Unit 10 · React safely to live events

Separate incoming updates from agent work

You treat delivery and model execution as separate decisions. A resource subscription receives updates but never grants an agent permission to run.

7 focused minutesNot started

Unit example (nearest native match)

See the idea in context

auto source=std::make_shared<axllm::AxMCPEventSource>(client,"inventory","tenant:demo","authenticated",axllm::AxMCPResourceSubscriptionPolicy::all());
runtime.register_target(std::move(target)).add_source(source).start();
if(!changed.wait_for(lock,std::chrono::seconds(60),[&]{return complete;}))throw std::runtime_error("Timed out waiting for an MCP resource notification");

Discover the endpoint
The live catalog identifies concrete resources and supported event capabilities.
Apply subscription policy
Your application chooses which updates it actually wants.
Route through the inbox
An explicit event route decides whether the update only records state or wakes work.

Run itIn your own project

include(FetchContent)
FetchContent_Declare(axllm GIT_REPOSITORY https://github.com/ax-llm/ax GIT_TAG main SOURCE_SUBDIR packages/cpp)
FetchContent_MakeAvailable(axllm)
target_link_libraries(your_app PRIVATE axllm::axllm)

#include <axllm/axllm.hpp>

auto llm = axllm::ai("openai", axllm::object({{"apiKey", std::getenv("OPENAI_API_KEY")}}));
auto classify = axllm::ax("review:string -> sentiment:class \"positive, negative, neutral\"");

Set OPENAI_APIKEY in your environment before running provider-backed code.

In the ax repo

From a clone of the ax repo:

npm run example -- cpp src/examples/cpp/mcp/resource_wake_agent.cpp

Active practice

Show that you can use it

Answer 2 in a row to learn this · attempt 1

Keep exploring

See the idea in context

Show that you can use it

Source-backed follow-up