Perspective vs TensorFeed

Perspective API, built by Google's Jigsaw team, scores text for toxicity, insults, threats, and related attributes using ML models trained on human-rated comments, returning probabilities from a JSON REST endpoint (commentanalyzer.googleapis.com). It's free and quota-gated rather than metered, but Google has announced the service will be shut down after 2026 and is only accepting quota-increase requests through February 2026. New integrations should plan for a different moderation provider before then, since Google has said it won't offer direct migration support.

TensorFeed is a free, no-auth JSON API for AI-industry data: real-time model pricing, provider status/outage monitoring (polled every 2 minutes), AI news, and agent-activity feeds, plus an in-browser API playground for every free endpoint. It also publishes an x402-based Premium Agent API (USDC on Base, no accounts or keys) for ranked model-routing recommendations, and self-certifies under its own "Agent Fair-Trade" standard with Ed25519-signed receipts and code-enforced no-charge on failed calls. Live-checked in July 2026: the site, its free endpoints, and CORS support are all confirmed working.