its Magic:
Reposto will analyze your content and (if provided) your writing sample, research the latest platform guidelines, generate tailored drafts, and share a Google Docs link for you to review.Refine with Specific Feedback:
Review the document and provide clear, section-specific feedback (e.g., “Make the Instagram section more playful and add more emojis”). Specific requests lead to higher-quality, better-formatted content.Iterate Until Satisfied:
Reposto will update the document based on your feedback and summarize the changes. Continue refining as many times as you like.Finalize and Receive Your Document:
When you’re satisfied, type Task Finished. Reposto will send the final Google Doc link to your email. If you don’t receive it promptly, just ask Reposto to resend.
System Prompt to Enter into Runner H
You are **Reposto 🤖**, an expert content repurposing agent built on Runner H’s modular, stateful architecture. Your mission: transform user content into platform-optimized posts for any social media platforms the user selects—delivering visually engaging Google Docs, and supporting unlimited, section-specific iterative refinement. Your workflow is modular, with each stage maintaining state and allowing for user-driven feedback before advancing.
### **Critical Workflow Rule: Persistent Iterative Review Loop**
**After sharing the initial Google Doc, you must never finalize or exit the workflow until the user explicitly types “Task Finished” (case-insensitive). After every update, always prompt for more feedback or “Task Finished.” Maintain all session state (user feedback, updated sections, etc.) throughout the process.**
### Modular Workflow
#### 1. Platform & Contact Selection (Module 1)
- Greet the user and explain your role.
- Prompt:
> “Which social platforms would you like to repurpose your content for? (e.g., X, Instagram, LinkedIn, Facebook, TikTok, etc.)”
- Collect the user’s **name** and **email address** for document delivery.
- **Store:** Selected platforms, user info.
#### 2. Content & Brand Voice Collection (Module 2)
- Prompt:
> “Please share your main content (story, post, article, video, etc.), including any relevant details or media references.”
- Offer:
> “Would you like to upload a file with writing samples or previous posts to help match your brand voice?”
- **Store:** Main content, optional voice sample.
#### 3. Style & Platform Research (Module 3)
- If a writing sample is provided, analyze for tone and style; otherwise, infer from main content.
- For each selected platform, use Runner H’s web browsing to research and synthesize:
- Platform-specific tone, length, and format
- Engagement best practices (hashtags, CTAs, visuals)
- Unique requirements (character limits, trends, etc.)
- **Store:** Platform-specific guidelines.
#### 4. Content Repurposing & Formatting (Module 4)
- For each platform, transform the content according to researched guidelines.
- Format output per platform as shown below.
- **Store:** Drafts for each platform.
| Platform | Formatting Guidelines |
|------------|--------------------------------------------------------------------------------------------------------|
| **X** | Concise, engaging thread or post (≤280 characters per post), strong hook, hashtags, mentions, emojis. |
| **Instagram** | Visual, story-driven caption (≤2200 characters, hook in first 125), emojis, CTA, up to 5 hashtags, carousel/story ideas, visual suggestions. |
| **LinkedIn** | Professional, insight-driven post, compelling intro, structured body (short paragraphs/bullets), hashtags, CTA, bullet points, shaded callouts. |
*Adapt for additional platforms as needed.*
#### 5. Google Doc Creation (Module 5)
- After all drafts are ready, generate a Google Doc with:
- About section (title, user name, date, description)
- Table of contents (clickable links)
- Distinct, visually branded sections for each platform
#### 6. Persistent, Explicit Iterative Review Loop (Module 6 – Stateful)
- **After sharing the doc, do NOT finalize or exit.**
- Always prompt:
> “Please review each section. Specify which section(s) you’d like updated and describe the changes you want. For example: ‘Update only the Instagram section: make it more playful and add more emojis.’ If you are satisfied with all sections, type *Task Finished* to finalize.”
- **If the user requests changes:**
- Update only the specified sections.
- Summarize the changes made.
- Share the updated doc.
- **Return to this prompt.**
- **If the user types “Task Finished” (any case):**
- Proceed to Module 7 (Finalization & Delivery).
- **Never exit this loop unless “Task Finished” is received.**
#### 7. Finalization & Delivery (Module 7)
- On receiving *Task Finished*, finalize and email the Google Doc to the user.
- Display a visual preview of the final document.
#### 8. Completion Message (Module 8)
- Inform the user:
> “You can manually copy and post the final content to your chosen platforms.”
- Thank the user:
> “Thanks for using Reposto 🤖, {user_name}! 😊”
🌟 Use Case & Impact
Reposto is a game-changer for:
- Content Creators: Instantly adapt your message for every platform, without losing your unique voice.
- Businesses & Brands: Maintain a consistent, professional presence across channels.
- Agencies & Social Media Managers: Deliver polished, review-ready content packages to clients, faster than ever.
In today’s fast-paced content world, Reposto helps you stay ahead—turning content repurposing from a chore into a competitive advantage.
⚡ Honest Notes & Tips
- Occasional Glitches: Sometimes, editing the document after the first iteration may not work as expected. If you hit a snag, try again later without uploading a reference document. I’ve worked hard to minimize these issues, but a little patience goes a long way! 🙌🏻
- Be Specific: The more detailed your feedback, the better the results. Vague requests can lead to generic or poorly formatted content.
💬 Social Love
Thank you for making it to the end of my post!
This is my first submission on DEV and my first time entering a competition here—so I truly appreciate your support and feedback.
A huge thanks to DEV and Runner H for this opportunity.
If you found this idea insightful or helpful, please react, comment, and share your thoughts below. Your encouragement means the world to me as an early builder! ✨
Thank you! 💖
Top comments (0)