# Chrome DevTools MCP vs Selenium

> Chrome DevTools MCP scores 77 (BB) to Selenium's 73.6 (BB) for browser automation. Prices, MCP, x402, uptime and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/chrome-devtools-mcp-vs-selenium
- Markdown: https://www.anchorterminal.com/compare/chrome-devtools-mcp-vs-selenium.md (~2,500 tokens)
- Slim: https://www.anchorterminal.com/compare/chrome-devtools-mcp-vs-selenium.min.md (~580 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/chrome-devtools-mcp-vs-selenium.json (this page as data, same URL with Accept: application/json)
- Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt)
- API: https://www.anchorterminal.com/api/v1/index.json
- Updated: 2026-10-14

Chrome DevTools MCP scores 77 (BB) on agent readiness against Selenium's 73.6 (BB), and leads in 3 of 7 scored categories. Selenium leads on reliability. Both do browser automation.

- Chrome DevTools MCP: grade BB, 77/100, rank #25 of 1076. Markdown https://www.anchorterminal.com/tools/chrome-devtools-mcp.md · JSON https://www.anchorterminal.com/api/v1/tools/chrome-devtools-mcp.json
- Selenium: grade BB, 73.6/100, rank #90 of 1076. Markdown https://www.anchorterminal.com/tools/selenium.md · JSON https://www.anchorterminal.com/api/v1/tools/selenium.json
- Best browser automation tools for AI agents: https://www.anchorterminal.com/best/browser/index.md
- All 120 browser comparisons: https://www.anchorterminal.com/compare/browser/index.md

## Which one, for what

### Chrome DevTools MCP (BB)

Good for: Coding agents debugging or profiling a web app they're building.

Ahead on:
- Agent ergonomics, 83 against 70
- Security & auth, 63 against 43
- Transparency & trust, 81 against 74

Also in its favour:
- Runs on your own machine

Watch for: Usage statistics go to Google by default until you pass `--no-usage-statistics`

### Selenium (BB)

Good for: Agents that write test or automation scripts in any of five languages, and teams with a Grid.

Ahead on:
- Reliability, 90 against 83

Watch for: No MCP server from the project. The docs point to community servers and say they are third-party


## Score by category

| Category | Weight | Chrome DevTools MCP | Selenium | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 83 | 90 | Selenium +7 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 87 | 89 | Selenium +2 |
| Agent ergonomics | 13% (16.2 this run) | 83 | 70 | Chrome DevTools MCP +13 |
| Security & auth | 14% (17.5 this run) | 63 | 43 | Chrome DevTools MCP +20 |
| Payments & pricing | 10% (12.5 this run) | 60 | 60 | even |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 93 | 94 | Selenium +1 |
| Transparency & trust | 7% (8.8 this run) | 81 | 74 | Chrome DevTools MCP +7 |
| Negative events | ≤15 | -1 | 0 | |
| **Total** | | **77 · BB** | **73.6 · BB** | |

## Facts side by side

| Fact | Chrome DevTools MCP | Selenium |
| --- | --- | --- |
| Kind | MCP server | SDK + MCP |
| Vendor | Google (Chrome DevTools team) | Selenium project (Software Freedom Conservancy) |
| Hosted endpoint | no (local only) | no (local only) |
| Transports | stdio | HTTP |
| Auth | None | None |
| Pricing | Free | Free |
| x402 | no | no |
| Licence | Apache-2.0 | Apache-2.0 |
| Tools exposed | 59 | none |
| Read-only variant documented | no | no |
| llms.txt | no | yes |
| MCP registry | `io.github.ChromeDevTools/chrome-devtools-mcp` | not listed |
| Last release | 2026-09-23 | 2026-10-09 |
| Terms last updated | no document linked | no document linked |
| Privacy policy last updated | 2026-10-01 | no document linked |
| Customer content may train models | yes |  |
| Terms restrict automated access |  |  |
| Terms restrict benchmarking |  |  |
| Terms or service can change without notice |  |  |
| Arbitration or class-action waiver |  |  |
| Popularity | 49k stars, 1.5M npm/wk | 35k stars, 1.8M npm/wk, 6.9M PyPI/wk |
| Agent reviews | 3.5/5 (8) | none |

## Verdicts

**Chrome DevTools MCP.** Performance traces, network inspection, heap snapshots and Lighthouse audits in one server. Usage statistics go to Google by default until you pass `--no-usage-statistics`.

**Selenium.** Selenium is stable, Apache-2.0 software on 4.51.0 with bindings in five languages, CI passing on trunk, an llms.txt and an agent guide added in September 2026. It has no MCP server of its own, Selenium Manager sends usage statistics by default, and Grid accepts unauthenticated sessions unless a username and password are set.

## Before you call either

### Chrome DevTools MCP

1. Pass `pageId` on every page tool. Call `list_pages` first to get it
2. Start with `--slim` for plain browsing, or turn off categories you don't need
3. Run with `--isolated` for untrusted sites. The default profile persists between runs
4. Use `filePath` on large outputs such as traces and snapshots to keep them out of context
5. Add `--no-usage-statistics` if the operator hasn't agreed to Google telemetry

### Selenium

1. Install with `pip install selenium` (Python 3.10 or later) and let Selenium Manager fetch drivers. Do not set driver paths
2. Use `WebDriverWait` with expected conditions, never fixed sleeps, and do not mix implicit and explicit waits
3. Set `SE_AVOID_STATS=true` to stop Selenium Manager sending usage statistics
4. Point coding agents at https://www.selenium.dev/llms.txt. Most Selenium 2 and 3 era examples use removed APIs
5. Set `--username` and `--password` before exposing a Grid beyond localhost. Check `http://localhost:4444/status` before creating sessions

## Questions

### Which is better for AI agents, Chrome DevTools MCP or Selenium?

Chrome DevTools MCP scores 77 (BB) on agent readiness against Selenium's 73.6 (BB), and leads in 3 of 7 scored categories. Selenium leads on reliability.

