# SG Property Alert Engine — New Listings & Price Drops (`42far/sg-property-alert-engine`) Actor Monitor 99.co and EdgeProp for new property listings matching your criteria. Get Telegram alerts when a new listing drops or a price changes. Built for Singapore property agents and serious buyers. - **URL**: https://apify.com/42far/sg-property-alert-engine.md - **Developed by:** [Ahmad A](https://apify.com/42far) (community) - **Categories:** AI, Automation, Developer tools - **Stats:** 2 total users, 1 monthly users, 0.0% runs succeeded, 0 bookmarks - **User rating**: No ratings yet ## Pricing from $0.30 / actor start This Actor is paid per event and usage. You are charged both the fixed price for specific events and for Apify platform usage. Learn more: https://docs.apify.com/platform/actors/running/actors-in-store#pay-per-event ## What's an Apify Actor? Actors are a software tools running on the Apify platform, for all kinds of web data extraction and automation use cases. In Batch mode, an Actor accepts a well-defined JSON input, performs an action which can take anything from a few seconds to a few hours, and optionally produces a well-defined JSON output, datasets with results, or files in key-value store. In Standby mode, an Actor provides a web server which can be used as a website, API, or an MCP server. Actors are written with capital "A". ## How to integrate an Actor? If asked about integration, you help developers integrate Actors into their projects. You adapt to their stack and deliver integrations that are safe, well-documented, and production-ready. The best way to integrate Actors is as follows. In JavaScript/TypeScript projects, use official [JavaScript/TypeScript client](https://docs.apify.com/api/client/js/docs.md): ```bash npm install apify-client ``` In Python projects, use official [Python client library](https://docs.apify.com/api/client/python/docs.md): ```bash pip install apify-client ``` In shell scripts, use [Apify CLI](https://docs.apify.com/cli/docs.md): ````bash # MacOS / Linux curl -fsSL https://apify.com/install-cli.sh | bash # Windows irm https://apify.com/install-cli.ps1 | iex ```bash In AI frameworks, you might use the [Apify MCP server](https://docs.apify.com/integrations/mcp.md). If your project is in a different language, use the [REST API](https://docs.apify.com/api/v2.md). For usage examples, see the [API](#api) section below. For more details, see Apify documentation as [Markdown index](https://docs.apify.com/llms.txt) and [Markdown full-text](https://docs.apify.com/llms-full.txt). # README # Actor input Schema ## `sources` (type: `array`): Select which property portals to monitor ## `transactionType` (type: `string`): Sale or rental listings ## `propertyTypes` (type: `array`): Types of property to include (leave empty for all) ## `districts` (type: `array`): SG postal districts to filter by (leave empty for all) ## `minPrice` (type: `integer`): Minimum price in SGD ## `maxPrice` (type: `integer`): Maximum price in SGD (0 = no limit) ## `minBedrooms` (type: `integer`): Minimum number of bedrooms (0 = any) ## `maxBedrooms` (type: `integer`): Maximum number of bedrooms (0 = any) ## `minSizeSqft` (type: `integer`): Minimum floor area in square feet (0 = any) ## `maxSizeSqft` (type: `integer`): Maximum floor area in square feet (0 = any) ## `telegramBotToken` (type: `string`): Your Telegram bot token from @BotFather. The bot will send new listing alerts to your chat. Leave empty for testing — alerts will be skipped. ## `telegramChatId` (type: `string`): Your Telegram chat ID (numeric). Message @userinfobot to get yours. Leave empty for testing. ## `alertOnPriceDrop` (type: `boolean`): Send an alert when a previously seen listing drops in price ## `proxyConfiguration` (type: `object`): Select proxy configuration for scraping. Residential proxies help bypass site blocking. ## Actor input object example ```json { "sources": [ "propertyguru", "99co", "edgeprop" ], "transactionType": "sale", "propertyTypes": [], "districts": [], "minPrice": 0, "maxPrice": 0, "minBedrooms": 0, "maxBedrooms": 0, "minSizeSqft": 