File System

Unix-shell-style nav over parsed documents and the cross-doc memory store.

POST /v3/fs is a single op-driven endpoint designed for LLM agents and programmatic consumers that want to walk a corpus the way they'd walk a filesystem.

Doc-level ops (every parsed document)

• ls — list parsed documents with rich per-doc metadata.
• cat — read one doc's parse JSON, sliced (range) or projected (select).
• head — first N sections of one doc.
• grep — substring or regex search; scope, path, countOnly available.
• stat — metadata only (page/section/entity counts, timestamps).

Memory-level ops (require linkAcrossDocuments: true on the parse function)

• find — list canonical entities across the corpus.
• open — entity + mentions.
• xref — for one entity, sections across docs that mention it (with content).

Memory ops return an empty list with a hint when no docs in this environment have been memory-linked.

Pagination

List ops paginate by cursor — pass the previous response's nextCursor back as cursor; hasMore: false signals the last page. Same idiom as /v3/calls and /v3/outputs.