{ "openapi": "3.0.1", "info": { "title": "Substack Newsletter Scraper - Subscribers, Pricing & Authors", "description": "Find Substack newsletters by keyword or category and get subscriber estimates, paid pricing, bestseller status, author info and recent posts. No login needed.", "version": "1.0", "x-build-id": "knxYApnjcznhtzjgS" }, "servers": [ { "url": "https://api.apify.com/v2" } ], "paths": { "/acts/brazen_kraken~substack-newsletter-scraper/run-sync-get-dataset-items": { "post": { "operationId": "run-sync-get-dataset-items-brazen_kraken-substack-newsletter-scraper", "x-openai-isConsequential": false, "summary": "Executes an Actor, waits for its completion, and returns Actor's dataset items in response.", "tags": [ "Run Actor" ], "requestBody": { "required": true, "content": { "application/json": { "schema": { "$ref": "#/components/schemas/inputSchema" } } } }, "parameters": [ { "name": "token", "in": "query", "required": true, "schema": { "type": "string" }, "description": "Enter your Apify token here" } ], "responses": { "200": { "description": "OK" } } } }, "/acts/brazen_kraken~substack-newsletter-scraper/runs": { "post": { "operationId": "runs-sync-brazen_kraken-substack-newsletter-scraper", "x-openai-isConsequential": false, "summary": "Executes an Actor and returns information about the initiated run in response.", "tags": [ "Run Actor" ], "requestBody": { "required": true, "content": { "application/json": { "schema": { "$ref": "#/components/schemas/inputSchema" } } } }, "parameters": [ { "name": "token", "in": "query", "required": true, "schema": { "type": "string" }, "description": "Enter your Apify token here" } ], "responses": { "200": { "description": "OK", "content": { "application/json": { "schema": { "$ref": "#/components/schemas/runsResponseSchema" } } } } } } }, "/acts/brazen_kraken~substack-newsletter-scraper/run-sync": { "post": { "operationId": "run-sync-brazen_kraken-substack-newsletter-scraper", "x-openai-isConsequential": false, "summary": "Executes an Actor, waits for completion, and returns the OUTPUT from Key-value store in response.", "tags": [ "Run Actor" ], "requestBody": { "required": true, "content": { "application/json": { "schema": { "$ref": "#/components/schemas/inputSchema" } } } }, "parameters": [ { "name": "token", "in": "query", "required": true, "schema": { "type": "string" }, "description": "Enter your Apify token here" } ], "responses": { "200": { "description": "OK" } } } } }, "components": { "schemas": { "inputSchema": { "type": "object", "properties": { "categories": { "title": "Categories (leaderboards)", "type": "array", "description": "Pull newsletters from Substack's category leaderboards (ranked by popularity). Leave empty with keywords set to search every category.", "items": { "type": "string", "enum": [ "96", "4", "62", "76739", "153", "13645", "podcast", "94", "15417", "76740", "76741", "103", "49715", "11", "223", "15414", "134", "339", "284", "355", "61", "109", "1796", "114", "387", "51282", "118", "18", "49692", "34", "76782", "76866", "76863" ], "enumTitles": [ "Culture", "Technology", "Business", "U.S. Politics", "Finance", "Food & Drink", "Podcasts", "Sports", "Art & Illustration", "World Politics", "Health Politics", "News", "Fashion & Beauty", "Music", "Faith & Spirituality", "Climate & Environment", "Science", "Literature", "Fiction", "Health & Wellness", "Design", "Travel", "Parenting", "Philosophy", "Comics", "International", "Crypto", "History", "Humor", "Education", "Film & TV", "Home & Garden", "Games" ] } }, "keywords": { "title": "Keywords", "type": "array", "description": "Only keep newsletters whose name, description or author bio contains one of these words, e.g. \"real estate\", \"AI\", \"marketing\".", "items": { "type": "string" } }, "publicationUrls": { "title": "Specific newsletters", "type": "array", "description": "Newsletter URLs or subdomains to look up directly, e.g. https://www.lennysnewsletter.com or just \"bytebytego\".", "items": { "type": "string" } }, "maxResults": { "title": "Max newsletters", "minimum": 1, "maximum": 20000, "type": "integer", "description": "Stop after saving this many newsletters in total.", "default": 100 }, "minSubscribers": { "title": "Minimum subscribers", "minimum": 0, "type": "integer", "description": "Only keep newsletters with at least this many subscribers (based on Substack's public estimate). 