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Give your AI coding assistant a memory — Cross-session persistent memory MCP Server

Still using CLAUDE.md / MEMORY.md as memory? This Markdown-file memory approach has fatal flaws: the file keeps growing, injecting everything into every session and burning massive tokens; content only supports keyword matching — search "database timeout" and you won't find "MySQL connection pool pitfall"; sharing one file across projects causes cross-contamination; there's no task tracking, so dev progress lives entirely in your head; not to mention the 200-line truncation, manual maintenance, and inability to deduplicate or merge.

AIVectorMemory is a fundamentally different approach. Local vector database storage with semantic search for precise recall (matches even when wording differs), on-demand retrieval that loads only relevant memories (token usage drops 50%+), automatic multi-project isolation with zero interference, and built-in issue tracking + task management that lets AI fully automate your dev workflow. All data is permanently stored on your machine — zero cloud dependency, never lost when switching sessions or IDEs.

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Project Selection

Overview & Vector Network

┌─────────────────────────────────────────────────┐
│                   AI IDE                         │
│  OpenCode / Codex / Claude Code / Cursor / ...  │
└──────────────────────┬──────────────────────────┘
                       │ MCP Protocol (stdio)
┌──────────────────────▼──────────────────────────┐
│              AIVectorMemory Server               │
│                                                  │
│  ┌──────────┐ ┌──────────┐ ┌──────────────────┐ │
│  │ remember │ │  recall   │ │   auto_save      │ │
│  │ forget   │ │  task     │ │   status/track   │ │
│  └────┬─────┘ └────┬─────┘ └───────┬──────────┘ │
│       │            │               │             │
│  ┌────▼────────────▼───────────────▼──────────┐  │
│  │         Embedding Engine (ONNX)            │  │
│  │      intfloat/multilingual-e5-small        │  │
│  └────────────────────┬───────────────────────┘  │
│                       │                          │
│  ┌────────────────────▼───────────────────────┐  │
│  │     SQLite + sqlite-vec (Vector Index)     │  │
│  │     ~/.aivectormemory/memory.db            │  │
│  └────────────────────────────────────────────┘  │
└──────────────────────────────────────────────────┘

# Install
pip install aivectormemory

# Upgrade to latest version
pip install --upgrade aivectormemory

# Navigate to your project directory, one-click IDE setup
cd /path/to/your/project
run install

run install interactively guides you to select your IDE, auto-generating MCP config, Steering rules, and Hooks — no manual setup needed.

macOS users note:

• If you get externally-managed-environment error, add --break-system-packages
• If you get enable_load_extension error, your Python doesn't support SQLite extension loading (macOS built-in Python and python.org installers don't support it). Use Homebrew Python instead:

  brew install python
  /opt/homebrew/bin/python3 -m pip install aivectormemory

No pip install needed, run directly:

cd /path/to/your/project
uvx aivectormemory install

Requires uv to be installed. uvx auto-downloads and runs the package — no manual installation needed.

{
  "mcpServers": {
    "aivectormemory": {
      "command": "run",
      "args": ["--project-dir", "/path/to/your/project"]
    }
  }
}

For Codex, use project-scoped TOML instead of JSON:

[mcp_servers.aivectormemory]
command = "run"
args = ["--project-dir", "/path/to/your/project"]

Codex only loads project-scoped .codex/config.toml after the repository is marked as a trusted project.

content (string, required)   Memory content in Markdown format
tags    (string[], required)  Tags, e.g. ["pitfall", "python"]
scope   (string)              "project" (default) / "user" (cross-project)

Similarity > 0.95 auto-updates existing memory, no duplicates.

query   (string)     Semantic search keywords
tags    (string[])   Exact tag filter
scope   (string)     "project" / "user" / "all"
top_k   (integer)    Number of results, default 5

Vector similarity matching — finds related memories even with different wording.

memory_id  (string)     Single ID
memory_ids (string[])   Batch IDs

state (object, optional)   Omit to read, pass to update
  is_blocked, block_reason, current_task,
  next_step, progress[], recent_changes[], pending[]

Maintains work progress across sessions, auto-restores context in new sessions.

