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bookhoard/docs/developer/api/media-items/set_audio_speed.md
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John O'Keefe 4a6fb033cb docs(media-items): Work Order 3 batch 3b — management endpoints (8)
New frontmatter'd docs:
- download (ServeFile — raw bytes, family-lens enforced; corrects the old
  download doc's claim that no download route is registered: ServeFile IS
  routed, DownloadBook is the dead code)
- set_audio_speed (speed range 0.25-4.0, NaN/Inf rejected)
- rescan (abridged example over the full 70+-column row; write-after-success
  guarantee noted)
- purge-archived (destructive, admin), unarchive (204), merge (SHA-256
  precondition, per-user collisions keep active copy)
- facets (two modes: facet+values, field autocomplete counts)
- filter_count (family lens)

Registry: RawMessage pins for map/abridged responses; Schema{} for non-JSON
body routes (download = raw bytes; unarchive = 204). Audit now:
missing docs down to ~55 (from 112), 0 orphans.
2026-10-24 15:06:23 -04:00

911 B
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method, path, auth, area
method path auth area
PUT /api/media-items/:id/audio-speed jwt media-items

Set Audio Speed

Persists the audiobook playback speed for the signed-in user on one media item. Speed must be within 0.25–4.0 (NaN/Inf rejected).

Example request

{
  "speed": 1.5
}

Example response

{
  "playback_speed": 1.5
}

Errors

Status Body When
400 {"error": "invalid media item id"} / {"error": "invalid request"} / {"error": "speed out of range"} malformed or out-of-range
401 {"error": "authentication required"} / {"error": "invalid user"} no/invalid auth
404 {"error": "book not found"} no such media item
500 {"error": "failed to save playback speed"} unexpected server error