Perspective API alternative:
a drop-in replacement before the 2026 sunset.

import { google } from 'googleapis';

const client = await google.discoverAPI(
  'https://commentanalyzer.googleapis.com/$discovery/rest?version=v1alpha1',
);

const { data } = await client.comments.analyze({
  key: process.env.PERSPECTIVE_API_KEY,
  resource: {
    comment: { text: 'You are an idiot' },
    requestedAttributes: {
      TOXICITY: {},
      SEVERE_TOXICITY: {},
      INSULT: {},
      THREAT: {},
      IDENTITY_ATTACK: {},
    },
  },
});

const toxicity =
  data.attributeScores.TOXICITY.summaryScore.value;

from googleapiclient import discovery
import os

client = discovery.build(
    'commentanalyzer', 'v1alpha1',
    developerKey=os.environ['PERSPECTIVE_API_KEY'],
    discoveryServiceUrl=(
        'https://commentanalyzer.googleapis.com/'
        '$discovery/rest?version=v1alpha1'
    ),
    static_discovery=False,
)

response = client.comments().analyze(body={
    'comment': {'text': 'You are an idiot'},
    'requestedAttributes': {
        'TOXICITY': {}, 'SEVERE_TOXICITY': {},
        'INSULT': {}, 'THREAT': {}, 'IDENTITY_ATTACK': {},
    },
}).execute()

toxicity = (
    response['attributeScores']['TOXICITY']['summaryScore']['value']
)

require 'net/http'
require 'json'

uri = URI(
  "https://commentanalyzer.googleapis.com/v1alpha1/comments:analyze" \
  "?key=#{ENV['PERSPECTIVE_API_KEY']}"
)

response = Net::HTTP.post(
  uri,
  {
    comment: { text: 'You are an idiot' },
    requestedAttributes: {
      TOXICITY: {}, SEVERE_TOXICITY: {},
      INSULT: {}, THREAT: {}, IDENTITY_ATTACK: {},
    },
  }.to_json,
  'Content-Type' => 'application/json',
)

data = JSON.parse(response.body)
toxicity = data['attributeScores']['TOXICITY']['summaryScore']['value']

<?php
$ch = curl_init(
    'https://commentanalyzer.googleapis.com/v1alpha1/comments:analyze'
    . '?key=' . getenv('PERSPECTIVE_API_KEY')
);

curl_setopt_array($ch, [
    CURLOPT_POST => true,
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_HTTPHEADER => ['Content-Type: application/json'],
    CURLOPT_POSTFIELDS => json_encode([
        'comment' => ['text' => 'You are an idiot'],
        'requestedAttributes' => [
            'TOXICITY' => (object) [],
            'SEVERE_TOXICITY' => (object) [],
            'INSULT' => (object) [],
            'THREAT' => (object) [],
            'IDENTITY_ATTACK' => (object) [],
        ],
    ]),
]);

$data = json_decode(curl_exec($ch), true);
$toxicity = $data['attributeScores']['TOXICITY']['summaryScore']['value'];

curl -X POST \
  "https://commentanalyzer.googleapis.com/v1alpha1/comments:analyze?key=$PERSPECTIVE_API_KEY" \
  -H 'Content-Type: application/json' \
  -d '{
    "comment": { "text": "You are an idiot" },
    "requestedAttributes": {
      "TOXICITY": {}, "SEVERE_TOXICITY": {},
      "INSULT": {}, "THREAT": {}, "IDENTITY_ATTACK": {}
    }
  }'