From bd1fabf46e9ec669839b37efc32e99161918bdf7 Mon Sep 17 00:00:00 2001
From: Thomas Howe <ghostofbasho@gmail.com>
Date: Thu, 18 Sep 2025 18:15:12 -0400
Subject: [PATCH] Add vCon library API reference and update LLM guide

Added a comprehensive API reference for the vCon library in API_REFERENCE.md, detailing classes, methods, constants, and usage examples. Updated LLM_GUIDE.md to expand on vCon 0.3.0 features, including advanced party attributes, dialog types, extensions, civic address, party history, multimedia handling, security, validation, and best practices for LLM integration.
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 LLM_GUIDE.md     | 607 +++++++++++++++++++++++++++--
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+# vCon Library API Reference
+
+Complete API documentation for the vCon library - a Python implementation of the vCon 0.3.0 specification for Virtual Conversation objects.
+
+## Table of Contents
+
+- [Overview](#overview)
+- [Installation](#installation)
+- [Core Classes](#core-classes)
+  - [Vcon](#vcon-class)
+  - [Party](#party-class)
+  - [Dialog](#dialog-class)
+  - [CivicAddress](#civicaddress-class)
+  - [PartyHistory](#partyhistory-class)
+  - [Attachment](#attachment-class)
+- [Constants](#constants)
+- [Examples](#examples)
+
+## Overview
+
+The vCon library provides a complete Python implementation of the vCon 0.3.0 specification for representing virtual conversations. It supports all features including parties, dialogs, attachments, analysis, digital signatures, and extensibility.
+
+## Installation
+
+```bash
+pip install vcon
+```
+
+For image processing support:
+```bash
+pip install vcon[image]
+```
+
+## Core Classes
+
+### Vcon Class
+
+The main class for working with vCon objects.
+
+#### Constructor
+
+```python
+Vcon(vcon_dict: Dict[str, Any] = None, property_handling: str = "default", strict_version: bool = False)
+```
+
+**Parameters:**
+- `vcon_dict` (Dict[str, Any], optional): Dictionary representing a vCon. Defaults to empty dict.
+- `property_handling` (str): How to handle non-standard properties:
+  - `"default"`: Keep non-standard properties (default)
+  - `"strict"`: Remove non-standard properties
+  - `"meta"`: Move non-standard properties to meta object
+- `strict_version` (bool): If True, reject vCons not at version "0.3.0". Defaults to False.
+
+#### Class Methods
+
+##### `build_new() -> Vcon`
+Create a new vCon object with default values.
+
+```python
+vcon = Vcon.build_new()
+```
+
+##### `build_from_json(json_str: str, property_handling: str = "default", strict_version: bool = False) -> Vcon`
+Create a vCon object from JSON string.
+
+```python
+vcon = Vcon.build_from_json('{"uuid": "123", "vcon": "0.3.0"}')
+```
+
+##### `load(file_path_or_url: str, property_handling: str = "default", strict_version: bool = False) -> Vcon`
+Load a vCon from file or URL.
+
+```python
+# From file
+vcon = Vcon.load("conversation.vcon.json")
+
+# From URL
+vcon = Vcon.load("https://example.com/conversation.vcon.json")
+```
+
+##### `load_from_file(file_path: str, property_handling: str = "default", strict_version: bool = False) -> Vcon`
+Load a vCon from a local file.
+
+##### `load_from_url(url: str, property_handling: str = "default", strict_version: bool = False) -> Vcon`
+Load a vCon from a URL.
+
+##### `validate_file(file_path: str) -> Tuple[bool, List[str]]`
+Validate a vCon file.
+
+```python
+is_valid, errors = Vcon.validate_file("conversation.vcon.json")
+```
+
+##### `validate_json(json_str: str) -> Tuple[bool, List[str]]`
+Validate a vCon JSON string.
+
+##### `generate_key_pair() -> Tuple[rsa.RSAPrivateKey, rsa.RSAPublicKey]`
+Generate RSA key pair for digital signatures.
+
+```python
+private_key, public_key = Vcon.generate_key_pair()
+```
+
+##### `uuid8_domain_name(domain_name: str) -> str`
+Generate UUID8 with domain name.
+
+##### `uuid8_time(custom_c_62_bits: int) -> str`
+Generate UUID8 with custom time bits.
+
+#### Instance Methods
+
+##### Party Management
+
+###### `add_party(party: Party) -> None`
+Add a party to the vCon.
+
+```python
+party = Party(tel="+1234567890", name="Alice", role="caller")
+vcon.add_party(party)
+```
+
+###### `find_party_index(by: str, val: str) -> Optional[int]`
+Find party index by field value.
+
+```python
+index = vcon.find_party_index("tel", "+1234567890")
+```
+
+##### Dialog Management
+
+###### `add_dialog(dialog: Dialog) -> None`
+Add a dialog to the vCon.
+
+```python
+dialog = Dialog(type="text", start=datetime.now(), parties=[0, 1], body="Hello")
+vcon.add_dialog(dialog)
+```
+
+###### `find_dialog(by: str, val: str) -> Optional[Dialog]`
+Find dialog by field value.
+
+```python
+dialog = vcon.find_dialog("type", "text")
+```
+
+###### `find_dialogs_by_type(type: str) -> List[Dict[str, Any]]`
+Find all dialogs of a specific type.
+
+```python
+text_dialogs = vcon.find_dialogs_by_type("text")
+```
+
+###### `add_transfer_dialog(start: Union[datetime, str], transfer_data: Dict[str, Any], parties: List[int]) -> None`
+Add a transfer dialog.
+
+```python
+transfer_data = {
+    "transferee": 0,
+    "transferor": 1,
+    "transfer_target": 2
+}
+vcon.add_transfer_dialog(datetime.now(), transfer_data, [0, 1, 2])
+```
+
+###### `add_incomplete_dialog(start: Union[datetime, str], disposition: str, parties: List[int]) -> None`
+Add an incomplete dialog.
+
+```python
+vcon.add_incomplete_dialog(datetime.now(), "no-answer", [0])
+```
+
+##### Attachment Management
+
+###### `add_attachment(type: str, body: Any, encoding: str = "none") -> Attachment`
+Add an attachment to the vCon.
+
+```python
+attachment = vcon.add_attachment("transcript", "Full conversation...", "none")
+```
+
+###### `add_image(image_path: str, type: str = "image") -> Attachment`
+Add an image attachment from file.
+
+```python
+attachment = vcon.add_image("screenshot.png", "screenshot")
+```
+
+###### `find_attachment_by_type(type: str) -> Optional[Dict[str, Any]]`
+Find attachment by type.
+
+```python
+transcript = vcon.find_attachment_by_type("transcript")
+```
+
+##### Analysis Management
+
+###### `add_analysis(type: str, dialog: Union[int, List[int]], vendor: str, body: Any, encoding: str = "none") -> None`
+Add analysis data to the vCon.
+
+```python
+vcon.add_analysis(
+    type="sentiment",
+    dialog=[0, 1],
+    vendor="SentimentAnalyzer",
+    body={"sentiment": "positive", "confidence": 0.85},
+    encoding="json"
+)
+```
+
+###### `find_analysis_by_type(type: str) -> Optional[Dict[str, Any]]`
+Find analysis by type.
+
+```python
+sentiment = vcon.find_analysis_by_type("sentiment")
+```
+
+##### Tag Management
+
