browser-harness vs Oya Browser
browser-harness is a plugin bundle for AI coding tools published by browser-use. Marketplaces we read that list it: 1 (Claude Code: claude-plugins-community). Oya Browser is an MCP server published by OyadotAI. Marketplaces we read that list it: 1 (Official MCP Registry). As of our marketplace pass on 2026-10-14. This pair was picked by a reader, not by our comparison rule, so search engines are asked not to index the page.
Where each is published
| Marketplace |  browser-harness |  Oya Browser |
|---|---|---|
| Claude Code: claude-plugins-community | Listed Version: 0.1.0 Forks (GitHub): 1 808 Stars (GitHub): 18 417 Not marked · First seen |
Not listed |
| Official MCP Registry | Not listed | Listed Version: 1.0.185 Forks (GitHub): 278 Stars (GitHub): 350 Not marked · First seen |
Each figure is the marketplace's own and is never added up across marketplaces. A marketplace that publishes no figure shows none: no number is not zero.
The facts side by side
| Fact | browser-harness | Oya Browser |
|---|---|---|
| Marketplaces that list it | 1 | 1 |
| Stars (GitHub) (differs) | 18 417 (better) | 350 (worse) |
| Forks (GitHub) (differs) | 1 808 (better) | 278 (worse) |
| Last release (differs) | Not published | 2026-10-13 |
| Where it runs (differs) | Installs as a plugin bundle | Remote server (oyabrowser.com/mcp/pool) |
| Transport (differs) | Not stated | Streamable HTTP |
| Tools it declares | Not published | Not published |
| Environment variables it asks for | Not published | Not published |
| Parts of the bundle (differs) | 1 | Not a bundle |
| Licence (differs) | MIT | Not stated |
| Repository (differs) | github.com/browser-use/browser-harness | github.com/oyadotai/oya-browser |
| Changes in the last 7 days (differs) | 0 | 6 |
| First seen | 2026-10-11 | 2026-10-11 |
| Endpoint at the last check (differs) | no remote endpoint we check | not checked yet |
Lines where the two differ have a tinted background and bold values. Where the data itself says which value is better (more marketplaces, a larger figure of the same marketplace, a fresher release, a verified mark on a marketplace that lists both), the better one is also marked green with ▲ and the worse one red with ▼. Where it runs, the transport, the tools, the settings, hooks, the bundle's parts, the licence and the week's changes are marked only as different: more or fewer is not better in itself.
What each says it does
browser-harness
Open-source browser agent driven via CDP — direct browser control, 79K stars, YC W25. browser-harness gives Claude Code direct, low-level control of a real Chrome browser via the Chrome DevTools Protocol. Coordinate-level clicks pass through iframes, shadow DOM, and cross-origin frames at the compositor level — no selector hunting, no Playwright wrappers. Connects to a long-running Browser Use Cloud or local browser session, so logins persist across runs. Highlights: - Screenshot-first workflow: capture → read pixel → click_at_xy → re-capture to verify - Bulk HTTP fetch helper for static pages (no browser overhead) - Raw CDP escape hatch for anything helpers don’t cover - Interaction skills for dialogs, dropdowns, iframes, shadow DOM, file uploads, cross-origin frames - Remote browsers via Browser Use Cloud — share a live URL with a human when login/CAPTCHA blocks the agent
Oya Browser
Real Chrome for agents: start a browser, read pages as numbered markdown, click, type, hand off.
How to run each
browser-harness As a Claude Code plugin
/plugin marketplace add anthropics/claude-plugins-community
/plugin install browser-harness@claude-communityOya Browser As a remote MCP server
claude mcp add --transport http oya-browser https://oyabrowser.com/mcp/pool --header "Authorization: Bearer <YOUR_API_KEY>"Requires: Authorization header
Commands built only from what the marketplaces declare; the full set for every client is on each card.
Tools each declares
Neither one's marketplaces publish a list of tools, so there is nothing to compare.
Settings each asks for
Neither one's marketplaces publish the settings it asks for.
What it can do: browser-harness · What it can do: Oya Browser · Compare two other plugins
Data comes from the public marketplace file https://github.com/anthropics/claude-plugins-community/blob/HEAD/.claude-plugin/marketplace.json. Data comes from the Official MCP Registry (registry.modelcontextprotocol.io), CC0 1.0. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.