MCP servers for ChatGPT (Codex) · Cloud & infrastructure
Best cloud & infrastructure MCP server for ChatGPT (Codex), tested
In ToolPassed's hands-on tests in ChatGPT (Codex), OpenTofu MCP is our provisional candidate for cloud & infrastructure: it passed install, connect, tools and an agent task on 2026-10-19. We ran 3 cloud & infrastructure MCP servers in ChatGPT (Codex); 3 passed every step.
Last tested · runs from 2026-10-15 to 2026-10-20 · one run per server · How we test
Results in ChatGPT (Codex)
| Server | ChatGPT (Codex) |
|---|---|
| OpenTofu MCP Cloud & infrastructure | Passed 2026-10-19 · install, connect, tools, agent task |
| Terraform MCP Cloud & infrastructure | Passed 2026-10-15 · install, connect, tools, agent task |
| Terraform Registry MCP (thrashr888) Cloud & infrastructure | Passed 2026-10-20 · install, connect, tools, agent task |
Dated results
- OpenTofu MCP passed in ChatGPT (Codex) on 2026-10-19 (Codex CLI 0.162.0-alpha.17.2, mcp-remote 0.15.1, connect time not recorded). Full result
- Terraform MCP passed in ChatGPT (Codex) on 2026-10-15 (Codex CLI 0.162.0-alpha.17.2, package version not recorded, connect time not recorded). Full result
- Terraform Registry MCP (thrashr888) passed in ChatGPT (Codex) on 2026-10-20 (Codex CLI 0.162.0-alpha.17.2, terraform-mcp-server 0.13.0, connect time not recorded). Full result
Why OpenTofu MCP is the candidate
OpenTofu MCP passed every step in ChatGPT (Codex). It is the group’s site-wide candidate (judged 2026-10-20): Returned the latest hashicorp/aws provider version in both Claude Code and Cursor with no key, in 2 calls in total. HashiCorp's Terraform MCP and the archived Terraform Registry MCP also passed both with 2 calls each, so this is a tie on pass and calls; OpenTofu gets the nod for the smaller tool list (7 vs 9 and 10), the same tiebreak used in Browser automation. Terraform MCP also passed in ChatGPT (Codex). Servers that need a cloud account (Cloudflare, AWS, Kubernetes) aren't tested. Confirmed Oct 20, 2026: a second run in Claude Code and Cursor passed again (returned hashicorp/aws 6.69.1).
Provisional: based on one dated run per app (no repeat runs yet), so treat it as a candidate, not a final pick. How we test.
Same servers in all 4 apps
| Server | Claude Code | Cursor | Claude Desktop | ChatGPT (Codex) |
|---|---|---|---|---|
| OpenTofu MCP Cloud & infrastructure | Passed 2026-10-20 · install, connect, tools, agent task | Passed 2026-10-20 · install, connect, tools, agent task | Passed 2026-10-19 · install, connect, tools, agent task | Passed 2026-10-19 · install, connect, tools, agent task |
| Terraform MCP Cloud & infrastructure | Passed 2026-10-13 · install, connect, tools, agent task | Passed 2026-10-13 · install, connect, tools, agent task | Passed 2026-10-19 · install, connect, tools, agent task | Passed 2026-10-15 · install, connect, tools, agent task |
| Terraform Registry MCP (thrashr888) Cloud & infrastructure | Passed 2026-10-15 · install, connect, tools, agent task | Passed 2026-10-15 · install, connect, tools, agent task | Passed 2026-10-19 · install, connect, tools, agent task | Passed 2026-10-20 · install, connect, tools, agent task |
What failed or is partial in ChatGPT (Codex)
None of these servers failed in ChatGPT (Codex).
Install in ChatGPT (Codex)
The exact snippet we tested is on the OpenTofu MCP page (pick the ChatGPT (Codex) tab). Not connecting? ChatGPT (Codex) MCP troubleshooting.
Not tested in ChatGPT (Codex) yet
Cloudflare MCP, Grafana MCP (official), CloudBase AI Toolkit, Oracle MCP servers, Postman MCP Server, Apollo MCP Server, CrowdStrike Falcon MCP, VictoriaMetrics MCP, AWS MCP servers, Docker Hub MCP Server, Hostinger API MCP, Azure MCP Server, gcloud MCP, Cloud Run MCP, Kubernetes MCP, Radar (Kubernetes UI), FutureInfra MCP, SSH MCP Server, Prometheus MCP Server. Listed from their source; no result in ChatGPT (Codex) yet.
Questions
What is the best cloud & infrastructure MCP server for ChatGPT (Codex)?
In ToolPassed's hands-on tests in ChatGPT (Codex), OpenTofu MCP is our provisional candidate for cloud & infrastructure: it passed install, connect, tools and an agent task on 2026-10-19. We ran 3 cloud & infrastructure MCP servers in ChatGPT (Codex); 3 passed every step.
Does OpenTofu MCP work with ChatGPT (Codex)?
OpenTofu MCP passed in ChatGPT (Codex) on 2026-10-19 (Codex CLI 0.162.0-alpha.17.2, mcp-remote 0.15.1, connect time not recorded).
More: all MCP servers tested in ChatGPT (Codex) · Cloud & infrastructure in every app · How we test
