# UK MHRA Medicine and Device Alert Watch (`nexgenwatch/uk-mhra-medicine-device-alert-watch`) Actor

MHRA drug and device safety alerts as published on GOV.UK: alert title, publication timestamp and summary, keyed on the source-native GOV.UK path. LISTING SCOPE: it watches the alert index. It does not open the alert page or interpret the c

- **URL**: https://apify.com/nexgenwatch/uk-mhra-medicine-device-alert-watch.md
- **Developed by:** [NexGen Watch](https://apify.com/nexgenwatch) (community)
- **Categories:** Business, News
- **Stats:** 2 total users, 1 monthly users, 100.0% runs succeeded, 0 bookmarks
- **User rating**: No ratings yet

## Pricing

from $33.50 / 1,000 alert deltas

This Actor is paid per event. You are not charged for the Apify platform usage, but only a fixed price for specific events.
Since this Actor supports Apify Store discounts, the price gets lower the higher subscription plan you have.

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

## 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

## UK MHRA Medicine and Device Alert Watch

MHRA drug and device safety alerts as published on GOV.UK: alert title, publication timestamp and summary, keyed on the source-native GOV.UK path. LISTING SCOPE: it watches the alert index. It does not open the alert page or interpret the clinical advice inside it.

### Source

GOV.UK Search API, medical\_safety\_alert documents (public, logged-out)

- https://www.gov.uk/api/search.json?filter\_content\_store\_document\_type=medical\_safety\_alert

Public, logged-out only — no API key, login, cookie or CAPTCHA.

### Pricing

| Event | Price (FREE tier) |
|---|---|
| Actor start (`apify-actor-start`) | $0.02 one-time |
| Source check (`source-check`) | $0.10 |
| **Per delta (`alert-delta`)** | **$0.05** |

`source-check` ladder, GOLD-floored: **$0.10 / $0.09 / $0.08 / $0.067**, charged
once per run after enumeration terminates — seed and genuine-zero runs included.
The per-delta value event (`alert-delta`) is the **primary** event and is priced at **$0.05 per delta** at the FREE tier. Ladder, GOLD-floored: **$0.05 / $0.045 / $0.04 / $0.0335** (FREE / BRONZE / SILVER / GOLD-PLATINUM-DIAMOND). `source-check` still charges; it is no longer the headline event. Billed deltas are capped at 500 per run and any overflow is reported as a withholding rather than charged.

### Snapshot mode is a PREVIEW

`watch_mode: false` returns at most **25 records**, hard-capped in code regardless
of `max_items`, labeled `output_mode: "preview"`. This cell sells change detection,
not bulk record export.

### Watch semantics

First watch run stores a private baseline and emits **zero** deltas. Later runs emit
`NEW` / `CHANGED` / `REMOVED` keyed on the source-native id with `before` / `after`
and `changed_fields`.

### Source cadence

MHRA posts alerts on business days — 1,422 were indexed on the measured date, the newest 2026-07-23. Several can land on one day and a week can pass with none.

### Terminal states

`NORMAL` · `SUCCEEDED-0: GENUINE_EMPTY` · `SUCCEEDED-0` (no change) · `PARTIAL` · `BLOCKED`.
A zero with no evidence FAILS loud rather than exiting 0 quietly.

# Actor input Schema

## `count` (type: `integer`):

Most recent alerts to read (GOV.UK caps a page at 1000).

## `title_contains` (type: `array`):

Optional substrings matched against the alert title, e.g. 'Class 4'.

## `watch_mode` (type: `boolean`):

First run seeds a private baseline and emits ZERO deltas.

## `baseline_id` (type: `string`):

Names the private baseline.

## `max_items` (type: `integer`):

Hard cap on alerts processed.

## Actor input object example

```json
{
  "count": 25,
  "title_contains": [],
  "watch_mode": true,
  "baseline_id": "default",
  "max_items": 60
}
```

# 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 = {
    "count": 25,
    "title_contains": [],
    "watch_mode": false,
    "baseline_id": "default",
    "max_items": 60
};

// Run the Actor and wait for it to finish
const run = await client.actor("nexgenwatch/uk-mhra-medicine-device-alert-watch").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 = {
    "count": 25,
    "title_contains": [],
    "watch_mode": False,
    "baseline_id": "default",
    "max_items": 60,
}

# Run the Actor and wait for it to finish
run = client.actor("nexgenwatch/uk-mhra-medicine-device-alert-watch").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 '{
  "count": 25,
  "title_contains": [],
  "watch_mode": false,
  "baseline_id": "default",
  "max_items": 60
}' |
apify call nexgenwatch/uk-mhra-medicine-device-alert-watch --silent --output-dataset

```

## MCP server setup

```json
{
    "mcpServers": {
        "apify": {
            "command": "npx",
            "args": [
                "mcp-remote",
                "https://mcp.apify.com/?tools=nexgenwatch/uk-mhra-medicine-device-alert-watch",
                "--header",
                "Authorization: Bearer <YOUR_API_TOKEN>"
            ]
        }
    }
}

```

## OpenAPI specification

Download the OpenAPI definition: https://api.apify.com/v2/acts/NGVw3xxaGbXXT6hJM/builds/AY2B8gvfceg11tz5c/openapi.json