Tavily, Exa, Firecrawl, Perplexity, and Linkup are all tools for agents to search the web.

I’ve been building a harness the past few months and supports them all out of the box with an API key.

Kagi also has an API. People who hate ads are probably the same folk that should be paying for Kagi. That's the sane alternative world where companies respect their users.