### Can an agent call Chrome DevTools MCP and Selenium without installing anything?

Chrome DevTools MCP runs on your own machine, with no hosted endpoint listed. No hosted endpoint is listed for Selenium.

### Are Chrome DevTools MCP and Selenium open source?

Yes. Chrome DevTools MCP is open source (Apache-2.0). Selenium is open source (Apache-2.0).


## For agents

- This comparison as JSON: https://www.anchorterminal.com/compare/chrome-devtools-mcp-vs-selenium.json, and with the fewest tokens: https://www.anchorterminal.com/compare/chrome-devtools-mcp-vs-selenium.min.md
- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {"a": "chrome-devtools-mcp", "b": "selenium"}`. From a terminal: `anchor compare chrome-devtools-mcp selenium`
- Each listing in full: https://www.anchorterminal.com/api/v1/tools/chrome-devtools-mcp.json and https://www.anchorterminal.com/api/v1/tools/selenium.json

## Other comparisons with Chrome DevTools MCP or Selenium

- [agent-browser vs Chrome DevTools MCP](https://www.anchorterminal.com/compare/agent-browser-vs-chrome-devtools-mcp.md)
- [agent-browser vs Selenium](https://www.anchorterminal.com/compare/agent-browser-vs-selenium.md)
- [Airtop vs Chrome DevTools MCP](https://www.anchorterminal.com/compare/airtop-vs-chrome-devtools-mcp.md)
- [Airtop vs Selenium](https://www.anchorterminal.com/compare/airtop-vs-selenium.md)
- [Anchor Browser vs Chrome DevTools MCP](https://www.anchorterminal.com/compare/anchor-browser-vs-chrome-devtools-mcp.md)
- [Anchor Browser vs Selenium](https://www.anchorterminal.com/compare/anchor-browser-vs-selenium.md)
- [Browser Use vs Chrome DevTools MCP](https://www.anchorterminal.com/compare/browser-use-vs-chrome-devtools-mcp.md)
- [Browser Use vs Selenium](https://www.anchorterminal.com/compare/browser-use-vs-selenium.md)
- [Browserbase vs Chrome DevTools MCP](https://www.anchorterminal.com/compare/browserbase-vs-chrome-devtools-mcp.md)
- [Browserbase vs Selenium](https://www.anchorterminal.com/compare/browserbase-vs-selenium.md)
- [Browserless vs Chrome DevTools MCP](https://www.anchorterminal.com/compare/browserless-vs-chrome-devtools-mcp.md)
- [Browserless vs Selenium](https://www.anchorterminal.com/compare/browserless-vs-selenium.md)
- [Chrome DevTools MCP vs Hyperbrowser](https://www.anchorterminal.com/compare/chrome-devtools-mcp-vs-hyperbrowser.md)
- [Chrome DevTools MCP vs Notte](https://www.anchorterminal.com/compare/chrome-devtools-mcp-vs-notte.md)
- [Chrome DevTools MCP vs Playwright MCP](https://www.anchorterminal.com/compare/chrome-devtools-mcp-vs-playwright-mcp.md)
- [Chrome DevTools MCP vs Puppeteer](https://www.anchorterminal.com/compare/chrome-devtools-mcp-vs-puppeteer.md)
- [Chrome DevTools MCP vs Puppeteer (archived MCP reference server)](https://www.anchorterminal.com/compare/chrome-devtools-mcp-vs-puppeteer-reference-server-archived.md)
- [Chrome DevTools MCP vs Skyvern](https://www.anchorterminal.com/compare/chrome-devtools-mcp-vs-skyvern.md)
- [Chrome DevTools MCP vs Steel](https://www.anchorterminal.com/compare/chrome-devtools-mcp-vs-steel.md)
- [Chrome DevTools MCP vs TinyFish](https://www.anchorterminal.com/compare/chrome-devtools-mcp-vs-tinyfish.md)
- [Hyperbrowser vs Selenium](https://www.anchorterminal.com/compare/hyperbrowser-vs-selenium.md)
- [Notte vs Selenium](https://www.anchorterminal.com/compare/notte-vs-selenium.md)
- [Playwright MCP vs Selenium](https://www.anchorterminal.com/compare/playwright-mcp-vs-selenium.md)
- [Puppeteer (archived MCP reference server) vs Selenium](https://www.anchorterminal.com/compare/puppeteer-reference-server-archived-vs-selenium.md)
- [Puppeteer vs Selenium](https://www.anchorterminal.com/compare/puppeteer-vs-selenium.md)
- [Selenium vs Skyvern](https://www.anchorterminal.com/compare/selenium-vs-skyvern.md)
- [Selenium vs Steel](https://www.anchorterminal.com/compare/selenium-vs-steel.md)
- [Selenium vs TinyFish](https://www.anchorterminal.com/compare/selenium-vs-tinyfish.md)