Question 1

Is 12306 or Sem better?

Accepted Answer

12306 scores 72.0 and Sem scores 69.0 on the tashan score, which measures upkeep and freshness gated by real adoption. Neither number is a security audit and neither can be bought. The gap is narrow, so compare the evidence rather than the headline.

Question 2

Are 12306 and Sem safe to install?

Accepted Answer

12306: no known advisories, no build provenance. Sem: no known advisories, runs an install script, no build provenance. Every capability tashan measures is checked against the OSV advisory database at the version you would install today, for install-time scripts and for build provenance. The audit reads public evidence and never executes anything.

Question 3

How were these two compared?

Accepted Answer

Both were measured on the same day by the same scorer, from public signal only — npm download volume and publish cadence, repository activity, maintainer count and registry status. Nobody can pay to change a score, a rank or a listing.

	12306	Sem	what it means
tashan score	72	69	upkeep + freshness, gated by adoption
Adoption evidence	7k/wk	4k/wk	the raw public signal the score came from
Last release	active	active	npm publish or repo push
Upkeep	69	70	cadence, maintainers, status
Expertise grade	not graded	deep	an LLM read of its own documentation against a fixed rubric
Security audit	no known advisories, no build provenance	no known advisories, runs an install script, no build provenance	a summary — the full audit, free, is on each dossier
Licence	—	MIT OR Apache-2.0
Maintainers	one primary	one primary	bus-factor risk

12306 vs Sem

Install either