---
title: Tunnels
url: https://platform.claude.com/docs/en/api/cli/beta/tunnels
---

# Tunnels

## Create Tunnel

`$ ant beta:tunnels create`

**POST** `/v1/tunnels`

The Tunnels API is in research preview. It requires the `anthropic-beta: mcp-tunnels-2026-06-22` header and may change without a deprecation period. It supersedes the Admin API endpoints at `/v1/organizations/tunnels`, which remain available during a migration window.

Creates a tunnel. Creation allocates a fresh hostname and provisions the tunnel; it is not idempotent. The new tunnel rejects MCP traffic until at least one CA certificate is added.

### Parameters

- `--display-name: optional string`

  Optional human-readable name for the tunnel (1-255 characters).

  minLength: 1, maxLength: 255

- `--beta: optional array of AnthropicBeta` (header parameter)

  Optional header to specify the beta version(s) you want to use.

- `--workspace-id: optional string` (header parameter)

  Optional header to select the Workspace for this request. The value is a Workspace ID (for example, `wrkspc_011CZkZaBF1tNoB5wlCeusgy`).

  Only needed for credentials that can act on more than one Workspace. A credential that belongs to a specific Workspace may omit it; if sent, it must match that Workspace.

### Returns

- `beta_tunnel: object`

  An MCP tunnel.

  - `type: "tunnel"`

  - `id: string`

    Unique identifier for the tunnel, prefixed with `tnl_`.

  - `archived_at: string`

    RFC 3339 datetime string indicating when the tunnel was archived. Null if it is not archived.

    format: date-time

  - `created_at: string`

    RFC 3339 datetime string indicating when the tunnel was created.

    format: date-time

  - `display_name: string`

    Human-readable name for the tunnel (1-255 characters). Null if unset.

  - `domain: string`

    Anthropic-assigned hostname for the tunnel. MCP server URLs whose host is a subdomain of this value are routed through the tunnel. Globally unique and never reused, even after the tunnel is archived.

### Example

```bash
ant beta:tunnels create \
  --api-key my-anthropic-api-key
```

#### Response (200)

```json
{
  "id": "id",
  "archived_at": "2019-12-27T18:11:19.117Z",
  "created_at": "2019-12-27T18:11:19.117Z",
  "display_name": "display_name",
  "domain": "domain",
  "type": "tunnel"
}
```

## Get Tunnel

`$ ant beta:tunnels retrieve`

**GET** `/v1/tunnels/{tunnel_id}`

The Tunnels API is in research preview. It requires the `anthropic-beta: mcp-tunnels-2026-06-22` header and may change without a deprecation period. It supersedes the Admin API endpoints at `/v1/organizations/tunnels`, which remain available during a migration window.

Fetches a tunnel by ID.

### Parameters

- `--tunnel-id: string` (path parameter)

  ID of the tunnel (`tnl_...`).

- `--beta: optional array of AnthropicBeta` (header parameter)

  Optional header to specify the beta version(s) you want to use.

- `--workspace-id: optional string` (header parameter)

  Optional header to select the Workspace for this request. The value is a Workspace ID (for example, `wrkspc_011CZkZaBF1tNoB5wlCeusgy`).

  Only needed for credentials that can act on more than one Workspace. A credential that belongs to a specific Workspace may omit it; if sent, it must match that Workspace.

### Returns

- `beta_tunnel: object`

  An MCP tunnel.

  - `type: "tunnel"`

  - `id: string`

    Unique identifier for the tunnel, prefixed with `tnl_`.

  - `archived_at: string`

    RFC 3339 datetime string indicating when the tunnel was archived. Null if it is not archived.

    format: date-time

  - `created_at: string`

    RFC 3339 datetime string indicating when the tunnel was created.

    format: date-time

  - `display_name: string`

    Human-readable name for the tunnel (1-255 characters). Null if unset.

  - `domain: string`

    Anthropic-assigned hostname for the tunnel. MCP server URLs whose host is a subdomain of this value are routed through the tunnel. Globally unique and never reused, even after the tunnel is archived.

