e64006bafe
A CLI tool to query local WeChat data with 11 commands: sessions, history, search, contacts, members, stats, export, favorites, unread, new-messages, and init. Features: - Self-contained init with key extraction (no external deps) - On-the-fly SQLCipher decryption with caching - JSON output by default for LLM/AI tool integration - Message type filtering and chat statistics - Markdown/txt export for conversations - Cross-platform: macOS, Windows, Linux
235 lines
6.6 KiB
Markdown
235 lines
6.6 KiB
Markdown
# WeChat CLI
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[中文文档](README_CN.md)
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A command-line tool to query your local WeChat data — chat history, contacts, sessions, favorites, and more. Designed for LLM integration with JSON output by default.
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## Features
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- **Self-contained** — `pip install` + `wechat-cli init`, no external dependencies
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- **11 commands** — sessions, history, search, contacts, members, stats, export, favorites, unread, new-messages, init
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- **JSON by default** — structured output for programmatic access
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- **Cross-platform** — macOS, Windows, Linux
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- **On-the-fly decryption** — SQLCipher databases decrypted transparently with caching
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- **Message type filtering** — filter by text, image, link, file, video, etc.
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- **Chat statistics** — top senders, type breakdown, hourly activity distribution
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- **Markdown export** — export conversations as markdown or plain text
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## Quick Start
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### Install
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```bash
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pip install wechat-cli
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```
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Or install from source:
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```bash
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git clone https://github.com/canghe/wechat-cli.git
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cd wechat-cli
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pip install -e .
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```
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### Initialize
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Make sure WeChat is running, then:
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```bash
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# macOS/Linux: may need sudo for memory scanning
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sudo wechat-cli init
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# Windows: run in a terminal with sufficient privileges
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wechat-cli init
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```
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This will:
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1. Auto-detect your WeChat data directory
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2. Extract encryption keys from WeChat process memory
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3. Save config and keys to `~/.wechat-cli/`
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That's it — you're ready to go.
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## Commands
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### sessions — Recent Chats
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```bash
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wechat-cli sessions # Last 20 sessions (JSON)
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wechat-cli sessions --limit 10 # Last 10
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wechat-cli sessions --format text # Human-readable
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```
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### history — Chat Messages
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```bash
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wechat-cli history "Alice" # Last 50 messages
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wechat-cli history "Alice" --limit 100 --offset 50
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wechat-cli history "Team" --start-time "2026-04-01" --end-time "2026-04-03"
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wechat-cli history "Alice" --type link # Only links/files
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wechat-cli history "Alice" --format text
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```
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**Options:** `--limit`, `--offset`, `--start-time`, `--end-time`, `--type`, `--format`
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### search — Search Messages
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```bash
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wechat-cli search "hello" # Global search
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wechat-cli search "hello" --chat "Alice" # In specific chat
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wechat-cli search "meeting" --chat "TeamA" --chat "TeamB" # Multiple chats
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wechat-cli search "report" --type file # Only files
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wechat-cli search "hello" --start-time "2026-04-01" --limit 50
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```
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**Options:** `--chat` (repeatable), `--start-time`, `--end-time`, `--limit`, `--offset`, `--type`, `--format`
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### contacts — Contact Search & Details
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```bash
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wechat-cli contacts --query "Li" # Search contacts
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wechat-cli contacts --detail "Alice" # View contact details
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wechat-cli contacts --detail "wxid_xxx" # By WeChat ID
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```
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Details include: nickname, remark, WeChat ID (alias), bio, avatar URL, account type.
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### members — Group Members
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```bash
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wechat-cli members "Team Group" # List all members (JSON)
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wechat-cli members "Team Group" --format text
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```
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Shows member list with display names and group owner.
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### stats — Chat Statistics
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```bash
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wechat-cli stats "Team Group"
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wechat-cli stats "Alice" --start-time "2026-04-01" --end-time "2026-04-03"
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wechat-cli stats "Team Group" --format text
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```
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Returns: total messages, type breakdown, top 10 senders, 24-hour activity distribution.
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### export — Export Conversations
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```bash
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wechat-cli export "Alice" --format markdown # To stdout
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wechat-cli export "Alice" --format txt --output chat.txt # To file
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wechat-cli export "Team" --start-time "2026-04-01" --limit 1000
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```
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**Options:** `--format markdown|txt`, `--output`, `--start-time`, `--end-time`, `--limit`
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### favorites — WeChat Bookmarks
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```bash
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wechat-cli favorites # Recent bookmarks
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wechat-cli favorites --type article # Articles only
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wechat-cli favorites --query "machine learning" # Search
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```
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**Types:** text, image, article, card, video
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### unread — Unread Sessions
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```bash
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wechat-cli unread # All unread sessions
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wechat-cli unread --limit 10 --format text
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```
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### new-messages — Incremental New Messages
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```bash
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wechat-cli new-messages # First call: return unread + save state
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wechat-cli new-messages # Subsequent: only new since last call
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```
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State persists at `~/.wechat-cli/last_check.json`. Delete it to reset.
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## Message Type Filter
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The `--type` option (available on `history` and `search`) accepts:
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| Value | Description |
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|-------|-------------|
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| `text` | Text messages |
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| `image` | Images |
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| `voice` | Voice messages |
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| `video` | Videos |
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| `sticker` | Stickers/emojis |
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| `location` | Location shares |
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| `link` | Links and app messages |
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| `file` | File attachments |
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| `call` | Voice/video calls |
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| `system` | System messages |
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## Use Cases
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### LLM / AI Tool Integration
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```bash
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# For Claude Code, Cursor, or any AI tool that can run shell commands
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wechat-cli sessions --limit 5
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wechat-cli history "Alice" --limit 20 --format text
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wechat-cli search "deadline" --chat "Team" --type text
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```
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All commands output JSON by default, making them ideal for AI agent tool calls.
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### Chat Analysis
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```bash
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# Who talks the most in a group?
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wechat-cli stats "Team Group" --format text
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# Find all shared links in a conversation
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wechat-cli history "Alice" --type link --limit 50
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# Search for a specific file
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wechat-cli search "report.xlsx" --type file
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```
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### Data Backup
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```bash
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# Export important conversations
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wechat-cli export "Team Group" --format markdown --output team_chat.md
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wechat-cli export "Alice" --start-time "2026-01-01" --format txt --output alice_2026.txt
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```
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### Notification Monitoring
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```bash
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# Cron job to check for new messages every 5 minutes
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*/5 * * * * wechat-cli new-messages --format text
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```
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## Platform Support
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| Platform | Status | Notes |
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| macOS (Apple Silicon) | Supported | Bundled arm64 binary for key extraction |
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| macOS (Intel) | Supported | x86_64 binary needed |
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| Windows | Supported | Reads Weixin.exe process memory |
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| Linux | Supported | Reads /proc/pid/mem, requires root |
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## How It Works
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WeChat stores chat data in SQLCipher-encrypted SQLite databases on your local machine. WeChat CLI:
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1. **Extracts keys** — scans WeChat process memory to find encryption keys (`wechat-cli init`)
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2. **Decrypts on-the-fly** — transparently decrypts databases with page-level AES-256-CBC + caching
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3. **Queries locally** — all data stays on your machine, no network access required
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## Requirements
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- Python >= 3.10
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- WeChat running locally (for `init` key extraction)
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## License
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[Apache License 2.0](LICENSE)
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