Interactive diagnostics
Diagnose the configuration, not just the symptom.
Focused tools for AI coding-agent setup and failures. Each diagnostic explains its privacy boundary, supported scope, and next troubleshooting step.
MCP Config Validator
Check MCP JSON configuration syntax and common command, args, env, npx, and Windows path risks locally in your browser.
Validation runs in this browser tab. Configuration text is not uploaded or stored by the validator. →AI coding agents · Browser toolAgent PATH Inspector
Inspect a copied Windows, WSL, macOS, or Linux PATH for duplicates, empty entries, quoting, delimiter, and mixed-namespace risks.
PATH analysis runs in this browser tab. The pasted value is not uploaded or stored. →AI coding agents · Browser toolWindows Command Resolver
Compare pasted where.exe and PowerShell Get-Command results to find stale shims, duplicate installs, and executable precedence conflicts.
Command-output analysis runs locally in this browser tab. Remove usernames and private paths before sharing results. →Codex · Browser toolCodex Error Log Parser
Match pasted Codex logs to known exact-error branches and source-linked troubleshooting pages without uploading the log.
Parsing runs locally in this browser tab. Logs are not uploaded or stored; redact secrets and personal paths first. →Codex · Browser toolTOML Path Escape Checker
Check Codex config.toml snippets for unsafe Windows backslashes, mixed WSL paths, duplicate keys, and unexpanded placeholders.
TOML checks run locally in this browser tab. The snippet is not uploaded or stored. →AgentFix diagnostics are only for installing, configuring, running, debugging, and improving coding agents. This is not a collection of generic developer utilities.