{ "openapi": "3.0.1", "info": { "title": "Marktplaats Price Monitor: Price Drop Alerts, No Login", "description": "Marktplaats price monitor: schedule a keyword search and get back only the listings whose price fell since the last run, with the old price, the new price and the drop percentage. Postcode and distance filters, no login. A run with nothing cheaper is free.", "version": "1.0", "x-build-id": "Kchewt4AlD4kcIGtw" }, "servers": [ { "url": "https://api.apify.com/v2" } ], "paths": { "/acts/accountable_eel~marktplaats-price-monitor/run-sync-get-dataset-items": { "post": { "operationId": "run-sync-get-dataset-items-accountable_eel-marktplaats-price-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": { "$ref": "#/components/schemas/inputSchema" } } } }, "parameters": [ { "name": "token", "in": "query", "required": true, "schema": { "type": "string" }, "description": "Enter your Apify token here" } ], "responses": { "200": { "description": "OK" } } } }, "/acts/accountable_eel~marktplaats-price-monitor/runs": { "post": { "operationId": "runs-sync-accountable_eel-marktplaats-price-monitor", "x-openai-isConsequential": false, "summary": "Executes an Actor and returns information about the initiated run in response.", "tags": [ "Run Actor" ], "requestBody": { "required": true, "content": { "application/json": { "schema": { "$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": { "$ref": "#/components/schemas/runsResponseSchema" } } } } } } }, "/acts/accountable_eel~marktplaats-price-monitor/run-sync": { "post": { "operationId": "run-sync-accountable_eel-marktplaats-price-monitor", "x-openai-isConsequential": false, "summary": "Executes an Actor, waits for completion, and returns the OUTPUT from Key-value store in response.", "tags": [ "Run Actor" ], "requestBody": { "required": true, "content": { "application/json": { "schema": { "$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": [ "searches" ], "properties": { "searches": { "title": "Marktplaats searches to watch for price drops", "type": "array", "description": "One search per line: keywords like \"iphone\", or paste a marktplaats.nl search URL (its filter fragment after # is not read; use the Postcode / Distance / Price type fields below instead). Each line becomes a watchlist: the first run remembers the prices it finds, and every run after it returns only the listings that got cheaper. Accepted formats: iphone, racefiets, https://www.marktplaats.nl/q/iphone/. You're only charged for the ones we actually find — a miss costs nothing.", "items": { "type": "string" } }, "testRun": { "title": "Try it first — only process the first 5", "type": "boolean", "description": "Turn this on to test your input on a small sample before running the full list. Turn it off to process everything.", "default": false }, "onlyFound": { "title": "Hide rows with no result", "type": "boolean", "description": "Only keep rows where something was actually found. Misses are always free, whether or not you show them here.", "default": false }, "includeKeywords": { "title": "Title must contain (optional)", "type": "array", "description": "Optional. One keyword per line, case-insensitive. A listing is kept only if its title contains at least one of these. Leave empty to keep every title.", "items": { "type": "string" } }, "excludeKeywords": { "title": "Title must not contain (optional)", "type": "array", "description": "Optional. One keyword per line, case-insensitive. A listing whose title contains any of these is dropped. Leave empty to drop nothing.", "items": { "type": "string" } }, "maxResults": { "title": "Stop after this many results", "minimum": 1, "type": "integer", "description": "Optional. Stop the run once this many results have been found — useful for a quick, cheap sample. Leave blank for no limit." }, "maxListingsPerSearch": { "title": "Most listings to check per search", "type": "integer", "description": "Marktplaats returns up to 100 listings per request (the real, confirmed ceiling: 101 is rejected); this actor pages automatically above that, up to 1000 per search. This is how deep the watchlist looks, not how many rows you get back: you only pay for the listings whose price actually fell.", "default": 100 }, "minPrice": { "title": "Minimum price (EUR)", "type": "integer", "description": "Optional. Drop listings priced below this. Leave empty for no minimum. Applied after fetching (no confirmed API price-range parameter)." }, "maxPrice": { "title": "Maximum price (EUR)", "type": "integer", "description": "Optional. Drop listings priced above this. Leave empty for no maximum. Applied after fetching (no confirmed API price-range parameter)." }, "conditions": { "title": "Conditions to keep (optional)", "type": "array", "description": "Optional. One per line: new_with_tags, new, like_new, good, fair, unknown. Leave empty to keep every condition. Matched against Marktplaats' own Dutch labels (Nieuw, Zo goed als nieuw, Gebruikt, Niet werkend, Refurbished — there is no \"with tags\" grade, so new_with_tags never matches). A listing with no condition attribute is unknown.", "items": { "type": "string" } }, "cities": { "title": "Cities to keep (optional)", "type": "array", "description": "Optional. One city name per line, case-insensitive, matched as a \"contains\" against the listing's own city. Leave empty to keep every location.", "items": { "type": "string" } }, "sortBy": { "title": "Sort by (optional)", "enum": [ "", "newest", "price_asc", "price_desc" ], "type": "string", "description": "Optional. Sorts the price drops this run found, after filtering. Leave empty to keep Marktplaats' own newest-first ordering (the existing default behaviour, unchanged).", "default": "" }, "priceType": { "title": "Price type", "enum": [ "", "FIXED", "BID", "MIN_BID", "FAST_BID", "FREE", "ASKING", "TRADE", "RESERVED", "SEE_DESCRIPTION" ], "type": "string", "description": "Optional. Keep