SandBase gives developers one account and one API key for AI models, data APIs, sandboxes and agents. Its OpenAI Agent Core-compatible API covers more than 2,000 models and APIs across 100-plus platforms, with live per-model prices and pay-as-you-go billing, so an agent can call a language model, search X posts or YouTube transcripts, and run code in an E2B-compatible sandbox without juggling separate keys and bills. Reusable skills package common jobs such as Twitter intelligence, SEO keyword research and company enrichment, and a SKILL.md can be pasted into Claude Code, Codex, Cursor or ChatGPT to set an assistant up on the platform. Sandboxes are free, and eligible data APIs include 100 free calls a day, with model calls billed at listed per-token or per-call rates that are discounted against the providers’ list prices. SandBase suits developers building AI agents that need models, live data and a place to run code behind a single key and a single invoice.