I don’t think Akismet’s checkSpam is working properly

We are trying to develop spam comment processing logic through Akismet’s checkSpam, but regardless of what content is in the comment, always returning ‘false’. What am I missing?

Below is the code I wrote to test.

const comment = {
    ip: '192.0.96.247',
    useragent: 'CommentorsAgent 1.0 WebKit',
    content: "Nice",
    email: 'test050505@test.com',
    name: 'test'
}

async function checkSpamComment(comment) {

    try {

        const isSpam = await client.checkSpam(comment)

        if (isSpam) console.log('OMG Spam!')

        else console.log('Totally not spam')

    } catch (err) {

        console.error('Something went wrong:', err.message)

    }

}

checkSpamComment();