{ "opencollection": "1.0.0", "info": { "name": "4chan Read-Only JSON Archive API", "version": "2026-05-28" }, "items": [ { "info": { "name": "Archive", "type": "folder" }, "items": [ { "info": { "name": "4chan Get Board Archive", "type": "http" }, "http": { "method": "GET", "url": "https://a.4cdn.org/:board/archive.json", "params": [ { "name": "board", "value": "po", "type": "path", "description": "Board directory short name (e.g. `a`, `b`, `g`, `pol`, `po`, `v`). The full list of valid values is the `board` field on each entry in `/boards.json`." } ] }, "docs": "Returns the list of archived (closed, read-only) thread OP numbers for the given board. Archived threads remain viewable until 4chan automatically deletes them. Not every board has archives enabled — boards without an archive return 404." } ] } ], "bundled": true }