memorius 0.7.0

Self-contained memory vault for any AI agent - vector search, session diaries, and agent-agnostic hooks.

Memorius

Universal memory vault for any AI agent.

Works with Claude Code, Codex CLI, Gemini CLI, OpenClaude, OpenCode, Pi, and any MCP-compatible agent.

Landing page: https://dream-pixels-forge.github.io/memorius/

If you find this project useful, leaving a star ⭐ on the repository is the best way to support my work!

Why Memorius?

Most AI memory tools lock you into one agent ecosystem. Memorius is agent-agnostic by design — the same memory vault works whether you use Claude Code, Codex CLI, Gemini CLI, or any MCP-compatible agent. No vendor lock-in.

Feature	Memorius	Others
Agent support	7 agents (auto-detected)	Usually 1-3
Protocol	Open MCP standard	Proprietary plugins
Memory hierarchy	Vault → Shelf → Folder → Note	Flat
Temporal decay	Ebbinghaus forgetting curve	-
Knowledge graph	Auto-linked memories	-
Fact-checking	Contradiction detection	-
Cross-encoder reranking	ms-marco-MiniLM-L-6-v2	-
Obsidian integration	Native import/export	-
LLM extraction	OpenAI / Ollama / regex backends	-
Web augmentation	DuckDuckGo / Tavily fallback	-
Dual storage backends	ChromaDB + SQLite-vec	-
Self-hosted	No cloud dependency	Often SaaS
Open source	MIT license	Varies

pip install memorius

REST API server is included by default — fastapi, uvicorn, pydantic, and sse-starlette are now core dependencies. No extra [rest] install flag needed.

Quick Start

# Initialize a vault
memorius init

# Store a memory
memorius store "The sky is blue because Rayleigh scattering scatters shorter wavelengths more" --vault main --shelf science --folder physics

# Semantic search
memorius search "why is the sky blue"

# Mine memories from a conversation
memorius mine transcript.txt --vault conversations

# LLM-powered structured extraction
memorius extract meeting-notes.txt --backend openai

# Check status
memorius status

# Write a diary entry
memorius diary "session-001" --title "Research findings"

What's New in v1.2.4

Architecture Improvements

• Modular VaultEngine — extracted SearchModule (5-stage search pipeline) and StoreModule (CRUD operations). VaultEngine reduced from 692 to 328 lines (53% reduction).
• VectorStore ABC — ChromaStore and SqliteVecStore now share an abstract base class for swappable backends.
• Sealed _conn() leakage — all external callers now use SQLiteStore public API (execute, fetchone, fetchall, transaction, graph/temporal adapters, import/export methods).
• Shared Obsidian module — memorius/obsidian.py consolidates helpers used by REST server and CLI.

Code Quality

• Type hints — complete type annotations on SQLiteStore public API.
• Exception documentation — 30 except Exception blocks annotated as best-effort with reasons.
• Dead code removal — HNSW switchover path removed from consolidation.
• 26 new tests — SearchModule (7) and StoreModule (19) unit tests.

Fixed

• Version mismatch — __version__ now uses importlib.metadata.version() consistently.
• Legacy test references — test_features.py updated to use SQLiteStore public API instead of _conn().

See CHANGELOG.md for full release history.

