#1232·reader

Arbitrary "x-site" header behaviour for jina-search

Author: ly000Created Dec 9, 2025Updated Jan 4, 2026

Hey everyone. i have an issue understanding the in-site search of jina.

running following search:

bash
curl --location 'https://s.jina.ai/' \
--header 'Authorization: Bearer xxxx' \
--header 'Content-Type: application/json' \
--header 'X-Respond-With: no-content' \
--header 'X-Timeout: 60' \
--header 'Accept: application/json' \
--header 'X-No-Cache: true' \
--data '{
    "q": "Please find the latest news about technological developments of the small startup Lilium"
}'

results in this response.

{
    "code": 200,
    "status": 20000,
    "data": [
        {
            "title": "Lilium News and Updates - Newsroom and Media Kit",
            "url": "https://lilium.com/news",
            "description": "05.12.2024 - Media Release. Lilium GmbH reports continuing momentum on the Lilium Jet commercial and test program, as KPMG-driven M&A process continues.",
            "content": "",
            "usage": {
                "tokens": 1000
            }
        },
        {
            "title": "Technology of the now-defunct electric aircraft startup Lilium has ...",
            "url": "https://www.techi.com/archer-acquires-lilium-patents-electric-aircraft-future/",
            "description": "Archer Aviation acquires Lilium's patents for €18 million, gaining access to key technologies in electric flight.",
            "date": "Oct 17, 2025",
            "content": "",
            "usage": {
                "tokens": 1000
            }
        },
        {
            "title": "Defunct electric aircraft startup Lilium's tech lives on over at Archer",
            "url": "https://techcrunch.com/2025/10/16/defunct-electric-aircraft-startup-liliums-tech-lives-on-over-at-archer/",
            "description": "Lilium, which was founded in 2015, was developing a vertical take-off and landing aircraft with speeds of up to 100 km/h. The company raised ...",
            "date": "Oct 16, 2025",
            "content": "",
            "usage": {
                "tokens": 1000
            }
        },
        {
            "title": "Archer Snags Lilium's Tech in $21M Patent Acquisition",
            "url": "https://www.techbuzz.ai/articles/archer-snags-lilium-s-tech-in-21m-patent-acquisition",
            "description": "Archer Aviation won a competitive bid to acquire all 300 of Lilium's patent assets for €18 million ($21 million).",
            "date": "Oct 17, 2025",
            "content": "",
            "usage": {
                "tokens": 1000
            }
        },
        {
            "title": "Inside the advanced air mobility market - YouTube",
            "url": "https://www.youtube.com/watch?v=jR14XgJaEmc",
            "description": "Welcome to FlightGlobal Focus, your new essential podcast for trusted aviation insight. We publish new episodes twice weekly: join us on ...",
            "date": "Nov 2, 2025",
            "content": "",
            "usage": {
                "tokens": 1000
            }
        },
        {
            "title": "Lilium Phoenix (defunct) - eVTOL.news",
            "url": "https://evtol.news/lilium/",
            "description": "Article: Lilium unveils five-seater air taxi prototype after a successful maiden flight for its latest jet, Tech Crunch, May 15, 2019; Video: The Lilium Jet ...",
            "content": "",
            "usage": {
                "tokens": 1000
            }
        },
        {
            "title": "We've acquired Lilium's patent portfolio, which includes - Facebook",
            "url": "https://www.facebook.com/FlyArcher/posts/weve-acquired-liliums-patent-portfolio-which-includes-300-patents-this-portfolio/1134665565434932/",
            "description": "This portfolio covers innovations in eVTOL technology including ducted fans, propeller systems, high-voltage systems, battery management, ...",
            "date": "Oct 15, 2025",
            "content": "",
            "usage": {
                "tokens": 1000
            }
        },
        {
            "title": "Lilium Air Mobility - Lilium",
            "url": "https://lilium.com/",
            "description": "Lilium is developing sustainable, high-speed air mobility through its electric vertical take-off and landing aircraft, vertiports and digital service.",
            "content": "",
            "usage": {
                "tokens": 1000
            }
        },
        {
            "title": "LILM News Today | Why did Lilium stock go up today? - MarketBeat",
            "url": "https://www.marketbeat.com/stocks/NASDAQ/LILM/news/",
            "description": "What's going on at Lilium (NASDAQ:LILM)? Read today's LILM news from trusted media outlets at MarketBeat.",
            "content": "",
            "usage": {
                "tokens": 1000
            }
        },
        {
            "title": "Lilium N.V. (LILMF) Latest Stock News - Seeking Alpha",
            "url": "https://seekingalpha.com/symbol/LILMF/news",
            "description": "Air taxi startup Lilium finds a buyer, stock skyrockets 268% · Wed, Dec. 25, 2024 ; Lilium launches M&A process with KPMG · Tue, Nov. 05, 2024 ; Lilium N.V. ...",
            "content": "",
            "usage": {
                "tokens": 1000
            }
        }
    ],
    "meta": {
        "usage": {
            "tokens": 10000
        }
    }
}

i assumed, that i can search a particular domain by setting the x-site header via:

bash
curl --location 'https://s.jina.ai/' \
--header 'Authorization: Bearer xxxx' \
--header 'Content-Type: application/json' \
--header 'X-Respond-With: no-content' \
--header 'X-Timeout: 60' \
--header 'Accept: application/json' \
--header 'X-No-Cache: true' \
--header 'X-Site: https://www.lilium.com' \
--data '{
    "q": "Please find the latest news about technological developments of the small startup Lilium"
}'

however this does not work:

{
    "data": null,
    "code": 422,
    "name": "AssertionFailureError",
    "status": 42206,
    "message": "No search results available for query Please find the latest news about technological developments of the small startup Lilium site:https://www.lilium.com",
    "readableMessage": "AssertionFailureError: No search results available for query Please find the latest news about technological developments of the small startup Lilium site:https://www.lilium.com"
}

How should the x-site actually behave?