CDPM vs Usable Browser Agent
A side-by-side look at the CDPM and Usable Browser Agent MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.
C
CDPMBrowser Automation · Local subprocess (stdio)Shares numbered, logged-in Chrome instances over CDP across multiple Claude Code sessions, with per-tab command queues. Local stdio server.60GoodAuth: no auth requiredVerdict: choose CDPM for browser automation work as a local process; choose Usable Browser Agent for browser automation. You can also run both side by side in one mcpServers block.
Which MCP server should you choose?
CChoose CDPM when
- You need dedicated capabilities in the Browser Automation domain.
- You prefer a local stdio subprocess transport.
- Its auth model fits you: No auth required.
- You want tools like
browser_status, browser_launch, browser_close.
Choose Usable Browser Agent when
- You need dedicated capabilities in the Browser Automation domain.
- You have the keys it needs:
UBA_PORT, UBA_MEMORY_FILE, UBA_SECRETS_FILE. - You want tools like
browser_workflow_recall, browser_workflow_remember, browser_workflow_forget.
Feature & specification comparison
Rows where the two servers differ are marked.
| Spec | C CDPM | |
|---|---|---|
| Category | Browser Automation | Browser Automation |
| Quality signal | 60/100 · Good | 45/100 · Fair |
| Install command | Confirmed | Not confirmed yet |
| Transport | Local subprocess (stdio) | — |
| Auth | No auth required | Not declared |
| Pricing | Free | Not declared |
| Required env vars | None listed | UBA_PORTUBA_MEMORY_FILEUBA_SECRETS_FILE |
| Verified owner | Community listing | Community listing |
| GitHub stars | 2 | 0 |
| Directory activity | 1 views 0 installs 0 upvotes | 1 views 0 installs 0 upvotes |
| Tools | 28 | 34 |
| Full listing | View CDPM | View Usable Browser Agent |
Tools & capabilities
CDPM tools 28
browser_statusLive slots, tabs, openers, last actions, summaries, dialogsbrowser_launchStart a slot — only when the user asks; no `slot` = lowest free; `slots` (list) or `count` start several at once, lowest first; `url` / `urls` open a start page right away. Window or headless is the user's choice: if they didn't say, Claude asks first (without `headless`, a closed slot is not start…browser_closeClose gracefully (profile kept)browser_tabsList / open in background (returns ID) / close / bring to front (only when the user wants)browser_snapshotAccessibility text with refs; `page`, `find`, `refbrowser_textReadable text (main/article first, or one `ref`), paginatedbrowser_screenshotVisible area as PNG, background tabs included; no full-page capturebrowser_navigateWaits for load; slow servers are reported as "still loading", not as errorsbrowser_clickReal mouse click; reports covering elements, new tabs, form-validation failuresbrowser_typeReal key events per character (`clear`, `submit`, `fast`); verifies the value and does not press Enter for `submit` if the value differs (the site rejected or reformatted the input); date/time inputs are set after format validationbrowser_fillFill several inputs on one page in order, then optionally `submit` ("Enter" or a button ref); stops at the first failure, page change, dialog or a field whose value differs from what was typed (nothing is submitted then)browser_dialogAccept or dismiss an open alert/confirm/prompt/beforeunload (`text` for prompt). Claude decides from the message- +16 more on the listing page
Usable Browser Agent tools 34
browser_workflow_recallSearch local workflow memory before starting a repeated/changing-site taskbrowser_workflow_rememberSave verified reusable workflow steps, pitfalls, and durable UI cuesbrowser_workflow_forgetTombstone stale, sensitive, or incorrect workflow memorybrowser_snapshotAccessibility/DOM tree with `[ref=eN]` handles — the primary perception toolbrowser_navigateNavigationbrowser_clickClick by ref — supports right/middle button, double-click, and ctrl/shift/alt/meta modifiersbrowser_dragDrag one element onto another (kanban, sortable lists, sliders)browser_typeType into a field by ref (optional `submit` = press Enter)browser_fill_formFill many fields `[{ref,text}]` in one callbrowser_fill_secretFill a username/password from a server-side secret aliasbrowser_loginAtomically fill username/password from a server-side secret alias and submitbrowser_selectChoose a `<select>` option by label/value- +22 more on the listing page
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.
CDPM
{
"mcpServers": {
"igelharine-cdpm": {
"command": "npx",
"args": [
"-y",
"cdpm-mcp"
]
}
}
}
Usable Browser Agent
No confirmed install command for Usable Browser Agent yet — follow the setup steps linked from its listing page rather than a guessed package name.
Frequently asked questions
CDPM is categorized under Browser Automation and uses a local stdio subprocess. Usable Browser Agent belongs to Browser Automation and uses an install path we have not confirmed yet. Pick CDPM for browser automation work and Usable Browser Agent 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. Usable Browser Agent has no confirmed install command yet — follow its own setup instructions.
CDPM is listed as free. Auth: no auth required. Usable Browser Agent has no declared pricing — check the project's own site. 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 igelharine-cdpm and usable-browser-agent as separate keys in the same mcpServers object, and your assistant will call tools from either one.
On AllMCPs, CDPM has a quality signal of 60/100 (Good) with 1 views, 0 installs and 2 GitHub stars. Usable Browser Agent has 45/100 (Fair) with 1 views, 0 installs and 0 GitHub stars.