### Example

```bash
ant beta:tunnels retrieve \
  --api-key my-anthropic-api-key \
  --tunnel-id tunnel_id
```

#### Response (200)

```json
{
  "id": "id",
  "archived_at": "2019-12-27T18:11:19.117Z",
  "created_at": "2019-12-27T18:11:19.117Z",
  "display_name": "display_name",
  "domain": "domain",
  "type": "tunnel"
}
```

## List Tunnels

`$ ant beta:tunnels list`

**GET** `/v1/tunnels`

The Tunnels API is in research preview. It requires the `anthropic-beta: mcp-tunnels-2026-06-22` header and may change without a deprecation period. It supersedes the Admin API endpoints at `/v1/organizations/tunnels`, which remain available during a migration window.

Lists tunnels. Results are ordered by creation time, newest first; archived tunnels are excluded unless include_archived is set.

### Parameters

- `--include-archived: optional boolean` (query parameter)

  Whether to include archived tunnels in the results. Defaults to false.

- `--limit: optional number` (query parameter)

  Maximum number of tunnels to return per page. Defaults to 20, maximum 1000.

  format: int32

- `--page: optional string` (query parameter)

  Opaque pagination cursor from a previous `list_tunnels` response.

- `--beta: optional array of AnthropicBeta` (header parameter)

  Optional header to specify the beta version(s) you want to use.

- `--workspace-id: optional string` (header parameter)

  Optional header to select the Workspace for this request. The value is a Workspace ID (for example, `wrkspc_011CZkZaBF1tNoB5wlCeusgy`).

  Only needed for credentials that can act on more than one Workspace. A credential that belongs to a specific Workspace may omit it; if sent, it must match that Workspace.

### Returns

- `BetaListTunnelsResponse: object`

  A paginated list of tunnels.

  - `data: array of BetaTunnel`

    List of tunnels, ordered by created_at descending.

    - `type: "tunnel"`

    - `id: string`

      Unique identifier for the tunnel, prefixed with `tnl_`.

    - `archived_at: string`

      RFC 3339 datetime string indicating when the tunnel was archived. Null if it is not archived.

      format: date-time

    - `created_at: string`

      RFC 3339 datetime string indicating when the tunnel was created.

      format: date-time

    - `display_name: string`

      Human-readable name for the tunnel (1-255 characters). Null if unset.

    - `domain: string`

      Anthropic-assigned hostname for the tunnel. MCP server URLs whose host is a subdomain of this value are routed through the tunnel. Globally unique and never reused, even after the tunnel is archived.

  - `next_page: string`

    Pagination cursor for the next page, or null if no more results.

### Example

```bash
ant beta:tunnels list \
  --api-key my-anthropic-api-key
```

#### Response (200)

```json
{
  "data": [
    {
      "id": "id",
      "archived_at": "2019-12-27T18:11:19.117Z",
      "created_at": "2019-12-27T18:11:19.117Z",
      "display_name": "display_name",
      "domain": "domain",
      "type": "tunnel"
    }
  ],
  "next_page": "next_page"
}
```

## Archive Tunnel

`$ ant beta:tunnels archive`

**POST** `/v1/tunnels/{tunnel_id}/archive`

The Tunnels API is in research preview. It requires the `anthropic-beta: mcp-tunnels-2026-06-22` header and may change without a deprecation period. It supersedes the Admin API endpoints at `/v1/organizations/tunnels`, which remain available during a migration window.

Archives a tunnel. Archival is irreversible: every non-archived certificate on the tunnel is archived in the same operation, the hostname is retired and never re-allocated, and the tunnel token is invalidated. Retrying against an already-archived tunnel returns the existing record unchanged.

### Parameters

- `--tunnel-id: string` (path parameter)

  ID of the tunnel (`tnl_...`).

- `--beta: optional array of AnthropicBeta` (header parameter)

  Optional header to specify the beta version(s) you want to use.

- `--workspace-id: optional string` (header parameter)

  Optional header to select the Workspace for this request. The value is a Workspace ID (for example, `wrkspc_011CZkZaBF1tNoB5wlCeusgy`).

  Only needed for credentials that can act on more than one Workspace. A credential that belongs to a specific Workspace may omit it; if sent, it must match that Workspace.

### Returns

- `beta_tunnel: object`

  An MCP tunnel.

