Fix AI Tool Call ID Duplicated Errors: Complete Troubleshooting Guide

★Tool Call ID Duplicated Error: A Complete Troubleshooting Guide for AI Coding Assistants★ If you’ve been using an AI coding assistant and suddenly ran into this error: HTTP 400: Invalid request: tool call id exec:29 is duplicated Take a breath. It looks intimidating, but the root cause is actually straightforward. This guide walks you through exactly why it happens, how to track it down, and how to fix it — without needing to touch any source code. What Does This Error Actually Mean? When an AI assistant helps you complete tasks, it calls various tools behind the scenes — running …