0, "maxSizeSqft": 0, "alertOnPriceDrop": true, "proxyConfiguration": { "useApifyProxy": true, "apifyProxyGroups": [ "RESIDENTIAL" ] } } ```` # API You can run this Actor programmatically using our API. Below are code examples in JavaScript, Python, and CLI, as well as the OpenAPI specification and MCP server setup. ## JavaScript example ```javascript import { ApifyClient } from 'apify-client'; // Initialize the ApifyClient with your Apify API token // Replace the '' with your token const client = new ApifyClient({ token: '', }); // Prepare Actor input const input = { "sources": [ "propertyguru", "99co", "edgeprop" ], "propertyTypes": [], "districts": [], "proxyConfiguration": { "useApifyProxy": true, "apifyProxyGroups": [ "RESIDENTIAL" ] } }; // Run the Actor and wait for it to finish const run = await client.actor("42far/sg-property-alert-engine").call(input); // Fetch and print Actor results from the run's dataset (if any) console.log('Results from dataset'); console.log(`💾 Check your data here: https://console.apify.com/storage/datasets/${run.defaultDatasetId}`); const { items } = await client.dataset(run.defaultDatasetId).listItems(); items.forEach((item) => { console.dir(item); }); // 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/js/docs ``` ## Python example ```python from apify_client import ApifyClient # Initialize the ApifyClient with your Apify API token # Replace '' with your token. client = ApifyClient("") # Prepare the Actor input run_input = { "sources": [ "propertyguru", "99co", "edgeprop", ], "propertyTypes": [], "districts": [], "proxyConfiguration": { "useApifyProxy": True, "apifyProxyGroups": ["RESIDENTIAL"], }, } # Run the Actor and wait for it to finish run = client.actor("42far/sg-property-alert-engine").call(run_input=run_input) # Fetch and print Actor results from the run's dataset (if there are any) print("💾 Check your data here: https://console.apify.com/storage/datasets/" + run["defaultDatasetId"]) for item in client.dataset(run["defaultDatasetId"]).iterate_items(): print(item) # 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/python/docs/quick-start ``` ## CLI example ```bash echo '{ "sources": [ "propertyguru", "99co", "edgeprop" ], "propertyTypes": [], "districts": [], "proxyConfiguration": { "useApifyProxy": true, "apifyProxyGroups": [ "RESIDENTIAL" ] } }' | apify call 42far/sg-property-alert-engine --silent --output-dataset ``` ## MCP server setup ```json { "mcpServers": { "apify": { "command": "npx", "args": [ "mcp-remote", "https://mcp.apify.com/?tools=42far/sg-property-alert-engine", "--header", "Authorization: Bearer " ] } } } ``` ## OpenAPI specification ```json { "openapi": "3.0.1", "info": { "title": "SG Property Alert Engine — New Listings & Price Drops", "description": "Monitor 99.co and EdgeProp for new property listings matching your criteria. Get Telegram alerts when a new listing drops or a price changes. Built for Singapore property agents and serious buyers.", "version": "1.0", "x-build-id": "NDtep8ZamAJveNyhK" }, "servers": [ { "url": "https://api.apify.com/v2" } ], "paths": { "/acts/42far~sg-property-alert-engine/run-sync-get-dataset-items": { "post": { "operationId": "run-sync-get-dataset-items-42far-sg-property-alert-engine", "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": { "$ref": "#/components/schemas/inputSchema" } } } }, "parameters": [ { "name": "token", "in": "query", "required": true, "schema": { "type": "string" }, "description": "Enter your Apify token here" } ], "responses": { "200": { "description": "OK" } } } }, "/acts/42far~sg-property-alert-engine/runs": { "post": { "operationId": "runs-sync-42far-sg-property-alert-engine", "x-openai-isConsequential": false, "summary": "Executes an Actor and returns information about the initiated run in response.", "tags": [ "Run Actor" ], "requestBody": { "required": true, "content": { "application/json": { "schema": { "$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": { "$ref": "#/components/schemas/runsResponseSchema" } } } } } } }, "/acts/42far~sg-property-alert-engine/run-sync": { "post": { "operationId": "run-sync-42far-sg-property-alert-engine", "x-openai-isConsequential": false, "summary": "Executes