561 Group Research Library

This is the 561 Group research library: a read-only topical archive of roughly 83,000 files organized under nine closed UDC-aligned root topics. Paths are claims about what material is about; branch roles (archive, bibliography, explanations, specifications, terms) describe what each branch holds.

Agents: prefer the JSON API for machine use. Every HTML page here also negotiates application/json via the Accept header, and the full archive API remains mounted verbatim under /api and /raw/.

Query Scope path (optional, e.g. topical-archive/science) Result limit (max 500) Max entries scanned (max 100000) Search

Root topics

• applied-sciences
• arts
• geography-history
• information
• language-literature
• philosophy
• religion
• science
• social-sciences

Machine endpoints

• /api — endpoint manifest
• /api/grammar — path grammar, branch roles, taxonomy id fields
• /taxonomies — taxonomy vocabularies (Turtle)