> ## Documentation Index
> Fetch the complete documentation index at: https://docs.linkup.so/llms.txt
> Use this file to discover all available pages before exploring further.

# Introduction

> The production-grade web search API for AI.

Learn how to build with Linkup by pasting this prompt to your agent:

```text theme={"system"}
Read https://github.com/LinkupPlatform/linkup-for-agents
and follow the Linkup agent instructions to set up Linkup for this project.
```

Linkup is the production-grade web search API for AI. Teams at Legora, Polymarket,
Cohere, McKinsey, and SNCF ship production AI on Linkup because four things have
to be true:

* **Accuracy.** [**Search**](/pages/documentation/endpoints/search/overview) ranks #1 among sub-second web search APIs on Verified SimpleQA with a 94% F-score. [**Research**](/pages/documentation/endpoints/research/overview) ranks #1 across the board on SealQA-0 with 61% accuracy. The [evaluation harness](https://github.com/LinkupPlatform/eval-simpleQA) is open source.
* **Customization.** The index adapts to your domain. Define which sources to trust, which domains to prefer, which proprietary data to blend in.
* **Security.** SOC 2 Type II, Zero Data Retention, GDPR, and Single Sign-On on every tier. Bring Your Own Cloud is available for the highest data sovereignty requirements: the full Linkup index runs inside your VPC and queries never leave your environment.
* **Latency.** [**Search**](/pages/documentation/endpoints/search/overview) starts under 200 ms with Flash (Alpha). Fast enough for voice AI, sales copilots, and live research tools.

## Our endpoints

Linkup exposes five endpoints. Each has a distinct shape and is tuned for a
different point on the latency/quality curve.

| Endpoint | Shape | Latency | Mode | Use when |
| - | - | - | - | - |
| [**Search**](/pages/documentation/endpoints/search/overview) | Query → ranked URLs, sourced answer, or structured JSON | Flash (Alpha): \<200 ms; other modes: \~1–30s | sync | Grounding an agent or LLM answer with retrieved web context |
| [**Fetch**](/pages/documentation/endpoints/fetch/overview) | URL → clean LLM-ready markdown, optionally typed JSON | \~1s | sync | Extracting the full content of a known page, or typed JSON from that page |
| [**Research**](/pages/documentation/endpoints/research/overview) | Query → detailed report or precise answer with inline citations | 2–20 min | async | Multi-source synthesis, full reports, precise answers |
| [**Tasks**](/pages/documentation/endpoints/tasks/overview) | Batch of up to 100 Search/Fetch/Research calls → results for each | 1s–20 min | async | Bulk, scheduled, or background workloads |
| [**Extract**](/pages/documentation/endpoints/extract/overview) | Seed URL + query → downloadable structured rows | Variable | async | Repeated records on a known page, such as products, jobs, or directories |

<Note>
  **Extract** is in closed beta and access is granted by request. Behavior
  and parameters may change.
</Note>

## Where to next

<CardGroup cols={2}>
  <Card title="Quickstart" icon="forward" href="/https/docs.linkup.so/pages/documentation/get-started/quickstart">
    Make your first call in five minutes.
  </Card>

  <Card title="For AI agents" icon="robot" href="/https/docs.linkup.so/pages/documentation/get-started/for-agents">
    Tool definitions and integration prompts for coding agents.
  </Card>

  <Card title="Playground" icon="play" href="https://app.linkup.so/playground">
    Test Linkup in the browser.
  </Card>

  <Card title="API reference" icon="code" href="/https/docs.linkup.so/pages/documentation/endpoints/search/reference">
    Full parameter spec for every endpoint.
  </Card>
</CardGroup>

<Tip>
  Query precision is the biggest lever on result quality. Read the
  [Search best practices](/pages/documentation/endpoints/search/best-practices)
  page or use the [Prompt Optimizer](https://prompt.linkup.so).
</Tip>


This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.