Free B2B email finder & verification MCP server. Find, verify, and enrich business emails without paid API subscriptions. Self-contained DNS/SMTP verification. Hunter.io alternative for AI agents.
Setup
Choose your client, copy the config, then fill in any required environment variables.
claude mcp add prospector --env PROSPECTOR_TIER='<PROSPECTOR_TIER>' -- npx prospector-mcp~/.codex/config.toml
[mcp_servers.prospector]
command = "npx"
args = ["prospector-mcp"]
env = { PROSPECTOR_TIER = "<PROSPECTOR_TIER>" }
# codex mcp add prospector --env PROSPECTOR_TIER='<PROSPECTOR_TIER>' -- npx prospector-mcp~/.cursor/mcp.json
{
"mcpServers": {
"prospector": {
"command": "npx",
"args": [
"prospector-mcp"
],
"env": {
"PROSPECTOR_TIER": "<PROSPECTOR_TIER>"
}
}
}
}.vscode/mcp.json
{
"servers": {
"prospector": {
"type": "stdio",
"command": "npx",
"args": [
"prospector-mcp"
],
"env": {
"PROSPECTOR_TIER": "<PROSPECTOR_TIER>"
}
}
}
}~/.gemini/settings.json
{
"mcpServers": {
"prospector": {
"command": "npx",
"args": [
"prospector-mcp"
],
"env": {
"PROSPECTOR_TIER": "<PROSPECTOR_TIER>"
}
}
}
}claude_desktop_config.json
{
"mcpServers": {
"prospector": {
"command": "npx",
"args": [
"prospector-mcp"
],
"env": {
"PROSPECTOR_TIER": "<PROSPECTOR_TIER>"
}
}
}
}.trae/mcp.json
{
"mcpServers": {
"prospector": {
"command": "npx",
"args": [
"prospector-mcp"
],
"env": {
"PROSPECTOR_TIER": "<PROSPECTOR_TIER>"
}
}
}
}Environment variables
PROSPECTOR_TIER
Replace the placeholders with your own credentials and keep them out of version control.