# UUID Generator (`rl1987/uuid-generator`) Actor Generate bulk universally unique identifiers (UUID v1, v3, v4, v5, v7) on demand. Export as JSON, CSV, Excel or plain text. - **URL**: https://apify.com/rl1987/uuid-generator.md - **Developed by:** [R.L.](https://apify.com/rl1987) (community) - **Categories:** Developer tools, Automation, Integrations - **Stats:** 2 total users, 1 monthly users, 100.0% runs succeeded, 0 bookmarks - **User rating**: No ratings yet ## Pricing from $0.01 / actor invocation 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.md): ```bash npm install apify-client ``` In Python projects, use official [Python client library](https://docs.apify.com/api/client/python.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/platform/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 ### What does UUID Generator do? **UUID Generator** creates **universally unique identifiers (UUIDs)** on demand, in bulk, directly on the Apify platform. It supports **UUID versions 1, 3, 4, 5 and 7** following the [RFC 9562](https://www.rfc-editor.org/rfc/rfc9562) standard (the successor to RFC 4122), so you get spec-compliant identifiers every time — no custom scripts required. Generate anywhere from a single UUID to **one million in one run**, then download them as **JSON, CSV, Excel, or plain text**, or pull them straight from the [Apify API](https://docs.apify.com/api/v2). Because it runs on Apify, you also get scheduling, integrations (Make, Zapier, n8n, webhooks), and programmatic access out of the box. ### Why use UUID Generator? - **Stop reinventing UUID scripts.** Reusable, hosted, and callable from any language via the API. - **Seed test data and databases.** Generate primary keys, fixtures, and mock records for QA and load testing. - **Build microservices and distributed systems.** Produce correlation IDs, request IDs, and entity keys at scale. - **Deterministic IDs when you need them.** Versions 3 and 5 turn the same name into the same UUID every time — ideal for idempotent keys derived from domains, URLs, or other stable inputs. - **Sortable identifiers.** Version 7 is time-ordered, so IDs sort chronologically — great for database indexes. ### How to use UUID Generator 1. Click **Try for free** / **Start**. 2. Pick a **UUID version** (v4 random is the default and the most common choice). 3. Set the **Count** for how many you want (or, for v3/v5, fill in the **Names** list). 4. Optionally toggle **Uppercase**, **Include hyphens**, or the **plain-text file** output. 5. Click **Save & Start**. When the run finishes, open the **Output** tab to view, or **Export** the dataset as JSON/CSV/Excel. ### Input Configure the run from the **Input** tab or via the API. All fields are optional except the UUID version (which defaults to `v4`). | Field | Type | Description | |---|---|---| | `version` | string | UUID version: `v1`, `v3`, `v4`, `v5`, or `v7`. Default `v4`. | | `count` | integer | How many UUIDs to generate (v1, v4, v7). Default `10`, max `1,000,000`. | | `macAddress` | string | (v1 only) Optional MAC address to use as the node, e.g. `00:1a:2b:3c:4d:5e`. Leave empty for a random node. | | `names` | array | List of names to hash (required for v3 / v5). One UUID is produced per name. | | `namespaceType` | string | Namespace for v3 / v5: `dns`, `url`, `oid`, `x500`, or `custom`. Default `dns`. | | `customNamespace` | string | A custom namespace UUID, used when `namespaceType` is `custom`. | | `uppercase` | boolean | Output uppercase letters. Default `false`. | | `hyphens` | boolean | Include standard hyphens. Disable for compact 32-char hex. Default `true`. | | `savePlainText` | boolean | Also save `uuids.txt` to the key-value store. Default `true`. | #### Example input ```json { "version": "v4", "count": 1000, "uppercase": false, "hyphens": true } ```` Name-based (deterministic) example: ```json { "version": "v5", "namespaceType": "dns", "names": ["example.com", "apify.com"] } ``` ### Output Each generated UUID is stored as a separate item in the run's dataset. You can download the dataset in various formats such as **JSON, HTML, CSV, or Excel**. When `savePlainText` is enabled, a newline-separated `uuids.txt` file is also written to the default key-value store. #### Example output ```json [ { "uuid": "4e7788c6-f084-4734-b65f-65bcbb3b968f", "version": "v4", "index": 0 }, { "uuid": "0cf1742f-7ffd-412b-896f-5498f6f41344", "version": "v4", "index": 1 } ] ``` For name-based versions, each item also includes the source `name` and the `namespace` UUID used. #### Data table | Field | Description | |---|---| | `uuid` | The generated UUID string (formatted per your options). | | `version` | The UUID version that produced it (`v1`–`v7`). | | `index` | Zero-based position within the run. | | `name` | (v3/v5 only) The source name that was hashed. | | `namespace` | (v3/v5 only) The namespace UUID used. | ### How much does it cost? This Actor uses a simple **pay-per-event** price: a flat **$0.01 per run**, charged once each time you start the Actor — no matter whether you generate one UUID or a million. There is no per-result fee and no separate platform-usage charge to reason about, so the cost of a run is completely predictable. The Actor runs at the platform's minimum memory (128 MB) and finishes in seconds for typical batches. ### Tips and advanced options - **Need sortable IDs for a database?** Use `v7` — identifiers are time-ordered and index-friendly. - **Need the same ID for the same input?** Use `v3` or `v5` with a fixed namespace and names; the output is fully deterministic. - **Want compact IDs?** Set `hyphens` to `false` for a 32-character hex string. - **Big batches:** raise `count` (up to 1,000,000). Items are pushed in batches for efficiency. - **Automate it:** schedule recurring runs or call the Actor from your own code with the Apify API/SDK to generate IDs on demand. ### FAQ, disclaimers, and support **Which version should I pick?** Use **v4** (random) unless you have a specific need: **v7** for sortable IDs, **v1** for timestamp-based IDs, **v3/v5** for deterministic name-based IDs. **Can I control the MAC address in v1 UUIDs?** Yes. Set the `macAddress` input to embed a specific node, e.g. `00:1a:2b:3c:4d:5e`. If you leave it empty, the Actor randomizes the node (and always randomizes the clock sequence), so v1 UUIDs never leak the host's real hardware address. **Are the UUIDs cryptographically random?** Versions 4 and 7 use the system CSPRNG (Python's `secrets`), making them suitable for unpredictable identifiers. UUIDs are not a substitute for secret tokens, however. **Found a bug or have a feature request?** Open an issue on the Actor's **Issues** tab. Custom solutions and tweaks are available on request. # Actor input Schema ## `version` (type: `string`): Which UUID version to generate. v1 is timestamp-based, v4 is random (most common), v7 is time-ordered and sortable, while v3 and v5 are name-based (deterministic) and require a namespace and names. ## `count` (type: `integer`): How many UUIDs to generate. Used by versions v1, v4 and v7. For the name-based versions (v3, v5) the count is determined by the number of entries in "Names". ## `macAddress` (type: `string`): Optional MAC address used as the node field of version 1 UUIDs. Accepts colon, hyphen, or dot separators, or 12 bare hex digits (e.g. 00:1a:2b:3c:4d:5e). If left empty, a random node is used so the host MAC is never leaked. Ignored for other versions. ## `namespaceType` (type: `string`): The namespace used by the name-based versions v3 and v5. Choose one of the standard RFC 9562 namespaces, or "custom" to supply your own namespace UUID. ## `customNamespace` (type: `string`): A custom namespace UUID to use when "Namespace" is set to "custom". Must be a valid UUID string, e.g. 6ba7b810-9dad-11d1-80b4-00c04fd430c8. ## `names` (type: `array`): The list of names to hash into UUIDs for the name-based versions v3 and v5. One deterministic UUID is produced per name within the chosen namespace. ## `uppercase` (type: `boolean`): Output UUIDs in uppercase letters (e.g. 9B1DEB4D-... instead of 9b1deb4d-...). ## `hyphens` (type: `boolean`): Include the standard hyphens in the UUID string. Disable to output a compact 32-character hex form without dashes. ## `savePlainText` (type: `boolean`): Also save all generated UUIDs as a newline-separated plain-text file (uuids.txt) in the default key-value store, in addition to the dataset. ## Actor input object example ```json { "version": "v4", "count": 10, "macAddress": "00:1a:2b:3c:4d:5e", "namespaceType": "dns", "customNamespace": "6ba7b810-9dad-11d1-80b4-00c04fd430c8", "names": [ "example.com", "apify.com" ], "uppercase": false, "hyphens": true, "savePlainText": true } ``` # 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 = { "names": [ "example.com", "apify.com" ] }; // Run the Actor and wait for it to finish const run = await client.actor("rl1987/uuid-generator").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 = { "names": [ "example.com", "apify.com", ] } # Run the Actor and wait for it to finish run = client.actor("rl1987/uuid-generator").