  - `type: "tunnel"`

  - `id: string`

    Unique identifier for the tunnel, prefixed with `tnl_`.

  - `archived_at: string`

    RFC 3339 datetime string indicating when the tunnel was archived. Null if it is not archived.

    format: date-time

  - `created_at: string`

    RFC 3339 datetime string indicating when the tunnel was created.

    format: date-time

  - `display_name: string`

    Human-readable name for the tunnel (1-255 characters). Null if unset.

  - `domain: string`

    Anthropic-assigned hostname for the tunnel. MCP server URLs whose host is a subdomain of this value are routed through the tunnel. Globally unique and never reused, even after the tunnel is archived.

### Example

```bash
ant beta:tunnels archive \
  --api-key my-anthropic-api-key \
  --tunnel-id tunnel_id
```

#### Response (200)

```json
{
  "id": "id",
  "archived_at": "2019-12-27T18:11:19.117Z",
  "created_at": "2019-12-27T18:11:19.117Z",
  "display_name": "display_name",
  "domain": "domain",
  "type": "tunnel"
}
```

## Reveal Tunnel Token

`$ ant beta:tunnels reveal-token`

**POST** `/v1/tunnels/{tunnel_id}/reveal_token`

The Tunnels API is in research preview. It requires the `anthropic-beta: mcp-tunnels-2026-06-22` header and may change without a deprecation period. It supersedes the Admin API endpoints at `/v1/organizations/tunnels`, which remain available during a migration window.

Reveals a tunnel's connector token. The value is fetched live on each call; Anthropic does not store it. Repeated calls return the same value until the token is rotated. Exposed as POST so the token does not appear in intermediary access logs.

### Parameters

- `--tunnel-id: string` (path parameter)

  ID of the tunnel (`tnl_...`).

- `--beta: optional array of AnthropicBeta` (header parameter)

  Optional header to specify the beta version(s) you want to use.

- `--workspace-id: optional string` (header parameter)

  Optional header to select the Workspace for this request. The value is a Workspace ID (for example, `wrkspc_011CZkZaBF1tNoB5wlCeusgy`).

  Only needed for credentials that can act on more than one Workspace. A credential that belongs to a specific Workspace may omit it; if sent, it must match that Workspace.

### Returns

- `beta_tunnel_token: object`

  A tunnel's connector token.

  - `type: "tunnel_token"`

  - `id: string`

    Stable identifier for the current token value. Changes when the token is rotated.

  - `tunnel_token: string`

    The connector token used to run the tunnel. Treat as a credential.

### Example

```bash
ant beta:tunnels reveal-token \
  --api-key my-anthropic-api-key \
  --tunnel-id tunnel_id
```

#### Response (200)

```json
{
  "id": "id",
  "tunnel_token": "tunnel_token",
  "type": "tunnel_token"
}
```

## Rotate Tunnel Token

`$ ant beta:tunnels rotate-token`

**POST** `/v1/tunnels/{tunnel_id}/rotate_token`

The Tunnels API is in research preview. It requires the `anthropic-beta: mcp-tunnels-2026-06-22` header and may change without a deprecation period. It supersedes the Admin API endpoints at `/v1/organizations/tunnels`, which remain available during a migration window.

Rotates a tunnel's connector token. Rotation invalidates the current token for new connections and returns a fresh value; established connections are not severed. A connector restarted after rotation must use the new value.

### Parameters

- `--tunnel-id: string` (path parameter)

  ID of the tunnel (`tnl_...`).

- `--reason: optional string`

  Optional free-text reason for the rotation, recorded for audit.

  maxLength: 1024

- `--beta: optional array of AnthropicBeta` (header parameter)

  Optional header to specify the beta version(s) you want to use.

- `--workspace-id: optional string` (header parameter)

  Optional header to select the Workspace for this request. The value is a Workspace ID (for example, `wrkspc_011CZkZaBF1tNoB5wlCeusgy`).

  Only needed for credentials that can act on more than one Workspace. A credential that belongs to a specific Workspace may omit it; if sent, it must match that Workspace.

### Returns

- `beta_tunnel_token: object`

  A tunnel's connector token.

