Termalin

Termalin is a cross-platform SSH client with a built-in MCP server.

CommunityOnlineNo sign-inGlobalFreeCan modify data

What it can do

  • Hosts List: List the servers reachable through Termalin (your tunnel agents). Returns id, name, whether the server is online, and the default login user. Use the id with ssh_exec.
  • Generate Password: Generate a strong random password — handy when creating a user or setting a password on a server. Returns the password only; nothing is stored.
  • Ssh Exec: Run a single shell command on one of your servers and return its combined output. Runs keyless over Termalin's tunnel — no SSH key, and the server needs no open inbound port.

What data it sees

Do you need an account

No: the server works without sign-in

Termalin is a cross-platform SSH client with a built-in MCP server. Your agent opens SSH sessions, runs commands and transfers files on your servers — authenticated through a key custodian, so private keys never touch disk, with per-host and per-command policy and a live watch grid. This hosted endpoint reaches servers enrolled with the Termalin tunnel agent via short-lived certificates. Create an API key in the web cabinet (account → API keys) and pass it as a Bearer token. Free desktop app · Windows/macOS/Linux · https://termal.in

How to connect

How to connect Termalin to Claude

The server address to paste into Claude settings:

https://termalin--wolfhoundtester.run.tools

  1. Open Claude (claude.ai or the desktop app).
  2. Go to Settings → Connectors.
  3. Click Add custom connector.
  4. Paste the server address copied below into Remote MCP server URL and click Add.
  5. In a chat, click + → Connectors and switch the new connector on.

Custom connectors are available on Free, Pro, Max, Team and Enterprise plans (Free is limited to one). On Team and Enterprise an organization Owner adds the connector first under Organization settings → Connectors.

Authorization

After you click Add, a sign-in window for the service opens. Sign in with your own account and approve access. Claude never sees your password.

How to connect Termalin to ChatGPT

The server address to paste into ChatGPT settings:

https://termalin--wolfhoundtester.run.tools

  1. Open ChatGPT in a browser (chatgpt.com). A Plus, Pro, Business, Enterprise or Edu plan is required.
  2. Turn on developer mode once: Settings → Apps → Advanced settings → Developer mode.
  3. Open Settings → Connectors and click Create.
  4. Fill in the form: Name (anything), Description (one line about what the service does), MCP server URL (copy it below).
  5. Under Authentication choose OAuth if the service requires sign-in, otherwise None. Click Create.
  6. In a new chat open + → Apps/Connectors and enable the connector.

OpenAI has renamed this section before (Connectors → Apps/Plugins). If the label differs, search settings for "developer mode". On Business/Enterprise workspaces an admin must allow custom connectors first.

Authorization

On first use ChatGPT opens the service's sign-in window. Sign in and approve access.

How to connect Termalin to Cursor

The server address to paste into Cursor settings:

https://termalin--wolfhoundtester.run.tools

Fastest: click Open in Cursor below and confirm the prompt.

Manually:

  1. In Cursor open Settings → Cursor Settings → MCP and click Add new global MCP server.
  2. Paste the JSON copied below into ~/.cursor/mcp.json (per project: .cursor/mcp.json in the repo root).
  3. Save the file. The server appears in the MCP list; authorize it there if asked.

Authorization

If the service needs sign-in, an authorize button appears next to the server in the MCP list.

Server tool list (8)

Raw names from tools/list. Only developers need these.

hosts_listList the servers reachable through Termalin (your tunnel agents). Returns id, name, whether the server is online, and the default login user. Use the id with ssh_exec.
generate_passwordGenerate a strong random password — handy when creating a user or setting a password on a server. Returns the password only; nothing is stored.
ssh_execRun a single shell command on one of your servers and return its combined output. Runs keyless over Termalin's tunnel — no SSH key, and the server needs no open inbound port.
sftp_listList a directory on one of your servers over SFTP. Returns each entry's name, whether it's a directory, size and modified time. Runs keyless over Termalin's tunnel, like ssh_exec.
sftp_readRead a text file from one of your servers over SFTP and return its contents. Files over 512 KB or non-text (binary) files are refused — use ssh_exec (e.g. sed/tail) for those.
sftp_writeCreate or overwrite a text file on one of your servers over SFTP. 'content' is written as UTF-8. Capped at 512 KB; for binary uploads use a terminal/scp instead.
data_queryRun a database query on one of your servers — passwordless. It executes the engine's own client on the host over Termalin's keyless tunnel, using the database's local trust (Postgres peer auth via `sudo -u postgres`, MySQL/MariaDB unix-socket via `sudo mysql`, redis-cli, mongosh, sqlite3) — so no database password is needed or stored anywhere. Read-only by default: only SELECT/SHOW-style statements run unless allowWrites is set (full-access keys only). SQL engines return CSV/TSV with a header. For MongoDB pass a shell expression, e.g. db.products.find({}).limit(20).toArray().
data_tablesList the tables / collections / keys of a database on one of your servers — passwordless, over the same local-client path as data_query.