---
name: linkup
description: "Web search and content fetching using Linkup extension. Use when needing to search the web, get answers to questions with sources, or fetch content from specific URLs. Provides three tools: linkup_web_search (discovery), linkup_web_answer (direct answers), linkup_web_fetch (URL content extraction)."
---

# Linkup Extension

Web search and content fetching tools powered by Linkup API.

## Tools

### linkup_web_search

Search the web and get sources with content snippets.

```
linkup_web_search(query: string, depth?: "fast" | "standard" | "deep", limit?: number)
```

- `query`: Be specific and detailed. Include context like dates, locations, company names.
- `depth`: Search depth mode. Default: "standard".
  - `fast`: Sub-second latency, uses pre-indexed "atoms of information". Best for quick facts and simple lookups.
  - `standard`: Single iteration retrieval. Balanced speed and depth for most queries.
  - `deep`: Up to 10 iterations with chain-of-thought reasoning. Best for complex multi-step research (slower).
- `limit`: Maximum number of results. Default: 10.

Search result content is truncated per result. If a result is truncated, the tool output includes a temp file path with the full result content.

**Use when:** Discovering information across multiple sources, researching topics, comparing perspectives.

### linkup_web_answer

Get a synthesized answer with source citations.

```
linkup_web_answer(query: string, depth?: "fast" | "standard" | "deep")
```

- `query`: Be specific and detailed.
- `depth`: Same depth modes as `linkup_web_search`. Default: "standard".

The answer and source snippets are truncated independently. If any block is truncated, the tool output includes a temp file path with the full block content.

**Use when:** Need a direct answer to a specific question, quick facts with citations.

### linkup_web_fetch

Fetch content from a URL as clean markdown.

```
linkup_web_fetch(url: string, renderJs?: boolean)
```

- `url`: The URL to fetch.
- `renderJs`: Set false for static pages (faster). Default: true.

Fetched markdown is truncated when large. If it is truncated, the tool output includes a temp file path with the full markdown content.

**Use when:** Reading documentation, following up on search results, extracting content from known URLs.

## Tool Selection

| Need | Tool |
|------|------|
| Find information across sources | `linkup_web_search` |
| Get a direct answer with sources | `linkup_web_answer` |
| Read content from a known URL | `linkup_web_fetch` |

## Query Formulation

**Good queries are specific:**

| Bad | Good |
|-----|------|
| "Microsoft revenue" | "Microsoft fiscal year 2024 total revenue" |
| "React hooks" | "React useEffect cleanup function best practices" |
| "AI news" | "OpenAI announcements January 2026" |

**Add context:**
- Time: "2025", "last quarter", "since version 5.0"
- Location: "French company Total", "US market"
- Specifics: company names, version numbers, exact terms

## Depth Mode Selection

**Fast:** Sub-second responses for quick facts, simple lookups, known facts.

**Standard (default):** Single iteration, balanced speed/depth for most queries.

**Deep:** Complex research, multi-step queries, comprehensive coverage needed.

```
// Fast - instant facts, sub-second
linkup_web_search("Node.js 22 release date", depth: "fast")

// Standard - balanced, one search iteration
linkup_web_search("React useEffect cleanup best practices")

// Deep - complex research, multiple iterations
linkup_web_search("comparison of Rust web frameworks performance benchmarks 2025", depth: "deep")
```

## Common Patterns

### Research workflow
1. `linkup_web_search` to discover sources
2. `linkup_web_fetch` on promising URLs for full content

### Quick facts
1. `linkup_web_answer` for direct answer with citations

### Documentation reading
1. `linkup_web_fetch` on known documentation URL

## Commands

- `/linkup:balance` - Check remaining API credits