Leapfrog vs Noncelogic MCP
A side-by-side look at the Leapfrog and Noncelogic MCP MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.
Verdict: choose Leapfrog for browser automation work as a local process; choose Noncelogic 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 Leapfrog when
- You need dedicated capabilities in the Browser Automation domain.
- You prefer a local stdio subprocess transport.
- You want tools like
session_create, session_create_batch, session_list.
Choose Noncelogic MCP when
- You need dedicated capabilities in the Browser Automation domain.
- You prefer a local stdio subprocess transport.
- You have the keys it needs:
ROVE_API_KEY. - You want tools like
navigate, interact, extract_schema.
Feature & specification comparison
Rows where the two servers differ are marked.
| Spec | ||
|---|---|---|
| Category | Browser Automation | Browser Automation |
| Quality signal | 57/100 · Good | 59/100 · Good |
| Install command | Confirmed | Confirmed |
| Transport | Local subprocess (stdio) | Local subprocess (stdio) |
| Auth | Not declared | Not declared |
| Pricing | Not declared | Not declared |
| Required env vars | None listed | ROVE_API_KEY |
| Verified owner | Community listing | Community listing |
| GitHub stars | 5 | 0 |
| Directory activity | 2 views 0 installs 0 upvotes | 2 views 0 installs 0 upvotes |
| Tools | 37 | 31 |
| Full listing | View Leapfrog | View Noncelogic MCP |
Tools & capabilities
Leapfrog tools 37
session_createCreate a new isolated browser session with its own cookies and state. Returns a short session ID (e.g. s_k3m7x1) to pass to all other tools. Each session is a separate BrowserContext — no cookie leakage between sessions. Pool limit: 15 concurrent sessions. Sessions auto-expire after 30 minutes of inactivity. Use keep-alive pattern (periodic navigate or snapshot) for long-running sessions.session_create_batchCreate multiple isolated browser sessions concurrently — 5-10x faster than sequential session_create calls. Optionally navigate each to a URL. Returns all session IDs. A single reflow positions all windows into a unified grid after all sessions are created.session_listList all active browser sessions with their URLs and idle times.session_destroyClose and clean up a browser session. Frees a pool slot.session_save_profileSave a session's cookies and auth state to disk. Use this after logging in to a site so future sessions can restore that login. Pass the returned profile path to session_create's profilePath to reuse it.session_list_profilesList all saved authentication profiles.navigateNavigate to a URL and return a compact accessibility snapshot with @eN refs. Refs like @e1, @e2 can be passed directly to the 'act' tool — no CSS selectors needed. Snapshots are ~200-500 tokens (vs 15,000 with Playwright MCP).snapshotRe-snapshot the current page for fresh @eN refs. Use after 'act' when you need to re-orient, or scope to a region with 'selector'. Use 'selector' to dramatically reduce tokens (e.g. 'form', '#results').diffCompare the current page state against the last snapshot for this session. Returns only what changed (additions, removals, changes) — massive token savings vs a full re-snapshot. Use after 'act' instead of 'snapshot' when you just need to see what changed. On first call (no previous snapshot), returns the full snapshot with a note. Use 'selector' to scope the diff to a page region.actPerform a browser interaction: click, fill, type, check, select, press key, scroll, hover, mousemove, drag, upload, resize, back, forward. Use @eN refs from navigate/snapshot as the target (e.g. '@e2'). CSS selectors also work. drag: requires target (source) and target2 (destination). upload: requires target (file input) and filePaths. resize: requires width and height (no target needed). holdDuration: for click, holds mouse down for N ms (long-press). Returns a fresh snapshot if the page navigated, or just the action result if it didn't.screenshotCapture a screenshot of the current page. Returns the image inline as base64. Optionally save to disk with savePath.extractExtract data from the page without a full snapshot. Types: text (visible text), html (markup), title, url, js (evaluate JavaScript). Use target with @eN or CSS selector for element-specific extraction.- +25 more on the listing page
Noncelogic MCP tools 31