0 = no filter.", "default": 0 }, "paidOnly": { "title": "Only newsletters with a paid tier", "type": "boolean", "description": "Keep only newsletters that offer paid subscriptions.", "default": false }, "includeRecentPosts": { "title": "Include recent posts", "type": "boolean", "description": "Also fetch each newsletter's latest posts and compute engagement: average likes & comments per post, posts per month and last post date. Recommended for sponsorship research.", "default": true }, "maxPostsPerPublication": { "title": "Posts per newsletter", "minimum": 1, "maximum": 50, "type": "integer", "description": "How many recent posts to fetch per newsletter when \"Include recent posts\" is on.", "default": 10 }, "maxPagesPerCategory": { "title": "Max pages per category", "minimum": 1, "maximum": 100, "type": "integer", "description": "Each leaderboard page holds 25 newsletters. Most categories have about 20 pages.", "default": 25 }, "maxConcurrency": { "title": "Max concurrent requests", "minimum": 1, "maximum": 5, "type": "integer", "description": "Keep this low to stay polite to Substack.", "default": 3 } } }, "runsResponseSchema": { "type": "object", "properties": { "data": { "type": "object", "properties": { "id": { "type": "string" }, "actId": { "type": "string" }, "userId": { "type": "string" }, "startedAt": { "type": "string", "format": "date-time", "example": "2025-01-08T00:00:00.000Z" }, "finishedAt": { "type": "string", "format": "date-time", "example": "2025-01-08T00:00:00.000Z" }, "status": { "type": "string", "example": "READY" }, "meta": { "type": "object", "properties": { "origin": { "type": "string", "example": "API" }, "userAgent": { "type": "string" } } }, "stats": { "type": "object", "properties": { "inputBodyLen": { "type": "integer", "example": 2000 }, "rebootCount": { "type": "integer", "example": 0 }, "restartCount": { "type": "integer", "example": 0 }, "resurrectCount": { "type": "integer", "example": 0 }, "computeUnits": { "type": "integer", "example": 0 } } }, "options": { "type": "object", "properties": { "build": { "type": "string", "example": "latest" }, "timeoutSecs": { "type": "integer", "example": 300 }, "memoryMbytes": { "type": "integer", "example": 1024 }, "diskMbytes": { "type": "integer", "example": 2048 } } }, "buildId": { "type": "string" }, "defaultKeyValueStoreId": { "type": "string" }, "defaultDatasetId": { "type": "string" }, "defaultRequestQueueId": { "type": "string" }, "buildNumber": { "type": "string", "example": "1.0.0" }, "containerUrl": { "type": "string" }, "usage": { "type": "object", "properties": { "ACTOR_COMPUTE_UNITS": { "type": "integer", "example": 0 }, "DATASET_READS": { "type": "integer", "example": 0 }, "DATASET_WRITES": { "type": "integer", "example": 0 }, "KEY_VALUE_STORE_READS": { "type": "integer", "example": 0 }, "KEY_VALUE_STORE_WRITES": { "type": "integer", "example": 1 }, "KEY_VALUE_STORE_LISTS": { "type": "integer", "example": 0 }, "REQUEST_QUEUE_READS": { "type": "integer", "example": 0 }, "REQUEST_QUEUE_WRITES": { "type": "integer", "example": 0 }, "DATA_TRANSFER_INTERNAL_GBYTES": { "type": "integer", "example": 0 }, "DATA_TRANSFER_EXTERNAL_GBYTES": { "type": "integer", "example": 0 }, "PROXY_RESIDENTIAL_TRANSFER_GBYTES": { "type": "integer", "example": 0 }, "PROXY_SERPS": { "type": "integer", "example": 0 }, "PROXY_UNBLOCKER_UNITS": { "type": "integer", "example": 0 } } }, "usageTotalUsd": { "type": "number", "example": 0.00005 }, "usageUsd": { "type": "object", "properties": { "ACTOR_COMPUTE_UNITS": { "type": "integer", "example": 0 }, "DATASET_READS": { "type": "integer", "example": 0 }, "DATASET_WRITES": { "type": "integer", "example": 0 }, "KEY_VALUE_STORE_READS": { "type": "integer", "example": 0 }, "KEY_VALUE_STORE_WRITES": { "type": "number", "example": 0.00005 }, "KEY_VALUE_STORE_LISTS": { "type": "integer", "example": 0 }, "REQUEST_QUEUE_READS": { "type": "integer", "example": 0 }, "REQUEST_QUEUE_WRITES": { "type": "integer", "example": 0 }, "DATA_TRANSFER_INTERNAL_GBYTES": { "type": "integer", "example": 0 }, "DATA_TRANSFER_EXTERNAL_GBYTES": { "type": "integer", "example": 0 }, "PROXY_RESIDENTIAL_TRANSFER_GBYTES": { "type": "integer", "example": 0 }, "PROXY_SERPS": { "type": "integer", "example": 0 }, "PROXY_UNBLOCKER_UNITS": { "type": "integer", "example": 0 } } } } } } } } } }