+###### `add_tag(tag_name: str, tag_value: str) -> None`
+Add a tag to the vCon.
+
+```python
+vcon.add_tag("customer_id", "12345")
+```
+
+###### `get_tag(tag_name: str) -> Optional[str]`
+Get a tag value.
+
+```python
+customer_id = vcon.get_tag("customer_id")
+```
+
+##### Extension Management
+
+###### `add_extension(extension: str) -> None`
+Add an extension to the vCon.
+
+```python
+vcon.add_extension("video")
+```
+
+###### `get_extensions() -> List[str]`
+Get list of extensions.
+
+```python
+extensions = vcon.get_extensions()
+```
+
+###### `remove_extension(extension: str) -> None`
+Remove an extension.
+
+```python
+vcon.remove_extension("video")
+```
+
+###### `add_must_support(extension: str) -> None`
+Add a must-support extension.
+
+```python
+vcon.add_must_support("encryption")
+```
+
+###### `get_must_support() -> List[str]`
+Get list of must-support extensions.
+
+```python
+must_support = vcon.get_must_support()
+```
+
+###### `remove_must_support(extension: str) -> None`
+Remove a must-support extension.
+
+##### Security
+
+###### `sign(private_key: Union[rsa.RSAPrivateKey, bytes]) -> None`
+Sign the vCon with a private key.
+
+```python
+vcon.sign(private_key)
+```
+
+###### `verify(public_key: Union[rsa.RSAPublicKey, bytes]) -> bool`
+Verify the vCon signature.
+
+```python
+is_valid = vcon.verify(public_key)
+```
+
+##### Validation
+
+###### `is_valid() -> Tuple[bool, List[str]]`
+Validate the vCon object.
+
+```python
+is_valid, errors = vcon.is_valid()
+```
+
+##### Serialization
+
+###### `to_json() -> str`
+Convert vCon to JSON string.
+
+```python
+json_str = vcon.to_json()
+```
+
+###### `to_dict() -> Dict[str, Any]`
+Convert vCon to dictionary.
+
+```python
+vcon_dict = vcon.to_dict()
+```
+
+###### `dumps() -> str`
+Alias for `to_json()`.
+
+###### `save_to_file(file_path: str) -> None`
+Save vCon to file.
+
+```python
+vcon.save_to_file("conversation.vcon.json")
+```
+
+##### HTTP Operations
+
+###### `post_to_url(url: str, headers: Optional[Dict[str, str]] = None) -> requests.Response`
+Post vCon to URL.
+
+```python
+response = vcon.post_to_url("https://api.example.com/vcon", headers={"Authorization": "Bearer token"})
+```
+
+##### Timestamp Management
+
+###### `set_created_at(created_at: Union[str, datetime]) -> None`
+Set the creation timestamp.
+
+###### `set_updated_at(timestamp: Union[str, datetime]) -> None`
+Set the update timestamp.
+
+#### Properties
+
+##### `uuid -> str`
+Get the vCon UUID.
+
+##### `vcon -> str`
+Get the vCon version.
+
+##### `subject -> Optional[str]`
+Get the vCon subject.
+
+##### `created_at`
+Get the creation timestamp.
+
+##### `updated_at`
+Get the update timestamp.
+
+##### `redacted`
+Get the redacted flag.
+
+##### `appended`
+Get the appended flag.
+
+##### `group`
+Get the group information.
+
+##### `meta`
+Get the metadata.
+
+##### `parties -> List[Party]`
+Get list of parties.
+
+##### `dialog -> List[Dict[str, Any]]`
+Get list of dialogs.
+
+##### `attachments -> List[Dict[str, Any]]`
+Get list of attachments.
+
+##### `analysis -> List[Dict[str, Any]]`
+Get list of analysis data.
+
+##### `tags -> Optional[Dict[str, Any]]`
+Get all tags.
+
+### Party Class
+
+Represents a participant in a vCon conversation.
+
+#### Constructor
+
+```python
+Party(
+    tel: Optional[str] = None,
+    stir: Optional[str] = None,
+    mailto: Optional[str] = None,
+    name: Optional[str] = None,
+    validation: Optional[str] = None,
+    gmlpos: Optional[str] = None,
+    civicaddress: Optional[CivicAddress] = None,
+    uuid: Optional[str] = None,
+    role: Optional[str] = None,
+    contact_list: Optional[str] = None,
+    meta: Optional[dict] = None,
+    sip: Optional[str] = None,
+    did: Optional[str] = None,
+    jCard: Optional[dict] = None,
+    timezone: Optional[str] = None,
+    **kwargs
+)
+```
+
+**Parameters:**
+- `tel` (str, optional): Telephone number
+- `stir` (str, optional): STIR identifier
+- `mailto` (str, optional): Email address
+- `name` (str, optional): Display name
+- `validation` (str, optional): Validation information
+- `gmlpos` (str, optional): GML position coordinates
+- `civicaddress` (CivicAddress, optional): Civic address information
+- `uuid` (str, optional): Unique identifier
+- `role` (str, optional): Role in conversation (e.g., "caller", "agent")
+- `contact_list` (str, optional): Contact list reference
+- `meta` (dict, optional): Additional metadata
+- `sip` (str, optional): SIP URI for VoIP communication
+- `did` (str, optional): Decentralized Identifier
+- `jCard` (dict, optional): vCard format contact information
+- `timezone` (str, optional): Party's timezone
+
+#### Methods
+
+##### `to_dict() -> Dict[str, Any]`
+Convert Party to dictionary.
+
+```python
+party_dict = party.to_dict()
+```
+
+### Dialog Class
+
+Represents a dialog segment in a vCon conversation.
+
+#### Constructor
+
+```python
+Dialog(
+    type: str,
+    start: Union[datetime, str],
+    parties: List[int],
+    originator: Optional[int] = None,
+    mimetype: Optional[str] = None,
+    filename: Optional[str] = None,
+    body: Optional[str] = None,
+    encoding: Optional[str] = None,
+    url: Optional[str] = None,
+    alg: Optional[str] = None,
+    signature: Optional[str] = None,
+    disposition: Optional[str] = None,
+    party_history: Optional[List[PartyHistory]] = None,
+    transferee: Optional[int] = None,
+    transferor: Optional[int] = None,
+    transfer_target: Optional[int] = None,
+    original: Optional[int] = None,
+    consultation: Optional[int] = None,
+    target_dialog: Optional[int] = None,
+    campaign: Optional[str] = None,
+    interaction: Optional[str] = None,
+    skill: Optional[str] = None,
+    duration: Optional[float] = None,
+    meta: Optional[dict] = None,
+    metadata: Optional[Dict[str, Any]] = None,
+    transfer: Optional[Dict[str, Any]] = None,
+    signaling: Optional[Dict[str, Any]] = None,
+    resolution: Optional[str] = None,
+    frame_rate: Optional[float] = None,
+    codec: Optional[str] = None,
+    bitrate: Optional[int] = None,
+    thumbnail: Optional[str] = None,
+    session_id: Optional[str] = None,
+    content_hash: Optional[str] = None,
+    application: Optional[str] = None,
+    message_id: Optional[str] = None,
+    **kwargs
+)
+```
+
+**Parameters:**
+- `type` (str): Dialog type ("text", "recording", "transfer", "incomplete", "audio", "video")
+- `start` (Union[datetime, str]): Start time
+- `parties` (List[int]): List of party indices
+- `originator` (int, optional): Originator party index
+- `mimetype` (str, optional): MIME type of content
+- `filename` (str, optional): Filename