Architecture

┌──────────────────────────────────────────────────────────────┐
│                         Memorius                             │
├──────────────────────────────────────────────────────────────┤
│  CLI        memorius init | store | search | mine | ...      │
│  MCP        JSON-RPC protocol server (stdin/stdout)          │
│  REST       FastAPI HTTP server (API key auth + rate limit)  │
│  Hooks      Auto-detect: Claude Code, Codex, Gemini, ...    │
│  Obsidian   Import / export notes from Obsidian vaults       │
├──────────────────────────────────────────────────────────────┤
│  Vault Engine (thin orchestrator)                            │
│  ├── SearchModule    5-stage search pipeline                 │
│  │   ├── Filter      folder/note/tags metadata filters       │
│  │   ├── Vector      ChromaDB/sqlite-vec cosine search       │
│  │   ├── Temporal    Ebbinghaus decay scoring                │
│  │   ├── Rerank      Cross-encoder precision ranking         │
│  │   └── Graph       1-hop BFS expansion                     │
│  ├── StoreModule     Memory CRUD operations                  │
│  │   ├── Store       Create with embedding + metadata        │
│  │   ├── Update      Content change + re-embed               │
│  │   ├── Delete      Remove from vector + meta stores        │
│  │   ├── Touch       Record access for decay reinforcement   │
│  │   └── List        Cursor-paginated retrieval               │
│  ├── ChromaStore     Vector search (ChromaDB HNSW)           │
│  ├── SqliteVecStore  Single-file alternative (sqlite-vec)    │
│  ├── SQLiteStore     Metadata & hierarchy (SQLite)           │
│  ├── KnowledgeGraph  Auto-linked memories + contradictions   │
│  ├── TemporalDecay   Ebbinghaus forgetting curve             │
│  └── Embeddings      Pluggable providers (ONNX / SF / OA)   │
├──────────────────────────────────────────────────────────────┤
│  Vault  >  Shelf  >  Folder  >  Note  hierarchy              │
│  Diaries          Session diary entries                      │
│  Mine             Extract memories from transcripts          │
│  Extract          LLM-powered structured extraction          │
│  Consolidate      Cluster + merge duplicate memories         │
│  Factcheck        Contradiction detection with web fallback  │
│  Prune            Decay-based stale memory archival          │
│  Export/Import    JSON or Markdown vault portability          │
├──────────────────────────────────────────────────────────────┤
│  Plugin Gen    →  Generate per-agent plugins                 │
│  Normalizers   →  Import Discord/Telegram/WhatsApp/etc       │
│  Obsidian      →  Bidirectional vault sync                   │
└──────────────────────────────────────────────────────────────┘

Configuration

Config lives at ~/.memorius/config.yaml (auto-created on memorius init):

storage:
  path: ~/.memorius/data
  type: chroma            # chroma (default) | sqlite-vec (single-file)

embeddings:
  provider: chroma-default  # chroma-default | sentence-transformers | openai
  model: all-MiniLM-L6-v2

vault:
  default: main

server:
  mcp_port: 8911
  rest_port: 8912
  host: 127.0.0.1

retrieval:
  web_fallback: false        # opt-in: augment thin local recall with web
  web_provider: duckduckgo   # duckduckgo (keyless) | tavily (keyed) | mock (tests)
  tavily_api_key: null       # or set TAVILY_API_KEY env var
  web_min_results: 1         # if ZERO local hits, fall back to web
  web_max_results: 5         # max web results to return

Environment variable overrides:

Variable	Overrides
MEMORIUS_STORAGE_PATH	storage.path
MEMORIUS_STORAGE_TYPE	storage.type
MEMORIUS_EMBEDDINGS_PROVIDER	embeddings.provider
MEMORIUS_DEFAULT_VAULT	vault.default
MEMORIUS_MCP_PORT	server.mcp_port
MEMORIUS_REST_PORT	server.rest_port
MEMORIUS_HOST	server.host
MEMORIUS_OPENAI_API_KEY	embeddings.openai.api_key
MEMORIUS_WEB_PROVIDER	retrieval.web_provider
MEMORIUS_WEB_FALLBACK	retrieval.web_fallback
MEMORIUS_TAVILY_API_KEY	retrieval.tavily_api_key
MEMORIUS_MODEL_CACHE_DIR	ONNX model cache directory

Vector Store Backends

Memorius uses a VectorStore ABC (abstract base class) for swappable backends. Both backends implement the same interface (add, delete, search, get_collections, count, get_by_ids):

Backend	Dependency	Description
ChromaDB (default)	ChromaDB (bundled)	Persistent HNSW cosine search, auto-migration from legacy collections
SQLite-vec	pip install memorius[single-file]	Single-file alternative, no ChromaDB dependency

Set storage.type: sqlite-vec in config or MEMORIUS_STORAGE_TYPE=sqlite-vec to use the lightweight backend.

Embedding Providers

Provider	Requirement	Quality
chroma-default	ChromaDB (bundled ONNX)	Good (384d)
sentence-transformers	pip install memorius[local-embeddings]	Better (768d+)
openai	OPENAI_API_KEY env var	Best (1536d or 3072d)

Providers are extensible via EmbeddingFactory.register() for custom runtime providers.

