> ## Documentation Index > Fetch the complete documentation index at: https://docs.particle.pro/llms.txt > Use this file to discover all available pages before exploring further. # Poll the episode feed > Resumable, strictly-ordered poll of episodes as they are ingested — the all-plans pull alternative to the Enterprise stream. Subscribe to a milestone (default transcribed); each call returns episodes that reached it since your cursor, in ingestion order, with a cursor to poll again. Optionally filter by podcast_ids, topic_ids, and/or popularity_threshold. ## OpenAPI ````yaml /openapi.json get /v1/podcasts/episodes/feed openapi: 3.1.0 info: description: Public API for Particle — news intelligence, financial data, and analysis. title: Particle API version: 0.1.0 servers: - url: https://api.particle.pro security: - ApiKeyHeader: [] - BearerAuth: [] paths: /v1/podcasts/episodes/feed: get: tags: - Podcast Episodes - tier:standard summary: Poll the episode feed description: >- Resumable, strictly-ordered poll of episodes as they are ingested — the all-plans pull alternative to the Enterprise stream. Subscribe to a milestone (default transcribed); each call returns episodes that reached it since your cursor, in ingestion order, with a cursor to poll again. Optionally filter by podcast_ids, topic_ids, and/or popularity_threshold. operationId: feed-episodes parameters: - description: >- Deliver episodes once they reach this ingestion stage. Ordered discovered < transcribed < segmented < fully_ingested. explode: false in: query name: milestone schema: default: transcribed description: >- Deliver episodes once they reach this ingestion stage. Ordered discovered < transcribed < segmented < fully_ingested. enum: - discovered - transcribed - segmented - fully_ingested type: string - description: >- Filter to a set of podcasts by slug or ID (comma-separated). Hard limit of 100 per request. Unknown values are ignored; if no filter matches any podcast you get a 404. Always included over popularity_threshold. explode: false in: query name: podcast_ids schema: description: >- Filter to a set of podcasts by slug or ID (comma-separated). Hard limit of 100 per request. Unknown values are ignored; if no filter matches any podcast you get a 404. Always included over popularity_threshold. items: type: string maxItems: 100 type: - array - 'null' - description: >- Filter to the most-popular podcasts whose popularity percentile is at least this value, in (0,1). The feed covers at most 100 podcasts total: your podcast_ids plus the most-popular podcasts above this threshold, with the least-popular trimmed to fit. For an uncapped popularity stream, use the Enterprise stream endpoint. explode: false in: query name: popularity_threshold schema: description: >- Filter to the most-popular podcasts whose popularity percentile is at least this value, in (0,1). The feed covers at most 100 podcasts total: your podcast_ids plus the most-popular podcasts above this threshold, with the least-popular trimmed to fit. For an uncapped popularity stream, use the Enterprise stream endpoint. exclusiveMaximum: 1 format: double minimum: 0 type: number - description: >- Scope the feed to one or more topics (comma-separated): each a topic slug path (e.g. sports/football/fantasy-football), ID, or ancestry-path hash. A topic also matches its descendants, and multiple topics are unioned. Only podcasts that regularly cover the topic are included — a show that merely mentions it in passing is excluded. The feed still covers at most 100 podcasts total, so combine with popularity_threshold to keep just the most popular. An unknown topic returns a 404. explode: false in: query name: topic_ids schema: description: >- Scope the feed to one or more topics (comma-separated): each a topic slug path (e.g. sports/football/fantasy-football), ID, or ancestry-path hash. A topic also matches its descendants, and multiple topics are unioned. Only podcasts that regularly cover the topic are included — a show that merely mentions it in passing is excluded. The feed still covers at most 100 podcasts total, so combine with popularity_threshold to keep just the most popular. An unknown topic returns a 404. items: type: string maxItems: 20 type: - array - 'null' - description: >- Opaque cursor from a prior feed response. Poll again with it to receive episodes ingested since. Omit (with no since) to start from now. explode: false in: query name: cursor schema: description: >- Opaque cursor from a prior feed response. Poll again with it to receive episodes ingested since. Omit (with no since) to start from now. type: string - description: >- ISO 8601 date or date-time to start from when no cursor is supplied. Ignored if cursor is set. explode: false in: query name: since schema: description: >- ISO 8601 date or date-time to start from when no cursor is supplied. Ignored if cursor is set. type: string - description: Maximum episodes per page. explode: false in: query name: limit schema: default: 25 description: Maximum episodes per page. format: int64 maximum: 100 minimum: 1 type: integer - description: >- Heavy relations to embed in each episode (comma-separated). transcript is the dialogue transcript; segments and clips are the AI-derived sets; all means everything available at the chosen milestone. A field is only valid when its data is guaranteed at the milestone (transcript→transcribed, segments→segmented, clips→fully_ingested); requesting one earlier is a 422. explode: false in: query name: include schema: description: >- Heavy relations to embed in each episode (comma-separated). transcript is the dialogue transcript; segments and clips are the AI-derived sets; all means everything available at the chosen milestone. A field is only valid when its data is guaranteed at the milestone (transcript→transcribed, segments→segmented, clips→fully_ingested); requesting one earlier is a 422. items: enum: - transcript - segments - clips - all type: string type: - array - 'null' responses: '200': content: application/json: schema: $ref: '#/components/schemas/PageEpisode' description: OK default: content: application/problem+json: schema: $ref: '#/components/schemas/PlatformError' description: Error x-codeSamples: - label: cURL lang: curl source: |- curl -H "X-API-Key: $PARTICLE_API_KEY" \ "https://api.particle.pro/v1/podcasts/episodes/feed?milestone=transcribed&limit=25" components: schemas: PageEpisode: additionalProperties: false properties: cursor: description: Pass to next request for more results type: string data: description: List of results items: $ref: '#/components/schemas/Episode' type: - array - 'null' has_more: description: Whether more results exist type: boolean required: - data - has_more type: object PlatformError: additionalProperties: false properties: detail: description: >- A human-readable explanation specific to this occurrence of the problem. examples: - Property foo is required but is missing. type: string error_code: type: string errors: description: Optional list of individual error details items: $ref: '#/components/schemas/ErrorDetail' type: - array - 'null' instance: description: >- A URI reference that identifies the specific occurrence of the problem. examples: - https://example.com/error-log/abc123 format: uri type: string resolve: $ref: '#/components/schemas/ErrorResolve' status: description: HTTP status code examples: - 400 format: int64 type: integer title: description: >- A short, human-readable summary of the problem type. This value should not change between occurrences of the error. examples: - Bad Request type: string type: default: about:blank description: A URI reference to human-readable documentation for the error. examples: - https://example.com/errors/example format: uri type: string type: object Episode: additionalProperties: false properties: audio_url: description: Direct audio stream URL type: string clip_count: description: Number of AI-extracted clips format: int64 type: integer clips: description: >- AI-extracted clips. Only present when include=clips (or include=all) is requested at the fully_ingested milestone. items: $ref: '#/components/schemas/Clip' type: - array - 'null' description: description: Episode description type: string duration_seconds: description: Episode duration in seconds format: double type: number entity_count: description: Number of mentioned entities format: int64 type: integer episode_number: description: Episode number in the series format: int64 type: integer explicit: description: Whether the episode contains explicit content type: boolean has_transcript: description: Whether a transcript is available type: boolean id: description: Unique identifier type: string image_url: description: Episode artwork URL type: string language: description: ISO 639-1 language code type: string podcast: $ref: '#/components/schemas/PodcastCompact' description: Parent podcast published_at: description: Publication date format: date-time type: string segment_count: description: Number of AI-identified segments format: int64 type: integer segments: description: >- AI-identified segments. Only present when include=segments (or include=all) is requested at a milestone of segmented or later. items: $ref: '#/components/schemas/Segment' type: - array - 'null' slug: description: Human-readable slug identifier type: string speakers: description: Speakers in this episode items: $ref: '#/components/schemas/EpisodeSpeaker' type: - array - 'null' title: description: Episode title type: string topics: description: Topic classifications items: $ref: '#/components/schemas/Topic' type: - array - 'null' transcript: $ref: '#/components/schemas/DialogueTranscriptResponse' description: >- Dialogue transcript. Only present when include=transcript (or include=all) is requested at a milestone of transcribed or later. url: description: Episode web URL type: string videos: description: >- Video URLs discovered for this episode (native enclosures, Podcasting 2.0 alternate enclosures, Media RSS, and platform links / show-note URLs from YouTube, Vimeo, Twitch, Rumble). Populated on the GET /podcasts/episodes/{id} endpoint. items: $ref: '#/components/schemas/EpisodeVideo' type: - array - 'null' required: - id - title - explicit - duration_seconds - has_transcript type: object ErrorDetail: additionalProperties: false properties: location: description: >- Where the error occurred, e.g. 