# Chainyze > LLM call observability for Node apps — log prompts, responses, latency, and enforce monthly quotas before cost spirals. ## Product - [Home](https://chainyze.com/): product overview and quick start - [Pricing](https://chainyze.com/pricing): Free vs Pro call caps and retention - [Docs](https://chainyze.com/docs): launch guides (SDK, Free vs Pro, comparisons) - [Blog](https://chainyze.com/blog): changelog / product notes - [Dashboard](https://chainyze.com/dashboard): signed-in log list (app surface) - [llms-full.txt](https://chainyze.com/llms-full.txt): expanded machine context ## What Chainyze does - Ingest async LLM call logs via project API keys - List calls in a dashboard for debugging prompt chains - Hard-stop free-tier traffic when the monthly cap is hit - Optional Stripe Pro upgrade for higher caps and retention ## SDK ``` npm i @chainyze/sdk await chainyze.log({ model, prompt, response, latencyMs }) ``` ## Reference - [Sitemap](https://chainyze.com/sitemap.xml) - [Robots](https://chainyze.com/robots.txt) - Canonical host: https://chainyze.com (www redirects to apex)