An agent that calls REST APIs without a single tool definition

The agent needs to call eight vendor APIs: Stripe, Slack, Notion, Linear, the internal one. Classic stack: write eight tool definitions with parameter schemas, register them with the framework, write the dispatcher that maps tool calls to HTTP, write retry logic.

You give the agent one tool: hoody-curl's request endpoint. The instruction is "hit any HTTP endpoint by POSTing to this URL with the target as a parameter." The agent constructs the call: method, headers, json body: and hits curl. The response comes back as JSON. The agent reads it and decides what's next.

Adding a ninth API is zero engineering work. Every LLM was trained on REST API docs. It just needed an HTTP outbound.