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 '{ "names": [ "example.com", "apify.com" ] }' | apify call rl1987/uuid-generator --silent --output-dataset ``` ## MCP server setup ```json { "mcpServers": { "apify": { "command": "npx", "args": [ "mcp-remote", "https://mcp.apify.com/?tools=rl1987/uuid-generator", "--header", "Authorization: Bearer " ] } } } ``` ## OpenAPI specification ```json { "openapi": "3.0.1", "info": { "title": "UUID Generator", "description": "Generate bulk universally unique identifiers (UUID v1, v3, v4, v5, v7) on demand. Export as JSON, CSV, Excel or plain text.", "version": "1.1", "x-build-id": "6XeMdRZ24i5O3q5y8" }, "servers": [ { "url": "https://api.apify.com/v2" } ], "paths": { "/acts/rl1987~uuid-generator/run-sync-get-dataset-items": { "post": { "operationId": "run-sync-get-dataset-items-rl1987-uuid-generator", "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": { "$ref": "#/components/schemas/inputSchema" } } } }, "parameters": [ { "name": "token", "in": "query", "required": true, "schema": { "type": "string" }, "description": "Enter your Apify token here" } ], "responses": { "200": { "description": "OK" } } } }, "/acts/rl1987~uuid-generator/runs": { "post": { "operationId": "runs-sync-rl1987-uuid-generator", "x-openai-isConsequential": false, "summary": "Executes an Actor and returns information about the initiated run in response.", "tags": [ "Run Actor" ], "requestBody": { "required": true, "content": { "application/json": { "schema": { "$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": { "$ref": "#/components/schemas/runsResponseSchema" } } } } } } }, "/acts/rl1987~uuid-generator/run-sync": { "post": { "operationId": "run-sync-rl1987-uuid-generator", "x-openai-isConsequential": false, "summary": "Executes an Actor, waits for completion, and returns the OUTPUT from Key-value store in response.", "tags": [ "Run Actor" ], "requestBody": { "required": true, "content": { "application/json": { "schema": { "$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": [ "version" ], "properties": { "version": { "title": "UUID version", "enum": [ "v1", "v3", "v4", "v5", "v7" ], "type": "string", "description": "Which UUID version to generate. v1 is timestamp-based, v4 is random (most common), v7 is time-ordered and sortable, while v3 and v5 are name-based (deterministic) and require a namespace and names.", "default": "v4" }, "count": { "title": "Count", "minimum": 1, "maximum": 1000000, "type": "integer", "description": "How many UUIDs to generate. Used by versions v1, v4 and v7. For the name-based versions (v3, v5) the count is determined by the number of entries in \"Names\".", "default": 10 }, "macAddress": { "title": "MAC address (for v1)", "type": "string", "description": "Optional MAC address used as the node field of version 1 UUIDs. Accepts colon, hyphen, or dot separators, or 12 bare hex digits (e.g. 00:1a:2b:3c:4d:5e). If left empty, a random node is used so the host MAC is never leaked. Ignored for other versions." }, "namespaceType": { "title": "Namespace (for v3 / v5)", "enum": [ "dns", "url", "oid", "x500", "custom" ], "type": "string", "description": "The namespace used by the name-based versions v3 and v5. Choose one of the standard RFC 9562 namespaces, or \"custom\" to supply your own namespace UUID.", "default": "dns" }, "customNamespace": { "title": "Custom namespace UUID", "type": "string", "description": "A custom namespace UUID to use when \"Namespace\" is set to \"custom\". Must be a valid UUID string, e.g. 6ba7b810-9dad-11d1-80b4-00c04fd430c8." }, "names": { "title": "Names (for v3 / v5)", "type": "array", "description": "The list of names to hash into UUIDs for the name-based versions v3 and v5. One deterministic UUID is produced per name within the chosen namespace.", "items": { "type": "string" } }, "uppercase": { "title": "Uppercase", "type": "boolean", "description": "Output UUIDs in uppercase letters (e.g. 9B1DEB4D-... instead of 9b1deb4d-...).", "default": false }, "hyphens": { "title": "Include hyphens", "type": "boolean", "description": "Include the standard hyphens in the UUID string. Disable to output a compact 32-character hex form without dashes.", "default": true }, "savePlainText": { "title": "Save plain-text file", "type": "boolean", "description": "Also save all generated UUIDs as a newline-separated plain-text file (uuids.txt) in the default key-value store, in addition to the dataset.", "default": 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 } } }, "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 } } } } } } } } } } ```