SerpStack
A fast, no-headache REST API for real-time Google search results.
What it does
SerpStack sits in the category of search APIs: a hosted service that takes a query and returns structured, machine-readable search results instead of leaving you to render and scrape a results page yourself. For an application or an AI agent, that structure — clean JSON fields instead of raw HTML — is the entire value proposition.
Strengths
- Simple REST API that returns clean JSON for organic, ads, knowledge graph, and local pack results
- Generous free tier for testing before committing to a paid plan
- Consistent uptime and predictable response shape, which matters when an LLM agent is parsing results programmatically
- Straightforward authentication (a single access key) with no OAuth dance to build into an agent's tool layer
Best-fit use cases
Teams that want Google-quality SERP data without maintaining scraping infrastructure, and developers wiring a 'web_search' tool into an LLM agent who need a response format that's easy to summarize back to the model.
Pricing shape
Tiered monthly plans priced by request volume, with a free tier for evaluation and higher tiers unlocking more requests per month and faster refresh; no per-field or per-engine surcharges. As with any usage-billed API, the right plan depends on your query volume and how often your application — or an autonomous agent calling it in a loop — actually needs a fresh search rather than a cached one.
Ready to try it? Sign up for SerpStack and get real-time Google search results in a single API call.
Where it fits in an agent stack
When you're wiring a "web_search" tool into an LLM agent's function-calling schema, the provider you choose determines both the shape of the JSON your parsing code needs to handle and the latency budget for each turn of the agent loop. SerpStack is one of several reasonable defaults — see our comparison framework for how to weigh it against alternatives.