only listings of this price type. Price-drop detection only ever fires on a fixed price or an asking price, so setting this to \"Fixed price\" is the cleanest way to run this watchlist. FIXED, MIN_BID, FAST_BID and SEE_DESCRIPTION were observed live; BID, FREE, ASKING, TRADE and RESERVED are Marktplaats' other documented values. Applied after fetching.", "default": "" }, "postcode": { "title": "Postcode to search near", "type": "string", "description": "Optional. A Dutch postcode (e.g. \"1011AB\") — confirmed live to change every listing's distance and re-center results. Leave empty to search all of the Netherlands.", "default": "" }, "distanceKm": { "title": "Distance from postcode (km)", "type": "integer", "description": "Only used when \"Postcode to search near\" is set. Marktplaats' own UI offers 3, 5, 10, 15, 25, 50, 100 km — any positive number works on the API." }, "deltaMode": { "title": "Only return listings that got cheaper since the last run", "type": "boolean", "description": "On by default: this is what the actor is for. The first run remembers every listing and price it finds and returns a single summary row. From the second run on, a listing comes back only when its price has fallen by at least the percentage below since it was last seen, with the old price, the new price and the drop percentage on the row. Unchanged listings are dropped before you are billed, so a quiet run costs only the start fee. Turn this off to get every matching listing instead, like an ordinary search.", "default": true }, "deltaName": { "title": "Watchlist name (optional)", "type": "string", "description": "Leave empty and we derive one from this run's filters, so two schedules with different filters keep separate memories. Type your own name to keep one memory across a filter change, or to have two schedules share one.", "default": "" }, "minPriceDropPct": { "title": "Smallest price drop worth an alert (%)", "type": "integer", "description": "Only fires for a fixed-price or asking-price listing where both the old and the new price are set (never for bids, free, or \"see description\" listings). Default 5%: a 200 euro item has to fall by at least 10 euro.", "default": 5 }, "alertOnPriceDrop": { "title": "Alert on price drops", "type": "boolean", "description": "On by default, and the whole point of this actor. Turning it off with the checkbox above on leaves nothing to return.", "default": true }, "alertOnNew": { "title": "Also return listings that are brand new", "type": "boolean", "description": "Off by default, so your results stay price drops only. Turn it on to also get listings this watchlist has never seen, each marked new rather than price-drop. They are billed like any other row.", "default": false }, "skipFirstRun": { "title": "Seed silently (no rows on the first run)", "type": "boolean", "description": "The first run of a watchlist has no earlier price to compare with, so it returns one summary row and no listings either way. This matters only if you also turned on \"Also return listings that are brand new\": with it on, the first run banks everything silently instead of returning a hundred rows at once.", "default": false }, "columns": { "title": "Which columns do you want?", "type": "array", "description": "Choose which pieces of information to include in each result row. All are included by default.", "items": { "type": "string", "enum": [ "searchQuery", "listingCount", "priceDropCount", "medianPrice", "listings", "listingId", "url", "title", "price", "currency", "previousPrice", "priceDropPct", "priceType", "city", "countryName", "postedAt", "postedText", "imageUrl", "imageCount", "condition", "conditionRaw", "conditionBucket", "category", "sellerHash", "sellerVerified", "sellerType", "isPromoted", "changeType", "firstSeenAt", "lastSeenAt", "daysListed" ], "enumTitles": [ "Search", "Price drops returned", "Price drops since last run", "Median price this run (EUR)", "All price drops found (full list)", "Marktplaats listing ID", "Listing link", "Title", "Price (EUR)", "Currency (always EUR — marktplaats.nl is single-currency)", "Previous price (EUR)", "Price drop %", "Price type", "City", "Country", "Posted (date)", "Posted (as Marktplaats words it)", "Image", "Photo count", "Condition", "Condition (raw, same as condition — marketplace-filters standard column)", "Condition (standard grade)", "Category ID", "Seller (anonymous hash)", "Seller verified", "Seller type", "Promoted listing", "Change type", "First seen on a run", "Last seen on a run", "Days listed" ] }, "default": [ "searchQuery", "listingCount", "priceDropCount", "medianPrice", "listings", "listingId", "url", "title", "price", "currency", "previousPrice", "priceDropPct", "priceType", "city", "countryName", "postedAt", "postedText", "imageUrl", "imageCount", "condition", "conditionRaw", "conditionBucket", "category", "sellerHash", "sellerVerified", "sellerType", "isPromoted", "changeType", "firstSeenAt", "lastSeenAt", "daysListed" ] }, "expandRows": { "title": "One row per listing (recommended) — turn off for one row per search instead", "type": "boolean", "description": "When on, each listing found gets its own row instead of being grouped under its search. You're still only charged once per search, no matter how many rows it produces.", "default": true }, "maxConcurrency": { "title": "Max concurrency", "minimum": 1, "maximum": 20, "type": "integer", "description": "Parallel requests. Keep conservative — this target has no browser fallback, so getting blocked costs more than slow-and-steady.", "default": 5 }, "proxyConfiguration": { "title": "Proxy configuration", "type": "object", "description": "Apify Proxy config. Residential recommended for anti-bot-sensitive targets.", "default": { "useApifyProxy": true } } } }, "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 } } } } } } } } } }