+- `body` (str, optional): Content body
+- `encoding` (str, optional): Content encoding
+- `url` (str, optional): External URL
+- `alg` (str, optional): Signature algorithm
+- `signature` (str, optional): Content signature
+- `disposition` (str, optional): Disposition for incomplete dialogs
+- `party_history` (List[PartyHistory], optional): Party event history
+- `transferee` (int, optional): Transferee party index
+- `transferor` (int, optional): Transferor party index
+- `transfer_target` (int, optional): Transfer target party index
+- `original` (int, optional): Original dialog index
+- `consultation` (int, optional): Consultation dialog index
+- `target_dialog` (int, optional): Target dialog index
+- `campaign` (str, optional): Campaign identifier
+- `interaction` (str, optional): Interaction identifier
+- `skill` (str, optional): Skill identifier
+- `duration` (float, optional): Dialog duration
+- `meta` (dict, optional): Additional metadata
+- `metadata` (Dict[str, Any], optional): Structured metadata
+- `transfer` (Dict[str, Any], optional): Transfer-specific information
+- `signaling` (Dict[str, Any], optional): Signaling information
+- `resolution` (str, optional): Video resolution (e.g., "1920x1080")
+- `frame_rate` (float, optional): Video frame rate
+- `codec` (str, optional): Video codec
+- `bitrate` (int, optional): Video bitrate
+- `thumbnail` (str, optional): Base64-encoded thumbnail
+- `session_id` (str, optional): Session identifier
+- `content_hash` (str, optional): Content hash for external files
+- `application` (str, optional): Application identifier
+- `message_id` (str, optional): Message identifier
+
+#### Methods
+
+##### `to_dict() -> Dict[str, Any]`
+Convert Dialog to dictionary.
+
+##### `add_external_data(url: str, filename: str, mimetype: str) -> None`
+Add external data to dialog.
+
+##### `add_inline_data(body: str, filename: str, mimetype: str) -> None`
+Add inline data to dialog.
+
+##### `is_external_data() -> bool`
+Check if dialog has external data.
+
+##### `is_inline_data() -> bool`
+Check if dialog has inline data.
+
+##### `is_text() -> bool`
+Check if dialog is text type.
+
+##### `is_recording() -> bool`
+Check if dialog is recording type.
+
+##### `is_transfer() -> bool`
+Check if dialog is transfer type.
+
+##### `is_incomplete() -> bool`
+Check if dialog is incomplete type.
+
+##### `is_audio() -> bool`
+Check if dialog has audio content.
+
+##### `is_video(content_type: Optional[str] = None) -> bool`
+Check if dialog has video content.
+
+##### `is_email() -> bool`
+Check if dialog is email type.
+
+##### `is_image() -> bool`
+Check if dialog has image content.
+
+##### `is_pdf() -> bool`
+Check if dialog has PDF content.
+
+##### `add_video_data(video_data, filename: Optional[str] = None, mimetype: Optional[str] = None, inline: bool = True, metadata: Optional[dict] = None) -> None`
+Add video data to dialog.
+
+##### `extract_video_metadata(video_path: Optional[str] = None) -> dict`
+Extract video metadata using FFmpeg.
+
+##### `generate_thumbnail(timestamp: float = 0.0, width: int = 320, height: int = 240, quality: int = 90) -> bytes`
+Generate video thumbnail.
+
+##### `add_streaming_video_reference(reference_id: str, mimetype: str, metadata: Optional[dict] = None) -> None`
+Add streaming video reference.
+
+##### `add_video_with_optimal_storage(video_data, filename: str, mimetype: Optional[str] = None, size_threshold_mb: int = 10) -> None`
+Add video with optimal storage method.
+
+##### `transcode_video(target_format: str, codec: Optional[str] = None, bit_rate: Optional[int] = None, width: Optional[int] = None, height: Optional[int] = None) -> None`
+Transcode video to different format.
+
+##### `add_image_data(image_path: str, mimetype: Optional[str] = None) -> None`
+Add image data from file.
+
+##### `extract_image_metadata(image_data: bytes, mimetype: str) -> None`
+Extract image metadata.
+
+##### `generate_thumbnail(max_size: Tuple[int, int] = (200, 200)) -> Optional[str]`
+Generate image thumbnail.
+
+##### `is_external_data_changed() -> bool`
+Check if external data has changed.
+
+##### `to_inline_data() -> None`
+Convert external data to inline data.
+
+##### `set_session_id(session_id: str) -> None`
+Set session identifier.
+
+##### `get_session_id() -> Optional[str]`
+Get session identifier.
+
+##### `set_content_hash(content_hash: str) -> None`
+Set content hash.
+
+##### `get_content_hash() -> Optional[str]`
+Get content hash.
+
+##### `calculate_content_hash(algorithm: str = "sha256") -> str`
+Calculate content hash.
+
+##### `verify_content_hash(expected_hash: str, algorithm: str = "sha256") -> bool`
+Verify content hash.
+
+### CivicAddress Class
+
+Represents civic address information according to GEOPRIV specification.
+
+#### Constructor
+
+```python
+CivicAddress(
+    country: Optional[str] = None,
+    a1: Optional[str] = None,
+    a2: Optional[str] = None,
+    a3: Optional[str] = None,
+    a4: Optional[str] = None,
+    a5: Optional[str] = None,
+    a6: Optional[str] = None,
+    prd: Optional[str] = None,
+    pod: Optional[str] = None,
+    sts: Optional[str] = None,
+    hno: Optional[str] = None,
+    hns: Optional[str] = None,
+    lmk: Optional[str] = None,
+    loc: Optional[str] = None,
+    flr: Optional[str] = None,
+    nam: Optional[str] = None,
+    pc: Optional[str] = None
+)
+```
+
+**Parameters:**
+- `country` (str, optional): Country code (ISO 3166-1 alpha-2)
+- `a1` (str, optional): Administrative area 1 (state/province)
+- `a2` (str, optional): Administrative area 2 (county/municipality)
+- `a3` (str, optional): Administrative area 3 (city/town)
+- `a4` (str, optional): Administrative area 4 (neighborhood/district)
+- `a5` (str, optional): Administrative area 5 (postal code)
+- `a6` (str, optional): Administrative area 6 (building/floor)
+- `prd` (str, optional): Premier (department/suite number)
+- `pod` (str, optional): Post office box identifier
+- `sts` (str, optional): Street name
+- `hno` (str, optional): House number
+- `hns` (str, optional): House name
+- `lmk` (str, optional): Landmark name
+- `loc` (str, optional): Location name
+- `flr` (str, optional): Floor
+- `nam` (str, optional): Name of location
+- `pc` (str, optional): Postal code
+
+#### Methods
+
+##### `to_dict() -> Dict[str, Optional[str]]`
+Convert CivicAddress to dictionary.
+
+### PartyHistory Class
+
+Represents party history events in a vCon dialog.
+
+#### Constructor
+
+```python
+PartyHistory(party: int, event: str, time: datetime)
+```
+
+**Parameters:**
+- `party` (int): Index of the party