action   (string)   "create" / "update" / "archive" / "list"
title    (string)   Issue title
issue_id (integer)  Issue ID
status   (string)   "pending" / "in_progress" / "completed"
content  (string)   Investigation content

action     (string, required)  "batch_create" / "update" / "list" / "delete" / "archive"
feature_id (string)            Linked feature identifier (required for list)
tasks      (array)             Task list (batch_create, supports subtasks)
task_id    (integer)           Task ID (update)
status     (string)            "pending" / "in_progress" / "completed" / "skipped"

Links to spec docs via feature_id. Update auto-syncs tasks.md checkboxes and linked issue status.

action   (string)    "generate" (default) / "diff" (compare differences)
lang     (string)    Language: en / zh-TW / ja / de / fr / es
sections (string[])  Specify sections: header / tools / deps

Auto-generates README content from TOOL_DEFINITIONS / pyproject.toml, multi-language support.

preferences  (string[])  User-expressed technical preferences (fixed scope=user, cross-project)
extra_tags   (string[])  Additional tags

Auto-extracts and stores user preferences at end of each conversation, smart dedup.

run web --port 9080
run web --port 9080 --quiet          # Suppress request logs
run web --port 9080 --quiet --daemon  # Run in background (macOS/Linux)

Visit http://localhost:9080 in your browser. Default username admin, password admin123 (can be changed in settings after first login).

• Multi-project switching, memory browse/search/edit/delete/export/import
• Semantic search (vector similarity matching)
• One-click project data deletion
• Session status, issue tracking
• Tag management (rename, merge, batch delete)
• Token authentication protection
• 3D vector memory network visualization
• 🌐 Multi-language support (简体中文 / 繁體中文 / English / Español / Deutsch / Français / 日本語)

    
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AIVectorMemory is the storage layer. Use Steering rules to tell AI when and how to call these tools.

Running run install auto-generates Steering rules and Hooks config — no manual setup needed.

# AIVectorMemory - Workflow Rules

## 1. New Session Startup (execute in order)

1. `recall` (tags: ["project-knowledge"], scope: "project", top_k: 100) load project knowledge
2. `recall` (tags: ["preference"], scope: "user", top_k: 20) load user preferences
3. `status` (no state param) read session state
4. Blocked → report and wait; Not blocked → enter processing flow

## 2. Message Processing Flow

- Step A: `status` read state, wait if blocked
- Step B: Classify message type (chat/correction/preference/code issue)
- Step C: `track create` record issue
- Step D: Investigate (`recall` pitfalls + read code + find root cause)
- Step E: Present plan to user, set blocked awaiting confirmation
- Step F: Modify code (`recall` pitfalls before changes)
- Step G: Run tests to verify
- Step H: Set blocked awaiting user verification
- Step I: User confirms → `track archive` + clear block

## 3. Blocking Rules

Must `status({ is_blocked: true })` when proposing plans or awaiting verification.
Only clear after explicit user confirmation. Never self-clear.

## 4-9. Issue Tracking / Code Checks / Spec Task Mgmt / Memory Quality / Tool Reference / Dev Standards

(Full rules auto-generated by `run install`)

{
  "enabled": true,
  "name": "Dev Workflow Check",
  "version": "1",
  "when": { "type": "promptSubmit" },
  "then": {
    "type": "askAgent",
    "prompt": "Core principles: verify before acting, no blind testing, only mark done after tests pass"
  }
}

The embedding model (~200MB) is auto-downloaded on first run. If slow:

export HF_ENDPOINT=https://hf-mirror.com

Or add env to MCP config:

{
  "env": { "HF_ENDPOINT": "https://hf-mirror.com" }
}

Enhancement: Rule System Overhaul + OpenClaw Support

• 🧠 Fixed 5 missing memory system calls in AI rules: recall pitfalls before investigation (Step D), before dangerous ops (§7), before Spec writing (§8), before subtask execution (§8), and remember pitfalls after fix (Step I)
• 🦞 Added OpenClaw IDE support — now 11 IDEs total (MCP config merges into ~/.openclaw/openclaw.json, steering appends to AGENTS.md)
• 🎭 Playwright self-test rules strengthened — added ToolSearch deferred tools loading requirement, banned open command workaround
• 🔧 Merged v2.2.0–v2.2.6 features: hooks system (bash_guard + stop_guard + check_track), scoring engine improvements, recall optimizations, web dashboard bulk delete, desktop memory delete modal
• ⚠️ DEV_WORKFLOW_PROMPT: added 2 new violation reminders (recall before code change, remember after fix)
• 🌐 All 7 language rule files updated in sync

