I built the tool StackOne's CEO said every developer needs

Source: Dev.to

I wasted 30 minutes debugging my AI agent last month. Stepped through the orchestration code, checked the prompt, Wrong BambooHR subdomain. Silent redirect. isError: false. StackOne’s CEO posted about this exact problem — test your The 3 bugs that motivated this Bug 1 — Accept header application/json and text/event-stream in the Accept header. Miss one and it Bug 2 — Silent BambooHR failure isError: false and HTTP 200 — but the employee never Bug 3 — Wrong Slack tool name slack_post_message. StackOne uses slack_send_message. Never assume tool names match the tools/list first. What I built StackOne Agent Playground — 4 features, one goal: test RPC Tool Tester Token Visualizer Workflow Simulator Defender Tester One bug I hit building this // This throws a runtime error in Vite import { ToolCallResult } from ’../types’

// This is correct — interfaces are type-only import type { ToolCallResult } from ’../types’

Classic TypeScript + Vite gotcha. import type tells Vite Try it git clone https://github.com/prathyushak828/stackone-agent-playground cd stackone-agent-playground npm install cp .env.example .env npm run dev

No backend. Mock mode works without any credentials. GitHub: https://github.com/prathyushak828/stackone-agent-playground Previous: AI Employee Onboarding Agent