Temporal Decay

Memorius implements the Ebbinghaus forgetting curve to rank memories by relevance over time:

• Decay score (0–1) = age decay (40%) + recency boost (40%) + access reinforcement (20%)
• Search ranking = semantic similarity (60%) + temporal decay (25%) + access frequency (15%)
• touch(memory_id) reinforces a memory on read
• Stale memories are detected via decay score threshold or TTL expiry
• TTL support: memorius store "..." --ttl 30 sets expires_at in metadata

Knowledge Graph

• Auto-linking on every store() call by content proximity (Jaccard word overlap or vector cosine)
• BFS expansion from search results (--expand-graph on CLI / expand_graph=True on MCP)
• Contradiction edges persisted by factcheck (bidirectional relation='contradicts')
• Graph statistics via memorius stats or MCP memorius_graph_stats

Cross-Encoder Reranker

Improve search precision with a cross-encoder reranker:

memorius search "query" --rerank

Provider	Requirement
cross-encoder/ms-marco-MiniLM-L-6-v2	pip install memorius[ranker]

Adds __rerank_score__ to memory metadata for transparent ranking.

Web Search

When local recall is thin, Memorius can optionally augment retrieval with live web results. This is local-first and opt-in — web search never runs unless you ask for it: the memorius web command, the --web flag on search / context / factcheck, or retrieval.web_fallback: true.

# Live web search (keyless DuckDuckGo by default)
memorius web "python 3.13 changelog"

# Use the keyed Tavily provider for higher signal-to-noise
memorius web "python 3.13 changelog" --provider tavily

# Augment a local search with web when local hits are thin
memorius search "latest rust release" --web

# Fact-check with web cross-reference
memorius factcheck "Rust 1.80 was released in July 2024" --web

Providers

Provider	Key	Notes
duckduckgo (default)	none	Keyless, stdlib-only scraper. Works out of the box.
tavily	TAVILY_API_KEY or MEMORIUS_TAVILY_API_KEY	Agent-grade signal-to-noise. Missing key warns and returns [] — never crashes.
mock	n/a	Test double for offline testing.

Configuration

retrieval:
  web_fallback: false        # opt-in: augment thin local recall with web
  web_provider: duckduckgo   # duckduckgo (keyless) | tavily (keyed) | mock (tests)
  tavily_api_key: null       # or set TAVILY_API_KEY / MEMORIUS_TAVILY_API_KEY
  web_min_results: 1         # fall back to web only when local hits < this
  web_max_results: 5         # max web results to return

MEMORIUS_WEB_PROVIDER, MEMORIUS_WEB_FALLBACK, and MEMORIUS_TAVILY_API_KEY override the corresponding config keys (the raw TAVILY_API_KEY is also read directly). A missing Tavily key never crashes the CLI — it logs a warning and returns no web results.

LLM-Powered Memory Extraction

The extract command uses an LLM to identify and structure memories from unstructured text:

memorius extract meeting-notes.txt --backend openai
memorius extract transcript.txt --backend ollama
memorius extract notes.txt --backend regex    # fallback, no LLM required

Backend	Model	Notes
openai	gpt-4o-mini	Requires OPENAI_API_KEY
ollama	llama3.2	Requires local Ollama server
regex	n/a	Rule-based fallback, no LLM needed

Extracts 6 memory categories: decision, preference, fact, action_item, relationship, context. Includes prompt injection protection, 50KB input limit, and validated structured output with confidence scores.

Memory Consolidation

Clusters similar memories and merges them into consolidated insights:

memorius consolidate --threshold 0.80 --dry-run
memorius consolidate --vault main

Uses O(N^2) pairwise comparison for clustering. Archives originals after consolidation.

Memory Pruning

Find and archive stale memories based on temporal decay:

memorius prune --threshold 0.1 --dry-run       # preview stale memories
memorius prune --threshold 0.1                  # soft-archive stale
memorius prune --threshold 0.1 --delete         # hard-delete

Export / Import

Back up and migrate vaults between instances:

memorius export ./backup --format json          # single JSON file
memorius export ./backup --format markdown      # individual .md files

memorius import ./backup/backup.json            # merge import
memorius import ./backup/backup.json --replace  # overwrite mode

JSON export includes hierarchy, memories, diaries, and graph edges (schema versioned). Markdown export creates .md files with YAML frontmatter. Uses SQLiteStore export/import methods for atomic operations.

