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HomeDocsClaude Developer Platform 25 Aug 2026
One change · api

Create Tunnel Certificate changedapi/beta/tunnels/certificates/create

Nearest release: v2.1.245, published an hour after this site recorded the change. Shown because the two are within 24 hours of each other. Nothing here says the release caused the edit.

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Lines−17removed
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First seen 14 Aug 2026 this site's first read of the page
Recorded edits18to this page, all time

# Create Tunnel Certificate ## Path parameters ## Headers ## Body parameters ## Returns ## Example ### Response (200) ## Create Tunnel Certificate ### Path Parameters ### Header Parameters ### Body Parameters ### Returns ### Example #### Response

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1---
2title: Create Tunnel Certificate
3url: https://platform.claude.com/docs/en/api/beta/tunnels/certificates/create
4---
1# Create Tunnel Certificate
52 
6## Create Tunnel Certificate
3**POST** `/v1/tunnels/{tunnel_id}/certificates`
74 
8**post** `/v1/tunnels/{tunnel_id}/certificates`
9 
105The 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.
116 
127Registers 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.
138 
14### Path Parameters
9## Path parameters
1510 
1611- `tunnel_id: string`
1712 
18### Header Parameters
13## Headers
1914 
2015- `"anthropic-beta": optional array of AnthropicBeta`
2116 
from line 88
9388 
9489 - `"mid-conversation-tool-changes-2026-07-01"`
9590 
96### Body Parameters
91## Body parameters
9792 
9893- `ca_certificate_pem: string`
9994 
10095 PEM-encoded X.509 CA certificate. Must contain exactly one certificate and no private-key material. Maximum 8KB.
10196 
102### Returns
97 maxLength: 8192
10398 
104- `BetaTunnelCertificate object { id, archived_at, created_at, 4 more }`
99## Returns
105100 
101- `BetaTunnelCertificate object`
102 
106103 A CA certificate attached to a tunnel.
107104 
108105 - `id: string`
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113110 
114111 A timestamp in RFC 3339 format
115112 
113 format: date-time
114 
116115 - `created_at: string`
117116 
118117 A timestamp in RFC 3339 format
119118 
119 format: date-time
120 
120121 - `expires_at: string or null`
121122 
122123 A timestamp in RFC 3339 format
123124 
125 format: date-time
126 
124127 - `fingerprint: string`
125128 
126129 Lowercase hex SHA-256 fingerprint of the certificate's DER encoding.
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131134 
132135 - `type: "tunnel_certificate"`
133136 
134 - `"tunnel_certificate"`
137## Example
135138 
136### Example
137 
138```http
139```bash
139140curl https://api.anthropic.com/v1/tunnels/$TUNNEL_ID/certificates \
140141 -H 'Content-Type: application/json' \
141142 -H 'anthropic-version: 2023-06-01' \
from line 147
146147 }'
147148```
148149 
149#### Response
150### Response (200)
150151 
151152```json
152153{
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