Enhancement: AI Rule System Upgrade

• 📋 CLAUDE.md completion: added Identity & Tone (§1), 7 Core Principles (§3), message type judgment examples, expanded IDE safety and self-test sections
• ⚠️ Hook added Common Violations Reminder: ❌ negative examples reinforcing the 4 most frequently missed rules (self-test, recall, track create, IDE safety)
• 🌐 All 7 language rule files updated in sync (zh-CN/zh-TW/en/ja/es/de/fr)
• 🔢 CLAUDE.md sections renumbered to §1–§11, cross-references updated accordingly

New: Smart Memory Engine + Uninstall

• 🧠 FTS5 full-text search with Chinese tokenization (jieba) — keyword search now actually works for CJK content
• 🔀 Hybrid retrieval: vector + FTS5 dual-path with RRF (Reciprocal Rank Fusion) merging
• 📊 Composite scoring: results ranked by similarity × 0.5 + recency × 0.3 + frequency × 0.2, weighted by importance
• ⚡ Conflict detection: similar memories (0.85–0.95) auto-superseded, old facts fade automatically
• 📦 Memory tiers: frequently accessed memories auto-promote to long_term and get searched first
• 🗑️ Auto-archive: stale short_term memories (90 days inactive + low importance) cleaned up automatically
• 🔗 Relation expansion: tag overlap ≥ 2 builds related links, 1-hop expansion surfaces connected memories
• 📝 Auto-summary: long memories (>500 chars) get summaries, brief mode returns summaries to save tokens
• 🧹 Code cleanup: removed 15 dead code items, refactored 7 duplicate patterns into shared utilities
• ❌ run uninstall — cleanly removes all IDE configurations (MCP, steering, hooks, permissions) while preserving memory data

Enhancement: Security & Rule Optimization

• 🔒 Fixed SQL injection, command injection, and path traversal vulnerabilities
• 🛡️ Added transaction protection for data integrity (archive, insert, update operations)
• 🧠 Unified similarity formula across all search paths
• 📏 Compressed AI workflow rules by 38% (219→136 lines) with zero process removal
• 🧹 v12 migration cleans up legacy garbage memories automatically
• 🌐 All 7 languages synchronized

New: Playwright Browser Testing Built-in

• 🎭 run install now automatically configures Playwright browser testing — AI can open a real browser to verify frontend changes instead of guessing
• 🎭 Uses a dedicated test browser (Chrome for Testing) that won't interfere with your personal browser tabs
• 🔑 Simplified permission setup — no more manual permission popups for common tools
• 📏 Updated AI rules across all 7 languages to enforce proper browser testing behavior

Enhancement: More IDE Support

• 🖥️ Added support for Antigravity and GitHub Copilot IDEs
• 🔑 run install now auto-configures tool permissions, reducing manual setup
• 📏 Streamlined AI self-testing rules

Enhancement: Faster Startup

• ⚡ Optimized memory loading on session start — loads faster with less context usage
• 🔑 Auto-configures Claude Code permissions during installation
• 🌐 All 7 languages synchronized

Enhancement: Simpler Rules

• 📏 AI workflow rules restructured for clarity and reduced token usage
• 💾 AI now automatically saves your preferences at the end of each session
• 🌐 All 7 languages synchronized

Fix: Tool Reliability

• 🔧 Comprehensive audit and fix of all MCP tool parameters — improved reliability across all IDEs

Enhancement: Better Search & Safety

• 🔍 Memory search now combines semantic and keyword matching for more accurate recall
• 🛡️ Added cross-project protection — AI won't accidentally modify files in other projects

Enhancement: Rule Generalization & Desktop Version Fix

• 📏 Added "recall before asking user" rule — AI must query memory system before asking user for project information (server address, passwords, deploy config, etc.)
• 📏 Generalized pre-operation check rule — removed specific examples to apply to all operation scenarios
• 🖥️ Fixed desktop app settings page showing hardcoded version "1.0.0" instead of actual app version
• 🌐 All 7 language i18n steering rules and workflow prompts synchronized

