diff --git a/README.md b/README.md
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+++ b/README.md
@@ -10,10 +10,10 @@ This project is currently in alpha stage and is not recommended for production u
 
 - 🤖 Multiple Agent Support
 - 🔄 Autonomous Agent Management
-- 🔗 Blockchain Integration (CDP for now, will add more)
+- 🔗 Blockchain Integration (EVM for now, will add more)
 - 🐦 Social Media Integration (Twitter,Telegram for now, will add more)
 - 🛠️ Extensible Skill System
-- 🔌 Extensible Plugin System
+- 🔌 Extensible Plugin System (WIP)
 
 ## Quick Start
 
@@ -142,6 +142,21 @@ See `example.env` for all available options.
 
 Contributions are welcome! Please read our [Contributing Guidelines](CONTRIBUTING.md) before submitting a pull request.
 
+### Contribute Skills
+
+If you want to add a skill collection, follow these steps:
+
+1. Create a new skill collection in the `skills/` directory
+2. Implement the skill interface
+3. Register the skill in `skill/YOUR_SKILL_COLLECTION/__init__.py`
+
+If you want to add a new skill, follow these steps:
+
+1. Create a new skill in the `skills/common/` directory
+2. Register the skill in `skills/common/__init__.py`
+
+See the [Skill Development Guide](docs/contributing/skills.md) for more information.
+
 ## License
 
 This project is licensed under the MIT License - see the [LICENSE](LICENSE) file for details.
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diff --git a/docs/contributing/skills.md b/docs/contributing/skills.md
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@@ -0,0 +1,201 @@
+# Building Skills for IntentKit
+
+This guide will help you create new skills for IntentKit. Skills are the building blocks that give agents their capabilities.
+
+## Overview
+
+A skill in IntentKit is a specialized tool that inherits from `IntentKitSkill` (which extends LangChain's `BaseTool`). Each skill provides specific functionality that agents can use to interact with external services or perform specific tasks.
+
+## Basic Structure
+
+Every skill consists of at least two components:
+
+1. A skill class that inherits from `IntentKitSkill`
+2. Input/Output models using Pydantic
+
+### Example Structure
+```python
+from pydantic import BaseModel
+from abstracts.skill import IntentKitSkill
+
+class MySkillInput(BaseModel):
+    """Input parameters for your skill"""
+    param1: str
+    param2: int = 10  # with default value
+
+class MySkillOutput(BaseModel):
+    """Output format for your skill"""
+    result: str
+    error: str | None = None
+
+class MySkill(IntentKitSkill):
+    name: str = "my_skill_name"
+    description: str = "Description of what your skill does"
+    args_schema: Type[BaseModel] = MySkillInput
+
+    def _run(self, param1: str, param2: int = 10) -> MySkillOutput:
+        try:
+            # Your skill implementation here
+            result = f"Processed {param1} {param2} times"
+            return MySkillOutput(result=result)
+        except Exception as e:
+            return MySkillOutput(result="", error=str(e))
+
+    async def _arun(self, param1: str, param2: int = 10) -> MySkillOutput:
+        """Async implementation if needed"""
+        return await self._run(param1, param2)
+```
+
+## Key Components
+
+### 1. Input/Output Models
+
+- Use Pydantic models to define input parameters and output structure
+- Input model will be used as `args_schema` in your skill
+- Output model ensures consistent return format
+
+### 2. Skill Class
+
+Required attributes:
+- `name`: Unique identifier for your skill
+- `description`: Clear description of what the skill does
+- `args_schema`: Pydantic model for input validation
+
+Required methods:
+- `_run`: Synchronous implementation of your skill
+- `_arun`: Asynchronous implementation (if needed)
+
+### 3. State Management
+
+Skills have access to persistent storage through `self.store`, which implements `SkillStoreABC`:
+
+```python
+# Store agent-specific data
+self.store.save_agent_skill_data(
+    self.agent_id,  # automatically provided
+    self.name,      # your skill name
+    "key_name",     # custom key for your data
+    {"data": "value"}  # any JSON-serializable data
+)
+
+# Retrieve agent-specific data
+data = self.store.get_agent_skill_data(
+    self.agent_id,
+    self.name,
+    "key_name"
+)
+
+# Store thread-specific data
+self.store.save_thread_skill_data(
+    thread_id,      # provided in context
+    self.agent_id,
+    self.name,
+    "key_name",
+    {"data": "value"}
+)
+
+# Retrieve thread-specific data
+data = self.store.get_thread_skill_data(
+    thread_id,
+    self.name,
+    "key_name"
+)
+```
+
+## Best Practices
+
+1. **Error Handling**
+   - Always wrap your main logic in try-except blocks
+   - Return errors through your output model rather than raising exceptions
+   - Provide meaningful error messages
+
+2. **Documentation**
+   - Add detailed docstrings to your skill class and methods
+   - Document input parameters and return values
+   - Include usage examples in docstrings
+
+3. **Input Validation**
+   - Use Pydantic models to validate inputs
+   - Set appropriate field types and constraints
+   - Provide default values when sensible
+
+4. **State Management**
+   - Use `self.store` for persistent data storage
+   - Keep agent-specific data separate from thread-specific data
+   - Use meaningful keys for stored data
+
+5. **Async Support**
+   - Implement `_arun` for skills that perform I/O operations
+   - Use async libraries when available
+   - Maintain consistent behavior between sync and async implementations
+
+## Example: Twitter Timeline Skill
+
+Here's a real-world example of a skill that fetches tweets from a user's timeline:
+
+```python
+class TwitterGetTimelineInput(BaseModel):
+    """Empty input model as no parameters needed"""
+    pass
+
+class Tweet(BaseModel):
+    """Model representing a Twitter tweet"""
+    id: str
+    text: str
+    author_id: str
+    created_at: datetime
+    referenced_tweets: list[dict] | None = None
+    attachments: dict | None = None
+
+class TwitterGetTimelineOutput(BaseModel):
+    tweets: list[Tweet]
+    error: str | None = None
+
+class TwitterGetTimeline(TwitterBaseTool):
+    name: str = "twitter_get_timeline"
+    description: str = "Get tweets from the authenticated user's timeline"
+    args_schema: Type[BaseModel] = TwitterGetTimelineInput
+
+    def _run(self) -> TwitterGetTimelineOutput:
+        try:
+            # Get last processed tweet ID from storage
+            last = self.store.get_agent_skill_data(self.agent_id, self.name, "last")
+            since_id = last.get("since_id") if last else None
+
+            # Fetch timeline
+            timeline = self.client.get_home_timeline(...)
+
+            # Process and return results
+            result = [Tweet(...) for tweet in timeline.data]
+            
+            # Update storage with newest tweet ID
+            if timeline.meta:
+                self.store.save_agent_skill_data(
+                    self.agent_id,
+                    self.name,
+                    "last",
+                    {"since_id": timeline.meta["newest_id"]}
+                )
+
+            return TwitterGetTimelineOutput(tweets=result)
+        except Exception as e:
+            return TwitterGetTimelineOutput(tweets=[], error=str(e))
+```
+
+## Testing Your Skill
+
+1. Create unit tests in the `tests/skills` directory
+2. Test both success and error cases
+3. Mock external services and dependencies
+4. Verify state management behavior
+5. Test both sync and async implementations
+
+## Contributing
+
+1. Create your skill in the `skills/` directory
+2. Follow the structure of existing skills
+3. Add comprehensive tests
+4. Update documentation
+5. Submit a pull request
+
+For more examples, check the existing skills in the `skills/` directory.