Subdomain API vs Vaara
A side-by-side look at the Subdomain API and Vaara MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.
S
Subdomain APISecurity · Remote HTTP/SSEFind known subdomains of a domain. Passive data; may include historic entries. List or count.39FairAuth: no auth requiredVerdict: choose Subdomain API for security work over a hosted endpoint; choose Vaara for security as a local process. You can also run both side by side in one mcpServers block.
Which MCP server should you choose?
SChoose Subdomain API when
- You need dedicated capabilities in the Security domain.
- You prefer a remote HTTP/SSE transport.
- Its auth model fits you: No auth required.
Choose Vaara when
- You need dedicated capabilities in the Security domain.
- You prefer a local stdio subprocess transport.
- Its auth model fits you: No auth required.
Feature & specification comparison
Rows where the two servers differ are marked.
| Spec | S Subdomain API | |
|---|---|---|
| Category | Security | Security |
| Quality signal | 39/100 · Fair | 49/100 · Fair |
| Install command | Confirmed | Confirmed |
| Transport | Remote HTTP/SSE | Local subprocess (stdio) |
| Auth | No auth required | No auth required |
| Pricing | Not declared | Free |
| Required env vars | None listed | None listed |
| Verified owner | Community listing | Community listing |
| GitHub stars | — | 15 |
| Directory activity | 1 views 0 installs 0 upvotes | 1 views 0 installs 0 upvotes |
| Tools | Not listed | Not listed |
| Full listing | View Subdomain API | View Vaara |
Tools & capabilities
Subdomain API tools
No tool names declared yet. Check the project README from the listing page.
Vaara tools
No tool names declared yet. Check the project README from 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.
Subdomain API
{
"mcpServers": {
"subdomain-api": {
"command": "npx",
"args": [
"-y",
"subdomain-api"
]
}
}
}
Vaara
{
"mcpServers": {
"vaara": {
"command": "npx",
"args": [
"--upstream-arg",
"-y",
"--upstream-arg",
"@sap/mdk-mcp-server"
]
}
}
}
Frequently asked questions
Subdomain API is categorized under Security and uses a remote HTTP/SSE transport. Vaara belongs to Security and uses a local stdio subprocess. Pick Subdomain API for security work and Vaara for security.
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.
Subdomain API has no declared pricing — check the project's own site. Auth: no auth required. Vaara is listed as free. Auth: no auth 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 subdomain-api and vaara as separate keys in the same mcpServers object, and your assistant will call tools from either one.
On AllMCPs, Subdomain API has a quality signal of 39/100 (Fair) with 1 views, 0 installs and 0 GitHub stars. Vaara has 49/100 (Fair) with 1 views, 0 installs and 15 GitHub stars.