# GB Pesticide Active Substance Approval Change Signals (`starshaped_bullsnake/gb-pesticide-active-substance-approval-change-signals`) Actor

Monitor official HSE GB active-substance approval records and emit factual changes.

- **URL**: https://apify.com/starshaped\_bullsnake/gb-pesticide-active-substance-approval-change-signals.md
- **Developed by:** [Starshape Tools](https://apify.com/starshaped_bullsnake) (community)
- **Categories:** Other
- **Stats:** 2 total users, 1 monthly users, 100.0% runs succeeded, 0 bookmarks
- **User rating**: No ratings yet

## Pricing

from $30.00 / 1,000 gb pesticide active-substance approval change signals

This Actor is paid per event. You are not charged for the Apify platform usage, but only a fixed price for specific events.

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

## What's an Apify Actor?

An Actor is a serverless cloud program that runs on the Apify platform. It has two run modes.
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.

Apify vocabulary and the platform model are defined once, in the agent quickstart at https://apify.com/agents.md.

## 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.

Do not guess an integration path. Every one of them is in the agent quickstart at https://apify.com/agents.md: the Apify MCP server, Agent Skills with the Apify CLI, the JavaScript and Python clients, the REST API, and the account-free path for an agent with no human to sign in. It also carries the rule on stating cost before the first paid run.

For examples already wired to this Actor's own input schema, see the [API](#api) section below.

Each client library has reference documentation the quickstart does not restate: [JavaScript/TypeScript](https://docs.apify.com/api/client/js/docs.md) (`npm install apify-client`) and [Python](https://docs.apify.com/api/client/python/docs.md) (`pip install apify-client`).

# README

## GB Pesticide Active Substance Approval Change Signals

Monitors the official HSE GB Pesticides Approvals Register and emits factual changes to active-substance approval records.

The first valid live run stores a full baseline and emits no signals. Later runs compare the complete validated register and can emit `APPROVAL_ADDED`, `APPROVAL_REMOVED`, `APPROVAL_EXPIRY_CHANGED`, `APPROVAL_CONDITIONS_CHANGED`, and `APPROVAL_DETAILS_CHANGED`. `maxItems` limits Dataset output only; it never truncates the stored snapshot.

The stable key is built from the normalized substance name plus the source-native `Basic substance` and `Low-risk a.s.` approval-type flags. This combination was unique across all 356 current approval rows in the August 2026 workbook. Source anomalies, missing headers, duplicate keys, and implausible row-count collapses fail closed before diffing or snapshot mutation.

Sample mode is deterministic, uses synthetic records, makes no HSE requests, and does not access the production key-value store.

Source: [HSE GB Pesticides Approvals Register](https://www.hse.gov.uk/pesticides/active-substances/register.htm).

Contains public sector information licensed under the Open Government Licence v3.0. Source: Health and Safety Executive (HSE), GB Pesticides Approvals Register.

This Actor reports source changes and does not infer product withdrawal, product legality, risk, commercial impact, or renewal outcomes.

# Actor input Schema

## `mode` (type: `string`):

Use live HSE data or deterministic sample fixtures.

## `signalTypes` (type: `array`):

Optional exact signal-type filter.

## `substances` (type: `array`):

Optional exact, case-insensitive substance-name filter.

## `baselineOnly` (type: `boolean`):

Store a validated live baseline without emitting signals.

## `maxItems` (type: `integer`):

Caps Dataset output only; the full validated snapshot is always stored.

## Actor input object example

```json
{
  "mode": "sample",
  "baselineOnly": false,
  "maxItems": 20
}
```

# Actor output Schema

## `OUTPUT` (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 = {
    "mode": "sample",
    "maxItems": 20
};

// Run the Actor and wait for it to finish
const run = await client.actor("starshaped_bullsnake/gb-pesticide-active-substance-approval-change-signals").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 = {
    "mode": "sample",
    "maxItems": 20,
}

# Run the Actor and wait for it to finish
run = client.actor("starshaped_bullsnake/gb-pesticide-active-substance-approval-change-signals").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 '{
  "mode": "sample",
  "maxItems": 20
}' |
apify call starshaped_bullsnake/gb-pesticide-active-substance-approval-change-signals --silent --output-dataset

```

## MCP server setup

```json
{
    "mcpServers": {
        "apify": {
            "type": "http",
            "url": "https://mcp.apify.com/?tools=fetch-actor-details,starshaped_bullsnake/gb-pesticide-active-substance-approval-change-signals"
        }
    }
}
```

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/uzUZvyJwE8JRpbHR5/builds/sojHF5TL3sadyouMt/openapi.json