> ## 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. # Get a cross-publisher suitability leaderboard > Returns a paginated, ranked list of podcast publishers by IAB/GARM brand-suitability composition. Pick a metric (safest, riskiest, most_placeable, most_analyzed) to choose how the ranking is constructed. min_analyzed_podcasts guards against tiny catalogs dominating share-based metrics. The ranking reflects each publisher's current catalog composition; paginate the audit history per show via GET /v1/podcasts/{id}/suitability?include=history when you need point-in-time analysis. Each row carries the full tier_breakdown (counts + shares) plus the metric_value the row was ranked by. ## OpenAPI ````yaml /openapi.json get /v1/podcasts/suitability/publishers/leaderboard 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/suitability/publishers/leaderboard: get: tags: - Podcast Brand Suitability - tier:premium summary: Get a cross-publisher suitability leaderboard description: >- Returns a paginated, ranked list of podcast publishers by IAB/GARM brand-suitability composition. Pick a metric (safest, riskiest, most_placeable, most_analyzed) to choose how the ranking is constructed. min_analyzed_podcasts guards against tiny catalogs dominating share-based metrics. The ranking reflects each publisher's current catalog composition; paginate the audit history per show via GET /v1/podcasts/{id}/suitability?include=history when you need point-in-time analysis. Each row carries the full tier_breakdown (counts + shares) plus the metric_value the row was ranked by. operationId: get-publisher-suitability-leaderboard parameters: - description: Results per page explode: false in: query name: limit schema: default: 25 description: Results per page format: int64 maximum: 100 minimum: 1 type: integer - description: Opaque pagination cursor from previous response explode: false in: query name: cursor schema: description: Opaque pagination cursor from previous response type: string - description: >- How to rank publishers. safest sorts by SAFE share of the analyzed catalog (desc); riskiest sorts by UNSAFE share (desc); most_placeable sorts by combined SAFE + LIMITED share (desc) — the 'broadly buyable' slice; most_analyzed sorts by absolute analyzed_podcasts count (desc). explode: false in: query name: metric schema: default: safest description: >- How to rank publishers. safest sorts by SAFE share of the analyzed catalog (desc); riskiest sorts by UNSAFE share (desc); most_placeable sorts by combined SAFE + LIMITED share (desc) — the 'broadly buyable' slice; most_analyzed sorts by absolute analyzed_podcasts count (desc). enum: - safest - riskiest - most_placeable - most_analyzed type: string - description: >- Exclude publishers with fewer than this many analyzed podcasts. Guards against tiny catalogs dominating share-based metrics. explode: false in: query name: min_analyzed_podcasts schema: default: 5 description: >- Exclude publishers with fewer than this many analyzed podcasts. Guards against tiny catalogs dominating share-based metrics. format: int64 maximum: 1000 minimum: 1 type: integer responses: '200': content: application/json: schema: $ref: '#/components/schemas/PagePublisherSuitabilityLeaderboardEntry' 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/suitability/publishers/leaderboard?limit=25&metric=safest&min_analyzed_podcasts=5" components: schemas: PagePublisherSuitabilityLeaderboardEntry: additionalProperties: false properties: cursor: description: Pass to next request for more results type: string data: description: List of results items: $ref: '#/components/schemas/PublisherSuitabilityLeaderboardEntry' 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 PublisherSuitabilityLeaderboardEntry: additionalProperties: false properties: coverage: $ref: '#/components/schemas/PublisherSuitabilityCoverage' description: Catalog size and how much of it has been analyzed. metric_value: description: >- Value of the metric used to rank — a share in [0, 1] for safest/riskiest/most_placeable, an absolute count for most_analyzed. format: double type: number publisher: $ref: '#/components/schemas/PodcastPublisherCompact' description: The ranked publisher. rank: description: 1-indexed rank within the current ordering. format: int64 type: integer tier_breakdown: $ref: '#/components/schemas/PublisherSuitabilityTierBreakdown' description: Per-tier composition across analyzed podcasts. required: - publisher - rank - coverage - tier_breakdown - metric_value 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 PublisherSuitabilityCoverage: additionalProperties: false properties: analyzed_coverage: description: >- analyzed_podcasts / total_podcasts, clamped to [0, 1]. Treat as a confidence proxy for the rolled-up verdict. format: double type: number analyzed_podcasts: description: >- Number of catalog podcasts that have an IAB/GARM suitability analysis. format: int64 type: integer quality: description: >- Qualitative read on how representative the rollup is given current analysis coverage: LOW (< 0.3), MEDIUM (0.3-0.7), HIGH (>= 0.7). type: string total_podcasts: description: >- Total number of non-deleted podcasts attributed to this publisher (denormalized from podcast_publishers.podcast_count). format: int64 type: integer required: - total_podcasts - analyzed_podcasts - analyzed_coverage - quality 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 PublisherSuitabilityTierBreakdown: additionalProperties: false properties: limited: description: Number assigned LIMITED (Medium Risk). format: int64 type: integer limited_share: description: Share assigned LIMITED (0..1). format: double type: number placeable_share: description: >- Combined SAFE + LIMITED share (0..1) — the 'broadly buyable' slice an advertiser without category restrictions can typically reach. format: double type: number safe: description: Number of analyzed podcasts assigned the SAFE (Low Risk) tier. format: int64 type: integer safe_share: description: Share of analyzed podcasts assigned SAFE (0..1). format: double type: number sensitive: description: Number assigned SENSITIVE (High Risk). format: int64 type: integer sensitive_share: description: Share assigned SENSITIVE (0..1). format: double type: number unsafe: description: Number assigned UNSAFE (Brand Safety Floor). format: int64 type: integer unsafe_share: description: Share assigned UNSAFE (0..1). format: double type: number required: - safe - limited - sensitive - unsafe - safe_share - limited_share - sensitive_share - unsafe_share - placeable_share 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 ````