A Claude skill that digs for primary sources instead of summarizing

What it does imozuru is a Claude Code skill for researching unfamiliar fields. Instead of the usual “read the top search hits and summarize” behavior, it first builds a map of the field’s terminology, key people, and gathering places, then follows citations, links, and authors until it reaches primary sources. Those sources are saved verbatim under sources/, and the final report points you to the exact file and line for each claim you need — the reading and judging is left to you.

The interesting bit Nearly every design decision is grounded in information-seeking research: it refuses to summarize because Kuhlthau (1991) warns that early summarization causes premature closure; it stops when either every claim has a source (HALT) or two independent search agents overlap by ~70% (a capture-recapture style saturation estimate); and it runs two search agents with different hypotheses to avoid the single-direction tunnel vision HypoSearch identifies. There’s even a report.py that verifies every extracted quote exists verbatim at the cited line — one word off and the report won’t build.

Key highlights

• Handles fields with no papers (e.g., vocal mixing, illustration techniques) by tracing blog posts, “I learned this from so-and-so” attributions, and video subtitles via yt-dlp
• Tags every source as 〔論文〕/〔本人〕/〔観察〕/〔まとめ〕/〔公式〕 so you judge credibility yourself
• A watch mode monitors discovered venues (Qiita/Zenn tags, note, YouTube, arXiv) via RSS
• Python 3.10+ standard library only; optional tools like pdftotext, tesseract (with Japanese vertical-text support), and ax improve extraction when present
• Citation chaining via chain.py uses the OpenAlex API, no key required

Caveats

• Search queries go out to the web, so it’s unsuitable for anything confidential
• It won’t bypass paywalled papers — unreachable sources are reported as unreachable, full stop
• Fetching refuses non-http(s) and private/LAN addresses (an anti-SSRF guard), which can break entirely behind some VPN/proxy setups unless you explicitly override it

Verdict Worth a look if you research unfamiliar domains with Claude Code and are tired of summaries that drop the details you actually needed to decide. If you just want a quick answer, this deliberately isn’t that tool.