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HTTP dump of Libre Link Up used in combination with FreeStyle Libre 3
@kanomade
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Am I likely to get an error or refused connection if I don't cache the token, but re-request it on every request, lets say every 5 min?

@sgmoore
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sgmoore commented Dec 16, 2024

/llu/connections/{patientId}/graph only gives me one measurement. Are you saying that it should return me all available measurements?

You may be looking at the wrong bit of the result. Details are at the very end of this original gist (before all the comments)
Specifically these bits :

The last measurement is present in glucoseMeasurement:

Instead you can find historical measurements in graphData. The data has the same shape as above.

@kanomade
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In data.connection.glucoseMeasurement, there is FactoryTimestamp and Timestamp. Neiither of them correspond to either local time or UTC. Local time is 11:31AM and I get:
FactoryTimestamp: '12/14/2024 10:46:21 AM',
Timestamp: '12/14/2024 11:46:21 AM',
So it looks like Timestamp is UTC, and FactoryTimestamp is closer to local time, but showing a reading 45 minutes ago. Can anyone shed some light on this???

@kanomade
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/llu/connections/{patientId}/graph only gives me one measurement. Are you saying that it should return me all available measurements?

You may be looking at the wrong bit of the result. Details are at the very end of this original gist (before all the comments) Specifically these bits :

The last measurement is present in glucoseMeasurement:

Instead you can find historical measurements in graphData. The data has the same shape as above.

Graph data is showing as empty, like this in the JSON:

"graphData":[]

@adamlounds
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adamlounds commented Dec 16, 2024 •
edited
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Am I likely to get an error or refused connection if I don't cache the token, but re-request it on every request, lets say every 5 min?

No, you'll be fine. It's just better/friendlier to cache the token if you can.

Is your sensor talking to your phone correctly? If you use the LibreView app, what is the latest data it shows?

@earlgraycz
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Hi Guys,

Does anyone know how to properly detect if an app is without a sensor signal? For example at a long distance for bluetooth?

Thank you.

@Mohmedsabry
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when i use https://api-eu.libreview.io/llu/connections i get a empty date [] and i tried https://api-eu.libreview.io/llu/connections/(user_id as sha256)/graph get message MissingCachedUser

@Mohmedsabry
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Hi All, I could use some help, for some reason I can query the data without issue in Postman, but when I copy the code from postman to xampp and try running the code, I get a cloudflare error, any assistance would be greatly appreciated.

Postman results: image Copy code from Postman: image PHP code in xampp results: image

To reiterate, code is identical between Postman and PHP script in XAMPP

what is headers required

@sgmoore
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sgmoore commented Dec 23, 2024

when i use https://api-eu.libreview.io/llu/connections i get a empty date []

I presume you mean you get empty data. That usually means that you do not have any followers/connections which in turn means you have not followed yourself. (This confusing step is required as LibreLinkUp was designed for other people to see your data, not for you to see your own data, so the workaround is to add yourself as a follower to your own main account)

and i tried https://api-eu.libreview.io/llu/connections/(user_id as sha256)/graph get message MissingCachedUser

It should be patientId (not user id) and you get this information from data returned by https://api-eu.libreview.io/llu/connections. So if you don't have any followers/connections I don't know what id you are using.

what is headers required

This is a snippet of my C# code. This works for me even though it has not been changed to include the header mentioned by gui-dos , namely

A new "Account-Id" HTTP header is now required, passing the SHA256 digest of a user's id as a 64-char hexadecimal string.

Also I'm still using version 4.7 but others have said they need to use version 4.12.0

    var request = new HttpRequestMessage
	{
		Method = method,
		RequestUri = new Uri(url),
		Headers =
		{
			{ "product"         , "llu.android"         },
			{ "version"         , "4.7"                 },
			{ "Accept"          , "application/json"    },
			{ "cache-control"   , "no-cache"            },
			{ "accept-encoding" , "gzip"                },
			{ "connection"      , "Keep-Alive"          },
			{ "user-agent"      , "Mozilla/5.0 (Windows NT 10.0; rv:129.0) Gecko/20100101 Firefox/129.0" }
		}
	};

	if (!String.IsNullOrEmpty(token))
		request.Headers.Add("Authorization", $"Bearer {token}");

@Mohmedsabry
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Mohmedsabry commented Dec 23, 2024 •
edited
Loading

when i use https://api-eu.libreview.io/llu/connections i get a empty date []

I presume you mean you get empty data. That usually means that you do not have any followers/connections which in turn means you have not followed yourself. (This confusing step is required as LibreLinkUp was designed for other people to see your data, not for you to see your own data, so the workaround is to add yourself as a follower to your own main account)

and i tried https://api-eu.libreview.io/llu/connections/(user_id as sha256)/graph get message MissingCachedUser

It should be patientId (not user id) and you get this information from data returned by https://api-eu.libreview.io/llu/connections. So if you don't have any followers/connections I don't know what id you are using.

what is headers required

This is a snippet of my C# code. This works for me even though it has not been changed to include the header mentioned by gui-dos , namely

A new "Account-Id" HTTP header is now required, passing the SHA256 digest of a user's id as a 64-char hexadecimal string.

Also I'm still using version 4.7 but others have said they need to use version 4.12.0

    var request = new HttpRequestMessage
	{
		Method = method,
		RequestUri = new Uri(url),
		Headers =
		{
			{ "product"         , "llu.android"         },
			{ "version"         , "4.7"                 },
			{ "Accept"          , "application/json"    },
			{ "cache-control"   , "no-cache"            },
			{ "accept-encoding" , "gzip"                },
			{ "connection"      , "Keep-Alive"          },
			{ "user-agent"      , "Mozilla/5.0 (Windows NT 10.0; rv:129.0) Gecko/20100101 Firefox/129.0" }
		}
	};

	if (!String.IsNullOrEmpty(token))
		request.Headers.Add("Authorization", $"Bearer {token}");

thank you i tried your code and it fails after login just add Account-id header it works fine and upgrade version to 4.12 it must

@samuele4414
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hi i have some problem while getting the data from this code
async function getConnections() {
try {
console.log("DIO DI CHIAMATA COLLECTIONS CHE NON FUNZIONA", ACCOUNT_ID);
const response = await fetch(${API_BASE_URL}/llu/connections, {
method: "GET",
headers: {
...HEADERS,
Authorization: Bearer ${AUTH_TOKEN},
"account-id": ACCOUNT_ID
}
});

const data = await response.json();

if (data.message && data.message === "AccountIdMismatch") {
  throw new Error("Account ID does not match");
}

} catch (error) {
console.error("❌ Errore", error.message);
return null;
}
}

i'm able to login with this code

async function login() {
try {
const response = await fetch(${API_BASE_URL}/llu/auth/login, {
method: "POST",
headers: HEADERS,
body: JSON.stringify({
email: CREDENTIALS.email,
password: CREDENTIALS.password
})
});

const text = await response.text();
console.log("🔍 Risposta ricevuta:", text);

const data = JSON.parse(text);

if (data.status !== 0 || !data.data.authTicket) {
  throw new Error("Login fallito. Controlla le credenziali.");
}

AUTH_TOKEN = data.data.authTicket.token;
ACCOUNT_ID = data.data.user.id;
console.log("✅ Token ottenuto:", AUTH_TOKEN);
console.log("✅ Account ID:", ACCOUNT_ID);

} catch (error) {
console.error("❌ Errore nel login:", error.message);
}
}

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