Terraform MCP As Code

Terraform Infrastructure as Code

Automate HashiCorp Cloud Platform (HCP) Terraform infrastructure management through type-safe TypeScript wrappers for Terraform Cloud and Terraform Enterprise.

When to Use This Skill

Invoke this skill when you need to:

• Create, configure, or update Terraform Cloud/Enterprise workspaces
• Trigger and monitor Terraform runs programmatically
• Manage workspace variables and variable sets
• Search for public Terraform modules, providers, or policies
• Access private registry modules and providers
• List organizations and projects in your Terraform Cloud/Enterprise account

This skill is ideal for infrastructure-as-code automation and programmatic HCP Terraform management workflows.

Prerequisites

Required:

• Terraform Cloud/Enterprise account
• TFE_TOKEN environment variable with a valid Terraform API token
• Docker (for running the MCP server)

MCP Server Command:

docker run -i --rm -e TFE_TOKEN=your_token hashicorp/terraform-mcp-server

Security Best Practices

⚠️ Important Security Guidelines:

• Never hardcode credentials: Always use environment variables for TFE_TOKEN
• Token security: Store tokens in secure credential managers or environment configuration
• Least privilege: Use workspace-specific or organization-specific tokens when possible
• Review before execution: Examine all generated code before running in production environments
• No secrets in code: Never commit tokens to version control

Example of secure token handling:

// ✅ Correct: Use environment variables
const token = process.env.TFE_TOKEN;

// ❌ Wrong: Hardcoded token
const token = "abc123..."; // NEVER DO THIS

Available Tools

This skill provides 34 type-safe tools organized into 6 categories:

• Workspaces (7 tools) - scripts/workspaces/

  • Create, configure, update workspaces
  • Manage workspace tags
  • Create No Code module workspaces

• Runs (3 tools) - scripts/runs/

  • Create and trigger runs
  • Get run details and status
  • List runs with filtering

• Variables (9 tools) - scripts/variables/

  • Create/update/delete workspace variables
  • Manage variable sets
  • Attach/detach variable sets to workspaces

• Public Registry (9 tools) - scripts/public-registry/

  • Search modules, providers, and policies
  • Get module/provider details and documentation
  • Get provider capabilities

• Private Registry (4 tools) - scripts/private-registry/

  • Search private modules and providers
  • Get private module/provider details

• Organization (2 tools) - scripts/organization/

  • List Terraform organizations
  • List projects in an organization

For detailed parameters and types, see the TypeScript files in each category directory. All functions include full type definitions and JSDoc comments for IDE autocomplete.

Quick Start

import { initializeMCPClient, closeMCPClient } from "./scripts/client.js";
import { CreateWorkspace } from "./scripts/workspaces/index.js";
import { CreateRun } from "./scripts/runs/index.js";

// 1. Initialize connection
await initializeMCPClient({
  command: "docker",
  args: [
    "run", "-i", "--rm",
    "-e", `TFE_TOKEN=${process.env.TFE_TOKEN}`,
    "hashicorp/terraform-mcp-server"
  ]
});

try {
  // 2. Create a workspace
  const workspace = await CreateWorkspace({
    workspace_name: "my-infrastructure",
    terraform_org_name: "my-org",
    auto_apply: "false"
  });

  // 3. Trigger a run
  const run = await CreateRun({
    workspace_name: "my-infrastructure",
    terraform_org_name: "my-org",
    message: "Initial deployment"
  });
} finally {
  // 4. Clean up
  await closeMCPClient();
}

Common Workflows

Workflow 1: Create Infrastructure Workspace

// Use case: Setting up a new production environment for an API service
import { CreateWorkspace } from "./scripts/workspaces/index.js";

const workspace = await CreateWorkspace({
  workspace_name: "production-api",
  terraform_org_name: "acme-corp",
  description: "Production API infrastructure",
  auto_apply: "false",           // Require manual approval for production
  execution_mode: "remote",
  terraform_version: "1.6.0",
  tags: "production,api,critical"
});

