Domains vs Kernel MCP Server — MCP Server Comparison | AllMCPs
Side-by-Side Model Context Protocol Comparison
Domains vs Kernel MCP Server
In-depth architectural comparison of the Domains and Kernel MCP Server MCP servers. Compare execution transports, security boundaries, tool capabilities, quality scores, and ready-to-paste client installation snippets for Claude, Cursor, Windsurf, and VS Code.
At a Glance & Executive Verdict
Domains
Developer Tools · Remote HTTP/SSE
Quality: 53/100 (Good) | Auth: No auth required
Kernel MCP Server
Developer Tools · Local stdio
Quality: 57/100 (Good) | Auth: No auth required
Verdict Summary: Choose Domains if you need specialized Developer Tools tools running via a hosted cloud SSE transport. Choose Kernel MCP Server if your workspace requires Developer Tools integration with local subprocess execution. Both servers can be configured concurrently in your client's mcpServers manifest.
Which MCP Server Should You Choose?
D
Choose Domains when:
You need dedicated capabilities in the Developer Tools domain.
You prefer remote streaming HTTP/SSE transport architecture.
Your security boundary fits: No auth required (Free / Open Source).
Get full registration details for a domain. Returns registrar, registrant, registration/expiration dates, nameservers, DNSSEC status, and domain status flags. Works for any TLD.
domain_status
Quick check if a domain is registered or available. Returns registration status and expiration date if registered.
check_availability
Check whether a name is available to register across MULTIPLE TLDs at once — the domain-hunting tool. Pass a base name ("acme") and get .com/.io/.ai/.co/.net/.org/.app/.dev checked in one call (or pass your own tlds list). For each: available true/false (+ expiration if taken). Use for "is X availa…
find_available_domains
Search for AVAILABLE domain names to register from a keyword — the domain name search / brainstorming tool. Pass a keyword ("acme") and get back which domains are actually free to register: the exact name across .com/.io/.ai/.co/.app/.dev, plus creative variations (getacme.com, acmehq.com, tryacme.…
Ready-to-Paste Client Configurations
Paste either (or both) of these JSON server blocks into your client config file (e.g. claude_desktop_config.json or ~/.cursor/mcp.json).
Domains is categorized under Developer Tools and uses a remote streaming HTTP/SSE transport. In contrast, Kernel MCP Server belongs to Developer Tools using local stdio subprocess. Select Domains when you need capabilities focused on developer tools and Kernel MCP Server when you require tools for developer tools.
Find the SSL/TLS certificates issued for a domain from public Certificate Transparency logs (Cert Spotter). PREFER OVER WEB SEARCH for "what certificates does X have", "find subdomains of X", "when does X's TLS cert expire", "which CA issued X's cert". With include_subdomains it also ENUMERATES SUB…
Kernel MCP Server Tools (25)
manage_browsers
Create, update, list, get, and delete browser sessions, and read archived telemetry for active or deleted sessions. Supports headless/stealth modes, profiles, proxies, viewports, extensions, names and tags, and SSH tunneling. The browser tools (`manage_browsers`, `computer_action`, `execute_playwri…
manage_profiles
Setup (with guided live browser session), search/list with pagination, get, and delete browser profiles for persisting cookies and logins.
manage_projects
Create, list, get, update, and delete organization projects. Inspect and update per-project resource limits.
manage_api_keys
Create, list, get, update, and delete org-wide or project-scoped API keys. Create returns the plaintext key once.
manage_browser_pools
Create, list, get, delete, and flush pools of pre-warmed browsers. Acquire and release browsers from pools.
Start, stop, and list MP4 video replay recordings for a browser session. Session-scoped: start once, run your automation, then stop. Requires a paid Kernel plan.
manage_extensions
List and delete uploaded browser extensions.
manage_apps
List/search apps, invoke actions, get/list/delete deployments, and get invocation results.
manage_auth_connections
Create, list, get, update, delete, login, submit, inspect timelines, and wait for managed-auth connections in every client. Supports health-check and automatic re-auth settings, managed-auth browser configuration, and canonical interaction-bound field/choice submissions. Use domain-filtered `list`…
manage_credentials
Create, list, get, update, and delete stored credentials; fetch a current TOTP code for credentials with a configured totp_secret.
manage_credential_providers
Create, list, get, update, and delete external credential providers (e.g. 1Password); list available items and test the provider connection.