# 小火花 > A unified AI API gateway with model discovery, API access, account billing and usage tracking. This document describes the site's public resources. Model availability, supported endpoints and prices are defined by the current catalog and the caller's account permissions. ## Getting started - [Home](https://modelsell.com/): Platform overview and featured models. - [Model capabilities](https://modelsell.com/model-capabilities): Compare documented model capabilities. ## API access API origin: https://modelsell.com/. For OpenAI-compatible SDK integrations, use https://modelsell.com/v1 as the base URL. Create an API key in your account and authenticate using the format required by the selected endpoint. OpenAI-compatible endpoints use Authorization: Bearer YOUR_API_KEY. Use the exact model identifier from the catalog. Check each model's API documentation for its supported protocol, request parameters and any asynchronous polling steps; endpoints differ between models. Prices and billing units may change. Consult the live pricing page before estimating costs. Account balances, credentials and private usage data are not included in this document. ## Tools and account - [Sign in](https://modelsell.com/sign-in): Access your account. - [Console](https://modelsell.com/console): Account overview; sign-in required. - [AI chat](https://modelsell.com/playground): Try models in the chat playground; sign-in required. - [API keys](https://modelsell.com/keys): Manage API credentials; sign-in required. - [Usage logs](https://modelsell.com/usage-logs/common): Review API consumption and request logs; sign-in required. - [Task logs](https://modelsell.com/usage-logs/task): Review asynchronous generation tasks; sign-in required. - [Balance and top-up](https://modelsell.com/wallet): Manage account credit; sign-in required. - [Billing](https://modelsell.com/billing/monthly): Review monthly billing; sign-in required. ## Optional - [Sitemap](https://modelsell.com/sitemap.xml): Public pages, model details, categories and provider pages discoverable by crawlers. - [Crawler rules](https://modelsell.com/robots.txt): Site crawling policy. - [About](https://modelsell.com/about): Site information. - [Terms of service](https://modelsell.com/user-agreement): Terms for using this service. - [Privacy policy](https://modelsell.com/privacy-policy): Information about data handling.