Leapfrog vs Context7
A side-by-side look at the Leapfrog and Context7 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 developer tools work as a local process; choose Context7 for developer tools 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 Developer Tools domain.
- You prefer a local stdio subprocess transport.
- You want tools like
session_create, session_create_batch, session_list.
Choose Context7 when
- You need dedicated capabilities in the Developer Tools domain.
- You prefer a local stdio subprocess transport.
- Its auth model fits you: API key required.
- You want tools like
resolve-library-id, query-docs.
Feature & specification comparison
Rows where the two servers differ are marked.
| Spec | ||
|---|---|---|
| Category | Developer Tools | Developer Tools |
| Quality signal | 57/100 · Good | 65/100 · Great |
| Install command | Confirmed | Confirmed |
| Transport | Local subprocess (stdio) | Local subprocess (stdio) |
| Auth | Not declared | API key required |
| Pricing | Not declared | Free |
| Required env vars | None listed | None listed |
| Verified owner | Community listing | Community listing |
| GitHub stars | 5 | 63,209 |
| Directory activity | 2 views 0 installs 0 upvotes | 9 views 0 installs 0 upvotes |
| Tools | 37 | 2 |
| Full listing | View Leapfrog | View Context7 |
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
Context7 tools 2
resolve-library-idResolves a general library name into a Context7-compatible library ID.query-docsRetrieves documentation for a library using a Context7-compatible library ID.
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"
]
}
}
}
Context7
{
"mcpServers": {
"upstash-context7": {
"command": "npx",
"args": [
"-y",
"ctx7"
]
}
}
}
Frequently asked questions
Leapfrog is categorized under Developer Tools and uses a local stdio subprocess. Context7 belongs to Developer Tools and uses a local stdio subprocess. Pick Leapfrog for developer tools work and Context7 for developer tools.
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. Context7 is listed as free. 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 leapfrog and upstash-context7 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. Context7 has 65/100 (Great) with 9 views, 0 installs and 63,209 GitHub stars.