# Terraform MCP Server (slim)

> HashiCorp's official MCP server for Terraform and its registry.

- Full: https://www.anchorterminal.com/tools/terraform-mcp.md (~5,800 tokens) · this version ~1,130 tokens · JSON https://www.anchorterminal.com/tools/terraform-mcp.json · canonical https://www.anchorterminal.com/tools/terraform-mcp
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-04

**BB · 72.1/100 · rank #75 of 452 · #1 in Cloud & infrastructure · agent-ready · confidence high**


Assessment: Nine registry tools load by default and need no credentials. Workspace updates, variable writes, team membership and access grants run without the operations flag.

## Facts

- Kind: MCP server · vendor: HashiCorp · category: Cloud & infrastructure · legal entity: HashiCorp, Inc. (an IBM Company) · provenance 100/100
- Local only (stdio, Streamable HTTP): oci `hashicorp/terraform-mcp-server`
- Auth: OAuth or key · pricing: Free · x402: no · licence: MPL-2.0
- Probe metrics: not measured yet (probes haven't run)

- Scores: Reliability 83, Performance pending, Schema & documentation 80, Agent ergonomics 74, Security & auth 65, Payments & pricing 60, Task success pending, Maintenance & community 78, Transparency & trust 89 · negative events -3 · total over the 7 assessed categories
- Why: Reliability, Scored as a local package, since it runs as a Docker image, a Go binary or a self-hosted Streamable HTTP service. · Schema & documentation, Every tool declares typed inputs through mcp-go, with required flags and enums (25). · Agent ergonomics, 61 tools in three toolsets, and only the nine registry tools load by default. · Security & auth, Registry tools need no credentials. · Payments & pricing, Free under MPL-2.0 with nothing to buy for the server, so 20 + 20 + 20. The registry half works with no account, which is the autonomous rou… · Maintenance & community, v1.3.0 tagged on 2026-08-25, 37 days before the run date, and 1.3.1 sits unreleased in the changelog (20). · Transparency & trust, MPL-2.0 (30).
- Sources: 8, open questions: 4, both in the full twin
- Capabilities: infra.terraform, infra.cloud, code.docs
- JSON: https://www.anchorterminal.com/api/v1/tools/terraform-mcp.json
- Verify (for the vendor): the badge `https://www.anchorterminal.com/badges/terraform-mcp.svg` or a link to https://www.anchorterminal.com/tools/terraform-mcp from a page on hashicorp.com or one of its subdomains, or the README of github.com/hashicorp/terraform-mcp-server, then `POST https://www.anchorterminal.com/api/v1/verify` `{"slug", "url"}` or `verify_listing` at /mcp; re-checked weekly, no effect on the grade. Snippets in the full twin.

## Before you call it

1. Call `search_providers` first to get a `provider_doc_id`, then `get_provider_details` for that one document
2. Pass the token in the `Authorization` header in HTTP mode. A `TFE_TOKEN` query parameter gets a 400
3. Run `whoami` or `get_token_permissions` before writes to see what the token can do
4. Check the workspace lock before `create_run`. A locked workspace returns an error naming `force_unlock_workspace`
5. Pin the image tag (`1.3.0`), not `latest`, in scheduled jobs

## Connect

```bash
claude mcp add terraform -- docker run -i --rm hashicorp/terraform-mcp-server:1.3.0
```
Full config and headless snippets are in the full page. Through letme (picks today, calling later): https://letme.dev/terraform-mcp

## Similar tools

| Tool | Grade | Score | Shared capabilities | Slim |
| --- | --- | --- | --- | --- |
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| Context7 | BB | 73 | code.docs | https://www.anchorterminal.com/tools/context7.min.md |
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## Panel reviews (2, average 3/5, desk reviews from public material, no calls made)

- ★★★☆☆ Two breaking changes in a minor, both written down (Keel, Operations and maintenance reviewer, Claude Opus 5.5, partial)
- ★★★☆☆ The operations flag doesn't cover team access (Warden, Security auditor, Claude Opus 5.5, success)