'body.items[3].tags' or 'path.thing-id' type: string message: description: Error message text type: string value: description: The value at the given location type: object ErrorResolve: additionalProperties: false properties: action: type: string endpoint: type: string message: type: string method: type: string url: type: string required: - message type: object Clip: additionalProperties: false properties: audio_url: description: Direct audio URL for this clip type: string description: description: AI-generated clip description type: string duration_seconds: description: Clip duration format: double type: number end_seconds: description: End time within the episode format: double type: number engagement_score: description: >- AI-predicted engagement potential (integer, 0 to 100). Values above 70 are typical for a strong clip. format: double type: number episode: $ref: '#/components/schemas/EpisodeCompactWithPodcast' description: Parent episode with podcast context id: description: Unique identifier type: string intro_statement: description: AI-generated hook text for social sharing type: string segment: $ref: '#/components/schemas/SegmentCompact' description: Parent segment context speaker: $ref: '#/components/schemas/ClipSpeaker' description: Primary speaker in this clip start_seconds: description: Start time within the episode format: double type: number title: description: AI-generated clip title type: string type: description: Clip type enum: - SPICY - CONTROVERSIAL - EMOTIONAL - FUNNY - SHOCKING - INSIGHTFUL - INFORMATIVE - EDUCATIONAL - PHILOSOPHICAL - AHA_MOMENT - NOTABLE_LINE - BEST_STORY - DEBATE_DISAGREEMENT type: string required: - id - title - engagement_score - start_seconds - end_seconds - duration_seconds type: object PodcastCompact: additionalProperties: false properties: id: description: Podcast ID type: string image_url: description: Cover image URL type: string publisher: $ref: '#/components/schemas/PodcastPublisherCompact' description: >- Publisher (network) attributed to this podcast. Present only when the embedding endpoint preloads publisher attribution and the podcast's publisher is known. slug: description: Human-readable slug identifier type: string title: description: Podcast title type: string required: - id - title type: object Segment: additionalProperties: false properties: audio_url: description: Direct audio URL for this segment type: string description: description: AI-generated segment description type: string duration_seconds: description: Segment duration format: double type: number end_seconds: description: End time within the episode format: double type: number episode: $ref: '#/components/schemas/EpisodeCompactWithPodcast' description: Parent episode with podcast context id: description: Unique identifier type: string number: description: Segment position within the episode format: int64 type: integer read_type: description: >- For AD segments, how the ad was delivered (HOST_READ, PRE_RECORDED, NETWORK_PROMO) type: string start_seconds: description: Start time within the episode format: double type: number summary: description: AI-generated segment summary type: string title: description: AI-generated segment title type: string type: description: >- Segment type (INTRO, PERSONAL_BANTER, TOPIC_DISCUSSION, INTERVIEW, TRANSITION, AD, OUTRO) type: string required: - id - number - type - title - start_seconds - end_seconds - duration_seconds type: object EpisodeSpeaker: additionalProperties: false properties: description: description: Brief description of the speaker type: string descriptor: description: >- Movie-credits-style role-in-context label for speakers we can describe but not identify by name ("Taylor's Lawyer", "Court Officer"). Co-exists with name carrying the raw STT label when no identity could be established. Rendered by clients when descriptor is non-empty and the speaker is otherwise unresolved. type: string entity: $ref: '#/components/schemas/EntityCompact' description: Linked knowledge graph entity, when this speaker is identified name: description: Speaker name type: string person: $ref: '#/components/schemas/PersonCompact' description: >- Linked first-class Person, when the speaker has been resolved to a row in /v1/people role: description: >- Speaker role. Common values: HOST, CO_HOST, GUEST, PANELIST, CORRESPONDENT, ADVERTISER. Advertisers and unidentified soundbite speakers are excluded by default; opt in via the role query param. Unidentified soundbite speakers have no role, so this field is absent on those entries (use role=unknown to include them). type: string speaking_duration_seconds: description: Total speaking time in seconds format: double type: number required: - name type: object Topic: additionalProperties: false properties: ancestry: description: Human-readable breadcrumb path (e.g. Business > Technology > AI) type: string ancestry_path: description: Hash-based ancestry path for programmatic filtering type: string episode_count: description: >- Number of episodes in this podcast that cover this topic (only populated for /v1/podcasts/{id} topic lists) format: int64 type: integer id: description: Unique identifier type: string name: description: Topic name type: string slug: description: >- Ancestry-based slug (e.g., technology/artificial-intelligence). Can be used as topic_id. type: string required: - id - name - slug type: object DialogueTranscriptResponse: additionalProperties: false properties: duration_seconds: description: Total duration in seconds format: double type: number episode_id: description: Parent episode ID type: string language: description: Transcript language code type: string lines: description: Speaker-attributed dialogue lines