+- `event` (str): Event type ("join", "drop", "hold", "unhold", "mute", "unmute")
+- `time` (datetime): Time of the event
+
+#### Methods
+
+##### `to_dict() -> Dict[str, Any]`
+Convert PartyHistory to dictionary.
+
+### Attachment Class
+
+Represents an attachment in a vCon.
+
+#### Constructor
+
+```python
+Attachment(type: str, body: Any, encoding: str = "none")
+```
+
+**Parameters:**
+- `type` (str): Type of attachment
+- `body` (Any): Content of attachment
+- `encoding` (str): Encoding format ("base64", "base64url", "none")
+
+#### Methods
+
+##### `to_dict() -> Dict[str, Any]`
+Convert Attachment to dictionary.
+
+##### `from_image(image_path: str, type: str = "image") -> 'Attachment'`
+Create attachment from image file.
+
+## Constants
+
+### Property Handling Modes
+
+```python
+PROPERTY_HANDLING_DEFAULT = "default"  # Keep non-standard properties
+PROPERTY_HANDLING_STRICT = "strict"    # Remove non-standard properties
+PROPERTY_HANDLING_META = "meta"        # Move non-standard properties to meta
+```
+
+### Dialog Types
+
+```python
+VALID_TYPES = ["recording", "text", "transfer", "incomplete", "audio", "video"]
+```
+
+### Disposition Values
+
+```python
+VALID_DISPOSITIONS = [
+    "no-answer", "congestion", "failed", "busy", 
+    "hung-up", "voicemail-no-message"
+]
+```
+
+### Party History Events
+
+```python
+VALID_EVENTS = ["join", "drop", "hold", "unhold", "mute", "unmute"]
+```
+
+### Attachment Encodings
+
+```python
+VALID_ENCODINGS = ["base64", "base64url", "none"]
+```
+
+### Supported MIME Types
+
+```python
+MIME_TYPES = [
+    "text/plain",
+    "audio/x-wav", "audio/wav", "audio/wave", "audio/mpeg", "audio/mp3",
+    "audio/x-mp3", "audio/x-mp4", "audio/ogg", "audio/webm", "audio/x-m4a", "audio/aac",
+    "video/x-mp4", "video/ogg", "video/mp4", "video/quicktime", "video/webm",
+    "video/x-msvideo", "video/x-matroska", "video/mpeg", "video/x-flv", "video/3gpp", "video/x-m4v",
+    "multipart/mixed", "message/rfc822",
+    "image/jpeg", "image/tiff", "application/pdf", "application/json"
+]
+```
+
+## Examples
+
+### Basic vCon Creation
+
+```python
+from vcon import Vcon
+from vcon.party import Party
+from vcon.dialog import Dialog
+from datetime import datetime
+
+# Create new vCon
+vcon = Vcon.build_new()
+
+# Add parties
+caller = Party(tel="+1234567890", name="Alice", role="caller")
+agent = Party(tel="+1987654321", name="Bob", role="agent")
+vcon.add_party(caller)
+vcon.add_party(agent)
+
+# Add dialog
+dialog = Dialog(
+    type="text",
+    start=datetime.now(),
+    parties=[0, 1],
+    originator=0,
+    body="Hello, I need help with my account."
+)
+vcon.add_dialog(dialog)
+
+# Save to file
+vcon.save_to_file("conversation.vcon.json")
+```
+
+### Loading and Validation
+
+```python
+# Load vCon
+vcon = Vcon.load("conversation.vcon.json")
+
+# Validate
+is_valid, errors = vcon.is_valid()
+if not is_valid:
+    print("Validation errors:", errors)
+
+# Access data
+print(f"UUID: {vcon.uuid}")
+print(f"Parties: {len(vcon.parties)}")
+print(f"Dialogs: {len(vcon.dialog)}")
+```
+
+### Digital Signatures
+
+```python
+# Generate key pair
+private_key, public_key = Vcon.generate_key_pair()
+
+# Sign vCon
+vcon.sign(private_key)
+
+# Verify signature
+is_valid = vcon.verify(public_key)
+print(f"Signature valid: {is_valid}")
+```
+
+### Extensions and Must-Support
+
+```python
+# Add extensions
+vcon.add_extension("video")
+vcon.add_extension("encryption")
+
+# Add must-support
+vcon.add_must_support("encryption")
+
+print(f"Extensions: {vcon.get_extensions()}")
+print(f"Must support: {vcon.get_must_support()}")
+```
+
+### Analysis and Attachments
+
+```python
+# Add analysis
+vcon.add_analysis(
+    type="sentiment",
+    dialog=[0, 1],
+    vendor="SentimentAnalyzer",
+    body={"sentiment": "positive", "confidence": 0.85},
+    encoding="json"
+)
+
+# Add attachment
+vcon.add_attachment(
+    type="transcript",
+    body="Full conversation transcript...",
+    encoding="none"
+)
+
+# Add tags
+vcon.add_tag("customer_id", "12345")
+vcon.add_tag("priority", "high")
+```
+
+### Video Content
+
+```python
+# Add video dialog
+video_dialog = Dialog(
+    type="video",
+    start=datetime.now(),
+    parties=[0, 1],
+    mimetype="video/mp4",
+    resolution="1920x1080",
+    frame_rate=30.0,
+    codec="H.264"
+)
+
+# Add video data
+video_dialog.add_video_data(
+    video_data=binary_video_data,
+    filename="recording.mp4",
+    mimetype="video/mp4",
+    inline=True
+)
+
+# Extract metadata
+metadata = video_dialog.extract_video_metadata()
+
+# Generate thumbnail
+thumbnail = video_dialog.generate_thumbnail(timestamp=10.0)
+
+vcon.add_dialog(video_dialog)
+```
+
+### Civic Address
+
+```python
+from vcon.civic_address import CivicAddress
+
+# Create civic address
+address = CivicAddress(
+    country="US",
+    a1="CA",
+    a3="San Francisco",
+    sts="Market Street",
+    hno="123",
+    pc="94102"
+)
+
+# Add to party
+party = Party(
+    name="Jane",
+    tel="+1555123456",
+    civicaddress=address
+)
+```
+
+### Party History
+
+```python
+from vcon.party import PartyHistory
+
+# Create party history
+history = [
+    PartyHistory(0, "join", datetime.now()),
+    PartyHistory(1, "join", datetime.now()),
+    PartyHistory(0, "hold", datetime.now()),
+    PartyHistory(0, "unhold", datetime.now()),
+    PartyHistory(1, "drop", datetime.now())
+]
+
+# Add to dialog
+dialog = Dialog(
+    type="recording",
+    start=datetime.now(),
+    parties=[0, 1],
+    party_history=history
+)
+```
+
+### HTTP Operations
+
+```python
+# Post vCon to server
+response = vcon.post_to_url(
+    "https://api.example.com/vcon",
+    headers={
+        "Authorization": "Bearer your-token",
+        "Content-Type": "application/json"
+    }
+)
+
+if response.status_code == 200:
+    print("Successfully posted vCon")
+else:
+    print(f"Error: {response.status_code}")
+```
+
+### Property Handling
+
+```python
+# Strict mode - remove non-standard properties
+vcon = Vcon.load("file.json", property_handling="strict")
+
+# Meta mode - move non-standard properties to meta
+vcon = Vcon.load("file.json", property_handling="meta")
+
+# Default mode - keep all properties
+vcon = Vcon.load("file.json", property_handling="default")
+```
+
+This API reference covers all the main functionality of the vCon library. For more detailed examples and use cases, see the [Quickstart Guide](QUICKSTART.md) and the [samples directory](samples/).
diff --git a/LLM_GUIDE.md b/LLM_GUIDE.md
index 26380d9..87be55a 100644
--- a/LLM_GUIDE.md
+++ b/LLM_GUIDE.md
@@ -4,22 +4,41 @@ This guide provides a comprehensive overview of the vCon (Virtual Conversation)
 
