# Docker Hub Image Tracker (`m_ctim/docker-hub-image-tracker`) Actor

Get new or recently updated tags for any public Docker Hub image repository straight from the official Docker Hub API: tag name, digest, architectures, size, and push/pull timestamps. For DevOps teams tracking base-image or dependency updates.

- **URL**: https://apify.com/m\_ctim/docker-hub-image-tracker.md
- **Developed by:** [Timothy Kelvin](https://apify.com/m_ctim) (community)
- **Categories:** Developer tools
- **Stats:** 2 total users, 1 monthly users, 100.0% runs succeeded, 0 bookmarks
- **User rating**: No ratings yet

## Pricing

Pay per usage

This Actor is paid per platform usage. The Actor is free to use, and you only pay for the Apify platform usage, which gets cheaper the higher subscription plan you have.

Learn more: https://docs.apify.com/platform/actors/running/actors-in-store#pay-per-usage

## What's an Apify Actor?

Actors are web data automations that power AI and operations. They run on the Apify platform to scrape websites, process data, connect APIs, and automate workflows.
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.

- **AI agents and MCP clients** — the [Apify MCP server](https://docs.apify.com/integrations/mcp.md) at `https://mcp.apify.com` (remote, streamable HTTP, OAuth on first use).
- **Agentic workflows and local Actor development** — [Agent Skills](https://apify.com/.well-known/agent-skills/index.json) with the [Apify CLI](https://docs.apify.com/cli/docs.md): `npm install -g apify-cli`, then `apify login`.
- **JavaScript/TypeScript projects** — the official [JS/TS client](https://docs.apify.com/api/client/js/docs.md): `npm install apify-client`.
- **Python projects** — the official [Python client](https://docs.apify.com/api/client/python/docs.md): `pip install apify-client`.
- **Any other language** — 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

## Docker Hub Image Tracker

Get new or recently updated tags for any public Docker Hub image
repository straight from the official Docker Hub API: tag name,
digest, architectures, size, and push/pull timestamps.

Built for DevOps teams tracking base-image or dependency updates (new
patch versions, new architecture support, unexpected tag churn)
without polling Docker Hub's web UI by hand.

### Input

```json
{
  "repository": "postgres",
  "daysBack": 7,
  "maxResults": 50
}
```

| Field | Type | Description |
|---|---|---|
| `repository` | string (required) | Docker Hub repository to check, e.g. `"postgres"` or `"node"` for an official image, or `"bitnami/postgresql"` for a namespaced one. No namespace assumes `"library/"` (official images). |
| `daysBack` | number | Only return tags updated within this many days. Default `7`, max `365`. |
| `maxResults` | number | Max tags to return. Default `50`, max `100`. |

### Output

One record per matching tag:

```json
{
  "repository": "library/postgres",
  "tag": "14.24-alpine3.23",
  "digest": "sha256:cb5f94ef6a4b3da2ff52083f974c2d6308fbb665b81dd385f5ad7b391c5e48ac",
  "fullSizeBytes": 114143384,
  "contentType": "image",
  "tagStatus": "active",
  "lastUpdated": "2026-08-16T16:07:26.031693Z",
  "lastPushed": "2026-08-16T16:07:26.031693Z",
  "lastPulled": "2026-08-17T19:22:39.752395292Z",
  "lastUpdaterUsername": "doijanky",
  "architectures": ["amd64", "arm64", "arm", "386", "ppc64le", "s390x"],
  "dockerHubUrl": "https://hub.docker.com/r/library/postgres/tags?name=14.24-alpine3.23"
}
```

An unknown repository name returns a clear error rather than an empty
result, so a typo isn't silently mistaken for "no updates."

### How it works

Direct calls to the official [Docker Hub API](https://hub.docker.com/v2/repositories)
(the same API Docker Hub's own website uses) — no proxy, no key, no
scraping. Public registry metadata for any public repository.

### Pricing note

Billed per **search** (one repository check), not per tag returned —
one charge whether the search returns 0 tags or 100.

### Related products

- [npm Package Tracker](https://github.com/timmKal01/npm-package-tracker) — release/deprecation events for npm packages
- [PyPI Download Stats Tracker](https://github.com/timmKal01/pypi-download-stats-tracker) — download-trend counterpart for PyPI packages

# Actor input Schema

## `repository` (type: `string`):

Docker Hub repository to check, e.g. "postgres" or "node" for an official image, or "bitnami/postgresql" for a namespaced one. If no namespace is given, "library/" (official images) is assumed.

## `daysBack` (type: `integer`):

Only return tags whose last\_updated timestamp falls within this many days.

## `maxResults` (type: `integer`):

Maximum number of tags to return.

## Actor input object example

```json
{
  "repository": "node",
  "daysBack": 7,
  "maxResults": 50
}
```

# Actor output Schema

## `results` (type: `string`):

No description

# 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 '<YOUR_API_TOKEN>' with your token
const client = new ApifyClient({
    token: '<YOUR_API_TOKEN>',
});

// Prepare Actor input
const input = {
    "repository": "node"
};

// Run the Actor and wait for it to finish
const run = await client.actor("m_ctim/docker-hub-image-tracker").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 '<YOUR_API_TOKEN>' with your token.
client = ApifyClient("<YOUR_API_TOKEN>")

# Prepare the Actor input
run_input = { "repository": "node" }

# Run the Actor and wait for it to finish
run = client.actor("m_ctim/docker-hub-image-tracker").call(run_input=run_input)

# Fetch and print Actor results from the run's dataset (if there are any)
print(f"💾 Check your data here: https://console.apify.com/storage/datasets/{run.default_dataset_id}")
for item in client.dataset(run.default_dataset_id).iterate_items():
    print(item)

# 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/python/docs/quick-start

```

## CLI example

```bash
echo '{
  "repository": "node"
}' |
apify call m_ctim/docker-hub-image-tracker --silent --output-dataset

```

## MCP server setup

```json
{
    "mcpServers": {
        "apify": {
            "type": "http",
            "url": "https://mcp.apify.com/?tools=fetch-actor-details,m_ctim/docker-hub-image-tracker"
        }
    }
}

```

The hosted server signs you in with OAuth on first connect, so no API token belongs in this config. Clients without OAuth support can send an `Authorization: Bearer <APIFY_API_TOKEN>` header instead, using a token from API & Integrations in Apify Console (https://console.apify.com/settings/integrations).

## OpenAPI specification

Download the OpenAPI definition: https://api.apify.com/v2/actors/kg3d2RzUHnPthkgOS/builds/RIG2uy7SMUaUd8dnm/openapi.json