OpenAI Agents SDK JavaScript tool boundary

Evidence-backed facts

1. The OpenAI Agents SDK for JavaScript supports hosted tools, local function tools, agents-as-tools, and MCP servers. informative
2. The SDK runner coordinates model requests and calls configured JavaScript functions or remote tool providers rather than the model directly performing side effects. informative
3. Runtime secrets, hosted-tool options, MCP server trust, function context, guardrails, and approval remain developer-controlled boundaries. informative
4. JavaScript SDK compatibility does not prove a tool ran, an action was authorized, a result is true, or a production agent is active. informative

Primary sources