 ## Overview
 
-The vCon library is a Python tool for structuring, managing, and manipulating conversation data in a standardized format called vCon (Virtual Conversation). It enables the creation, validation, and manipulation of digital representations of conversations with rich metadata.
+The vCon library is a Python implementation of the vCon 0.3.0 specification for structuring, managing, and manipulating conversation data in a standardized format. It enables the creation, validation, and manipulation of digital representations of conversations with rich metadata, supporting all modern conversation features including multimedia content, security, and extensibility.
 
 ### Key Concepts
 
 - **vCon Container**: The primary object that holds all conversation data
-- **Parties**: Participants in a conversation (callers, agents, bots)
-- **Dialogs**: Individual messages or segments of the conversation
+- **Parties**: Participants in a conversation (callers, agents, bots) with contact information
+- **Dialogs**: Individual messages or segments of the conversation (text, audio, video, etc.)
 - **Attachments**: Additional files or data associated with the conversation
 - **Analysis**: Results from processing the conversation (sentiment analysis, transcription, etc.)
+- **Extensions**: Optional features that extend the base vCon functionality
+- **Digital Signatures**: Cryptographic verification of vCon integrity
+- **Civic Addresses**: Location information for parties using GEOPRIV standard
+- **Party History**: Event tracking for multi-party conversations
 
 ## Installation
 
 ```bash
+# Basic installation
 pip install vcon
+
+# With image processing support (Pillow, PyPDF)
+pip install vcon[image]
+
+# From source
+git clone https://github.com/vcon-dev/vcon-lib.git
+cd vcon-lib
+pip install -e .
 ```
 
+## Requirements
+
+- Python 3.12+
+- Core dependencies: authlib, uuid6, requests, pydash, python-dateutil
+- Optional: mutagen (audio metadata), ffmpeg (video processing), Pillow (image processing), PyPDF (PDF processing)
+
 ## Core Classes and Usage Patterns
 
