Overview
LangSearch offers a dedicated Web Search API that empowers AI agents to connect with the internet, providing them with up-to-date information and context. The platform allows models to find relevant sources and integrate usable context into their responses, facilitating more informed reasoning. It supports integration through its API, MCP (Model Control Plane), or as a Skill within agent workflows.
The service includes all essential web search features at no cost, such as titles, source links, search snippets, and full webpage text. Users can control per-result text length, apply domain inclusion and exclusion filters, and retrieve up to 50 results per request. Date and date-range filtering are also available to refine search outcomes. LangSearch emphasizes enterprise-grade security, featuring SOC 2 Type II auditing, zero data retention, GDPR compliance, and a 99.99% availability SLA.
Key use cases include enabling coding agents to find official documentation and release notes for upgrades, assisting market research agents in retrieving recent announcements and industry coverage for sourced briefs, and equipping sales agents with company research and newsroom posts for account intelligence.
Key features
- Free Web Search API for AI agents
- Access to source links and full webpage text
- Per-result text length control
- Domain inclusion and exclusion filtering
- Up to 50 results per request
- Date and date-range filtering
- SOC 2 Type II audited security
- Zero data retention and GDPR compliance
Who uses it
The tool is primarily designed for developers and AI engineers building AI agents, as well as enterprises requiring secure and reliable web search infrastructure for their agentic applications.
Pros
- Completely free Web Search API with all features included.
- Provides full webpage text and source links without extra charges.
- Offers enterprise-grade security with SOC 2 Type II audit and zero data retention.
- Supports advanced filtering options like domain inclusion/exclusion and date ranges.
- Designed for seamless integration with AI agents via API, MCP, or Skill.
Cons
- Subject to daily token allowances and request per second (RPS) limits.
- Does not provide AI-generated answers or standalone extraction products.
- Usage is measured in tokens, requiring users to manage content length to stay within limits.
- New accounts start with a lower RPS limit (5 RPS).
Our take
LangSearch offers a robust and secure web search solution specifically tailored for AI agents, enabling them to gather factual, sourced information directly from the internet. Its free model makes it an accessible option for developers and researchers building agentic workflows.
Comments
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