Problems / Agents and tools, easy

Policy check on every tool call

Every tool call is authorised by a policy engine with 8 slots and 30 ms per check.

Free to open. Runs in your browser, no sign-up.

Your goals

Success ≥ 95% of tasks, p99 ≤ 90 s.

The traffic

50 requests a second for 45 seconds: 100% task (writes).

The system

What each component does in this design, and what calls it. The simulator mimics each one from these settings.

ComponentIts job hereSettings
Load balancerLoad balancerTraffic enters here.Calls Agent API.Layer 4 balancers route by IP and port; layer 7 balancers read HTTP and can route by path or header.–
Agent APIApp serviceLoad balancer forwards to it.Calls Agent orchestrator.Little's law: throughput ≈ concurrency ÷ latency. 200 slots at 50 ms serve about 4,000 req/s.3 replicas × 500 slots · timeout 180 s
Agent orchestratorAgent orchestratorAgent API calls it.Calls Model, Tool policy engine.An agent loops: think, call a tool, read the result, repeat until done.400 slots · 6 steps
ModelLLM endpointAgent orchestrator calls it.Latency has two parts: time to the first token, then a steady stream of tokens per second.2000 streams
Tool policy engineTool policy engineAgent orchestrator calls it.A policy engine checks each tool call against what this agent, user and data may do.8 slots

Hints

Try it first. Open one hint at a time if you get stuck.

Hint 1

Checks a second = tasks × steps.

Hint 2

Agent work multiplies: tasks a second × steps per task = calls a second on every tool the loop uses.

One way to solve it

Give the policy engine more capacity (and cache decisions).

More agents and tools problems