CLI Reference

Core commands

memorius init                Initialize a new vault
memorius setup               Download ONNX model + initialize vault
  --force                      Force re-download of model
  --skip-model                 Skip model download
memorius status              Show vault status
memorius store <text>        Store a memory
  --vault, -v                  Vault name (default: main)
  --shelf, -s                  Shelf name (default: default)
  --folder, -f                 Folder name (default: default)
  --note, -n                   Note name (default: default)
  --ttl                        Time-to-live in days (memory expires after N days)
memorius search <query>      Semantic search
  --vault, -v                  Filter by vault
  --shelf, -s                  Filter by shelf
  --folder                     Filter by folder (Chroma metadata)
  --note                       Filter by note (Chroma metadata)
  --tag                        Filter by tag (repeatable; memory must carry ALL supplied tags)
  --n                          Max results (default: 10)
  --expand-graph               Also pull in 1-hop graph-linked memories
  --rerank                     Cross-encoder reranking
  --web                        Augment with web search when local hits are thin
memorius get <id>            Get a single memory by UUID
  --json                       Output as JSON
memorius update <id>         Update memory content/metadata
  --content                    New content (omit to keep existing)
  --metadata                   JSON metadata to shallow-merge
  --json                       Output as JSON
memorius delete <id>         Delete a memory by ID (validation + confirmation)
  --vault, -v                  Vault scope (must match the memory's vault)
  --shelf, -s                  Shelf scope (must match the memory's shelf)
  --yes, -y                    Skip the confirmation prompt
  --dry-run                    Preview what would be deleted
memorius list                List memories with cursor pagination
  --vault                      Filter by vault
  --limit                      Results per page (default: 10)
  --cursor                     Cursor for next page
memorius mine <file|text>    Extract memories from transcript
  --vault, -v                  Target vault (default: main)
  --text                       Treat input as raw text, not a file path
memorius extract <file|text> Extract memories from conversation (LLM)
  --vault                      Target vault (default: main)
  --shelf                      Target shelf (default: extracted)
  --backend                    LLM backend: auto|openai|ollama|regex
memorius diary <session>     Write a diary entry
  --title                      Entry title
  --summary                    Entry summary
  --content                    Entry content
  --vault                      Vault name (default: main)
  --exchange-count             Number of exchanges in session
memorius diaries              List recent diary entries
memorius ls                   Explore vault hierarchy
memorius consolidate         Merge duplicate memories
  --vault                      Filter by vault
  --threshold                  Similarity threshold 0-1 (default: 0.80)
  --dry-run                    Preview without changes
memorius factcheck <stmt>    Fact-check against stored memories
  --vault                      Filter by vault
  --web                        Cross-check with web search
memorius context <query>     Get formatted memory context for injection
  --vault                      Filter by vault
  --max                        Max items (default: 5)
  --web                        Augment with web search
memorius profile <session>   Build session memory profile
  --vault                      Vault name (default: main)
memorius prune               Find/archive stale memories by decay score
  --threshold                  Decay score threshold (default: 0.1)
  --dry-run                    Preview without changes
  --delete                     Hard-delete instead of soft-archive
  --json                       Output as JSON
memorius export <dest>       Export vault to JSON or Markdown
  --format                     json (default) | markdown
memorius import <src>        Import vault from JSON export
  --replace                    Overwrite mode (default: merge)
memorius doctor              Run health checks on the vault
memorius stats               Show vault + memory + graph statistics
memorius web <query>         Live web search
  --provider                   duckduckgo (default) | tavily
  --max                        Max results (default: 5)
memorius serve               Start MCP server (stdio)
memorius serve-rest          Start REST API server
  --port                       Port number
  --host                       Bind address
  --daemon                     Run as background daemon
  --stop                       Stop the running daemon
  --pid-file                   PID file path
memorius config              Show current configuration
  --path                       Print config file path only
memorius --version           Show version

