{ "openapi": "3.0.1", "info": { "title": "Page Change Monitor", "description": "Watch public web pages for text changes. Snapshot pricing, terms or policy pages, compare on a schedule, and get concise diffs. Respects robots.txt. Does not log in or bypass paywalls. By Steadfeed.", "version": "0.2", "x-build-id": "h32ujaxglrsFWnYWc" }, "servers": [ { "url": "https://api.apify.com/v2" } ], "paths": { "/acts/steadfeed~page-change-monitor/run-sync-get-dataset-items": { "post": { "operationId": "run-sync-get-dataset-items-steadfeed-page-change-monitor", "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": { "$ref": "#/components/schemas/inputSchema" } } } }, "parameters": [ { "name": "token", "in": "query", "required": true, "schema": { "type": "string" }, "description": "Enter your Apify token here" } ], "responses": { "200": { "description": "OK" } } } }, "/acts/steadfeed~page-change-monitor/runs": { "post": { "operationId": "runs-sync-steadfeed-page-change-monitor", "x-openai-isConsequential": false, "summary": "Executes an Actor and returns information about the initiated run in response.", "tags": [ "Run Actor" ], "requestBody": { "required": true, "content": { "application/json": { "schema": { "$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": { "$ref": "#/components/schemas/runsResponseSchema" } } } } } } }, "/acts/steadfeed~page-change-monitor/run-sync": { "post": { "operationId": "run-sync-steadfeed-page-change-monitor", "x-openai-isConsequential": false, "summary": "Executes an Actor, waits for completion, and returns the OUTPUT from Key-value store in response.", "tags": [ "Run Actor" ], "requestBody": { "required": true, "content": { "application/json": { "schema": { "$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", "required": [ "pages" ], "properties": { "pages": { "title": "Pages to watch", "minItems": 1, "maxItems": 50, "type": "array", "description": "1–50 public http(s) page objects. Each needs a url; optional CSS selector limits the compared region; optional label is a short name. Duplicate url+selector pairs are rejected. Does not log in or bypass paywalls.", "items": { "type": "object", "additionalProperties": false, "required": [ "url" ], "properties": { "url": { "type": "string", "title": "Url", "description": "Public http(s) page URL", "editor": "textfield" }, "selector": { "type": "string", "title": "Selector", "description": "Optional CSS selector for the compared region", "editor": "textfield" }, "label": { "type": "string", "title": "Label", "description": "Optional short label for this watch", "editor": "textfield" } } } }, "ignorePatterns": { "title": "Ignore patterns", "type": "array", "description": "Optional substrings (case-insensitive) or /regex/ /regex/i patterns stripped before hashing and diffing. Use for rotating timestamps, view counters, or cookie banners. At most 30 patterns.", "items": { "type": "string" } }, "summarizeChanges": { "title": "Summarize changes in plain words", "type": "boolean", "description": "On changed pages, add a `summary` with what was added, removed or reworded, price/date/number changes, and routine noise (timestamps, ads, cookie/footer text) filtered out. Deterministic and free: no AI is used unless you add your own key below.", "default": true }, "skipNoiseOnlyChanges": { "title": "Treat noise-only changes as unchanged", "type": "boolean", "description": "When the only differences are timestamps, ads, counters or footer text, report the page as `unchanged` instead of `changed` (the stored snapshot is still refreshed). Off by default so behavior matches earlier versions.", "default": false }, "maxSummaryChanges": { "title": "Max changes listed in summary", "minimum": 1, "maximum": 100, "type": "integer", "description": "Cap on items in `summary.changes` (1–100).", "default": 25 }, "watchlistId": { "title": "Watchlist ID", "type": "string", "description": "Separates snapshot state when you run several schedules against the same named store. Letters, digits, _, -, . only; max 60.", "default": "default" }, "stateStoreName": { "title": "State key-value store name", "type": "string", "description": "Named Apify key-value store that holds page snapshots between scheduled runs. 3–63 characters.", "default": "steadfeed-page-change-monitor-state" }, "emitOnFirstRun": { "title": "Emit rows on first snapshot", "type": "boolean", "description": "When true (default), the first successful fetch of a page outputs a status=new row and saves the baseline. When false, only the baseline is saved.", "default": true }, "emitUnchanged": { "title": "Emit unchanged rows", "type": "boolean", "description": "When true (default), pages whose content hash matches the previous snapshot still produce a dataset row. Turn off to only receive new/changed/error rows.", "default": true }, "maxDiffLines": { "title": "Max diff lines listed", "minimum": 5, "maximum": 200, "type": "integer", "description": "Cap on added+removed lines included in the diff summary (5–200). Counts always reflect the full diff.", "default": 40 }, "requestIntervalMs": { "title": "Min delay between requests to the same host (ms)", "minimum": 200, "maximum": 30000, "type": "integer", "description": "Polite per-host spacing. 200–30000; default 1000.", "default": 1000 }, "maxRetries": { "title": "Retries for transient failures", "minimum": 0, "maximum": 5, "type": "integer", "description": "Retries for network errors and 408/429/5xx. 0–5; default 2.", "default": 2 }, "timeoutMs": { "title": "Request timeout (ms)", "minimum": 3000, "maximum": 60000, "type": "integer", "description": "Per-request timeout. 3000–60000; default 20000.", "default": 20000 }, "maxBytes": { "title": "Max response body bytes", "minimum": 50000, "maximum": 5000000, "type": "integer", "description": "Bodies larger than this are truncated before parsing. 50000–5000000; default 2000000.", "default": 2000000 }, "respectRobotsTxt": { "title": "Respect robots.txt", "type": "boolean", "description": "When true (default), fetches /robots.txt per origin and skips URLs disallowed for this Actor's user-agent. Unreachable or 5xx robots.txt also skips the page.", "default": true }, "maxPages": { "title": "Maximum pages per run", "minimum": 1, "maximum": 100, "type": "integer", "description": "Hard cap on pages array length for this run. 1–100; default 50.", "default": 50 }, "aiApiKey": { "title": "Optional: your own AI API key", "type": "string", "description": "Optional. Bring your own key for an OpenAI-compatible API to add a short AI-written summary on top of the built-in one. You pay your AI provider directly; Steadfeed never supplies or stores a key. Leave empty for free deterministic summaries only." }, "aiBaseUrl": { "title": "AI API base URL", "type": "string", "description": "OpenAI-compatible base URL (https). Default https://api.openai.com/v1.", "default": "https://api.openai.com/v1" }, "aiModel": { "title": "AI model", "type": "string", "description": "Model id your provider accepts. Default gpt-6-luna.", "default": "gpt-6-luna" }, "maxAiSummaries": { "title": "Max AI summaries per run", "minimum": 1, "maximum": 200, "type": "integer", "description": "Caps how many AI calls (billed by your provider) one run may make (1–200).", "default": 25 } } }, "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 } } } } } } } } } }