A side-by-side look at the Fair Value Calculator and Magic MCP MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.
Verdict: choose Fair Value Calculator for developer tools work over a hosted endpoint; choose Magic MCP for developer tools as a local process. You can also run both side by side in one mcpServers block.
TWENTY_FIRST_API_KEY, API_KEY_21ST.Rows where the two servers differ are marked.
| Spec | ||
|---|---|---|
| Category | Developer Tools | Developer Tools |
| Quality signal | 36/100 · Fair | 53/100 · Good |
| Install command | Confirmed | Confirmed |
| Transport | Remote HTTP/SSE | Local subprocess (stdio) |
| Auth | Not declared | API key required |
| Pricing | Not declared | Paid service |
| Required env vars | None listed | TWENTY_FIRST_API_KEYAPI_KEY_21ST |
| Verified owner | Community listing | Community listing |
| GitHub stars | 0 | 5,997 |
| Directory activity | 0 views 0 installs 0 upvotes | 16 views 1 installs 0 upvotes |
| Tools | Not listed | Not listed |
| Full listing | View Fair Value Calculator | View Magic MCP |
No tool names declared yet. Check the project README from the listing page.
No tool names declared yet. Check the project README from the listing page.
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.
{
"mcpServers": {
"fair-value-calculator": {
"url": "https://www.fairvalue-calculator.com/mcp"
}
}
}
{
"mcpServers": {
"21st-dev-magic-mcp": {
"command": "npx",
"args": [
"-y",
"@21st-dev/cli@latest"
],
"env": {
"TWENTY_FIRST_API_KEY": "YOUR_TWENTY_FIRST_API_KEY_HERE",
"API_KEY_21ST": "YOUR_API_KEY_21ST_HERE"
}
}
}
}