  - `type: "tunnel_token"`

  - `id: string`

    Stable identifier for the current token value. Changes when the token is rotated.

  - `tunnel_token: string`

    The connector token used to run the tunnel. Treat as a credential.

### Example

```bash
ant beta:tunnels rotate-token \
  --api-key my-anthropic-api-key \
  --tunnel-id tunnel_id
```

#### Response (200)

```json
{
  "id": "id",
  "tunnel_token": "tunnel_token",
  "type": "tunnel_token"
}
```

## Domain types

### Beta Tunnel

- `beta_tunnel: object`

  An MCP tunnel.

  - `type: "tunnel"`

  - `id: string`

    Unique identifier for the tunnel, prefixed with `tnl_`.

  - `archived_at: string`

    RFC 3339 datetime string indicating when the tunnel was archived. Null if it is not archived.

    format: date-time

  - `created_at: string`

    RFC 3339 datetime string indicating when the tunnel was created.

    format: date-time

  - `display_name: string`

    Human-readable name for the tunnel (1-255 characters). Null if unset.

  - `domain: string`

    Anthropic-assigned hostname for the tunnel. MCP server URLs whose host is a subdomain of this value are routed through the tunnel. Globally unique and never reused, even after the tunnel is archived.

### Beta Tunnel Token

- `beta_tunnel_token: object`

  A tunnel's connector token.

  - `type: "tunnel_token"`

  - `id: string`

    Stable identifier for the current token value. Changes when the token is rotated.

  - `tunnel_token: string`

    The connector token used to run the tunnel. Treat as a credential.

## Tunnels › Certificates

### Create Tunnel Certificate

`$ ant beta:tunnels:certificates create`

**POST** `/v1/tunnels/{tunnel_id}/certificates`

The Tunnels API is in research preview. It requires the `anthropic-beta: mcp-tunnels-2026-06-22` header and may change without a deprecation period. It supersedes the Admin API endpoints at `/v1/organizations/tunnels`, which remain available during a migration window.

Registers a public CA certificate on a tunnel. Anthropic verifies the gateway's server certificate against this CA when it terminates the inner TLS session. A tunnel holds at most two non-archived certificates.

#### Parameters

- `--tunnel-id: string` (path parameter)

  ID of the tunnel (`tnl_...`).

- `--ca-certificate-pem: string`

  PEM-encoded X.509 CA certificate. Must contain exactly one certificate and no private-key material. Maximum 8KB.

  maxLength: 8192

- `--beta: optional array of AnthropicBeta` (header parameter)

  Optional header to specify the beta version(s) you want to use.

- `--workspace-id: optional string` (header parameter)

  Optional header to select the Workspace for this request. The value is a Workspace ID (for example, `wrkspc_011CZkZaBF1tNoB5wlCeusgy`).

  Only needed for credentials that can act on more than one Workspace. A credential that belongs to a specific Workspace may omit it; if sent, it must match that Workspace.

#### Returns

- `beta_tunnel_certificate: object`

  A CA certificate attached to a tunnel.

  - `type: "tunnel_certificate"`

  - `id: string`

    Unique identifier for the certificate, prefixed with `tcrt_`.

  - `archived_at: string`

    RFC 3339 datetime string indicating when the certificate was archived. Null if it is still in the trusted set.

    format: date-time

  - `created_at: string`

    RFC 3339 datetime string indicating when the certificate was registered.

    format: date-time

  - `expires_at: string`

    RFC 3339 datetime string indicating when the certificate expires, or `null` if it does not expire.

    format: date-time

  - `fingerprint: string`

    Lowercase hex SHA-256 fingerprint of the certificate's DER encoding.

  - `tunnel_id: string`

    ID of the tunnel the certificate is registered against.

