ZenLink MCP

MCP server for browser automation via ZenLink — gives Claude Desktop and other MCP clients native browser control through Zen Browser (Firefox-based).

v2.0.0 ships ~50 new tools for parallel agentic work: real multi-tab parallelism, tab unloader defense, session save/restore, Readability + Markdown extraction, request interception, cookies/storage, and orchestration primitives (broadcast, sync barriers, tab pools, named tags). See CHANGELOG.md for the full list.

Installation

pip install zenlink-mcp

Requirements

• ZenLink browser extension v2.0.0+ installed in Zen Browser
• ZenLink bridge running (python native/bridge.py)

Tool surface (75+ tools)

Every tab-aware tool below accepts an optional tab_id parameter — pass it to drive a specific tab without stealing focus, the foundation for parallel multi-tab work.

Core

zen_status, zen_health, zen_tabs, zen_new_tab, zen_close_tab, zen_switch_tab, zen_navigate, zen_screenshot

Content extraction (read once, work cheaply)

zen_page_text, zen_page_info, zen_readability, zen_markdown, zen_query, zen_html, zen_links, zen_images, zen_meta, zen_structured_data, zen_bounds, zen_computed_style, zen_dom, zen_forms, zen_iframes, zen_explain_selector, zen_full_page_metrics

Interaction

zen_click, zen_trusted_click, zen_double_click, zen_type, zen_fill, zen_form_fill, zen_set_editable_content, zen_select_option, zen_check, zen_focus, zen_blur, zen_keypress, zen_submit_form, zen_drag, zen_hover, zen_scroll, zen_find, zen_highlight, zen_click_and_wait_navigation

Visual

zen_screenshot, zen_element_screenshot, zen_full_page_screenshot

Tab and window management

zen_pin_tab, zen_mute_tab, zen_duplicate_tab, zen_reload_tab, zen_back, zen_forward, zen_get_zoom, zen_set_zoom, zen_windows, zen_create_window, zen_close_window, zen_focus_window, zen_move_tab, zen_detach_tab

Network, cookies, state

zen_cookies, zen_storage (local/session), zen_clipboard, zen_downloads, zen_clear_browsing_data, zen_intercept, zen_capture_network, zen_wait_for_network_idle, zen_wait_for_url, zen_wait_for_title, zen_watch_console, zen_console_logs

Sessions (auth-once-use-many)

zen_save_session, zen_load_session, zen_list_sessions, zen_delete_session

Orchestration (parallel multi-tab)

zen_keep_alive, zen_keep_alive_stop, zen_wake_tab, zen_broadcast, zen_sync_barrier, zen_tag_tab, zen_resolve_tag, zen_list_tags, zen_untag_tab, zen_tab_pool, zen_pool_acquire, zen_pool_release, zen_parallel

Batch / scripting

zen_batch (with parallel, if, while, try, sequence, retry, ${$N.field} variable substitution)

Observability / policy

zen_logs, zen_audit, zen_set_policy, zen_get_policy, zen_retry, zen_reload_extension

Wait primitives

zen_wait_for_element, zen_wait_for_result, zen_wait_for_url, zen_wait_for_title, zen_wait_for_network_idle

Workflow

zen_workflows, zen_workflow, zen_cache, zen_wp_html

zen_wait_for_element

Waits for a CSS selector to appear and become visible on the page. Returns immediately when found rather than sleeping a fixed duration — use this instead of sleep when waiting for dynamic/JS-rendered content.

{"action": "waitForElement", "selector": ".tracking-events", "timeout": 10000}

Parameter	Type	Default	Description
selector	string	required	CSS selector to wait for
timeout	int	10000	Max wait time in milliseconds
poll_interval	int	200	How often to check in milliseconds

Returns { ok: true, found: true, elapsed: 342, ref: "r12", tag: "div" } on success, or { ok: false, found: false, error: "Timed out after 10000ms" } on timeout.

zen_batch

Run multiple commands in one request. Supports all actions including waitForElement, trustedClick, and sleep:

[
  {"action": "navigate", "url": "https://example.com"},
  {"action": "waitForElement", "selector": ".results", "timeout": 8000},
  {"action": "pageText"}
]

Claude Desktop Setup

Add to your claude_desktop_config.json:

{
  "mcpServers": {
    "zenlink": {
      "command": "zenlink-mcp"
    }
  }
}

Changelog

See CHANGELOG.md for the full history. Highlights of v2.0.0:

• ~50 new MCP tools across content extraction, interaction, network, sessions, orchestration
• Real parallel multi-tab work via zen_parallel + zen_keep_alive
• Session save/restore for auth-once-use-many flows
• `zen_intercept$ \text{to} \text{block} \text{analytics}/\text{ads} (3–10 \times \text{page} \text{speedup} \text{in} \text{agent} \text{runs})
• $zen_readability+zen_markdown` for token-efficient page extraction
• Hot reload via zen_reload_extension

Links

• ZenLink Bridge & Extension
• MCP Registry

_{mcp-name: io.github.JayQuan-McCleary/zenlink-mcp}