Workflow 2: Find and Use Registry Module

// Use case: Discovering the right VPC module for AWS infrastructure
import { SearchModules, GetModuleDetails } from "./scripts/public-registry/index.js";

// 1. Search for VPC modules
const modules = await SearchModules({
  module_query: "vpc aws terraform-aws-modules"
});

// 2. Get detailed documentation for the best match
const moduleDetails = await GetModuleDetails({
  module_id: "terraform-aws-modules/vpc/aws/5.1.2"
});

console.log(moduleDetails.content[0].text);

Workflow 3: Configure Workspace Variables

// Use case: Setting up environment-specific configuration
import { CreateVariableSet, CreateVariableInVariableSet, AttachVariableSetToWorkspaces } from "./scripts/variables/index.js";

// 1. Create a variable set for AWS credentials
const varSet = await CreateVariableSet({
  terraform_org_name: "acme-corp",
  name: "aws-production-credentials",
  description: "AWS credentials for production workspaces",
  global: false
});

// 2. Add variables to the set
await CreateVariableInVariableSet({
  variable_set_id: varSet.id,
  key: "AWS_REGION",
  value: "us-east-1",
  category: "env",
  sensitive: false
});

// 3. Attach to workspaces
await AttachVariableSetToWorkspaces({
  variable_set_id: varSet.id,
  workspace_ids: "ws-123,ws-456,ws-789"
});

Workflow 4: Trigger and Monitor Runs

// Use case: Deploying infrastructure changes with monitoring
import { CreateRun, GetRunDetails } from "./scripts/runs/index.js";

// 1. Trigger a run
const run = await CreateRun({
  workspace_name: "production-api",
  terraform_org_name: "acme-corp",
  message: "Deploy v2.1.0 API changes",
  run_type: "plan-and-apply"
});

// 2. Monitor run status
const runDetails = await GetRunDetails({
  run_id: run.id
});

console.log(`Run status: ${runDetails.status}`);
console.log(`Plan output: ${runDetails.content[0].text}`);

Using the TypeScript Wrappers

Import from category indexes or individual files:

// Import from category index
import { CreateWorkspace, UpdateWorkspace, ListWorkspaces } from "./scripts/workspaces/index.js";

// Or import specific tool with types
import { CreateWorkspace, CreateWorkspaceInput, CreateWorkspaceOutput } from "./scripts/workspaces/createWorkspace.js";

All wrapper functions are fully typed with Input/Output interfaces. Use your IDE's autocomplete to discover parameters and see JSDoc documentation.

Error Handling

try {
  const result = await CreateWorkspace({
    workspace_name: "my-workspace",
    terraform_org_name: "my-org"
  });

  if (result.isError) {
    console.error("Workspace creation failed:", result.content);
  } else {
    console.log("Workspace created successfully");
  }
} catch (error) {
  console.error("MCP call failed:", error);
}

Testing This Skill

Before Using:

1. Verify TFE_TOKEN is set: echo $TFE_TOKEN
2. Confirm Docker is running: docker --version
3. Test MCP server connectivity:

   docker run -i --rm -e TFE_TOKEN=$TFE_TOKEN hashicorp/terraform-mcp-server
   

Troubleshooting:

• Connection errors: Verify Docker is running and token is valid
• Authentication failures: Check TFE_TOKEN has correct permissions for the operation
• Type errors: Ensure you're using the correct Input interface for each function

Architecture

• scripts/client.ts - MCP connection manager (initializeMCPClient, callMCPTool, closeMCPClient)
• scripts/{category}/ - Type-safe wrapper functions organized by category
  • Each tool has its own .ts file with Input/Output interfaces
  • index.ts provides barrel exports for convenient importing
• Full type safety - All interfaces generated from JSON Schema definitions

Limitations

This skill is NOT suitable for:

• Direct Terraform CLI operations (use Terraform CLI directly instead)
• Local Terraform state management (this is for Cloud/Enterprise only)
• Terraform configuration generation (use Terraform language skills instead)
• Non-Terraform infrastructure management

This skill was auto-generated by mcp-to-claude-skill