an Actor, waits for completion, and returns the OUTPUT from Key-value store in response.", "tags": [ "Run Actor" ], "requestBody": { "required": true, "content": { "application/json": { "schema": { "$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": { "sources": { "title": "Property Portals", "type": "array", "description": "Select which property portals to monitor", "items": { "type": "string", "enum": [ "propertyguru", "99co", "edgeprop" ], "enumTitles": [ "PropertyGuru", "99.co", "EdgeProp" ] } }, "transactionType": { "title": "Transaction Type", "enum": [ "sale", "rent" ], "type": "string", "description": "Sale or rental listings", "default": "sale" }, "propertyTypes": { "title": "Property Types", "type": "array", "description": "Types of property to include (leave empty for all)", "items": { "type": "string", "enum": [ "condo", "hdb", "landed", "commercial" ], "enumTitles": [ "Condo/Apartment", "HDB", "Landed House", "Commercial" ] } }, "districts": { "title": "Districts (Postal Districts)", "type": "array", "description": "SG postal districts to filter by (leave empty for all)", "items": { "type": "string", "enum": [ "D1", "D2", "D3", "D4", "D5", "D6", "D7", "D8", "D9", "D10", "D11", "D12", "D13", "D14", "D15", "D16", "D17", "D18", "D19", "D20", "D21", "D22", "D23", "D24", "D25", "D26", "D27", "D28" ], "enumTitles": [ "D1 — Boat Quay / Raffles Place", "D2 — Chinatown / Tanjong Pagar", "D3 — Alexandra / Queenstown", "D4 — Keppel / Sentosa", "D5 — Buona Vista / Dover", "D6 — Clarke Quay / City Hall", "D7 — Bugis / Beach Road", "D8 — Little India / Farrer Park", "D9 — Orchard / Cairnhill", "D10 — Tanglin / Holland", "D11 — Newton / Novena", "D12 — Balestier / Toa Payoh", "D13 — MacPherson / Potong Pasir", "D14 — Geylang / Eunos", "D15 — East Coast / Marine Parade", "D16 — Bedok / Upper East Coast", "D17 — Changi / Loyang", "D18 — Tampines / Pasir Ris", "D19 — Serangoon / Hougang", "D20 — Ang Mo Kio / Bishan", "D21 — Clementi / Upper Bukit Timah", "D22 — Jurong / Boon Lay", "D23 — Bukit Panjang / Choa Chu Kang", "D24 — Lim Chu Kang / Tengah", "D25 — Woodlands / Admiralty", "D26 — Upper Thomson / Mandai", "D27 — Sembawang / Yishun", "D28 — Seletar / Yio Chu Kang" ] } }, "minPrice": { "title": "Min Price (SGD)", "minimum": 0, "type": "integer", "description": "Minimum price in SGD", "default": 0 }, "maxPrice": { "title": "Max Price (SGD)", "minimum": 0, "type": "integer", "description": "Maximum price in SGD (0 = no limit)", "default": 0 }, "minBedrooms": { "title": "Min Bedrooms", "minimum": 0, "maximum": 10, "type": "integer", "description": "Minimum number of bedrooms (0 = any)", "default": 0 }, "maxBedrooms": { "title": "Max Bedrooms", "minimum": 0, "maximum": 10, "type": "integer", "description": "Maximum number of bedrooms (0 = any)", "default": 0 }, "minSizeSqft": { "title": "Min Size (sqft)", "minimum": 0, "type": "integer", "description": "Minimum floor area in square feet (0 = any)", "default": 0 }, "maxSizeSqft": { "title": "Max Size (sqft)", "minimum": 0, "type": "integer", "description": "Maximum floor area in square feet (0 = any)", "default": 0 }, "telegramBotToken": { "title": "Telegram Bot Token", "type": "string", "description": "Your Telegram bot token from @BotFather. The bot will send new listing alerts to your chat. Leave empty for testing — alerts will be skipped." }, "telegramChatId": { "title": "Telegram Chat ID", "type": "string", "description": "Your Telegram chat ID (numeric). Message @userinfobot to get yours. Leave empty for testing." }, "alertOnPriceDrop": { "title": "Alert on Price Drops", "type": "boolean", "description": "Send an alert when a previously seen listing drops in price", "default": true }, "proxyConfiguration": { "title": "Proxy configuration", "type": "object", "description": "Select proxy configuration for scraping. Residential proxies help bypass site blocking." } } }, "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 } } }, "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 } } } } } } } } } } ```