Codex85 began as a straightforward cataloguing exercise: observe what is present on the web across a defined set of subject areas, record it in a consistent format, and make the record openly accessible. The index is organised into twenty-two sections. Each section covers a distinct subject area — from health and finance to travel and technology — and contains links logged by domain, title, and brief description. The number of entries per section reflects how many sites were observed and submitted in that area, not any editorial prioritisation. Entries are added through the site's open submission form. Submitted sites are reviewed before being added to the index. The review checks that the submission matches the stated category and meets basic criteria for inclusion; it is not an endorsement of the site's quality, reliability, or commercial terms. The index uses a shared catalogue of approved entries. This means that a site listed here may also appear in other directories operating on the same catalogue structure. The category identifiers are consistent across the network, which allows for reliable cross-referencing. Codex85 is a reference tool, not a ranking system. It does not weight entries by traffic, domain authority, or any other metric. Every entry occupies the same position in the record — noted, categorised, and made accessible. The field notebook does not distinguish between specimens by prestige; it records what is present.