Agent Device (callstack) vs Playwright MCP
Two MCP servers from our browser automation ranking, compared on live data - updated nightly, never sponsored.
Bottom line · 2026-08-25
Playwright MCP records significantly more monthly package installs (25,988,876 vs 586,584); both are actively maintained, with commits inside the last month.
How they differ in kind
Agent Device (callstack) focuses on: Mobile app automation and verification for AI coding agents. Playwright MCP focuses on: A Model Context Protocol (MCP) server that provides browser automation capabilities using Playwright.
What each one does
Agent Device (callstack)
Mobile app automation and verification for AI coding agents. Give coding agents a live app feedback loop through a CLI, built-in MCP server, or typed Node.js API. It runs locally over stdio via the published package.
From the project's README.
Playwright MCP
A Model Context Protocol (MCP) server that provides browser automation capabilities using Playwright. This server enables LLMs to interact with web pages through structured accessibility snapshots, bypassing the need for screenshots or visually-tuned models. Its 16 documented tools cover browser, navigate, network. It runs locally over stdio via the published package.
From the project's README.
14 signals, side by side
| Signal | Agent Device (callstack) | Playwright MCP |
|---|---|---|
| Monthly installs | 586,584 | 25,988,876 |
| GitHub stars | 4,212 | 36,436 |
| Last commit | 2026-08-24 | 2026-08-21 |
| Releases · last 90 days | 10+ | 4 |
| In the registry since | Aug 2026 | May 2026 |
| Registry versions | 4 | 8 |
| Documented tools | not extracted - see README | 16 |
| Env vars extracted | none extracted - see README | none extracted - see README |
| Runs | local (stdio) | local (stdio) |
| Endpoint auth | local only | local only |
| Maintenance | actively maintained | actively maintained |
| License | MIT | Apache-2.0 |
| Language | TypeScript | TypeScript |
| Category rank | #3 of 196 | #1 of 196 |
What their tools cover
Extracted from each project's README - the tools each server hands your agent. A missing list means the README doesn't document one, not that no tools exist.
Agent Device (callstack) no tool list in README
Playwright MCP 16 tools documented
browser_click- Perform click on a web pagebrowser_close- Close the pagebrowser_console_messages- Returns all console messagesbrowser_drag- Perform drag and drop between two elementsbrowser_drop- Drop files or MIME-typed data onto an element, as if dragged from…browser_evaluate- Evaluate JavaScript expression on page or elementbrowser_file_upload- Upload one or multiple filesbrowser_fill_form- Fill multiple form fields
+8 more on the full page
In the wild
Public posts about Agent Device (callstack) or Playwright MCP. Linked sources - not MCPhq reviews or ratings.
-
@simonw · · Claude Code + real browser control · Playwright MCP
“Now Claude Code can use a Chrome browser directly! Here's my TIL: Using Playwright MCP with Claude Code.”
-
@debs_obrien · · Manual QA without reading source · Playwright MCP
“Manual Testing with AI - Used Playwright MCP + a simple prompt file to test my site. no source code. Navigated to the podcast page.”
-
@debs_obrien · · One-click VS Code install · Playwright MCP
“it is super easy to install the Playwright MCP with the new VS Code settings. No CLI, No JSON, just click install.”
Which one, for what
Derived from the signals above, not hands-on testing.
Pick Agent Device (callstack) if…
- → release velocity matters - 10+ releases in 90 days vs 4
- → category standing - #3 of 196 maintained browser automation servers
Pick Playwright MCP if…
- → you want the more widely installed option - 25,988,876 monthly installs vs 586,584
- → its documented toolset fits - 16 tools including browser_click, browser_close
Who's behind them
Agent Device (callstack) - callstack: 1 MCP server tracked, 1 maintained, 4,212 combined stars.
Playwright MCP - microsoft: 9 MCP servers tracked, 9 maintained, 43,350 combined stars. Full record.
Not sold on either?
The next-ranked browser automation servers we track:
Quick answers
Is Agent Device (callstack) better than Playwright MCP?
Package installs favor Playwright MCP: 25,988,876 monthly installs to 586,584. Agent Device (callstack) still ranks #3 of 196 maintained browser automation servers. Data as of 2026-08-25; we haven't hands-on tested either.
Can I use Agent Device (callstack) and Playwright MCP together?
Yes - MCP clients accept multiple servers in one config, so you can enable both browser automation servers side by side. If their tools overlap, keep the one whose toolset fits to keep your agent's tool list lean.
Keep exploring: best browser automation servers · TypeScript servers · all comparisons · every server
Methodology: package-usage signal = npm/PyPI installs (last month, platform APIs) · maintenance = commit recency + release cadence (GitHub) · tool lists and environment-variable names extracted from each project's README · endpoint auth from our own nightly probes. We haven't hand-tested these servers; everything here is data as of 2026-08-25.