Session Management

Session Management

Session manages conversation messages, tracks context usage, and extracts long-term memories.

Overview

Lifecycle: Create → Interact → Commit

session = client.session(session_id="chat_001")
session.add_message("user", [TextPart("...")])
session.commit()

Core API

add_message

session.add_message(
    "user",
    [TextPart("How to configure embedding?")]
)

session.add_message(
    "assistant",
    [
        TextPart("Here's how..."),
        ContextPart(uri="viking://user/memories/profile.md"),
    ]
)

used

# Record used contexts
session.used(contexts=["viking://user/memories/profile.md"])

# Record used skill
session.used(skill={
    "uri": "viking://agent/skills/code-search",
    "input": "search config",
    "output": "found 3 files",
    "success": True
})

commit

result = session.commit()
# {
#   "status": "committed",
#   "memories_extracted": 5,
#   "active_count_updated": 2,
#   "archived": True
# }

Message Structure

Message

@dataclass
class Message:
    id: str              # msg_{UUID}
    role: str            # "user" | "assistant"
    parts: List[Part]    # Message parts
    created_at: datetime

Part Types

Compression Strategy

Archive Flow

Auto-archive on commit():

1. Increment compression_index
2. Copy current messages to archive directory
3. Generate structured summary (LLM)
4. Clear current messages list

Summary Format

# Session Summary

**One-line overview**: [Topic]: [Intent] | [Result] | [Status]

## Analysis
Key steps list

## Primary Request and Intent
User's core goal

## Key Concepts
Key technical concepts

## Pending Tasks
Unfinished tasks

Memory Extraction

6 Categories

Extraction Flow

Messages → LLM Extract → Candidate Memories
              ↓
Vector Pre-filter → Find Similar Memories
              ↓
LLM Dedup Decision → CREATE/UPDATE/MERGE/SKIP
              ↓
Write to AGFS → Vectorize

Dedup Decisions

Storage Structure

viking://session/{session_id}/
├── messages.jsonl            # Current messages
├── .abstract.md              # Current abstract
├── .overview.md              # Current overview
├── history/
│   ├── archive_001/
│   │   ├── messages.jsonl
│   │   ├── .abstract.md
│   │   └── .overview.md
│   └── archive_NNN/
└── tools/
    └── {tool_id}/tool.json

viking://user/memories/
├── profile.md                # Append-only user profile
├── preferences/
├── entities/
└── events/

viking://agent/memories/
├── cases/
└── patterns/

Related Documents

• Architecture Overview - System architecture
• Context Types - Three context types
• Context Extraction - Extraction flow
• Context Layers - L0/L1/L2 model