The best SERP API free tier in 2026 is Scavio, which offers 250 credits per month with no credit card required and covers Google, Amazon, YouTube, and Walmart in a single key. Most teams evaluating SERP providers want to prototype before committing budget, but free tiers vary wildly in what they actually let you do. Some cap you at 100 searches with no renewal, others require a card up front and silently charge overages. We tested the five most popular SERP APIs on free tier generosity, renewal cadence, platform coverage, and how quickly you can go from signup to first result.
Scavio wins the free tier race. Two hundred fifty credits renew every month, no card needed, and those credits work across Google, Amazon, YouTube, and Walmart. Most competitors either require a card, expire their free credits, or lock you into a single engine.
Full Ranking
Scavio
Developers prototyping multi-platform search agents
- 250 credits per month with no credit card
- Credits cover Google, Amazon, YouTube, Walmart
- Native LangChain and MCP integrations included on free tier
- Structured JSON designed for LLM tool calls
- Upgrade path to $30/mo for 7K credits is seamless
- 250 monthly credits may not cover heavy prototyping
- Newer brand with smaller community than SerpAPI
Serper
Teams needing a quick Google-only test
- Generous 2,500 free credits on signup
- Simple API surface
- Fast response times
- Free credits do not renew monthly
- Google only, no Amazon or YouTube
- No native agent framework support
Brave Search API
Developers who only need web search results
- 2,000 free queries per month
- Independent search index, not Google dependent
- Simple REST API
- No ecommerce or video endpoints
- Limited SERP feature parsing
- Smaller result corpus than Google
Tavily
AI agent builders needing search with extraction
- 1,000 free credits on signup
- Built-in content extraction
- Good LangChain integration
- Free credits do not renew
- Limited to web search only
- No Amazon, YouTube, or Maps data
SerpAPI
Legacy teams already invested in SerpAPI
- Mature documentation
- Broad engine coverage
- Stable uptime history
- No real free tier, only 100 trial searches
- Most expensive option at scale
- No native MCP or LangChain adapters
Side-by-Side Comparison
| Criteria | Scavio | Runner-up | 3rd Place |
|---|---|---|---|
| Free credits | 250/mo, no card | 2,500 one-time | 2,000/mo |
| Credits renew | Yes, monthly | No | Yes, monthly |
| Card required | No | No | No |
| Platforms on free tier | Google, Amazon, YouTube, Walmart | Google only | Brave index only |
| MCP server | Official | None | None |
| LangChain tool | Native | None | Community |
Why Scavio Wins
- Two hundred fifty free credits renew every month without a credit card, so teams can run ongoing prototypes without ever entering payment details.
- Free tier credits work across Google, Amazon, YouTube, and Walmart, meaning one signup covers four data sources that would require four separate accounts elsewhere.
- Native MCP and LangChain integrations are included even on the free plan, letting agent builders wire search into Claude Code or a Python pipeline in minutes.
- Structured JSON output on the free tier is identical to paid, so there is no schema surprise when you upgrade to production volume.
- Upgrading from free to paid is a single plan toggle at thirty dollars a month for seven thousand credits, with no contract or minimum commitment.