# agent-browser vs Functionize MCP server (slim)

> agent-browser scores 66.6 (B) to Functionize's 44.7 (E) for browser automation. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/agent-browser-vs-functionize-mcp.md (~2,850 tokens) · this version ~630 tokens · JSON https://www.anchorterminal.com/compare/agent-browser-vs-functionize-mcp.json · canonical https://www.anchorterminal.com/compare/agent-browser-vs-functionize-mcp
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agent-browser scores 66.6 (B) on agent readiness against Functionize MCP server's 44.7 (E), and leads in 6 of 7 scored categories. Both do browser automation.

- agent-browser: B 66.6, rank #316 of 1210 · https://www.anchorterminal.com/tools/agent-browser.min.md
- Functionize MCP server: E 44.7, rank #1031 of 1210 · https://www.anchorterminal.com/tools/functionize-mcp.min.md
- agent-browser, good for Coding agents with a shell that want short commands and compact snapshots. Ahead on Schema & documentation, 84 against 29; Agent ergonomics, 78 against 43; Security & auth, 67 against 56; Payments & pricing, 60 against 30; Maintenance & community, 70 against 49. Also No key needed to call it; Runs on your own machine; Open source.
- Functionize MCP server, good for Teams that use Functionize Studio and want a coding agent to request, run and diagnose end-to-end browser tests of web apps without driving a browser itself. Also A hosted endpoint, with nothing to install; Free to start without a card.

| Category | agent-browser | Functionize MCP server |
| --- | --- | --- |
| Reliability (16%) | 48 | 50 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 84 | 29 |
| Agent ergonomics (13%) | 78 | 43 |
| Security & auth (14%) | 67 | 56 |
| Payments & pricing (10%) | 60 | 30 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 70 | 49 |
| Transparency & trust (7%) | 61 | 59 |

| Fact (where they differ) | agent-browser | Functionize MCP server |
| --- | --- | --- |
| Vendor | Vercel Labs | Functionize, Inc. |
| Hosted endpoint | no (local only) | `https://mcp.functionize.com/mcp` |
| Transports | stdio | Streamable HTTP |
| Auth | None | OAuth |
| Pricing | Free | Freemium |
| Licence | Apache-2.0 | Proprietary hosted service under Functionize's Terms of Service (version 2.0, effective 10 July 2026). The Claude Code plugin and its two skills are MIT-licensed; the server's source isn't public |
| Tools exposed | 158 | 10 |
| Last release | 2026-10-01 | 2026-10-08 |
| Terms last updated | no document linked |  |
| Privacy policy last updated | no document linked |  |
| Popularity | 44k stars, 2.1M npm/wk | none |