How Closelooknet publishes

AI-supported by design

Every piece of content on closelook.net is AI-supported. That is not a footnote — it is how this publication is built. Deterministic data is computed by purpose-built Cloudflare Workers from licensed market data feeds; research, structure, and prose are produced with Claude (Anthropic API); and the operation runs as a human–AI team with Thomas Look as the single human editor. Content operates in one of two modes:

Mode 1 — AI-assisted, human-reviewed. The editorial surfaces: Daily Pulse, Weekly Signal, newsletter articles (Substack mirror), Reports, Heresies, 101 entries, Morning 10 / Midday 10, and Strategies. AI drafts and structures; Thomas Look reviews, edits, and signs off before publication, and holds editorial responsibility for every word. These surfaces carry the “AI-assisted, human-reviewed” badge in the byline. Under Article 50(4) of the EU AI Act, text that has undergone human review with editorial responsibility held by a natural or legal person is exempt from AI-labeling requirements — the badge is voluntary transparency, not a legal obligation.

Mode 2 — fully automated. A defined set of surfaces is generated and published by Closelook’s systems without pre-publication human review — see the full list below. Each of those pages carries an explicit “AI-generated” note.

Per Google’s guidance on AI-generated content, the test we apply is EEAT through human accountability: a real person designs every system, stands behind the publication, and holds editorial responsibility for reviewed content — regardless of whether the first draft came from a model.

Fully automated surfaces (AI-generated)

The following surfaces are AI-generated and published automatically, without pre-publication human review. This disclosure is made under Article 50(4) of the EU AI Act (applicable from 2 August 2026); each of these surfaces also carries an inline “AI-generated” note:

• On That Day in Markets — quiz editions, generated twice weekly with schema validation.
• The Wire — plain-English market movement explainers.
• Analyst Wire — analyst-action summaries.
• Earnings Wire — earnings-reaction summaries.
• Tape feed — the prose on price-action cards.
• Glossary entries — reference definitions.
• predictions.closelook.net — the predictions companion site.

The design of these systems — methodology, prompts, validation rules, and data pipelines — is human work, and systematic errors are corrected at the system level under the corrections policy below. Purely deterministic outputs (index values, signal scores, lab boards, charts) are algorithmic computation from licensed market data, not AI-generated text.

Data sources

All market data is sourced from licensed feeds and surfaced through the Closelook Data Lake (~1,210 tracked tickers, refreshed nightly):

• EODHD — primary EOD bars for US, European, and most Asian markets.
• J-Quants — primary feed for Japanese equities (JPX). EODHD has no Japan coverage; J-Quants is the only correct source.
• Yahoo Finance — fallback for specific edge cases (Korean “.KS” tickers, UK trailing-dot tickers, India NSE merger-transition tickers).
• FRED — macroeconomic time series.
• Finnhub — earnings calendars and select fundamentals.
• Alpha Vantage — supplementary intraday quotes.

Index methodology is published on each index page (Rubin, HALO, AW40, Euro-AI). Pattern Engine methodology is at signals/scanner. The Lab Reads section publishes the underlying research papers for each pattern.

Fact-checking and review

For data-line content (Pulse, Weekly, Newsletter), the deterministic calculations are auditable from source — we publish the input ticker list and the methodology for every composite. The narrative prose layer is reviewed by Thomas before publish; any figure that appears in narrative form is cross-checked against the underlying data block in the same article.

For long-form research (Reports, Heresies), every numeric claim cites either an internal Closelook framework page or a primary source. We do not summarize sources we have not read.

A daily automated health check (cowork/daily_health_check/) monitors data freshness and worker pipeline integrity. Failures open a GitHub issue tagged health-alert and block publishing until resolved.

Corrections policy

If a factual error is identified after publication, the correction is applied to the original page and a Corrections note is appended at the top of the article explaining what changed and when. The article’s dateModified in the schema is updated to the correction timestamp. We do not silently edit history.

To report a correction: email [email protected] with the article URL and the disputed claim.

Investment-diary framing

Every piece of content on closelook.net is published under an investment-diary framing: it describes positions taken, frameworks used, and decisions made in the operator’s own portfolios. It is not, and must not be read as, personalized investment advice. Closelook Venture GmbH is not a registered investment adviser in any jurisdiction.

Where vehicles are mentioned (ETFs, individual tickers, options structures), the framing is educational — “common vehicles for this exposure include X, Y, Z” — not directive. Readers are solely responsible for their own investment decisions.

Full legal terms are at /terms/. The responsible-person details per § 18 Abs. 2 MStV (German Interstate Media Treaty) and the company commercial register are at /imprint/.

Position disclosure

Thomas Look holds positions in many of the securities discussed in Closelook research. The five live portfolios are published at /portfolios/ with full constituent-level transparency — readers can see exactly what is held when reading any framework or thesis. Where a specific ticker is the subject of a piece, the position (if any) is disclosed inline.

Policy updates

This page is versioned with the rest of the closelook.net source in the closelooknet repository. Substantive changes are dated; the latest revision is 2026-08-02 (EU AI Act Article 50 alignment: universal AI-support disclosure, fully-automated surface list, site-wide footer statement). Initial publication 2026-05-21.