 ### 1. Vcon Class
@@ -104,16 +123,28 @@ party_index = vcon.find_party_index("name", "Alice Smith")  # Returns index (0-b
 
 #### Party Attributes
 
-- `tel`: Telephone number
-- `name`: Display name
-- `role`: Role in conversation (e.g., "caller", "agent")
-- `mailto`: Email address
-- `uuid`: Unique identifier
-- `stir`: STIR verification
+**Core Contact Information:**
+- `tel`: Telephone number (e.g., "+1234567890")
+- `name`: Display name (e.g., "Alice Smith")
+- `role`: Role in conversation ("caller", "agent", "bot", etc.)
+- `mailto`: Email address (e.g., "alice@example.com")
+
+**Advanced Contact Methods (vCon 0.3.0):**
+- `sip`: SIP URI for VoIP communication (e.g., "sip:alice@example.com")
+- `did`: Decentralized Identifier for blockchain-based identity
+- `jCard`: vCard format contact information (RFC 7095)
+- `timezone`: Party's timezone (e.g., "America/New_York")
+
+**Location and Validation:**
+- `civicaddress`: Civic address using CivicAddress class (GEOPRIV format)
+- `gmlpos`: GML position coordinates
 - `validation`: Validation status
-- `gmlpos`: Geographic position
-- `civicaddress`: Civic address (using CivicAddress class)
-- `meta`: Additional metadata
+- `stir`: STIR verification for secure telephony
+
+**Metadata:**
+- `uuid`: Unique identifier for the party
+- `contact_list`: Reference to contact list
+- `meta`: Additional metadata dictionary
 - Custom attributes can be added via kwargs
 
 ### 3. Dialog Class
@@ -191,20 +222,38 @@ is_video = dialog.is_video()
 is_email = dialog.is_email()
 ```
 
-#### Supported MIME Types
+#### Dialog Types and MIME Types
+
+**Valid Dialog Types:**
+- `"text"`: Text-based communication (chat, SMS, email)
+- `"recording"`: Audio/video recording
+- `"transfer"`: Call transfer operation
+- `"incomplete"`: Failed or incomplete conversation setup
+- `"audio"`: Audio content
+- `"video"`: Video content
 
+**Supported MIME Types:**
+
+**Text:**
 - `text/plain`
+
+**Audio:**
 - `audio/x-wav`, `audio/wav`, `audio/wave`
-- `audio/mpeg`, `audio/mp3`
-- `audio/ogg`
-- `audio/webm`
-- `audio/x-m4a`
-- `audio/aac`
-- `video/x-mp4`
-- `video/ogg`
+- `audio/mpeg`, `audio/mp3`, `audio/x-mp3`
+- `audio/x-mp4`, `audio/ogg`, `audio/webm`
+- `audio/x-m4a`, `audio/aac`
+
+**Video:**
+- `video/x-mp4`, `video/mp4`, `video/ogg`
+- `video/quicktime`, `video/webm`
+- `video/x-msvideo`, `video/x-matroska`
+- `video/mpeg`, `video/x-flv`, `video/3gpp`, `video/x-m4v`
+
+**Other:**
 - `multipart/mixed`
 - `message/rfc822` (for email)
 - `application/json` (for signaling data)
+- `image/jpeg`, `image/tiff`, `application/pdf`
 
 ### 4. Working with Tags
 
@@ -263,7 +312,126 @@ vcon.add_analysis(
 analysis = vcon.find_analysis_by_type("sentiment")
 ```
 
-## 7. Security and Validation
+### 7. Extensions and Must-Support (vCon 0.3.0)
+
+Extensions allow vCons to declare optional features they use, while must-support indicates required features.
+
+```python
+# Add extensions used in this vCon
+vcon.add_extension("video")
+vcon.add_extension("encryption")
+vcon.add_extension("sentiment_analysis")
+
+# Add extensions that must be supported by consumers
+vcon.add_must_support("encryption")
+vcon.add_must_support("video")
+
+# Get extensions
+extensions = vcon.get_extensions()  # ['video', 'encryption', 'sentiment_analysis']
+must_support = vcon.get_must_support()  # ['encryption', 'video']
+
+# Remove extensions
+vcon.remove_extension("sentiment_analysis")
+vcon.remove_must_support("video")
+```
+
+### 8. Civic Address Support (vCon 0.3.0)
+
+Civic addresses provide location information for parties using the GEOPRIV standard.
+
+```python
+from vcon.civic_address import CivicAddress
+
+# Create civic address
+address = CivicAddress(
+    country="US",
+    a1="CA",  # State
+    a3="San Francisco",  # City
+    sts="Market Street",  # Street
+    hno="123",  # House number
+    pc="94102"  # Postal code
+)
+
+# Add to party
+party = Party(
+    name="Jane Doe",
+    tel="+1555123456",
+    civicaddress=address
+)
+
+# Convert to dictionary
+address_dict = address.to_dict()
+```
+
+### 9. Party History Events (vCon 0.3.0)
+
+Track when parties join, leave, or change state during conversations.
+
+```python
+from vcon.party import PartyHistory
+from datetime import datetime
+
+# Create party history events
+history = [
+    PartyHistory(0, "join", datetime.now()),    # Party 0 joins
+    PartyHistory(1, "join", datetime.now()),    # Party 1 joins
+    PartyHistory(0, "hold", datetime.now()),    # Party 0 on hold
+    PartyHistory(0, "unhold", datetime.now()),  # Party 0 off hold
+    PartyHistory(1, "drop", datetime.now())     # Party 1 drops
+]
+
+# Add to dialog
+dialog = Dialog(
+    type="recording",
+    start=datetime.now(),
+    parties=[0, 1],
+    party_history=history
+)
+
+# Valid event types: "join", "drop", "hold", "unhold", "mute", "unmute"
+```
+
+### 10. Advanced Dialog Features (vCon 0.3.0)
+
+New dialog fields for enhanced functionality.
+
+```python
+# Dialog with session tracking and content hashing
+dialog = Dialog(
+    type="text",
+    start=datetime.now(),
+    parties=[0, 1],
+    originator=0,
+    body="Hello, this is a test message!",
+    session_id="session-12345",
+    content_hash="c8d3d67f662a787e96e74ccb0a77803138c0f13495a186ccbde495c57c385608",
+    application="chat-app",
+    message_id="<message-id@example.com>"
+)
+
+# Video dialog with metadata
+video_dialog = Dialog(
+    type="video",
+    start=datetime.now(),
+    parties=[0, 1],
+    mimetype="video/mp4",
+    resolution="1920x1080",
+    frame_rate=30.0,
+    codec="H.264",
+    bitrate=5000000,
+    filename="recording.mp4"
+)
+
+# Incomplete dialog with disposition
+incomplete_dialog = Dialog(
+    type="incomplete",
+    start=datetime.now(),
+    parties=[0],
+    disposition="no-answer"  # Valid: no-answer, congestion, failed, busy, hung-up, voicemail-no-message
+)
+```
+
+## 11. Security and Validation
 
