Available headers
The HTTP headers Letakof sends with a subscription request and reads from the response.
Header names are compared without regard to case. A value in the form base64:… is decoded only for profile-title and announce. For the letakof-* headers see Additional headers.
Request headers
Sent to the subscription address.
| Header | Purpose | Default | Can Be Disabled |
|---|---|---|---|
User-Agent |
Client and version, Letakof/<version> |
Always sent | No |
Accept |
*/*, so a panel does not take the request for a browser |
Always sent | No |
Cache-Control |
no-cache (Windows only) |
Always sent | No |
x-hwid |
Hashed device identifier, 16 hexadecimal characters | Sent | Yes: Send HWID |
x-device-os |
Windows, macOS, iOS or Android |
Sent | Yes: Send HWID |
x-ver-os |
OS version, such as 10.0.22631, 14.5.0, 26.0.1 or 14 |
Sent | Yes: Send HWID |
x-device-model |
Device model, such as MacBook Air (M2, 2022) or iPhone 17 Pro | Sent | Yes: Send HWID |
The four x- headers are sent together or not at all: Settings → Subscription and HWID → Send HWID. More in Device identifier (HWID).
For providers. If your panel picks the response format by client name, make a rule so that a User-Agent starting with Letakof/ receives Clash/Mihomo YAML. Otherwise the panel may answer with a base64 list, which Letakof cannot load.
Response headers
Sent by the provider and read by Letakof.
| Header | Purpose | Default | Can Be Disabled |
|---|---|---|---|
profile-title |
Subscription name; without it, the file name or the host of the link | Always read | No |
profile-update-interval |
Hours between automatic updates, minimum 1 | Used unless you choose another interval | Yes: Refresh interval |
subscription-userinfo |
upload, download, total in bytes (0 is no limit) and expire as Unix time |
Always read | No |
subscription-refill-date |
When traffic resets, Unix time | Always read | No |
support-url |
Address of the Support button, http or https only |
Always read | No |
profile-web-page-url |
Address of the Account button, http or https only |
Always read | No |
announce |
Announcement on the Home screen | Always read | You can dismiss it |
profile-logo |
Provider logo, https, up to 1.5 MB, downloaded once |
Always read | No |
content-disposition |
Fallback name from filename |
Always read | No |
On Android TV the announcement and the links are not shown.
Found a mistake? Open an issue on GitHub.