Analyze Comment Toxicity with Perspective API

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Use this extension to get toxicity scores from Perspective API for comments written to a Cloud Firestore collection.

This extension runs Perspective API on the text field and collection you configure. The API uses machine learning models to score the perceived impact a comment might have on a conversation by evaluating that comment across a range of emotional concepts, called attributes. When you install this extension, you will specify the attributes you want to receive scores for. Perspective's main attribute is TOXICITY, defined as "a rude, disrespectful, or unreasonable comment that is likely to make you leave a discussion". See a list of all available attributes on our developer site. Scores are retrieved when a new document is added to your collection or an existing document is modified.

Additional setup

Before you can use this extension, you will need to enable Perspective API. Follow the instructions on our Get Started page to request API access and then enable the API and create an API key .

By default, you're granted quota for 1 query per second (QPS) to Perspective API. For additional QPS, fill out a quota increase request as needed.

Note: If you add or update documents at a rate higher than your allotted QPS, you may exceed quota and the extension will fail to score your documents.

Billing

Perspective API is free for all amounts of quota. However, the extension uses Firebase and Google Cloud Platform services which may have associated charges, including:

• Cloud Firestore
• Cloud Functions

When you use Firebase Extensions, you're only charged for the underlying resources that you use. A paid-tier billing plan is only required if the extension uses a service that requires a paid-tier plan, for example calling to a Google Cloud API or making outbound network requests to non-Google services. All Firebase services offer a free tier of usage. Learn more about Firebase billing.