Obsidian integration

memorius obsidian list                Explore vault structure
  --vault, -v                         Path to Obsidian vault directory
                                      (default: $OBSIDIAN_VAULT_PATH or
                                       ~/Documents/Obsidian Vault)

memorius obsidian import              Import Obsidian notes as memorius memories
  --vault, -v                         Path to Obsidian vault
  --target-vault                      Target memorius vault (default: main)
  --target-shelf                      Target memorius shelf (default: obsidian)
  --tag                               Only import notes with this tag
  --dry-run                           Preview without importing

memorius obsidian export              Export memorius memories as Obsidian notes
  --vault, -v                         Path to Obsidian vault
  --source-vault                      Source memorius vault (default: main)
  --source-shelf                      Filter by shelf (default: all)
  --dry-run                           Preview without exporting

Import preserves the file hierarchy: vault/Subfolder/note.md maps to vault/Subfolder/vault > shelf > folder > note. YAML frontmatter is parsed and stored as memory attributes.

MCP Protocol

MCP is the primary interface for AI agents to interact with Memorius. Connect any MCP-compatible client by pointing it at the MCP server:

{
  "mcpServers": {
    "memorius": {
      "command": "memorius",
      "args": ["serve"]
    }
  }
}

Available MCP tools (22 tools):

Tool	Description
memorius_status	Memory vault status
memorius_store	Store content in vault/shelf/folder/note hierarchy (with ttl_days)
memorius_search	Semantic search (expand_graph, rerank, tags, cursor pagination)
memorius_get	Get a single memory by UUID
memorius_update	Update memory content/metadata (re-embeds on change)
memorius_delete	Delete a memory by ID
memorius_list	List memories with cursor pagination
memorius_mine	Extract memories from conversation transcript
memorius_extract	LLM-powered structured memory extraction
memorius_diary_write	Write session diary entry
memorius_diary_list	List diary entries
memorius_vault_ls	Browse vault hierarchy
memorius_consolidate	Merge duplicate memories, extract insights
memorius_factcheck	Fact-check a statement against stored memories
memorius_context	Get formatted memory context for injection
memorius_session_profile	Build session memory profile for inheritance
memorius_contradictions	Get memories that contradict a given memory ID
memorius_graph_stats	Knowledge graph statistics (nodes, edges, relations)
memorius_memory_stats	Memory tracking statistics (total, active, archived, by vault)
memorius_prune	Find stale memories by decay score, archive or delete
memorius_doctor	Run health checks (config, storage, vector store, graph)

REST API

The REST server is always available (no extra install flags needed):

memorius serve-rest

Starts a FastAPI server on http://127.0.0.1:8912 by default.

Security

• API key auth: Set MEMORIUS_API_KEY env var; send as Authorization: Bearer <key>
• Rate limiting: 500 requests/min per IP
• Request body limit: Maximum body size enforced
• CORS: Restrictive by default (Obsidian app + localhost only)
• Daemon mode: --daemon / --stop with PID file management

Endpoints

Method	Path	Description
GET	/health	Health check
GET	/status	System status
GET	/stats	Full vault + memory + graph stats
GET	/doctor	Health checks
GET	/vault	Browse vault hierarchy
GET	/diaries	List recent diary entries
GET	/memory/{memory_id}	Get single memory by UUID
GET	/contradictions/{memory_id}	Get contradicting memories
GET	/memories	List memories with cursor pagination
GET	/obsidian	List notes in Obsidian vault
POST	/store	Store a memory
POST	/search	Semantic search
POST	/mine	Extract memories from transcript
POST	/diary	Write diary entry
POST	/consolidate	Merge duplicate memories (requires confirm=true)
POST	/extract	Extract memories from conversation (LLM)
POST	/factcheck	Fact-check statement against vault
POST	/context	Get formatted memory context for injection
POST	/prune	Find and archive stale memories
POST	/obsidian/import	Import Obsidian notes as memories
POST	/obsidian/export	Export memories as Obsidian notes
PATCH	/memory/{memory_id}	Update memory content/metadata
DELETE	/memory/{memory_id}	Delete a memory

Agent Skill Installation

Memorius ships with a ready-to-use agent skill (skills/memorius/SKILL.md) for agents that support the Hermes Agent skill format. The skill provides auto-capture rules, smart context injection, session diary templates, and workflow patterns — so agents can use memorius proactively without being told.