#### Example

```bash
ant beta:tunnels:certificates create \
  --api-key my-anthropic-api-key \
  --tunnel-id tunnel_id \
  --ca-certificate-pem ca_certificate_pem
```

##### Response (200)

```json
{
  "id": "id",
  "archived_at": "2019-12-27T18:11:19.117Z",
  "created_at": "2019-12-27T18:11:19.117Z",
  "expires_at": "2019-12-27T18:11:19.117Z",
  "fingerprint": "fingerprint",
  "tunnel_id": "tunnel_id",
  "type": "tunnel_certificate"
}
```

### Get Tunnel Certificate

`$ ant beta:tunnels:certificates retrieve`

**GET** `/v1/tunnels/{tunnel_id}/certificates/{certificate_id}`

The Tunnels API is in research preview. It requires the `anthropic-beta: mcp-tunnels-2026-06-22` header and may change without a deprecation period. It supersedes the Admin API endpoints at `/v1/organizations/tunnels`, which remain available during a migration window.

Fetches a tunnel certificate by ID.

#### Parameters

- `--tunnel-id: string` (path parameter)

  ID of the tunnel (`tnl_...`).

- `--certificate-id: string` (path parameter)

  ID of the certificate (`tcrt_...`).

- `--beta: optional array of AnthropicBeta` (header parameter)

  Optional header to specify the beta version(s) you want to use.

- `--workspace-id: optional string` (header parameter)

  Optional header to select the Workspace for this request. The value is a Workspace ID (for example, `wrkspc_011CZkZaBF1tNoB5wlCeusgy`).

  Only needed for credentials that can act on more than one Workspace. A credential that belongs to a specific Workspace may omit it; if sent, it must match that Workspace.

#### Returns

- `beta_tunnel_certificate: object`

  A CA certificate attached to a tunnel.

  - `type: "tunnel_certificate"`

  - `id: string`

    Unique identifier for the certificate, prefixed with `tcrt_`.

  - `archived_at: string`

    RFC 3339 datetime string indicating when the certificate was archived. Null if it is still in the trusted set.

    format: date-time

  - `created_at: string`

    RFC 3339 datetime string indicating when the certificate was registered.

    format: date-time

  - `expires_at: string`

    RFC 3339 datetime string indicating when the certificate expires, or `null` if it does not expire.

    format: date-time

  - `fingerprint: string`

    Lowercase hex SHA-256 fingerprint of the certificate's DER encoding.

  - `tunnel_id: string`

    ID of the tunnel the certificate is registered against.

#### Example

```bash
ant beta:tunnels:certificates retrieve \
  --api-key my-anthropic-api-key \
  --tunnel-id tunnel_id \
  --certificate-id certificate_id
```

##### Response (200)

```json
{
  "id": "id",
  "archived_at": "2019-12-27T18:11:19.117Z",
  "created_at": "2019-12-27T18:11:19.117Z",
  "expires_at": "2019-12-27T18:11:19.117Z",
  "fingerprint": "fingerprint",
  "tunnel_id": "tunnel_id",
  "type": "tunnel_certificate"
}
```

### List Tunnel Certificates

`$ ant beta:tunnels:certificates list`

**GET** `/v1/tunnels/{tunnel_id}/certificates`

The Tunnels API is in research preview. It requires the `anthropic-beta: mcp-tunnels-2026-06-22` header and may change without a deprecation period. It supersedes the Admin API endpoints at `/v1/organizations/tunnels`, which remain available during a migration window.

Lists the certificates registered on a tunnel. Archived certificates are excluded unless include_archived is set.

#### Parameters

- `--tunnel-id: string` (path parameter)

  ID of the tunnel (`tnl_...`).

- `--include-archived: optional boolean` (query parameter)

  Whether to include archived certificates in the results. Defaults to false.

- `--limit: optional number` (query parameter)

  Maximum number of certificates to return per page. Defaults to 20, maximum 1000.

  format: int32

- `--page: optional string` (query parameter)

  Opaque pagination cursor from a previous `list_tunnel_certificates` response.

- `--beta: optional array of AnthropicBeta` (header parameter)

  Optional header to specify the beta version(s) you want to use.

- `--workspace-id: optional string` (header parameter)

  Optional header to select the Workspace for this request. The value is a Workspace ID (for example, `wrkspc_011CZkZaBF1tNoB5wlCeusgy`).

  Only needed for credentials that can act on more than one Workspace. A credential that belongs to a specific Workspace may omit it; if sent, it must match that Workspace.

#### Returns

- `BetaListTunnelCertificatesResponse: object`

  The tunnel's certificates.

