Google Custom Search is Google’s Programmable/Custom Search API, which needs a Google Cloud key and caps free queries. FreeSerp is a free, keyless web search API for AI agents — a drop-in alternative you can call with no key, no signup and no per-request bill.
Point your agent at FreeSerp’s JSON endpoint or its MCP connector and it searches 20M+ live sites in real time, getting back ranked results with LLM summaries — the same shape you would wire Google Custom Search into, minus the account and the invoice.
When does Google Custom Search still win? When you specifically need the canonical Google index. Reach for FreeSerp when you want free, agent-native web search without a key — for retrieval, grounding, monitoring or tool-calls where cost-per-request and signup are the real blockers.
curl 'https://freeserp.ai/api.php?q=ai+chatbot&size=5'Yes — FreeSerp is a free, keyless web search API over 20M+ live sites, built for AI agents.
No. FreeSerp has no key and no signup; an agent can call it directly.
Yes — via the JSON endpoint at /api.php or the MCP server at /mcp.