Skill Structure

skills/
  memorius/
    SKILL.md              # Full skill definition (auto-capture, context injection, diary rules)
    README.md             # Quick command reference
    .memorius_version     # Version tracker

Installing for Hermes Agent

The skill is designed for Hermes Agent — copy it into your Hermes skills directory:

# Copy the skill
cp -r skills/memorius ~/.hermes/skills/

# Verify it's loaded
hermes skills list | grep memorius

Once installed, Hermes will automatically detect it and follow the skill's workflows.

Installing for Other Agents

Agents that don't use the Hermes skill format can still use memorius via MCP or CLI:

Agent	Install Command
Claude Code	claude mcp add memorius -- memorius serve
Codex CLI	codex mcp add memorius -- memorius serve
Gemini CLI	gemini mcp add memorius $(which memorius) serve
Cursor	Add to .cursor/mcp.json: {"mcpServers": {"memorius": {"command": "memorius", "args": ["serve"]}}}
Aider	aider --mcp-servers memorius=memorius serve
Continue	Add memorius to .continue/config.json MCP servers
OpenClaw	openclaw mcp set memorius '{"command":"memorius","args":["serve"]}'

See manifest.yaml for the full list of supported agents and their install commands.

Copying the SKILL.md file directly may also work for agents with their own skills directory (e.g. ~/.claude/skills/, ~/.codex/skills/) — check your agent's documentation.

Agent Hooks

Memorius includes universal agent lifecycle hooks — auto-detecting, agent-agnostic, and framework-free. Hook scripts are generated per agent:

memorius-plugin-gen init
# Edit universal-manifest.yaml
memorius-plugin-gen generate

Supported agents (8 adapters)

Agent	Hook protocol	Events
OpenClaude	OpenClaude marker in payload	stop, precompact, session_start
Claude Code (Anthropic)	stop_hook_active / precompact	stop, precompact, session_start
Codex CLI (OpenAI)	session_id + context_dir	session_start, session_stop, stop, precompact
Gemini CLI (Google)	conversation_id + extensions	stop, session_start
OpenClaw	openclaw marker in payload	stop, session_stop, precompact, session_start
OpenCode (anomalyco/sst)	provider dict + openCodeVersion	stop, session_stop, session_start, precompact
Pi (kachow-compatible)	event in Pi event set	session_start, session_shutdown, pre_compact, tool_call, turn_end
Generic	Fallback for unrecognized payloads	Any

Hook engine actions (10 types)

Action	Description
mine_dir	Read transcript file(s) and mine via VaultEngine
diary	Write a diary entry
conditional_diary	Write diary only after N exchanges (interval-based)
command	Execute a shell command (sanitized via shlex)
log	Log a message
webhook	POST event payload to a URL (with SSRF protection)
inject_context	Inject relevant memories into context
consolidate	Run memory consolidation
factcheck	Fact-check a statement from event payload
(allow/block)	Engine can return block to pause agent execution

Auto-detection (no config needed)

Hooks are auto-detected from stdin — no --agent flag required. Just pipe agent hook JSON to the memorius hook engine and it figures out which agent sent the event:

# Hook engine auto-detects the agent
cat hook-payload.json | memorius-hook mine
cat hook-payload.json | memorius-hook diary

You can also force a specific agent with --agent:

memorius-hook mine --agent claude-code
memorius-hook diary --agent opencode

Detection priority (most-specific first): OpenClaude → Claude Code → Codex → Gemini CLI → OpenClaw → OpenCode → Pi → Generic

Hook CLI commands:

memorius-hook run              Process a hook event from stdin
memorius-hook init-config      Generate default ~/.memorius/hooks.yaml
memorius-hook status           Show hook state summary

Plugin Generator

memorius-plugin-gen list          # Show supported agents
memorius-plugin-gen init          # Create universal-manifest.yaml
memorius-plugin-gen generate      # Generate plugins for all agents
memorius-plugin-gen generate --watch  # Live regeneration on config change

Generates plugins for: Claude Code, Codex CLI, Cursor, OpenClaw, and marketplace. Outputs: plugin.json, hooks.json, hook shell scripts, skill cards, commands, marketplace.json, README.