 ### Signing and Verification
 
@@ -388,6 +556,95 @@ if dialog.is_inline_data():
     print("Dialog contains embedded content")
 ```
 
+### 4. Video Content Handling
+
+```python
+# Add video data with metadata
+video_dialog = Dialog(
+    type="video",
+    start=datetime.now(),
+    parties=[0, 1],
+    mimetype="video/mp4",
+    resolution="1920x1080",
+    frame_rate=30.0,
+    codec="H.264"
+)
+
+# Add video data (inline or external)
+video_dialog.add_video_data(
+    video_data=binary_video_data,  # or URL string
+    filename="recording.mp4",
+    mimetype="video/mp4",
+    inline=True,  # False for external reference
+    metadata={"duration": 120, "quality": "high"}
+)
+
+# Extract video metadata using FFmpeg
+metadata = video_dialog.extract_video_metadata()
+
+# Generate thumbnail
+thumbnail_data = video_dialog.generate_thumbnail(
+    timestamp=10.0,  # Time in seconds
+    width=320,
+    height=240,
+    quality=90
+)
+
+# Transcode video to different format
+video_dialog.transcode_video(
+    target_format="webm",
+    codec="vp9",
+    bit_rate=2000000,
+    width=1280,
+    height=720
+)
+```
+
+### 5. Image Content Handling
+
+```python
+# Add image data from file
+image_dialog = Dialog(
+    type="text",  # Can be any type
+    start=datetime.now(),
+    parties=[0, 1]
+)
+
+# Add image from file
+image_dialog.add_image_data(
+    image_path="screenshot.png",
+    mimetype="image/jpeg"  # Optional, auto-detected if not provided
+)
+
+# Generate thumbnail
+thumbnail_b64 = image_dialog.generate_thumbnail(max_size=(200, 200))
+
+# Check if dialog has image content
+if image_dialog.is_image():
+    print("Dialog contains image content")
+
+# Check for PDF content
+if image_dialog.is_pdf():
+    print("Dialog contains PDF content")
+```
+
+### 6. Content Hashing and Integrity
+
+```python
+# Calculate content hash
+content_hash = dialog.calculate_content_hash("sha256")
+
+# Set content hash for external files
+dialog.set_content_hash(content_hash)
+
+# Verify content integrity
+is_valid = dialog.verify_content_hash(expected_hash, "sha256")
+
+# Check if external data has changed
+if dialog.is_external_data_changed():
+    print("External content has been modified")
+```
+
 ## Error Handling
 
