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Google Cloud MCP Server

by krzko

List Available Deployment Services

gcp-iam-list-deployment-services

List Google Cloud Platform services that have predefined deployment permission sets to manage access control for deployment tasks.

Instructions

List all GCP services with pre-defined deployment permission sets

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Implementation Reference

  • Inline handler function that lists all GCP deployment services with their permission sets. It formats a detailed markdown response including service keys, descriptions, permission counts, and usage examples. Uses getAllDeploymentPermissionSets() helper.
      async () => {
        try {
          const permissionSets = getAllDeploymentPermissionSets();
    
          let result = `# Available Deployment Services\n\n`;
          result += `The following GCP services have pre-defined permission sets for deployment validation:\n\n`;
    
          permissionSets.forEach((set) => {
            // Get the service key from the original keys
            const serviceKey =
              Object.keys(DEPLOYMENT_PERMISSION_SETS).find(
                (key) => DEPLOYMENT_PERMISSION_SETS[key] === set,
              ) || set.service.toLowerCase().replace(/\s+/g, "-");
    
            result += `## ${set.service}\n\n`;
            result += `**Service Key:** \`${serviceKey}\`\n`;
            result += `**Description:** ${set.description}\n`;
            result += `**Required Permissions:** ${set.requiredPermissions.length}\n`;
            result += `**Optional Permissions:** ${set.optionalPermissions?.length || 0}\n\n`;
          });
    
          result += `## Usage\n\n`;
          result += `Use the \`validate-deployment-permissions\` tool with the service key to check your permissions for deploying to any of these services.\n\n`;
          result += `**Example:** \`validate-deployment-permissions\` with service="cloud-run"\n`;
    
          return {
            content: [
              {
                type: "text",
                text: result,
              },
            ],
          };
        } catch (error: unknown) {
          const errorMessage =
            error instanceof Error ? error.message : "Unknown error";
          logger.error(`Error listing deployment services: ${errorMessage}`);
    
          return {
            content: [
              {
                type: "text",
                text: `# Error Listing Deployment Services\n\nFailed to list deployment services: ${errorMessage}`,
              },
            ],
            isError: true,
          };
        }
      },
    );
  • Registration of the 'gcp-iam-list-deployment-services' tool via server.registerTool call within registerIamTools function. Includes title, description, empty input schema, and inline handler.
      "gcp-iam-list-deployment-services",
      {
        title: "List Available Deployment Services",
        description:
          "List all GCP services with pre-defined deployment permission sets",
        inputSchema: {},
      },
      async () => {
        try {
          const permissionSets = getAllDeploymentPermissionSets();
    
          let result = `# Available Deployment Services\n\n`;
          result += `The following GCP services have pre-defined permission sets for deployment validation:\n\n`;
    
          permissionSets.forEach((set) => {
            // Get the service key from the original keys
            const serviceKey =
              Object.keys(DEPLOYMENT_PERMISSION_SETS).find(
                (key) => DEPLOYMENT_PERMISSION_SETS[key] === set,
              ) || set.service.toLowerCase().replace(/\s+/g, "-");
    
            result += `## ${set.service}\n\n`;
            result += `**Service Key:** \`${serviceKey}\`\n`;
            result += `**Description:** ${set.description}\n`;
            result += `**Required Permissions:** ${set.requiredPermissions.length}\n`;
            result += `**Optional Permissions:** ${set.optionalPermissions?.length || 0}\n\n`;
          });
    
          result += `## Usage\n\n`;
          result += `Use the \`validate-deployment-permissions\` tool with the service key to check your permissions for deploying to any of these services.\n\n`;
          result += `**Example:** \`validate-deployment-permissions\` with service="cloud-run"\n`;
    
          return {
            content: [
              {
                type: "text",
                text: result,
              },
            ],
          };
        } catch (error: unknown) {
          const errorMessage =
            error instanceof Error ? error.message : "Unknown error";
          logger.error(`Error listing deployment services: ${errorMessage}`);
    
