Paste a developer error, get the real cause and the fix. Offline, zero-dependency explainers for CORS, ESM/CJS, npm ERESOLVE, ChunkLoadError, Postgres/Supabase DATABASE_URL and Next.js build errors.
Setup
Choose your client, copy the config, then fill in any required environment variables.
claude mcp add dev-error-explainers -- npx -y dev-error-explainers~/.codex/config.toml
[mcp_servers.dev-error-explainers]
command = "npx"
args = ["-y", "dev-error-explainers"]
# codex mcp add dev-error-explainers -- npx -y dev-error-explainers~/.cursor/mcp.json
{
"mcpServers": {
"dev-error-explainers": {
"command": "npx",
"args": [
"-y",
"dev-error-explainers"
]
}
}
}.vscode/mcp.json
{
"servers": {
"dev-error-explainers": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"dev-error-explainers"
]
}
}
}~/.gemini/settings.json
{
"mcpServers": {
"dev-error-explainers": {
"command": "npx",
"args": [
"-y",
"dev-error-explainers"
]
}
}
}claude_desktop_config.json
{
"mcpServers": {
"dev-error-explainers": {
"command": "npx",
"args": [
"-y",
"dev-error-explainers"
]
}
}
}.trae/mcp.json
{
"mcpServers": {
"dev-error-explainers": {
"command": "npx",
"args": [
"-y",
"dev-error-explainers"
]
}
}
}