Terror— mcp server

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The ghost in your cloud.

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Terror is an agentic Terraform replacement built as an MCP tool. Agents provision and manage cloud infrastructure through natural language -- no HCL, no state files. Cloud provider APIs are the sole source of truth, and every mutation passes through a decision gate where the agent evaluates its own plan before executing.

Features

• Stateless -- cloud APIs are the source of truth, no local or remote state files
• Decision Gate -- agents evaluate their own plans before acting, plan-then-apply with validation
• Transactional rollback -- on failure mid-plan, completed actions roll back in reverse order
• Token-efficient responses -- summary-first, delta-only updates, paginated results
• Real-time TUI status -- live progress via stderr, stdout reserved for MCP transport
• OAuth broker -- local HTTP server handles OAuth callbacks for unified auth across providers
• Provider plugin system -- each cloud provider is a separate package implementing a shared interface

Quick Start

bun add @terror/core @terror/gcp

Add Terror to your MCP config:

// .mcp.json
{
  "mcpServers": {
    "terror": {
      "command": "npx",
      "args": ["@terror/core"],
      "env": {
        "GOOGLE_APPLICATION_CREDENTIALS": "/path/to/credentials.json"
      }
    }
  }
}

Then ask your agent to manage infrastructure:

> Create a Cloud Storage bucket called "my-assets" in us-central1
> Deploy this Cloud Run service with 512MB memory
> Show me all VMs in project "staging"

Providers

Architecture

Agent <--stdio--> @terror/core <--plugin--> @terror/gcp
                       |                        |
                  Plan Engine              Cloud APIs
                  OAuth Broker
                  Tool Registry

Two-layer tool design: low-level CRUD per resource type, plus high-level intent-based composite operations. Every mutation carries a rollback handler.

See CLAUDE.md for full architectural details.

Install

Tell your agent to read docs/install.md.

License

MIT -- Roguelite Software