--- title: Certificates url: https://platform.claude.com/docs/en/api/typescript/beta/tunnels/certificates --- # Certificates ## Create Tunnel Certificate `client.beta.tunnels.certificates.create(tunnelID, params, options?): BetaTunnelCertificate` **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 - `tunnelID: string` (path parameter) ID of the tunnel (`tnl_...`). - `params: CertificateCreateParams` - `ca_certificate_pem: string` PEM-encoded X.509 CA certificate. Must contain exactly one certificate and no private-key material. Maximum 8KB. maxLength: 8192 - `betas?: Array` (header parameter) Optional header to specify the beta version(s) you want to use. - `(string & {})` - `"message-batches-2024-09-24"` - `"prompt-caching-2024-07-31"` - `"computer-use-2024-10-22"` - `"computer-use-2025-01-24"` - `"pdfs-2024-09-25"` - `"token-counting-2024-11-01"` - `"token-efficient-tools-2025-02-19"` - `"output-128k-2025-02-19"` - `"files-api-2025-04-14"` - `"mcp-client-2025-04-04"` - `"mcp-client-2025-11-20"` - `"dev-full-thinking-2025-05-14"` - `"interleaved-thinking-2025-05-14"` - `"code-execution-2025-05-22"` - `"extended-cache-ttl-2025-04-11"` - `"context-1m-2025-08-07"` - `"context-management-2025-06-27"` - `"model-context-window-exceeded-2025-08-26"` - `"skills-2025-10-02"` - `"fast-mode-2026-02-01"` - `"output-300k-2026-03-24"` - `"user-profiles-2026-03-24"` - `"user-profiles-2026-08-18"` - `"user-profiles-2026-09-04"` - `"advisor-tool-2026-03-01"` - `"managed-agents-2026-04-01"` - `"cache-diagnosis-2026-04-07"` - `"dreaming-2026-04-21"` - `"thinking-token-count-2026-05-13"` - `"server-side-fallback-2026-06-01"` - `"server-side-fallback-2026-07-01"` - `"fallback-credit-2026-06-01"` - `"fallback-credit-2026-07-01"` - `"agent-memory-2026-07-22"` - `"mid-conversation-tool-changes-2026-07-01"` - `"compact-2026-01-12"` - `"computer-use-2025-11-24"` - `"mcp-tunnels-2026-06-22"` - `"structured-outputs-2025-11-13"` - `"task-budgets-2026-03-13"` - `"thinking-display-updates-2026-08-18"` - `"ce-user-management-2026-07-13"` - `"mid-conversation-output-config-2026-07-01"` - `"thinking-binding-controls-2026-08-01"` - `"mid-conversation-system-clear-at-2026-08-21"` - `"compact-2026-09-04"` - `"inline-tools-2026-09-15"` - `"mcp-client-2026-09-15"` - `"ce-plugins-2026-09-01"` - `"spend-limit-reads-2026-09-26"` - `workspace_id?: 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 - `interface BetaTunnelCertificate` A CA certificate attached to a tunnel. - `type: "tunnel_certificate"` - `id: string` Unique identifier for the certificate, prefixed with `tcrt_`. - `archived_at: string | null` 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 | null` 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 ```typescript import Anthropic from "@anthropic-ai/sdk"; const client = new Anthropic({ apiKey: process.env["ANTHROPIC_API_KEY"] // This is the default and can be omitted }); const betaTunnelCertificate = await client.beta.tunnels.certificates.create("tunnel_id", { ca_certificate_pem: "ca_certificate_pem" }); console.log(betaTunnelCertificate.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" } ``` ## Get Tunnel Certificate `client.beta.tunnels.certificates.retrieve(certificateID, params, options?): BetaTunnelCertificate` **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 - `certificateID: string` (path parameter) ID of the certificate (`tcrt_...`). - `params: CertificateRetrieveParams` - `tunnel_id: string` (path parameter) ID of the tunnel (`tnl_...`). - `betas?: Array` (header parameter) Optional header to specify the beta version(s) you want to use. - `(string & {})` - `"message-batches-2024-09-24"` - `"prompt-caching-2024-07-31"` - `"computer-use-2024-10-22"` - `"computer-use-2025-01-24"` - `"pdfs-2024-09-25"` - `"token-counting-2024-11-01"` - `"token-efficient-tools-2025-02-19"` - `"output-128k-2025-02-19"` - `"files-api-2025-04-14"` - `"mcp-client-2025-04-04"` - `"mcp-client-2025-11-20"` - `"dev-full-thinking-2025-05-14"` - `"interleaved-thinking-2025-05-14"` - `"code-execution-2025-05-22"` - `"extended-cache-ttl-2025-04-11"` - `"context-1m-2025-08-07"` - `"context-management-2025-06-27"` - `"model-context-window-exceeded-2025-08-26"` - `"skills-2025-10-02"` - `"fast-mode-2026-02-01"` - `"output-300k-2026-03-24"` - `"user-profiles-2026-03-24"` - `"user-profiles-2026-08-18"` - `"user-profiles-2026-09-04"` - `"advisor-tool-2026-03-01"` - `"managed-agents-2026-04-01"` - `"cache-diagnosis-2026-04-07"` - `"dreaming-2026-04-21"` - `"thinking-token-count-2026-05-13"` - `"server-side-fallback-2026-06-01"` - `"server-side-fallback-2026-07-01"` - `"fallback-credit-2026-06-01"` - `"fallback-credit-2026-07-01"` - `"agent-memory-2026-07-22"` - `"mid-conversation-tool-changes-2026-07-01"` - `"compact-2026-01-12"` - `"computer-use-2025-11-24"` - `"mcp-tunnels-2026-06-22"` - `"structured-outputs-2025-11-13"` - `"task-budgets-2026-03-13"` - `"thinking-display-updates-2026-08-18"` - `"ce-user-management-2026-07-13"` - `"mid-conversation-output-config-2026-07-01"` - `"thinking-binding-controls-2026-08-01"` - `"mid-conversation-system-clear-at-2026-08-21"` - `"compact-2026-09-04"` - `"inline-tools-2026-09-15"` - `"mcp-client-2026-09-15"` - `"ce-plugins-2026-09-01"` - `"spend-limit-reads-2026-09-26"` - `workspace_id?: 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 - `interface BetaTunnelCertificate` A CA certificate attached to a tunnel. - `type: "tunnel_certificate"` - `id: string` Unique identifier for the certificate, prefixed with `tcrt_`. - `archived_at: string | null` 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 | null` 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 ```typescript import Anthropic from "@anthropic-ai/sdk"; const client = new Anthropic({ apiKey: process.env["ANTHROPIC_API_KEY"] // This is the default and can be omitted }); const betaTunnelCertificate = await client.beta.tunnels.certificates.retrieve( "certificate_id", { tunnel_id: "tunnel_id" } ); console.log(betaTunnelCertificate.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 `client.beta.tunnels.certificates.list(tunnelID, params?, options?): PageCursor` **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 - `tunnelID: string` (path parameter) ID of the tunnel (`tnl_...`). - `params: CertificateListParams` - `include_archived?: boolean` (query parameter) Whether to include archived certificates in the results. Defaults to false. - `limit?: number` (query parameter) Maximum number of certificates to return per page. Defaults to 20, maximum 1000. format: int32 - `page?: string` (query parameter) Opaque pagination cursor from a previous `list_tunnel_certificates` response. - `betas?: Array` (header parameter) Optional header to specify the beta version(s) you want to use. - `(string & {})` - `"message-batches-2024-09-24"` - `"prompt-caching-2024-07-31"` - `"computer-use-2024-10-22"` - `"computer-use-2025-01-24"` - `"pdfs-2024-09-25"` - `"token-counting-2024-11-01"` - `"token-efficient-tools-2025-02-19"` - `"output-128k-2025-02-19"` - `"files-api-2025-04-14"` - `"mcp-client-2025-04-04"` - `"mcp-client-2025-11-20"` - `"dev-full-thinking-2025-05-14"` - `"interleaved-thinking-2025-05-14"` - `"code-execution-2025-05-22"` - `"extended-cache-ttl-2025-04-11"` - `"context-1m-2025-08-07"` - `"context-management-2025-06-27"` - `"model-context-window-exceeded-2025-08-26"` - `"skills-2025-10-02"` - `"fast-mode-2026-02-01"` - `"output-300k-2026-03-24"` - `"user-profiles-2026-03-24"` - `"user-profiles-2026-08-18"` - `"user-profiles-2026-09-04"` - `"advisor-tool-2026-03-01"` - `"managed-agents-2026-04-01"` - `"cache-diagnosis-2026-04-07"` - `"dreaming-2026-04-21"` - `"thinking-token-count-2026-05-13"` - `"server-side-fallback-2026-06-01"` - `"server-side-fallback-2026-07-01"` - `"fallback-credit-2026-06-01"` - `"fallback-credit-2026-07-01"` - `"agent-memory-2026-07-22"` - `"mid-conversation-tool-changes-2026-07-01"` - `"compact-2026-01-12"` - `"computer-use-2025-11-24"` - `"mcp-tunnels-2026-06-22"` - `"structured-outputs-2025-11-13"` - `"task-budgets-2026-03-13"` - `"thinking-display-updates-2026-08-18"` - `"ce-user-management-2026-07-13"` - `"mid-conversation-output-config-2026-07-01"` - `"thinking-binding-controls-2026-08-01"` - `"mid-conversation-system-clear-at-2026-08-21"` - `"compact-2026-09-04"` - `"inline-tools-2026-09-15"` - `"mcp-client-2026-09-15"` - `"ce-plugins-2026-09-01"` - `"spend-limit-reads-2026-09-26"` - `workspace_id?: 