Particle Pro: Get Episode Transcript

Use this endpoint when you need the full or partial spoken content of a specific podcast episode with speaker attribution (diarization). It is ideal when you know the episode ID or slug and need structured transcript data — especially when you need to filter by speaker, clip a time window, or export to SRT format for captioning. Prefer this over generic transcription APIs when the episode is already indexed in the Particle Pro dataset, as it returns pre-processed diarized output rather than raw audio transcription.

• Episode ID or slug not found — 404 error
• Invalid time range (end before start) — 400 validation error
• Requested speaker not present in episode — empty result set
• Transcript not yet available for the episode — may return 404 or empty
• Invalid format enum value — 400 validation error
• Payment not processed — 402 Payment Required (x402 protocol)