Linkup search

Linkup is a web search API for AI apps from Linkup Technologies, a French company. It searches its own index at four depths, from flash to deep, and can return raw results, an answer with its sources, or structured JSON, from infrastructure in the US, EU, Canada and APAC. On Opper, pin it with "engine": "linkup" and any tool-calling model searches through it, with no separate Linkup key, citations in your endpoint's shape and every search in your traces. Pick Jina or SearchBase instead when searches have to stay in the EU.

Use

Linkup searchwithin

Add Linkup search on Opper

Set up with agents

Paste this into your coding agent (Claude Code, Cursor, Codex, and more) and it will set up and build with Opper for you.

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Key info

Works on

Chat CompletionsResponsesMessagesGeminiSearch API

Region

US, EU, Canada, APAC

Pin it with

"engine": "linkup"

Citations

Per answer block

In your code

1curl https://api.opper.ai/v3/compat/chat/completions \
2  -H "Authorization: Bearer $OPPER_API_KEY" \
3  -H "Content-Type: application/json" \
4  -d '{"model": "openai/gpt-5.5",
5       "messages": [{"role": "user", "content": "What changed in the news today?"}],
6       "tools": [{"type": "opper:web_search", "engine": "linkup"}]}'