 ```python
@@ -419,13 +676,309 @@ vcon = Vcon(vcon_dict, property_handling="strict")
 vcon = Vcon(vcon_dict, property_handling="meta")
 ```
 
+## LLM-Specific Patterns and Best Practices
+
+### 1. Code Generation Templates
+
+When generating vCon code, use these templates as starting points:
+
+#### Basic Conversation Template
+```python
+from vcon import Vcon
+from vcon.party import Party
+from vcon.dialog import Dialog
+from datetime import datetime
+
+def create_basic_conversation():
+    # Create vCon
+    vcon = Vcon.build_new()
+    
+    # Add parties
+    caller = Party(tel="+1234567890", name="Caller", role="caller")
+    agent = Party(tel="+1987654321", name="Agent", role="agent")
+    vcon.add_party(caller)
+    vcon.add_party(agent)
+    
+    # Add conversation
+    vcon.add_dialog(Dialog(
+        type="text",
+        start=datetime.now().isoformat(),
+        parties=[0, 1],
+        originator=0,
+        body="Hello, I need help."
+    ))
+    
+    return vcon
+```
+
+#### Multimedia Conversation Template
+```python
+def create_multimedia_conversation():
+    vcon = Vcon.build_new()
+    
+    # Add parties with enhanced contact info
+    caller = Party(
+        tel="+1234567890",
+        name="Alice",
+        role="caller",
+        mailto="alice@example.com",
+        timezone="America/New_York"
+    )
+    agent = Party(
+        tel="+1987654321", 
+        name="Bob",
+        role="agent",
+        sip="sip:bob@company.com"
+    )
+    vcon.add_party(caller)
+    vcon.add_party(agent)
+    
+    # Add text dialog
+    vcon.add_dialog(Dialog(
+        type="text",
+        start=datetime.now().isoformat(),
+        parties=[0, 1],
+        originator=0,
+        body="Hello, I need help with my account."
+    ))
+    
+    # Add audio dialog
+    vcon.add_dialog(Dialog(
+        type="recording",
+        start=datetime.now().isoformat(),
+        parties=[0, 1],
+        mimetype="audio/mp3",
+        filename="conversation.mp3"
+    ))
+    
+    # Add analysis
+    vcon.add_analysis(
+        type="sentiment",
+        dialog=[0, 1],
+        vendor="SentimentAnalyzer",
+        body={"sentiment": "positive", "confidence": 0.85},
+        encoding="json"
+    )
+    
+    return vcon
+```
+
+### 2. Common LLM Tasks
+
+#### Converting Chat History to vCon
+```python
+def chat_to_vcon(chat_messages, participants):
+    vcon = Vcon.build_new()
+    
+    # Add participants as parties
+    party_map = {}
+    for i, participant in enumerate(participants):
+        party = Party(
+            name=participant.get("name", f"User {i}"),
+            role=participant.get("role", "participant")
+        )
+        vcon.add_party(party)
+        party_map[participant["id"]] = i
+    
+    # Add messages as dialogs
+    for message in chat_messages:
+        vcon.add_dialog(Dialog(
+            type="text",
+            start=message["timestamp"],
+            parties=[party_map[message["sender_id"]]],
+            originator=party_map[message["sender_id"]],
+            body=message["content"]
+        ))
+    
+    return vcon
+```
+
+#### Adding AI Analysis to vCon
+```python
+def add_ai_analysis(vcon, analysis_type, results, dialog_indices=None):
+    if dialog_indices is None:
+        dialog_indices = list(range(len(vcon.dialog)))
+    
+    vcon.add_analysis(
+        type=analysis_type,
+        dialog=dialog_indices,
+        vendor="AI-Analyzer",
+        body=results,
+        encoding="json"
+    )
+    
+    # Add extension if using AI features
+    vcon.add_extension("ai_analysis")
+```
+
+#### Extracting Conversation Data
+```python
+def extract_conversation_data(vcon):
+    data = {
+        "uuid": vcon.uuid,
+        "created_at": vcon.created_at,
+        "parties": [],
+        "dialogs": [],
+        "analysis": []
+    }
+    
+    # Extract parties
+    for party in vcon.parties:
+        data["parties"].append({
+            "name": getattr(party, "name", None),
+            "role": getattr(party, "role", None),
+            "tel": getattr(party, "tel", None)
+        })
+    
+    # Extract dialogs
+    for dialog in vcon.dialog:
+        data["dialogs"].append({
+            "type": dialog.get("type"),
+            "start": dialog.get("start"),
+            "body": dialog.get("body", "")[:100] + "..." if len(dialog.get("body", "")) > 100 else dialog.get("body", ""),
+            "parties": dialog.get("parties", [])
+        })
+    
+    # Extract analysis
+    for analysis in vcon.analysis:
+        data["analysis"].append({
+            "type": analysis.get("type"),
+            "vendor": analysis.get("vendor"),
+            "dialog_count": len(analysis.get("dialog", []))
+        })
+    
+    return data
+```
+
+### 3. Error Handling Patterns
+
+```python
+def safe_vcon_operation(operation_func, *args, **kwargs):
+    """Safely execute vCon operations with proper error handling."""
+    try:
+        return operation_func(*args, **kwargs)
+    except ValueError as e:
+        return {"error": f"Validation error: {str(e)}", "success": False}
+    except FileNotFoundError as e:
+        return {"error": f"File not found: {str(e)}", "success": False}
+    except Exception as e:
+        return {"error": f"Unexpected error: {str(e)}", "success": False}
+
+# Usage
+result = safe_vcon_operation(Vcon.load, "conversation.json")
+if not result.get("success", True):
+    print(f"Error: {result['error']}")
+```
+
+### 4. Validation Patterns
+
+```python
+def validate_and_fix_vcon(vcon):
+    """Validate vCon and attempt to fix common issues."""
+    is_valid, errors = vcon.is_valid()
+    
+    if is_valid:
+        return {"valid": True, "errors": []}
+    
+    fixes_applied = []
+    
+    # Fix common issues
+    for error in errors:
+        if "missing uuid" in error.lower():
+            # UUID is auto-generated, this shouldn't happen
+            pass
+        elif "invalid dialog type" in error.lower():
+            # Try to fix invalid dialog types
+            for dialog in vcon.dialog:
+                if dialog.get("type") not in ["text", "recording", "transfer", "incomplete", "audio", "video"]:
+                    dialog["type"] = "text"  # Default to text
+                    fixes_applied.append(f"Fixed invalid dialog type: {dialog.get('type')}")
+    
+    # Re-validate after fixes
+    is_valid, remaining_errors = vcon.is_valid()
+    
+    return {
+        "valid": is_valid,
+        "errors": remaining_errors,
+        "fixes_applied": fixes_applied
+    }
+```
+
+### 5. Integration Patterns
+
+#### REST API Integration
+```python
+def vcon_to_api_payload(vcon):
+    """Convert vCon to API payload format."""
+    return {
+        "vcon": vcon.to_dict(),
+        "metadata": {
+            "version": vcon.vcon,
+            "created_at": vcon.created_at,
+            "party_count": len(vcon.parties),
+            "dialog_count": len(vcon.dialog)
+        }
+    }
+
+def api_payload_to_vcon(payload):
+    """Convert API payload to vCon."""
+    return Vcon(payload["vcon"])
+```
+
+#### Database Integration
+```python
+def vcon_to_database_record(vcon):
+    """Convert vCon to database record format."""
+    return {
+        "id": vcon.uuid,
+        "version": vcon.vcon,
+        "created_at": vcon.created_at,
+        "updated_at": vcon.updated_at,
+        "data": vcon.to_json(),
+        "party_count": len(vcon.parties),
+        "dialog_count": len(vcon.dialog),
+        "has_attachments": len(vcon.attachments) > 0,
+        "has_analysis": len(vcon.analysis) > 0
+    }
+```
+
+### 6. Performance Considerations
+
+```python
+def optimize_vcon_for_storage(vcon):
+    """Optimize vCon for storage by converting large content to external references."""
+    for i, dialog in enumerate(vcon.dialog):
+        if dialog.get("body") and len(dialog["body"]) > 1000000:  # 1MB threshold
+            # In real implementation, upload to storage and get URL
+            external_url = f"https://storage.example.com/dialog_{i}_content"
+            dialog["url"] = external_url
+            dialog["content_hash"] = dialog.calculate_content_hash()
+            del dialog["body"]
+            dialog["encoding"] = None
+
+def optimize_vcon_for_processing(vcon):
+    """Optimize vCon for processing by loading external content."""
+    for dialog in vcon.dialog:
+        if dialog.is_external_data():
+            try:
+                dialog.to_inline_data()
+            except Exception as e:
+                print(f"Failed to load external content: {e}")
+```
+
 ## Conclusion
 
 The vCon library provides a comprehensive framework for working with conversation data. When generating code:
 
-1. Start by creating a vCon container with `Vcon.build_new()`
-2. Add parties using the `Party` class and `vcon.add_party()`
-3. Add dialog entries using the `Dialog` class and `vcon.add_dialog()`
-4. Add metadata with `vcon.add_tag()`, attachments with `vcon.add_attachment()`, and analysis with `vcon.add_analysis()`
-5. Validate the vCon with `vcon.is_valid()`
-6. Save with `vcon.save_to_file()` or export with `vcon.to_json()`
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+1. **Start Simple**: Begin with `Vcon.build_new()` and basic Party/Dialog objects
+2. **Add Rich Metadata**: Use tags, attachments, and analysis for comprehensive data
+3. **Handle Multimedia**: Leverage video/image processing capabilities when needed
+4. **Ensure Security**: Use digital signatures for integrity verification
+5. **Validate Always**: Check vCon validity before saving or transmitting
+6. **Handle Errors Gracefully**: Implement proper error handling for robust applications
+7. **Consider Performance**: Optimize for storage or processing based on use case
+8. **Use Extensions**: Declare optional features and must-support requirements
+9. **Track Events**: Use party history for complex multi-party conversations
+10. **Integrate Seamlessly**: Follow patterns for API and database integration
+
+The vCon 0.3.0 specification provides a robust foundation for modern conversation data management with support for multimedia content, security, and extensibility.
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