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 - `interface BetaTunnelCertificate` A CA certificate attached to a tunnel. - `type: "tunnel_certificate"` - `id: string` Unique identifier for the certificate, prefixed with `tcrt_`. - `archived_at: string | null` 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 | null` 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 ```typescript import Anthropic from "@anthropic-ai/sdk"; const client = new Anthropic({ apiKey: process.env["ANTHROPIC_API_KEY"] // This is the default and can be omitted }); // Automatically fetches more pages as needed. for await (const betaTunnelCertificate of client.beta.tunnels.certificates.list("tunnel_id")) { console.log(betaTunnelCertificate.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 `client.beta.tunnels.certificates.archive(certificateID, params, options?): BetaTunnelCertificate` **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 - `certificateID: string` (path parameter) ID of the certificate to archive (`tcrt_...`). - `params: CertificateArchiveParams` - `tunnel_id: string` (path parameter) ID of the tunnel (`tnl_...`). - `betas?: Array` (header parameter) Optional header to specify the beta version(s) you want to use. - `(string & {})` - `"message-batches-2024-09-24"` - `"prompt-caching-2024-07-31"` - `"computer-use-2024-10-22"` - `"computer-use-2025-01-24"` - `"pdfs-2024-09-25"` - `"token-counting-2024-11-01"` - `"token-efficient-tools-2025-02-19"` - `"output-128k-2025-02-19"` - `"files-api-2025-04-14"` - `"mcp-client-2025-04-04"` - `"mcp-client-2025-11-20"` - `"dev-full-thinking-2025-05-14"` - `"interleaved-thinking-2025-05-14"` - `"code-execution-2025-05-22"` - `"extended-cache-ttl-2025-04-11"` - `"context-1m-2025-08-07"` - `"context-management-2025-06-27"` - `"model-context-window-exceeded-2025-08-26"` - `"skills-2025-10-02"` - `"fast-mode-2026-02-01"` - `"output-300k-2026-03-24"` - `"user-profiles-2026-03-24"` - `"user-profiles-2026-08-18"` - `"user-profiles-2026-09-04"` - `"advisor-tool-2026-03-01"` - `"managed-agents-2026-04-01"` - `"cache-diagnosis-2026-04-07"` - `"dreaming-2026-04-21"` - `"thinking-token-count-2026-05-13"` - `"server-side-fallback-2026-06-01"` - `"server-side-fallback-2026-07-01"` - `"fallback-credit-2026-06-01"` - `"fallback-credit-2026-07-01"` - `"agent-memory-2026-07-22"` - `"mid-conversation-tool-changes-2026-07-01"` - `"compact-2026-01-12"` - `"computer-use-2025-11-24"` - `"mcp-tunnels-2026-06-22"` - `"structured-outputs-2025-11-13"` - `"task-budgets-2026-03-13"` - `"thinking-display-updates-2026-08-18"` - `"ce-user-management-2026-07-13"` - `"mid-conversation-output-config-2026-07-01"` - `"thinking-binding-controls-2026-08-01"` - `"mid-conversation-system-clear-at-2026-08-21"` - `"compact-2026-09-04"` - `"inline-tools-2026-09-15"` - `"mcp-client-2026-09-15"` - `"ce-plugins-2026-09-01"` - `"spend-limit-reads-2026-09-26"` - `workspace_id?: 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 - `interface BetaTunnelCertificate` A CA certificate attached to a tunnel. - `type: "tunnel_certificate"` - `id: string` Unique identifier for the certificate, prefixed with `tcrt_`. - `archived_at: string | null` 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 | null` 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 ```typescript import Anthropic from "@anthropic-ai/sdk"; const client = new Anthropic({ apiKey: process.env["ANTHROPIC_API_KEY"] // This is the default and can be omitted }); const betaTunnelCertificate = await client.beta.tunnels.certificates.archive( "certificate_id", { tunnel_id: "tunnel_id" } ); console.log(betaTunnelCertificate.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" } ``` ## Domain types ### Beta Tunnel Certificate - `interface BetaTunnelCertificate` A CA certificate attached to a tunnel. - `type: "tunnel_certificate"` - `id: string` Unique identifier for the certificate, prefixed with `tcrt_`. - `archived_at: string | null` 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 | null` 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.