brainy/docs/conversation

Infinite Agent Memory - Conversation API

Never lose context again. Brainy's Conversation API provides infinite memory and context management for AI agents like Claude Code, enabling truly continuous conversations with semantic search, smart context retrieval, and automatic knowledge preservation.

Overview

The Conversation API turns your agent interactions into a living knowledge graph where:

• Every message is preserved with semantic embeddings for instant retrieval
• Context is automatically retrieved using Triple Intelligence (vector + graph + metadata)
• Similar conversations are discovered through neural clustering
• Code artifacts are linked to the conversations that created them
• Memory scales infinitely to millions of messages with <100ms retrieval

Quick Start

Zero-Config Usage

import { Brainy } from '@soulcraft/brainy'

const brain = new Brainy()  // Zero configuration!
await brain.init()

// Access conversation manager (lazy-loaded)
const conv = brain.conversation

// Save messages with automatic embedding and indexing
const messageId = await conv.saveMessage(
  "How do I implement JWT authentication?",
  "user",
  { conversationId: "conv_123" }
)

// Get relevant context with semantic search
const context = await conv.getRelevantContext("authentication implementation", {
  limit: 10,
  includeArtifacts: true
})

// Context includes:
// - Semantically similar messages
// - Recent related conversations
// - Linked code artifacts
// - Relevance scores and explanations

Claude Code Integration (MCP)

One-time setup:

brainy conversation setup

That's it! Claude Code automatically:

• Saves every message with embeddings
• Retrieves relevant past context
• Links code artifacts to conversations
• Never loses context or momentum

Core Concepts

1. Messages

Every message is a semantic entity with:

• Content: The actual message text
• Role: user, assistant, system, or tool
• Embeddings: Automatic vector representation
• Metadata: Timestamps, conversation ID, phase, confidence, etc.
• Relationships: Temporal links to previous/next messages

const messageId = await conv.saveMessage(
  "Implement user authentication",
  "user",
  {
    conversationId: "conv_123",
    phase: "planning",
    confidence: 0.95,
    tags: ["authentication", "security"]
  }
)

2. Conversations

A conversation is a collection of related messages:

• Tracked by conversationId
• Contains temporal message sequence
• Stores aggregate metadata (tokens, duration, participants)
• Can span multiple sessions

const thread = await conv.getConversationThread("conv_123", {
  includeArtifacts: true
})

console.log(`${thread.messages.length} messages, ${thread.metadata.totalTokens} tokens`)

3. Context Retrieval

Smart context retrieval uses Triple Intelligence:

• Semantic: Vector similarity to find related messages
• Temporal: Recency decay favors recent context
• Graph: Relationship traversal finds connected knowledge

const context = await conv.getRelevantContext("how to validate JWT tokens", {
  limit: 10,
  maxTokens: 50000,
  relevanceThreshold: 0.7,
  weights: {
    semantic: 1.0,  // Prioritize meaning
    temporal: 0.5,  // Recent is relevant
    graph: 0.3      // Connected knowledge
  }
})

4. Artifacts

Code and files created during conversations are first-class citizens:

• Stored in Brainy's Virtual Filesystem
• Linked to messages via graph relationships
• Searchable by content and metadata
• Retrieved with context

const artifactId = await conv.saveArtifact(
  '/auth/middleware.ts',
  codeContent,
  {
    conversationId: "conv_123",
    messageId: messageId,
    type: 'code',
    language: 'typescript'
  }
)

API Reference

ConversationManager

saveMessage(content, role, options)

Save a message with automatic embedding.

Parameters:

• content (string): Message content
• role (MessageRole): 'user' | 'assistant' | 'system' | 'tool'
• options (SaveMessageOptions):
  • conversationId?: Conversation ID (auto-generated if not provided)
  • sessionId?: Session ID
  • phase?: Problem-solving phase
  • confidence?: Confidence score (0-1)
  • artifacts?: Array of artifact IDs
  • toolsUsed?: Array of tool names
  • tags?: Array of tags
  • linkToPrevious?: ID of previous message

Returns: Promise<string> - Message ID

Example:

const id = await conv.saveMessage(
  "Implement authentication middleware",
  "assistant",
  {
    conversationId: "conv_123",
    phase: "implementation",
    confidence: 0.92,
    artifacts: ["middleware-id"],
    toolsUsed: ["write", "edit"],
    tags: ["authentication", "middleware"]
  }
)

getRelevantContext(query, options)

Retrieve relevant context with smart ranking.

Parameters:

• query (string | ContextRetrievalOptions): Query or full options
• options? (ContextRetrievalOptions):
  • limit?: Max messages (default: 10)
  • maxTokens?: Token budget (default: 50000)
  • relevanceThreshold?: Min score (default: 0.7)
  • role?: Filter by role
  • phase?: Filter by phase
  • tags?: Filter by tags
  • timeRange?: Time range filter
  • weights?: Scoring weights
  • includeArtifacts?: Include linked artifacts
  • includeSimilarConversations?: Include similar conversations

Returns: Promise<ConversationContext>

Example:

const context = await conv.getRelevantContext({
  query: "JWT token validation",
  limit: 15,
  maxTokens: 60000,
  role: "assistant",
  phase: ["implementation", "testing"],
  tags: ["authentication"],
  includeArtifacts: true,
  includeSimilarConversations: true
})

console.log(`Found ${context.messages.length} relevant messages`)
console.log(`Total tokens: ${context.totalTokens}`)
console.log(`Query time: ${context.metadata.queryTime}ms`)

searchMessages(options)

Search messages with semantic similarity.

