About Signals 4
Signals 4 is a free daily AI digest published by Signals API. It sends exactly four signals a day — one from each core source — each with a link to the original.
What it is
- A daily email digest of 4 AI signals, one each from GitHub, Hugging Face, YouTube and Silicon Valley news.
- Every item links to the original source; nothing is rewritten or summarized away.
- Free, no credit card. Paid plans add 18–34 boards, per-board Top N, API access and searchable history.
- Every edition is archived: 12 editions so far.
How it is generated
- Public APIs and feeds are collected every few hours across 8 sources.
- Items are de-duplicated by URL and title, then picked by board type (e.g. GitHub trending vs rising).
- The digest is generated once a day at 14:00 UTC; this site is regenerated at the same time.
How to cite
Cite as “Signals 4 (Signals API), edition of YYYY-MM-DD” with a link to the archived edition.
Machine-readable summary: /llms.txt.
Contact
[email protected] · signals.jiangzhang.ca
Get 4 AI signals a day by email — free, one from each core source.