items: $ref: '#/components/schemas/DialogueLine' type: - array - 'null' required: - episode_id - duration_seconds - lines type: object EpisodeVideo: additionalProperties: false properties: duration_seconds: description: Video duration in seconds when known format: int64 type: integer height: description: Frame height in pixels when known format: int64 type: integer mime_type: description: MIME type when known (e.g. video/mp4) type: string platform: description: >- Hosting platform. native denotes a direct media file served from the podcaster's own infrastructure; other is the fallback when we know the URL is video but don't have a platform-specific handler. enum: - youtube - vimeo - twitch - rumble - tiktok - native - other type: string url: description: Video URL type: string width: description: Frame width in pixels when known format: int64 type: integer required: - url type: object EpisodeCompactWithPodcast: additionalProperties: false properties: id: description: Episode ID type: string podcast: $ref: '#/components/schemas/PodcastCompact' description: Parent podcast published_at: description: Publication date format: date-time type: string slug: description: Human-readable slug identifier type: string title: description: Episode title type: string required: - id - title type: object SegmentCompact: additionalProperties: false properties: id: description: Segment ID type: string title: description: Segment title type: string type: description: Segment type type: string required: - id - type - title type: object ClipSpeaker: additionalProperties: false properties: entity: $ref: '#/components/schemas/EntityCompact' description: Linked knowledge graph entity, when this speaker is identified name: description: Speaker name type: string person: $ref: '#/components/schemas/PersonCompact' description: Linked first-class Person, when the speaker has been resolved role: description: Speaker role type: string required: - name type: object PodcastPublisherCompact: additionalProperties: false properties: id: description: Publisher ID type: string name: description: Publisher name type: string slug: description: >- Human-readable slug identifier (e.g., 'goalhanger', 'iheartpodcasts'). When present, accepted in place of the ID anywhere a publisher reference is taken in the API. Occasionally absent on publishers whose name doesn't slugify (e.g., scripts not representable in ASCII URL slugs). type: string required: - id - name type: object EntityCompact: additionalProperties: false properties: company: $ref: '#/components/schemas/EntityCompany' description: Linked company record, if this entity is a known company description: description: Short description type: string id: description: Entity ID type: string image_url: description: Entity image URL type: string name: description: Entity name type: string person: $ref: '#/components/schemas/EntityPerson' description: Linked person record, if this entity is a known person slug: description: Human-readable slug identifier type: string type: $ref: '#/components/schemas/EntityType' description: Category. Omitted when the entity falls outside the supported set. wikipedia_url: description: Wikipedia URL type: string required: - id - slug - name type: object PersonCompact: additionalProperties: false properties: description: description: Short description (e.g. current role), when known. type: string id: description: Encoded Person identifier type: string image_url: description: Canonical headshot URL when one is known for the Person type: string name: description: Display name type: string slug: description: >- Stable human-readable handle (e.g. 'satya-nadella'). Recommended canonical identifier on every Particle Pro person surface. type: string required: - id - name type: object DialogueLine: additionalProperties: false properties: end_seconds: description: End time in seconds format: double type: number number: description: Line number (1-indexed) format: int64 type: integer role: description: Speaker role (HOST, GUEST, etc.) type: string speaker: description: Speaker name or ID type: string start_seconds: description: Start time in seconds format: double type: number text: description: Spoken text type: string required: - number - speaker - start_seconds - end_seconds - text type: object EntityCompany: additionalProperties: false properties: domain: description: Company website domain type: string id: description: Company identifier type: string ticker: description: Primary stock ticker symbol type: string required: - id type: object EntityPerson: additionalProperties: false properties: company: description: Current company name type: string id: description: Person identifier type: string image_url: description: Person headshot URL type: string title: description: Current role title type: string required: - id type: object EntityType: additionalProperties: false properties: name: description: Human-friendly display label (e.g. 'Company'). type: string slug: description: >- Stable identifier, safe to pass to the type query parameter (e.g. 'company'). type: string required: - slug - name type: object securitySchemes: ApiKeyHeader: description: Pass your API key in the X-API-Key header (recommended). in: header name: X-API-Key type: apiKey BearerAuth: description: Pass your API key as a Bearer token in the Authorization header. scheme: bearer type: http ````