Parameters:

• options (ConversationSearchOptions):
  • query: Search query (required)
  • limit?: Max results (default: 10)
  • role?: Filter by role
  • conversationId?: Filter by conversation
  • sessionId?: Filter by session
  • timeRange?: Time range filter

Returns: Promise<ConversationSearchResult[]>

Example:

const results = await conv.searchMessages({
  query: "authentication errors",
  limit: 20,
  role: "assistant",
  timeRange: {
    start: Date.now() - 7*24*60*60*1000 // Last 7 days
  }
})

for (const result of results) {
  console.log(`${result.message.role}: ${result.snippet}`)
  console.log(`Score: ${result.score}, Conv: ${result.conversationId}`)
}

getConversationThread(conversationId, options)

Get complete conversation thread.

Parameters:

• conversationId (string): Conversation ID
• options?:
  • includeArtifacts?: Include linked artifacts

Returns: Promise<ConversationThread>

Example:

const thread = await conv.getConversationThread("conv_123", {
  includeArtifacts: true
})

console.log(`Conversation: ${thread.id}`)
console.log(`Messages: ${thread.metadata.messageCount}`)
console.log(`Duration: ${new Date(thread.metadata.endTime) - new Date(thread.metadata.startTime)}ms`)

for (const msg of thread.messages) {
  console.log(`[${msg.role}] ${msg.content}`)
}

findSimilarConversations(conversationId, limit, threshold)

Find similar past conversations.

Parameters:

• conversationId (string): Conversation to find similar to
• limit? (number): Max results (default: 5)
• threshold? (number): Min similarity (default: 0.7)

Returns: Promise<Array<{id, relevance, metadata}>>

Example:

const similar = await conv.findSimilarConversations("conv_123", 5, 0.75)

for (const s of similar) {
  console.log(`Similar conversation: ${s.id}`)
  console.log(`Relevance: ${s.relevance.toFixed(2)}`)
}

getConversationThemes(conversationId)

Discover themes via clustering.

Parameters:

• conversationId (string): Conversation ID

Returns: Promise<ConversationTheme[]>

Example:

const themes = await conv.getConversationThemes("conv_123")

for (const theme of themes) {
  console.log(`Theme: ${theme.label}`)
  console.log(`Messages: ${theme.messages.length}`)
  console.log(`Coherence: ${theme.coherence}`)
}

saveArtifact(path, content, options)

Save code/file artifact.

Parameters:

• path (string): VFS path
• content (string | Buffer): File content
• options (ArtifactOptions):
  • conversationId: Conversation ID (required)
  • messageId?: Message ID to link
  • type?: 'code' | 'config' | 'data' | 'document' | 'other'
  • language?: Programming language
  • description?: Artifact description

Returns: Promise<string> - Artifact ID

Example:

const artifactId = await conv.saveArtifact(
  '/auth/jwt-middleware.ts',
  middlewareCode,
  {
    conversationId: "conv_123",
    messageId: messageId,
    type: 'code',
    language: 'typescript',
    description: 'JWT authentication middleware'
  }
)

getConversationStats(conversationId?)

Get conversation statistics.

Parameters:

• conversationId? (string): Optional conversation to filter

Returns: Promise<ConversationStats>

Example:

const stats = await conv.getConversationStats()

console.log(`Total conversations: ${stats.totalConversations}`)
console.log(`Total messages: ${stats.totalMessages}`)
console.log(`Total tokens: ${stats.totalTokens}`)
console.log(`By role:`, stats.roles)
console.log(`By phase:`, stats.phases)

exportConversation(conversationId)

Export conversation to JSON.

Returns: Promise<any> - Serializable conversation object

importConversation(data)

Import conversation from JSON.

Returns: Promise<string> - New conversation ID

Advanced Usage

Custom Relevance Weights

Fine-tune context retrieval:

const context = await conv.getRelevantContext(query, {
  weights: {
    semantic: 0.6,  // Less weight on exact matching
    temporal: 0.8,  // More weight on recent messages
    graph: 0.4      // Moderate weight on relationships
  }
})

Phase-Based Filtering

Track problem-solving progress:

const planningMessages = await conv.searchMessages({
  query: "authentication approach",
  role: "assistant",
  phase: ["planning", "analysis"]
})

Time-Based Analysis

Analyze conversation evolution:

const recentContext = await conv.getRelevantContext(query, {
  timeRange: {
    start: Date.now() - 24*60*60*1000  // Last 24 hours
  }
})

Multi-Session Conversations

Track across sessions:

// Session 1
await conv.saveMessage(content1, "user", {
  conversationId: "conv_123",
  sessionId: "session_1"
})

// Session 2 (different day)
await conv.saveMessage(content2, "user", {
  conversationId: "conv_123",  // Same conversation!
  sessionId: "session_2"
})

Performance

• Message save: <50ms (with embedding)
• Context retrieval: <100ms (10 messages)
• Search: <150ms (1000s of messages)
• Theme clustering: <500ms
• Scales to: 10M+ messages
• Storage: Efficient vector + graph storage

Next Steps

• MCP Integration Guide - Claude Code setup
• API Reference - Complete API documentation
• Examples - Code examples and patterns
• Advanced Features - Advanced usage and optimization