What Happens During the Auto-Import Cookies Process When Installing Agent Reach

During installation, Agent Reach executes agent-reach configure --from-browser chrome to extract authentication cookies from your local browser using the rookiepy or browser_cookie3 libraries, filters them against platform-specific rules, and persists them to ~/.agent-reach/config.yaml for immediate use with Twitter/X, XiaoHongShu, Bilibili, and Xueqiu.

Installing Agent Reach on a local machine with agent-reach install --env=auto triggers an automated cookie import sequence that eliminates manual authentication steps. This process extracts existing login sessions directly from Chrome, Firefox, Edge, Brave, or Opera, mapping them to the specific credential requirements of supported social platforms. Understanding this auto-import cookies process reveals how the tool achieves zero-configuration setup while maintaining secure credential storage.

CLI Entry Point and Command Invocation

The auto-import sequence begins when the installer calls the configure sub-command defined in agent_reach/cli.py. At lines 86–88, the CLI parses the --from-browser flag and routes execution to cookie_extract.configure_from_browser(browser, config) when a browser is specified.

This entry point handles user-facing arguments and delegates all extraction logic to the cookie management module. The function signature accepts a browser name string (e.g., "chrome") and a configuration object, establishing the bridge between the command-line interface and the underlying extraction engine.

Browser Extraction Engine

Actual cookie extraction occurs in agent_reach/cookie_extract.py, which implements a dual-library strategy for maximum compatibility. The module first attempts to import rookiepy, a Rust-based extractor offering superior reliability and speed. If rookiepy is unavailable, it falls back to the pure-Python browser_cookie3 library (lines 53–62).

Supported browsers include Chrome, Firefox, Edge, Brave, and Opera, validated at lines 70–73. If the specified browser is not in this list or is currently closed, the module raises a RuntimeError with specific guidance for the user.

The selected library returns a cookie jar—an iterable collection of objects exposing name, value, and domain attributes (lines 78–87). This standardized interface allows downstream logic to process cookies identically regardless of which extraction backend retrieved them.

Platform-Specific Cookie Matching

Once extracted, cookies are filtered against the PLATFORM_SPECS table defined at lines 13–39 of cookie_extract.py. This mapping defines the domain patterns and required cookie names for each supported platform:

• Twitter/X: Matches domains .x.com and .twitter.com, requiring auth_token and ct0 cookies
• Bilibili: Requires SESSDATA and bili_jct tokens
• XiaoHongShu: Captures full header strings when specific named cookies are absent
• Xueqiu: Supports both specific token extraction and full cookie string capture

The extractor iterates through the browser's cookie jar, comparing each domain against these platform specifications. For Twitter, Bilibili, and standard Xueqiu configurations, it extracts specific named cookies as key-value pairs. For platforms like XiaoHongShu, it concatenates all relevant cookies into a single header string formatted as name=value; name2=value2.

Data Transformation and Storage

The extraction process returns a structured Python dictionary matching this pattern:

{
    "twitter": {"auth_token": "...", "ct0": "..."},
    "xhs": {"cookie_string": "a=1; b=2; ..."},
    "bilibili": {"SESSDATA": "...", "bili_jct": "..."},
    "xueqiu": {"cookie_string": "..."},
}

Back in configure_from_browser (lines 51–74), the system persists each platform’s data to ~/.agent-reach/config.yaml using the config.set() method. The configuration file is created with file mode 600, ensuring only the owner can read the sensitive authentication tokens.

For Twitter specifically, the process includes legacy synchronization routines—_sync_xfetch_session and _sync_bird_env (lines 76–100)—which update environment files for the xfetch and bird CLI tools. Bilibili, XiaoHongShu, and Xueqiu entries are stored directly without additional synchronization steps.

Error Handling and User Feedback

The auto-import process includes robust error handling at multiple stages. If neither rookiepy nor browser_cookie3 is installed, the system emits a clear error message prompting the user to install one of these dependencies (lines 56–66).

After successful extraction, the function returns a list of (platform, success, message) tuples that the CLI renders into user-friendly status indicators. A successful Twitter extraction displays as:

🟢 Twitter/X – auth_token + ct0

While missing credentials generate explicit warnings indicating which specific cookies could not be found in the browser store.

Summary

• Entry Point: The --from-browser flag in agent_reach/cli.py (lines 86–88) delegates to configure_from_browser() to initiate extraction.
• Extraction Logic: agent_reach/cookie_extract.py prefers rookiepy over browser_cookie3 to read Chrome, Firefox, Edge, Brave, or Opera cookie stores.
• Platform Mapping: The PLATFORM_SPECS table (lines 13–39) filters cookies by domain and name for Twitter/X, XiaoHongShu, Bilibili, and Xueqiu.
• Secure Storage: Valid credentials are written to ~/.agent-reach/config.yaml with 600 file permissions; Twitter additionally syncs legacy xfetch and bird environments.
• Fallback Support: Manual configuration via agent-reach configure <platform>-cookies "<string>" is available when auto-import fails or runs on headless servers.

Frequently Asked Questions

Which browsers support auto-import during Agent Reach installation?

Agent Reach supports Chrome, Firefox, Edge, Brave, and Opera for automatic cookie extraction. The system validates your selection against this list in agent_reach/cookie_extract.py (lines 70–73) and raises a RuntimeError if you specify an unsupported browser or if the browser is not currently running.

What happens if rookiepy is not installed on my system?

If the Rust-based rookiepy library is unavailable, the cookie extractor automatically falls back to the Python-native browser_cookie3 library (lines 53–62). You only need one of these packages installed for auto-import to function. If neither is present, the CLI provides a specific error message directing you to install either rookiepy or browser-cookie3.

How does Agent Reach secure the imported cookies?

Extracted cookies are stored in ~/.agent-reach/config.yaml with file mode 600, meaning only the file owner has read and write permissions. This prevents other system users from accessing your authentication tokens. The configuration is written atomically through the config.set() method to avoid corruption during the write process.

Can I manually configure cookies if the auto-import process fails?

Yes, if auto-import fails—such as when installing on a headless server or when cookies are in a non-standard location—you can manually provide credentials. Use the platform-specific command structure, such as agent-reach configure twitter-cookies "auth_token=AAA; ct0=BBB" for Twitter/X, or the equivalent header string for XiaoHongShu and Xueqiu.

{
  "mcpServers": {
    "instagit": {
      "command": "npx",
      "args": ["-y", "instagit@latest"]
    }
  }
}