Urlbox vs Rendex MCP
A side-by-side look at the Urlbox and Rendex MCP MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.
Verdict: choose Urlbox for browser automation work as a local process; choose Rendex MCP for browser automation as a local process. You can also run both side by side in one mcpServers block.
Which MCP server should you choose?
Choose Urlbox when
- You need dedicated capabilities in the Browser Automation domain.
- You prefer a local stdio subprocess transport.
- Its auth model fits you: API key required.
- You have the keys it needs:
URLBOX_API_KEY, SECRET_KEY, URLBOX_DOWNLOAD_DIR.
Choose Rendex MCP when
- You need dedicated capabilities in the Browser Automation domain.
- You prefer a local stdio subprocess transport.
- Its auth model fits you: API key required.
- You have the keys it needs:
RENDEX_API_KEY. - You want tools like
watch_create, watch_test, watch_list.
Feature & specification comparison
Rows where the two servers differ are marked.
| Spec | ||
|---|---|---|
| Category | Browser Automation | Browser Automation |
| Quality signal | 45/100 · Fair | 59/100 · Good |
| Install command | Confirmed | Confirmed |
| Transport | Local subprocess (stdio) | Local subprocess (stdio) |
| Auth | API key required | API key required |
| Pricing | BYOK (pay the provider) | Freemium |
| Required env vars | URLBOX_API_KEYSECRET_KEYURLBOX_DOWNLOAD_DIR | RENDEX_API_KEY |
| Verified owner | Community listing | Community listing |
| GitHub stars | 3 | 6 |
| Directory activity | 0 views 0 installs 0 upvotes | 3 views 0 installs 0 upvotes |
| Tools | Not listed | 8 |
| Full listing | View Urlbox | View Rendex MCP |
Tools & capabilities
Urlbox tools
No tool names declared yet. Check the project README from the listing page.
Rendex MCP tools 8
watch_createCreate a watch (active → captures its baseline now)watch_testDry-run a config first (creates nothing)watch_listList your watcheswatch_getFetch one watch (+ baseline URL)watch_runRun a check now (1 credit)watch_runsRun history with signed before/after/overlay URLswatch_updateEdit a watch in place — interval, diff mode, channels, render paramswatch_deleteDelete a watch + its runs
Ready-to-paste client configs
Paste either block (or both) into your client config, e.g. claude_desktop_config.json or ~/.cursor/mcp.json. We only show a config when the install command is confirmed.
Urlbox
{
"mcpServers": {
"urlbox": {
"command": "npx",
"args": [
"-y",
"@urlbox/screenshot-mcp"
],
"env": {
"URLBOX_API_KEY": "YOUR_URLBOX_API_KEY_HERE",
"SECRET_KEY": "YOUR_SECRET_KEY_HERE",
"URLBOX_DOWNLOAD_DIR": "YOUR_URLBOX_DOWNLOAD_DIR_HERE"
}
}
}
}
Rendex MCP
{
"mcpServers": {
"copperline-labs-rendex-mcp": {
"command": "npx",
"args": [
"-y",
"@copperline/rendex-mcp"
],
"env": {
"RENDEX_API_KEY": "YOUR_RENDEX_API_KEY_HERE"
}
}
}
}
Frequently asked questions
Urlbox is categorized under Browser Automation and uses a local stdio subprocess. Rendex MCP belongs to Browser Automation and uses a local stdio subprocess. Pick Urlbox for browser automation work and Rendex MCP for browser automation.
Copy the mcpServers block from the config section on this page into your client's config (for example claude_desktop_config.json or ~/.cursor/mcp.json), then fully restart the client.
Urlbox is bring-your-own-key: usage is billed by the API provider you supply a key for. Auth: api key required. Rendex MCP is listed as freemium — a free tier with paid plans. Auth: api key required. If a server needs environment variables such as API keys, define them under the env key in your client's MCP config.
Yes. MCP clients support multiple servers: add urlbox and copperline-labs-rendex-mcp as separate keys in the same mcpServers object, and your assistant will call tools from either one.
On AllMCPs, Urlbox has a quality signal of 45/100 (Fair) with 0 views, 0 installs and 3 GitHub stars. Rendex MCP has 59/100 (Good) with 3 views, 0 installs and 6 GitHub stars.