Conversation Normalizers

memorius-normalize detect <files>           # Auto-detect format
memorius-normalize convert <file>           # Convert to transcript
memorius-normalize batch <dir>              # Batch convert directory
memorius-normalize pipe                     # Read stdin, write stdout

Format	Description
discord	Discord channel export JSON (DiscordChatExporter)
telegram	Telegram Desktop chat export JSON
whatsapp	WhatsApp plain text export (international + US/EU variants)
generic-json	Any JSON with {role, content}, {author, text}, or {from, text}
generic-messages	List of message objects with role/author fields
generic-chat	Dict with conversations/chats key
generic-text	Plain text with speaker: message pairs or > transcript markers

Context Injection

Formatted memory blocks for agent system prompts:

# Full formatted block with category, vault, confidence, source
format_memory_block(memory)

# Compact format for system prompts
format_for_system_prompt(memories)

# Combines recent diaries + topic search for session continuity
inject_for_session(query, vault)

Includes prompt injection protection — sanitizes memory content before LLM injection (strips "ignore previous instructions", XML tags, control characters).

Session Memory Inheritance

memorius profile <session>    Build session memory profile

Builds a session profile analyzing recent diaries, memories, and access patterns. Enables cross-session continuity with: summary, key_decisions, ongoing_tasks, recent_topics, context_memories.

Health Checks

memorius doctor

Runs 6 checks: config parseable, storage writable, ONNX model present, vector/meta count drift, collection name length, graph health. Returns structured report with ok/warn/fail/skip per check. Uses SQLiteStore public API for metadata queries.

Validation

All inputs are validated for security and correctness:

• Names: ^[a-zA-Z0-9_\-]+$, max 1000 chars
• Memory IDs: Must be valid UUID (prevents path traversal)
• Content: Max 100KB
• Search limit: Max 100 results
• Diary content: Max 50KB
• Request body: Size limit middleware on REST server

Thread Safety

• Thread-local SQLite connections
• threading.Lock() for all meta store writes
• threading.Lock() for sqlite-vec store
• atexit handler to close connections

Security

Hook Engine

• Template injection prevention: strips shell metacharacters
• Command execution: shlex.split() with shell=False (no shell injection)
• Webhook SSRF protection: blocks localhost, private IPs, metadata endpoints, non-HTTP schemes

REST Server

• API key auth via MEMORIUS_API_KEY (Bearer token)
• Rate limiting: 500 req/min per IP
• CORS: restrictive by default (Obsidian app + localhost only)
• Path traversal detection on Obsidian export

Optional Dependencies

pip install memorius[local-embeddings]  # sentence-transformers
pip install memorius[openai]            # openai SDK
pip install memorius[ranker]            # cross-encoder reranker
pip install memorius[single-file]       # sqlite-vec backend
pip install memorius[all]               # everything above
pip install memorius[dev]               # pytest + pytest-asyncio

Installed CLI Entry Points

Command	Entry Point
memorius	Core CLI (init, store, search, mine, etc.)
memorius-hook	Agent hook engine (run, init-config, status)
memorius-plugin-gen	Plugin generator (list, init, generate)
memorius-normalize	Conversation normalizer (detect, convert, batch, pipe)

Development

git clone https://github.com/Dream-Pixels-Forge/memorius.git
cd memorius
python3 -m venv .venv
source .venv/bin/activate
pip install -e ".[dev]"

# Run tests
pytest

# Run specific test modules
pytest tests/test_domain_modules.py -v  # SearchModule + StoreModule tests
pytest tests/test_core.py -v            # Core vault tests

# Run end-to-end
memorius init
memorius store "test memory"
memorius search "test"
memorius serve-rest         # REST server available out of the box

Test Structure

Test File	Coverage
test_domain_modules.py	SearchModule (7 tests) + StoreModule (19 tests)
test_core.py	Core vault operations, config, embeddings
test_feature_*.py	Feature-specific tests (backup, batch, consolidation, etc.)
test_regression_*.py	Regression tests for specific bugs

License

MIT