hackerdogs/terraform-mcp repository overview

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⁠Terraform MCP Server

MCP server wrapper for Terraform⁠ — access Terraform provider documentation, resource schemas, and module registry data.

⁠What is Terraform?

Terraform by HashiCorp is the industry-standard infrastructure-as-code tool for provisioning and managing cloud and on-premises resources across 3,000+ providers. This MCP server exposes the Terraform provider registry and documentation — letting AI assistants look up resource schemas, find module examples, explore provider argument references, and assist in writing and debugging .tf configuration files. See hashicorp/terraform-mcp-server⁠ for full documentation.

No API keys required — the server queries the public Terraform Registry and runs locally inside the Docker container.

Summary. MCP server wrapper for Terraform⁠ — access Terraform provider documentation, resource schemas, and module registry data.

⁠Tools Reference

⁠Example Prompts

Here are example prompts you can use with Claude (or any MCP client) when this tool is connected:

• "Show me the Terraform resource schema for aws_vpc including all required and optional arguments."
• "Help me write a Terraform module to create an S3 bucket with versioning and server-side encryption."
• "Look up the azurerm_kubernetes_cluster resource documentation and explain the required arguments."
• "Find Terraform modules on the registry for setting up a VPC with private subnets on AWS."
• "What are the required provider configurations for the Google Cloud Terraform provider?"
• "Debug this Terraform config — it's failing on the aws_iam_role resource with a trust policy error."

⁠Deploy

⁠Docker Compose (recommended)

docker-compose up -d

⁠Docker Run (stdio mode)

docker run -i --rm hackerdogs/terraform-mcp:latest

⁠Docker Run (HTTP streamable mode)

docker run -d -p 8670:8670 \
  -e MCP_TRANSPORT=streamable-http \
  -e MCP_PORT=8670 \
  hackerdogs/terraform-mcp:latest

⁠MCP Client Configuration

⁠Stdio mode (default)

Add to your Claude Desktop or Cursor MCP config:

{
  "mcpServers": {
    "terraform-mcp": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "-e",
        "MCP_TRANSPORT",
        "hackerdogs/terraform-mcp:latest"
      ],
      "env": {
        "MCP_TRANSPORT": "stdio"
      }
    }
  }
}

⁠HTTP mode (streamable-http)

First, start the server using Docker Compose or docker run with HTTP mode (see Deploy⁠ above), then point your MCP client at the running server:

{
  "mcpServers": {
    "terraform-mcp": {
      "url": "http://localhost:8670/mcp"
    }
  }
}

⁠Environment Variables

⁠Installing in Hackerdogs

The fastest way to get started is through Hackerdogs⁠:

1. Log in to your Hackerdogs account.
2. Go to the Tools Catalog.
3. Search for the tool by name.
4. Expand the tool card and click Install — you're ready to go.

1. Vendor API key required? Add your key in the config environment variable field before clicking Install. Your key will be encrypted at rest.
2. Enable / Disable the tool anytime from the Enabled Tools page.
3. Need to update a key or parameter? Go to My Tools → toggle Show Decrypted Values → edit → Save.

⁠Build

docker build -t hackerdogs/terraform-mcp:latest .

⁠Testing

⁠Automated tests

./test.sh

⁠Test directly with Docker

1. Start the server in HTTP mode:

docker run -d --rm --name terraform-mcp-test -p 8670:8670 \
  -e MCP_TRANSPORT=streamable-http \
  hackerdogs/terraform-mcp:latest

2. Initialize the MCP session:

SESSION_ID=$(curl -s -D - -X POST http://localhost:8670/mcp \
  -H "Content-Type: application/json" \
  -H "Accept: application/json, text/event-stream" \
  -d '{"jsonrpc":"2.0","id":1,"method":"initialize","params":{"protocolVersion":"2024-11-05","capabilities":{},"clientInfo":{"name":"test","version":"0.1"}}}' \
  2>&1 | grep -i mcp-session-id | awk '{print $2}' | tr -d '\r\n')

curl -s -X POST http://localhost:8670/mcp \
  -H "Content-Type: application/json" \
  -H "Accept: application/json, text/event-stream" \
  -H "mcp-session-id: $SESSION_ID" \
  -d '{"jsonrpc":"2.0","method":"notifications/initialized"}'

3. List available tools:

curl -s -X POST http://localhost:8670/mcp \
  -H "Content-Type: application/json" \
  -H "Accept: application/json, text/event-stream" \
  -H "mcp-session-id: $SESSION_ID" \
  -d '{"jsonrpc":"2.0","id":2,"method":"tools/list","params":{}}'

4. Clean up:

docker stop terraform-mcp-test