DevOps Helper MCP

Instructions

Implementation Reference

• src/index.js:1292-1385 (handler)

  Primary handler function implementing the tool logic: creates Container Apps environment if needed, deploys the image via az CLI, handles ACR images, retrieves and returns the app FQDN URL.
  let output = ""; const envName = environment || `${app_name}-env`; // Check if environment exists, create if not const envCheck = await runCommand(`az containerapp env show -n ${envName} -g ${resource_group} 2>/dev/null`); if (!envCheck.success) { output += `Creating Container Apps environment: ${envName}...\n`; const envCreate = await runCommand( `az containerapp env create -n ${envName} -g ${resource_group}`, { timeout: 300000 } ); if (!envCreate.success) { return { content: [{ type: "text", text: `Failed to create environment!\n\nError: ${envCreate.stderr || envCreate.error}` }] }; } output += `Environment created.\n\n`; } // Deploy container app output += `Deploying container app: ${app_name}...\n`; // Determine if this is an ACR image const isAcr = image.includes(".azurecr.io"); let registryArgs = ""; if (isAcr) { const acrName = image.split(".")[0]; registryArgs = `--registry-server ${acrName}.azurecr.io`; } const deployCmd = `az containerapp create \\ -n ${app_name} \\ -g ${resource_group} \\ --environment ${envName} \\ --image ${image} \\ --target-port ${port} \\ --ingress external \\ --cpu ${cpu} \\ --memory ${memory} \\ ${registryArgs}`; const deploy = await runCommand(deployCmd.replace(/\\\n/g, " "), { timeout: 300000 }); if (!deploy.success) { return { content: [{ type: "text", text: `Failed to deploy!\n\nError: ${deploy.stderr || deploy.error}\n\nCommand:\n${deployCmd}\n\nCommon issues:\n- Image not found in registry\n- Registry authentication failed\n- Resource quota exceeded` }] }; } // Get the app URL const appUrl = await runCommand(`az containerapp show -n ${app_name} -g ${resource_group} --query properties.configuration.ingress.fqdn -o tsv`); output += ` Deployment successful! APP DETAILS: ------------ Name: ${app_name} Resource Group: ${resource_group} Image: ${image} URL: https://${appUrl.stdout} USEFUL COMMANDS: ---------------- # View logs az containerapp logs show -n ${app_name} -g ${resource_group} --follow # Scale replicas az containerapp update -n ${app_name} -g ${resource_group} --min-replicas 1 --max-replicas 10 # Update image az containerapp update -n ${app_name} -g ${resource_group} --image ${image} # View revisions az containerapp revision list -n ${app_name} -g ${resource_group} -o table ENVIRONMENT VARIABLES: ---------------------- az containerapp update -n ${app_name} -g ${resource_group} \\ --set-env-vars "KEY=value" "DATABASE_URL=secretref:db-url" SECRETS: -------- az containerapp secret set -n ${app_name} -g ${resource_group} \\ --secrets "db-url=your-connection-string"`; return { content: [{ type: "text", text: output }] }; }
• src/index.js:1283-1291 (schema)

  Input schema defining parameters for the azure_container_apps_deploy tool with types, descriptions, and defaults.
  app_name: { type: "string", description: "Container app name" }, resource_group: { type: "string", description: "Resource group name" }, image: { type: "string", description: "Container image (e.g., myacr.azurecr.io/app:latest)" }, environment: { type: "string", description: "Container Apps environment name", default: "" }, port: { type: "number", description: "Container port", default: 8080 }, cpu: { type: "string", description: "CPU cores (0.25, 0.5, 1, 2)", default: "0.5" }, memory: { type: "string", description: "Memory (0.5Gi, 1Gi, 2Gi, 4Gi)", default: "1Gi" } }, async ({ app_name, resource_group, image, environment, port, cpu, memory }) => {
• src/index.js:1280-1386 (registration)