  - `data: array of BetaTunnelCertificate`

    List of certificates, ordered by created_at descending.

    - `type: "tunnel_certificate"`

    - `id: string`

      Unique identifier for the certificate, prefixed with `tcrt_`.

    - `archived_at: string`

      RFC 3339 datetime string indicating when the certificate was archived. Null if it is still in the trusted set.

      format: date-time

    - `created_at: string`

      RFC 3339 datetime string indicating when the certificate was registered.

      format: date-time

    - `expires_at: string`

      RFC 3339 datetime string indicating when the certificate expires, or `null` if it does not expire.

      format: date-time

    - `fingerprint: string`

      Lowercase hex SHA-256 fingerprint of the certificate's DER encoding.

    - `tunnel_id: string`

      ID of the tunnel the certificate is registered against.

  - `next_page: string`

    Pagination cursor for the next page, or null if no more results.

#### Example

```bash
ant beta:tunnels:certificates list \
  --api-key my-anthropic-api-key \
  --tunnel-id tunnel_id
```

##### Response (200)

```json
{
  "data": [
    {
      "id": "id",
      "archived_at": "2019-12-27T18:11:19.117Z",
      "created_at": "2019-12-27T18:11:19.117Z",
      "expires_at": "2019-12-27T18:11:19.117Z",
      "fingerprint": "fingerprint",
      "tunnel_id": "tunnel_id",
      "type": "tunnel_certificate"
    }
  ],
  "next_page": "next_page"
}
```

### Archive Tunnel Certificate

`$ ant beta:tunnels:certificates archive`

**POST** `/v1/tunnels/{tunnel_id}/certificates/{certificate_id}/archive`

The Tunnels API is in research preview. It requires the `anthropic-beta: mcp-tunnels-2026-06-22` header and may change without a deprecation period. It supersedes the Admin API endpoints at `/v1/organizations/tunnels`, which remain available during a migration window.

Archives a tunnel certificate, removing it from the set Anthropic trusts for the tunnel. The certificate record is retained. Archiving the last non-archived certificate is permitted; the tunnel rejects MCP traffic until a new certificate is added.

#### Parameters

- `--tunnel-id: string` (path parameter)

  ID of the tunnel (`tnl_...`).

- `--certificate-id: string` (path parameter)

  ID of the certificate to archive (`tcrt_...`).

- `--beta: optional array of AnthropicBeta` (header parameter)

  Optional header to specify the beta version(s) you want to use.

- `--workspace-id: optional string` (header parameter)

  Optional header to select the Workspace for this request. The value is a Workspace ID (for example, `wrkspc_011CZkZaBF1tNoB5wlCeusgy`).

  Only needed for credentials that can act on more than one Workspace. A credential that belongs to a specific Workspace may omit it; if sent, it must match that Workspace.

#### Returns

- `beta_tunnel_certificate: object`

  A CA certificate attached to a tunnel.

  - `type: "tunnel_certificate"`

  - `id: string`

    Unique identifier for the certificate, prefixed with `tcrt_`.

  - `archived_at: string`

    RFC 3339 datetime string indicating when the certificate was archived. Null if it is still in the trusted set.

    format: date-time

  - `created_at: string`

    RFC 3339 datetime string indicating when the certificate was registered.

    format: date-time

  - `expires_at: string`

    RFC 3339 datetime string indicating when the certificate expires, or `null` if it does not expire.

    format: date-time

  - `fingerprint: string`

    Lowercase hex SHA-256 fingerprint of the certificate's DER encoding.

  - `tunnel_id: string`

    ID of the tunnel the certificate is registered against.

#### Example

```bash
ant beta:tunnels:certificates archive \
  --api-key my-anthropic-api-key \
  --tunnel-id tunnel_id \
  --certificate-id certificate_id
```

##### Response (200)

```json
{
  "id": "id",
  "archived_at": "2019-12-27T18:11:19.117Z",
  "created_at": "2019-12-27T18:11:19.117Z",
  "expires_at": "2019-12-27T18:11:19.117Z",
  "fingerprint": "fingerprint",
  "tunnel_id": "tunnel_id",
  "type": "tunnel_certificate"
}
```