the phone-home register
SGLang
What SGLang sends out of your computer by default, when, to whom, and the switch that stops it, version by version, with how we know.
The answer
SGLang's own network calls were not audited: a name search of its code at v0.5.20 for telemetry, usage_stats, posthog, DO_NOT_TRACK and sentry_sdk found nothing (its 'telemetry' hits are OpenTelemetry tracing, off unless configured); it pins FlashInfer 0.6.18, whose kernel download at the next release has its own row.
Builds and versions
not installed: a code search at tag v0.5.20On by default?not read · a keyword search found nothingMeasured here?no · read in codeDate checked (UTC)2026-10-01
- Version
- 0.5.20 · the source at tag v0.5.20
- Where the evidence came from
- not run: the source applies to Linux
- On by default?
- not read · a keyword search found nothing
- Measured here?
- no · read in code
- Date checked (UTC)
- 2026-10-01
- Why we say so
- a name search of python/sglang for telemetry, usage_stats, posthog, DO_NOT_TRACK and sentry_sdk (the 'telemetry' hits are OpenTelemetry tracing, off unless configured); not an audit of its network calls
Each call out
Not read · 0.5.20
- Version · build
- 0.5.20 · the source at tag v0.5.20 · not run: the source applies to Linux · not installed: a code search at tag v0.5.20
- Sends by default
- not read · a keyword search found nothing
- Also know
- It pins FlashInfer 0.6.18, whose kernel download at the next release, 0.6.18.post1, is its own row. — github.com · pyproject.toml, read 2026-10-10
- Grade and method
- read · a name search of python/sglang for telemetry, usage_stats, posthog, DO_NOT_TRACK and sentry_sdk (the 'telemetry' hits are OpenTelemetry tracing, off unless configured); not an audit of its network calls · read 2026-10-01
- Receipts
- the source at tag v0.5.20
The switch
No switch found.
Listens beyond the machine, and other cloud features
Listens beyond the machine by default
- not covered: no vendor document of its default bind read (0.5.20 the source at tag v0.5.20)
Other cloud features
None found.
What it leaves on disk
Nothing we know of.
Brings in, and installed for you by
None on the register.
Vendor documents it? · public discussion
Vendor documents it?
No call to document.
Public discussion
History
No dated changes yet.
Not yet checked
Nothing named.