  MCP server.tool registration call that registers the tool with name, description, schema, and handler function.
  "azure_container_apps_deploy", "Deploy container to Azure Container Apps", { app_name: { type: "string", description: "Container app name" }, resource_group: { type: "string", description: "Resource group name" }, image: { type: "string", description: "Container image (e.g., myacr.azurecr.io/app:latest)" }, environment: { type: "string", description: "Container Apps environment name", default: "" }, port: { type: "number", description: "Container port", default: 8080 }, cpu: { type: "string", description: "CPU cores (0.25, 0.5, 1, 2)", default: "0.5" }, memory: { type: "string", description: "Memory (0.5Gi, 1Gi, 2Gi, 4Gi)", default: "1Gi" } }, async ({ app_name, resource_group, image, environment, port, cpu, memory }) => { let output = ""; const envName = environment || `${app_name}-env`; // Check if environment exists, create if not const envCheck = await runCommand(`az containerapp env show -n ${envName} -g ${resource_group} 2>/dev/null`); if (!envCheck.success) { output += `Creating Container Apps environment: ${envName}...\n`; const envCreate = await runCommand( `az containerapp env create -n ${envName} -g ${resource_group}`, { timeout: 300000 } ); if (!envCreate.success) { return { content: [{ type: "text", text: `Failed to create environment!\n\nError: ${envCreate.stderr || envCreate.error}` }] }; } output += `Environment created.\n\n`; } // Deploy container app output += `Deploying container app: ${app_name}...\n`; // Determine if this is an ACR image const isAcr = image.includes(".azurecr.io"); let registryArgs = ""; if (isAcr) { const acrName = image.split(".")[0]; registryArgs = `--registry-server ${acrName}.azurecr.io`; } const deployCmd = `az containerapp create \\ -n ${app_name} \\ -g ${resource_group} \\ --environment ${envName} \\ --image ${image} \\ --target-port ${port} \\ --ingress external \\ --cpu ${cpu} \\ --memory ${memory} \\ ${registryArgs}`; const deploy = await runCommand(deployCmd.replace(/\\\n/g, " "), { timeout: 300000 }); if (!deploy.success) { return { content: [{ type: "text", text: `Failed to deploy!\n\nError: ${deploy.stderr || deploy.error}\n\nCommand:\n${deployCmd}\n\nCommon issues:\n- Image not found in registry\n- Registry authentication failed\n- Resource quota exceeded` }] }; } // Get the app URL const appUrl = await runCommand(`az containerapp show -n ${app_name} -g ${resource_group} --query properties.configuration.ingress.fqdn -o tsv`); output += ` Deployment successful! APP DETAILS: ------------ Name: ${app_name} Resource Group: ${resource_group} Image: ${image} URL: https://${appUrl.stdout} USEFUL COMMANDS: ---------------- # View logs az containerapp logs show -n ${app_name} -g ${resource_group} --follow # Scale replicas az containerapp update -n ${app_name} -g ${resource_group} --min-replicas 1 --max-replicas 10 # Update image az containerapp update -n ${app_name} -g ${resource_group} --image ${image} # View revisions az containerapp revision list -n ${app_name} -g ${resource_group} -o table ENVIRONMENT VARIABLES: ---------------------- az containerapp update -n ${app_name} -g ${resource_group} \\ --set-env-vars "KEY=value" "DATABASE_URL=secretref:db-url" SECRETS: -------- az containerapp secret set -n ${app_name} -g ${resource_group} \\ --secrets "db-url=your-connection-string"`; return { content: [{ type: "text", text: output }] }; } );
• src/tools.js:413-462 (handler)

  Testing/exported version of the handler function (identical logic), exported for unit testing purposes.
  export async function azureContainerAppsDeploy({ app_name, resource_group, image, environment, port, cpu, memory }) { const envName = environment || `${app_name}-env`; let output = ""; const envCheck = await commandRunner(`az containerapp env show -n ${envName} -g ${resource_group} 2>/dev/null`); if (!envCheck.success) { output += `Creating Container Apps environment: ${envName}...\n`; const envCreate = await commandRunner( `az containerapp env create -n ${envName} -g ${resource_group}`, { timeout: 300000 } ); if (!envCreate.success) { return { content: [{ type: "text", text: `Failed to create environment!\n\nError: ${envCreate.stderr || envCreate.error}` }] }; } output += `Environment created.\n\n`; } output += `Deploying container app: ${app_name}...\n`; const isAcr = image.includes(".azurecr.io"); let registryArgs = ""; if (isAcr) { const acrName = image.split(".")[0]; registryArgs = `--registry-server ${acrName}.azurecr.io`; } const deployCmd = `az containerapp create -n ${app_name} -g ${resource_group} --environment ${envName} --image ${image} --target-port ${port} --ingress external --cpu ${cpu} --memory ${memory} ${registryArgs}`; const deploy = await commandRunner(deployCmd, { timeout: 300000 }); if (!deploy.success) { return { content: [{ type: "text", text: `Failed to deploy!\n\nError: ${deploy.stderr || deploy.error}` }] }; } const appUrl = await commandRunner(`az containerapp show -n ${app_name} -g ${resource_group} --query properties.configuration.ingress.fqdn -o tsv`); output += `\nDeployment successful!\n\nApp: ${app_name}\nURL: https://${appUrl.stdout}`; return { content: [{ type: "text", text: output }] }; }
• src/tools.js:576-597 (registration)

  Exported tools object including azureContainerAppsDeploy for testing/import in other contexts.
  export const tools = { // Git gitStatusExplained, gitBranchExplained, gitCommitGuided, // Docker dockerCheckSetup, dockerAnalyzeProject, dockerBuild, // GitHub githubSecretsList, githubSecretsSet, // Azure azureCheckCli, azureAcrSetup, azureContainerAppsDeploy, // SonarCloud sonarcloudSetupGuide, sonarcloudCreateConfig, // Onboarding devOnboardingCheck, };