          return {
            content: [
              {
                type: "text",
                text: `# Error Listing Deployment Services\n\nFailed to list deployment services: ${errorMessage}`,
              },
            ],
            isError: true,
          };
        }
      },
    );
  • Helper function called by the tool handler to retrieve all DeploymentPermissionSet objects from the DEPLOYMENT_PERMISSION_SETS constant.
    export function getAllDeploymentPermissionSets(): DeploymentPermissionSet[] {
      return Object.values(DEPLOYMENT_PERMISSION_SETS);
    }
  • Constant data structure defining permission sets for multiple GCP services (Cloud Run, GKE, Compute Engine, etc.). Each entry includes service details, required/optional permissions, and common resources. Used by getAllDeploymentPermissionSets().
    export const DEPLOYMENT_PERMISSION_SETS: Record<
      string,
      DeploymentPermissionSet
    > = {
      "cloud-run": {
        service: "Cloud Run",
        description: "Deploy and manage Cloud Run services",
        requiredPermissions: [
          "run.services.create",
          "run.services.update",
          "run.services.get",
          "run.services.list",
          "run.services.delete",
          "run.revisions.get",
          "run.revisions.list",
          "iam.serviceAccounts.actAs",
        ],
        optionalPermissions: [
          "run.services.setIamPolicy",
          "run.services.getIamPolicy",
          "cloudsql.instances.connect",
          "secretmanager.versions.access",
        ],
        commonResources: [
          "projects/{project}/locations/{location}/services/{service}",
        ],
      },
      gke: {
        service: "Google Kubernetes Engine",
        description: "Deploy and manage GKE clusters and workloads",
        requiredPermissions: [
          "container.clusters.create",
          "container.clusters.update",
          "container.clusters.get",
          "container.clusters.list",
          "container.clusters.delete",
          "container.operations.get",
          "container.operations.list",
          "compute.instances.get",
          "compute.instances.list",
          "iam.serviceAccounts.actAs",
        ],
        optionalPermissions: [
          "container.clusters.getCredentials",
          "compute.networks.get",
          "compute.subnetworks.get",
          "logging.logEntries.create",
          "monitoring.metricDescriptors.create",
        ],
        commonResources: [
          "projects/{project}/locations/{location}/clusters/{cluster}",
        ],
      },
      "compute-engine": {
        service: "Compute Engine",
        description: "Deploy and manage Compute Engine instances",
        requiredPermissions: [
          "compute.instances.create",
          "compute.instances.delete",
          "compute.instances.get",
          "compute.instances.list",
          "compute.instances.start",
          "compute.instances.stop",
          "compute.disks.create",
          "compute.disks.use",
          "compute.networks.use",
          "compute.subnetworks.use",
          "iam.serviceAccounts.actAs",
        ],
        optionalPermissions: [
          "compute.instances.setMetadata",
          "compute.instances.setTags",
          "compute.firewalls.create",
          "compute.addresses.create",
        ],
        commonResources: ["projects/{project}/zones/{zone}/instances/{instance}"],
      },
      "cloud-functions": {
        service: "Cloud Functions",
        description: "Deploy and manage Cloud Functions",
        requiredPermissions: [
          "cloudfunctions.functions.create",
          "cloudfunctions.functions.update",
          "cloudfunctions.functions.get",
          "cloudfunctions.functions.list",
          "cloudfunctions.functions.delete",
          "cloudfunctions.operations.get",
          "iam.serviceAccounts.actAs",
        ],
        optionalPermissions: [
          "cloudfunctions.functions.setIamPolicy",
          "cloudfunctions.functions.getIamPolicy",
          "storage.buckets.get",
          "storage.objects.create",
        ],
        commonResources: [
          "projects/{project}/locations/{location}/functions/{function}",
        ],
      },
      "app-engine": {
        service: "App Engine",
        description: "Deploy and manage App Engine applications",
        requiredPermissions: [
          "appengine.applications.create",
          "appengine.applications.update",
          "appengine.applications.get",
          "appengine.versions.create",
          "appengine.versions.update",
          "appengine.versions.get",
          "appengine.versions.list",
          "appengine.services.get",
          "appengine.services.list",
        ],
        optionalPermissions: [
          "appengine.versions.delete",
          "appengine.instances.get",
          "appengine.instances.list",
          "storage.buckets.get",
          "storage.objects.create",
        ],
        commonResources: [
          "projects/{project}/services/{service}/versions/{version}",
        ],
      },
      "cloud-storage": {
        service: "Cloud Storage",
        description: "Manage Cloud Storage buckets and objects",
        requiredPermissions: [
          "storage.buckets.create",
          "storage.buckets.get",
          "storage.buckets.list",
          "storage.objects.create",
          "storage.objects.get",
          "storage.objects.list",
        ],
        optionalPermissions: [
          "storage.buckets.delete",
          "storage.objects.delete",
          "storage.buckets.setIamPolicy",
          "storage.buckets.getIamPolicy",
        ],
        commonResources: ["projects/{project}/buckets/{bucket}"],
      },
      "cloud-sql": {
        service: "Cloud SQL",
        description: "Deploy and manage Cloud SQL instances",
        requiredPermissions: [
          "cloudsql.instances.create",
          "cloudsql.instances.update",
          "cloudsql.instances.get",
          "cloudsql.instances.list",
          "cloudsql.instances.connect",
          "cloudsql.databases.create",
          "cloudsql.databases.get",
          "cloudsql.databases.list",
        ],
        optionalPermissions: [
          "cloudsql.instances.delete",
          "cloudsql.users.create",
          "cloudsql.users.list",
          "cloudsql.backupRuns.create",
        ],
        commonResources: ["projects/{project}/instances/{instance}"],
      },
    };
  • src/index.ts:202-202 (registration)
    Invocation of registerIamTools(server) in the main server startup, which triggers registration of IAM tools including 'gcp-iam-list-deployment-services'.
    registerIamTools(server);
Behavior2/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations are provided, so the description carries full burden. It states it's a list operation, implying read-only behavior, but doesn't disclose critical details like authentication requirements, rate limits, pagination, return format, or what 'pre-defined deployment permission sets' entail. This is inadequate for a tool with no annotation coverage.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single, efficient sentence that front-loads the core purpose ('List all GCP services') and adds qualifying detail ('with pre-defined deployment permission sets'). There is zero waste or redundancy.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given no annotations, no output schema, and the tool's complexity (listing services with specific permission sets), the description is incomplete. It lacks behavioral context (e.g., auth, rate limits), output details, and usage guidance, making it insufficient for effective agent use.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters4/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

The tool has 0 parameters with 100% schema description coverage, so no parameter documentation is needed. The description doesn't add param info, which is appropriate, earning a baseline score of 4 for this dimension.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the action ('List all') and resource ('GCP services'), with the specific scope of 'with pre-defined deployment permission sets'. It distinguishes from generic service listing tools by specifying deployment permission sets, though it doesn't explicitly differentiate from siblings like 'gcp-iam-validate-deployment-permissions'.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

No guidance is provided on when to use this tool versus alternatives. It doesn't mention prerequisites, context for deployment planning, or how it relates to siblings like 'gcp-iam-validate-deployment-permissions' or 'gcp-iam-analyse-permission-gaps'.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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