navigateNavigate to a URL in a hosted Chromium browser and return the page title and final URL after redirects. Creates a new browser session automatically if no session_id is provided. Use this as the first step in any browser automation workflow. Use stealth mode when visiting public websites that may block automated browsers. Use action_delay_ms to add human-like jitter between subsequent actions in the same session.interactPerform a click or fill action on a page element in an active browser session. Use "click" to click buttons, links, checkboxes, or any clickable element by CSS selector. Use "fill" to type text into input fields, textareas, or contenteditable elements — pass the target CSS selector and the text value in params. Requires an active session created by the navigate tool. Do not use this for navigation — use the navigate tool instead.extract_schemaExtract structured data from a web page according to a JSON schema. Navigates to the given URL, renders the page in a headless browser, and returns data matching your schema definition. Use this instead of navigate + get_a11y_tree when you need specific structured fields (e.g. product name, price, rating) rather than a full page snapshot. Each key in the schema should map to a CSS selector or description of the data to extract.screenshotCapture a PNG screenshot of a web page. Operates in two modes: (1) Pass a session_id to screenshot the current page in an active session — use this when you need to see the visual state after interactions. (2) Pass a url without session_id to take a one-shot screenshot without creating a persistent session — use this for quick visual checks. Returns a URL to the screenshot image. Prefer get_a11y_tree over screenshot when you need to read page content, as it uses 77% fewer tokens.get_a11y_treeGet a structured accessibility tree snapshot of the current page in an active browser session. Returns a hierarchical representation of all visible elements including their roles, names, values, and states — similar to what a screen reader sees. Use this as the primary way to read page content, as it uses 77% fewer tokens than a screenshot. Use this after navigate to understand page structure, find interactive elements by their accessible names, or verify that an action changed the page state. Requires a session created by navigate.close_sessionClose a browser session and release its server-side resources (browser context, memory, and any open pages). Call this when you are done with a browser session to free resources and avoid hitting session limits. If the closed session is the currently active session, the internal session reference is cleared — subsequent tool calls will need a new navigate to create a fresh session.clickClick an element on the page by CSS selector, accessible label or a11y tree ref. Use this to interact with buttons, links, checkboxes, and other clickable elements. In a supervised session, a click that opens a popup makes the popup the current page.fillType text into a form field. By default clears any existing value first, then types the new value.get_textExtract the text content of an element on the page. Useful for reading specific values like prices, headings, or status messages.scrollScroll the page in a given direction, or scroll a specific scrollable element. Useful for loading lazy content or reaching elements below the fold.evaluateExecute arbitrary JavaScript in the browser page context. Returns the result of the expression. Use for advanced DOM queries, custom extraction logic, or page manipulation.list_pagesList the pages open in this session's browser, with page ids, opener, URL, title and status, and which page is current. Popups the page opened appear here. Does not count as a fresh observation.- +19 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.
Leapfrog
{
"mcpServers": {
"leapfrog": {
"command": "npx",
"args": [
"-y",
"leapfrog-mcp"
]
}
}
}
Noncelogic MCP
{
"mcpServers": {
"mcp-313": {
"command": "npx",
"args": [
"-y",
"@roveapi/mcp"
],
"env": {
"ROVE_API_KEY": "YOUR_ROVE_API_KEY_HERE"
}
}
}
}
Frequently asked questions
Leapfrog is categorized under Browser Automation and uses a local stdio subprocess. Noncelogic MCP belongs to Browser Automation and uses a local stdio subprocess. Pick Leapfrog for browser automation work and Noncelogic 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.
Leapfrog has no declared pricing — check the project's own site. Noncelogic MCP 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 leapfrog and mcp-313 as separate keys in the same mcpServers object, and your assistant will call tools from either one.
On AllMCPs, Leapfrog has a quality signal of 57/100 (Good) with 2 views, 0 installs and 5 GitHub stars. Noncelogic MCP has 59/100 (Good) with 2 views, 0 installs and 0 GitHub stars.