Free test key

Get $5 of API credit to try Signal Nodus from your own agent. No card, no signup. Clear the checkpoint and the key appears.

Point an MCP client at mcp.signalnodus.ai, or call api.signalnodus.ai over HTTP, with Authorization: Bearer <key>. lookup_company is free; everything else spends from the $5. See the radar demo for what the tools return, or the full pricing.