Fix: Hook Cross-Project Compatibility

• 🔧 check_track.sh now derives project path from script location instead of $(pwd), fixing track detection failure when Claude Code runs hooks from non-root working directory
• 🔧 compact-recovery.sh now uses relative path derivation instead of hardcoded absolute paths, ensuring correct behavior when installed to any project
• 🔧 Removed redundant CLAUDE.md re-injection from compact-recovery (already auto-loaded by Claude Code)
• 🔧 install.py template synchronized with all hook fixes
• 🌐 All 7 language i18n compact-recovery hints updated

Performance: ONNX INT8 Quantization

• ⚡ Embedding model auto-quantized from FP32 to INT8 on first load, model file from 448MB down to 113MB
• ⚡ MCP Server memory usage reduced from ~1.6GB to ~768MB (50%+ reduction)
• ⚡ Quantization is transparent to users — automatic on first use, cached for subsequent loads, falls back to FP32 on failure

New: Remember Password

• 🔐 Login page on both desktop and web dashboard now has a "Remember password" checkbox
• 🔐 When checked, credentials are saved to localStorage and auto-filled on next login; when unchecked, saved credentials are cleared
• 🔐 Checkbox is hidden in registration mode

Enhancement: Steering Rules

• 📝 IDENTITY & TONE section strengthened with more specific constraints (no pleasantries, no translating user messages, etc.)
• 📝 Self-testing requirements now distinguish between backend-only, MCP Server, and frontend-visible changes (Playwright required for frontend)
• 📝 Development rules now mandate self-testing after completing development
• 📝 All 7 language versions synchronized

• 🐛 Desktop app version comparison switched to semantic versioning, fixing false upgrade prompts when local version is higher
• 🐛 Health check page field names aligned with backend, fixing consistency status always showing Mismatch
• 🔧 check_track.sh hook adds Python fallback, resolving silent hook failure when system sqlite3 is unavailable (#4)

• 🖥️ Desktop app one-click install + upgrade detection
• 🖥️ Auto-detect Python and aivectormemory installation status on startup
• 🖥️ Show one-click install button when not installed, check PyPI and desktop new versions when installed
• 🐛 Installation detection switched to importlib.metadata.version() for accurate package version

• 🔧 Fix PyPI package size anomaly (sdist from 32MB down to 230KB), excluded accidentally packaged dev files

New: Native Desktop App

• 🖥️ Native desktop client supporting macOS (ARM64), Windows (x64), Linux (x64)
• 🖥️ Desktop app shares the same database as Web dashboard, fully feature-equivalent
• 🖥️ Dark/light theme switching, Glass frosted visual style
• 🖥️ Login auth, project selection, stats overview, memory management, issue tracking, task management, tag management, settings, data maintenance — full feature coverage
• 📦 Auto-published installers via GitHub Releases, download and use

New: CI/CD Auto Build

• 🔄 GitHub Actions auto-builds desktop installers for all 3 platforms
• 🔄 Push a tag to trigger the full compile, package, and release pipeline

Fixes

• 🐛 Windows platform compatibility fixes
• 🐛 sqlite-vec extension download URL fix

Optimization: Token Usage Reduction

• ⚡ Steering rules changed from per-message dynamic injection to static loading, reducing repeated token consumption
• ⚡ Greatest impact for Claude Code users — ~2K fewer tokens per message

New: Full-Stack i18n (7 Languages)

• 🌐 Web dashboard + desktop UI fully supports 7 languages: 简体中文 / 繁體中文 / English / Español / Deutsch / Français / 日本語
• 🌐 One-click language switch in settings page, takes effect immediately
• 🌐 MCP tool responses follow language setting, AI replies automatically use the corresponding language
• 🌐 Switching language auto-regenerates steering rules for all installed projects

New: Web Dashboard Settings Page

• ⚙️ Language switch, theme settings, system info display
• ⚙️ Database health check, repair, backup and other maintenance tools

Optimization: Memory Search

• 🔍 recall search supports OR/AND tag matching modes, fixing missed results with multi-tag searches
• 🔍 Semantic search + tag filter defaults to OR matching (broader), tags-only browsing keeps AND matching (more precise)

Apache-2.0