Deterministic validation for AI-generated artifacts: JSON Schema, OpenAPI response, SQL. Typed verdicts with fix hints. Metered API + MCP.
Setup
Choose your client, copy the config, then fill in any required environment variables.
Local
claude mcp add validate --env SANDBOX_API_KEY='<SANDBOX_API_KEY>' -- npx -y @machinegrade/validate~/.codex/config.toml
[mcp_servers.validate]
command = "npx"
args = ["-y", "@machinegrade/validate"]
env = { SANDBOX_API_KEY = "<SANDBOX_API_KEY>" }
# codex mcp add validate --env SANDBOX_API_KEY='<SANDBOX_API_KEY>' -- npx -y @machinegrade/validate~/.cursor/mcp.json
{
"mcpServers": {
"validate": {
"command": "npx",
"args": [
"-y",
"@machinegrade/validate"
],
"env": {
"SANDBOX_API_KEY": "<SANDBOX_API_KEY>"
}
}
}
}.vscode/mcp.json
{
"servers": {
"validate": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@machinegrade/validate"
],
"env": {
"SANDBOX_API_KEY": "<SANDBOX_API_KEY>"
}
}
}
}~/.gemini/settings.json
{
"mcpServers": {
"validate": {
"command": "npx",
"args": [
"-y",
"@machinegrade/validate"
],
"env": {
"SANDBOX_API_KEY": "<SANDBOX_API_KEY>"
}
}
}
}claude_desktop_config.json
{
"mcpServers": {
"validate": {
"command": "npx",
"args": [
"-y",
"@machinegrade/validate"
],
"env": {
"SANDBOX_API_KEY": "<SANDBOX_API_KEY>"
}
}
}
}.trae/mcp.json
{
"mcpServers": {
"validate": {
"command": "npx",
"args": [
"-y",
"@machinegrade/validate"
],
"env": {
"SANDBOX_API_KEY": "<SANDBOX_API_KEY>"
}
}
}
}Remote
claude mcp add --transport http validate https://api.machinegrade.dev/mcp~/.codex/config.toml
[mcp_servers.validate]
url = "https://api.machinegrade.dev/mcp"
# codex mcp add validate --url https://api.machinegrade.dev/mcp~/.cursor/mcp.json
{
"mcpServers": {
"validate": {
"url": "https://api.machinegrade.dev/mcp"
}
}
}.vscode/mcp.json
{
"servers": {
"validate": {
"type": "http",
"url": "https://api.machinegrade.dev/mcp"
}
}
}~/.gemini/settings.json
{
"mcpServers": {
"validate": {
"httpUrl": "https://api.machinegrade.dev/mcp"
}
}
}claude_desktop_config.json · Customize › Connectors › Add custom connector
{
"mcpServers": {
"validate": {
"command": "npx",
"args": [
"-y",
"mcp-remote",
"https://api.machinegrade.dev/mcp"
]
}
}
}.trae/mcp.json
{
"mcpServers": {
"validate": {
"url": "https://api.machinegrade.dev/mcp"
}
}
}Environment variables
SANDBOX_API_KEY
Replace the placeholders with your own credentials and keep them out of version control.