Forgeant is a C++23 agent framework that provides tool use, structured output, and a ReAct-style agent loop across multiple LLM providers — all without leaving C++.

Quick example

#include <forgeant/forgeant.hpp>
 
auto agent = forgeant::Agent::create("anthropic", {
    .api_key = "sk-...",
    .model = "claude-sonnet-4-20250514",
});
 
auto result = agent->run("What is the capital of France?");
std::cout << result.output << std::endl;

Where to look

All classes — full public surface, including forgeant::Agent, forgeant::Tool, and the provider types.
Namespaces — browse by namespace.
Files — browse the headers under include/forgeant/.
Examples — complete runnable programs.

Source and issues

Forgeant is open source under the MIT license. Development happens at github.com/Jimdrews/forgeant.