How to Build an AI Agent That Turns Random Thoughts into Organized Notion Pages

I was losing hundreds of ideas because I never organized them. Now I just dump any thought into this AI agent and it instantly creates a perfectly formatted Notion page with tags, summaries, and clean text. Here's the exact 15-minute build.

Raw note → AI processing → Organized Notion page in seconds

The Setup (5 minutes)

You need:

• Notion (free)
• Langflow Desktop (download here)
• OpenAI API key ($5 credit is plenty)

1. Create Your Notion Database

Make a new database with these exact fields:

• Title (Title)
• Content (Text)
• Summary (Text)
• Tags (Multi-select)
• Created At (Date)

2. Get Notion API Access

1. Go to notion.so/my-integrations
2. New Integration → Name it → Copy the token
3. Share your database with the integration

The Build (10 minutes)

Open Langflow Desktop and create this flow:

Component 1: Text Input

Add Text Input → Name it "Random Note"

Component 2: OpenAI Processing

Add Language Model → OpenAI → Add this system prompt:

You are a writing and organizing assistant.
Rewrite the user's raw text concisely, fix grammar, and preserve meaning. 
Create a clear short title. Generate 1–3 topical tags. Create a brief 1–2 sentence summary. 

Return ONLY valid JSON in this schema:
{
  "title": "string",
  "content": "string", 
  "summary": "string",
  "tags": ["string", ...]
}

Rules:
- Tags: short lowercase phrases, no # or punctuation.
- Never add explanations or extra text outside JSON.

Component 3: JSON to Notion Formatter

Add Simple Notion Props (Custom Component) → Connect to Language Model This converts the AI's JSON into Notion's property format

Custom Component Code (simple_notion_props.py):

python
import json, re
from langflow.custom.custom_component.component import Component
from langflow.io import MessageTextInput, Output
from langflow.schema import Message
from datetime import datetime

class SimpleNotionProps(Component):
    display_name = "Simple Notion Props"
    description = "LLM JSON -> Notion Properties (JSON) as a Message."
    icon = "braces"
    name = "SimpleNotionProps"

    inputs = [
        MessageTextInput(
            name="raw_json",
            display_name="LLM JSON",
            info='LLM output JSON: {"title":"...", "content":"...", "summary":"...", "tags":["..."]}',
            tool_mode=True,
        ),
    ]

    outputs = [
        Output(display_name="Properties (JSON)", name="properties_json", method="build"),
    ]

    def _parse(self, raw: str):
        s = (raw or "").strip()
        # strip ```json fences if present
        s = re.sub(r"^```(?:json)?\s*|\s*```$", "", s, flags=re.I)
        return json.loads(s)

    def build(self) -> Message:
        obj = self._parse(self.raw_json)
        created_at = datetime.utcnow().isoformat()

        props = {
            "Title":   {"title":     [{"text": {"content": (obj.get("title") or "")[:100]}}]},
            "Content": {"rich_text": [{"text": {"content": (obj.get("content") or "")[:2000]}}]},
            "Summary": {"rich_text": [{"text": {"content": (obj.get("summary") or "")[:2000]}}]},
            "Tags":    {"multi_select": [{"name": str(t)[:40]} for t in (obj.get("tags") or [])]},
            "Created At": {"date": {"start": created_at}},
        }

        return Message(text=json.dumps(props))

Component 4: Create Notion Page

Add Create Page (Notion category) → Enter:

• Your Database ID (from Notion URL)
• Your Integration Token
• Connect to Simple Notion Props output

Component 5: Extract & Display URL

Add URL Extractor (Custom Component) → Chat Output Extracts the Notion page URL from the API response

Custom Component Code (url_extractor.py):

python
import json
from langflow.custom.custom_component.component import Component
from langflow.io import DataInput, Output
from langflow.schema import Message, Data

class URLExtractor(Component):
    display_name = "URL Extractor"
    description = "Extract URL from Notion API response"
    icon = "link"
    name = "URLExtractor"

    inputs = [
        DataInput(
            name="notion_data",
            display_name="Notion Data",
            info="The Data object from Notion API response",
        ),
    ]

    outputs = [
        Output(display_name="Page URL", name="page_url", method="extract_url"),
    ]

    def extract_url(self) -> Message:
        try:
            # Get the raw data from the Data object
            response_data = self.notion_data.data
            
            # Extract URL and title
            url = response_data.get("url", "")
            title = response_data.get("properties", {}).get("Title", {}).get("title", [{}])[0].get("text", {}).get("content", "Untitled")
            
            # Return formatted message
            output = f"Created: '{title}'\n{url}"
            return Message(text=output)
            
        except Exception as e:
            return Message(text=f"Error extracting URL: {str(e)}")

Real Examples

Input: "need to refactor the user auth flow its getting messy with all the oauth providers maybe use passport.js or auth0"

Output in Notion:

• Title: Refactor Authentication Flow
• Content: The user authentication flow needs refactoring due to complexity from multiple OAuth providers. Consider implementing Passport.js or Auth0 for cleaner integration.
• Tags: #backend #authentication #refactoring
• Summary: Authentication system needs restructuring to handle OAuth providers more efficiently.

Make It Yours

Voice Input: Connect any speech-to-text tool
Batch Mode: Process multiple notes at once
Smart Tags: Train it on your existing tags
Auto-scheduling: Add calendar integration for time-based notes

The Files

Complete flow file and setup guide: github.com/huiskylabs/AI-notes-capture-organizer

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Built this in 15 minutes. Saved me hours already. Your messy notes deserve better.