curl -X POST 'https://api.github.com/user/ssh_signing_keys' \
  -H "Authorization: Bearer $GITHUB_TOKEN" \
  -H 'Accept: application/vnd.github+json' \
  -H 'X-GitHub-Api-Version: 2026-03-10' \
  -H 'Content-Type: application/json' \
  -d '{
  "key": "example-key"
}'

# POST /user/ssh_signing_keys (GitHub API)
Base URL: https://api.github.com
Auth: Authorization; GitHub token; required.
Request formats: application/json.
Last verified: 2026-10-20

> Create a SSH signing key for the authenticated user

## Critical Gotchas
* GitHub recommends an `Accept: application/vnd.github+json` header and an explicit `X-GitHub-Api-Version` header.
* Fine-grained tokens only authorize repositories and permissions selected when the token is created.

## cURL
curl -X POST 'https://api.github.com/user/ssh_signing_keys' \
  -H "Authorization: Bearer $GITHUB_TOKEN" \
  -H 'Accept: application/vnd.github+json' \
  -H 'X-GitHub-Api-Version: 2026-03-10' \
  -H 'Content-Type: application/json' \
  -d '{
  "key": "example-key"
}'

## Parameters
| Name | In | Type | Required | Description |
| :--- | :--- | :--- | :--- | :--- |
| key | body | string | Yes | The public SSH key to add to your GitHub account. For more information, see "... |
| title | body | string | No | A descriptive name for the new key. |

## Response example
{"key":"string","id":0,"title":"string","created_at":"2026-09-03T00:00:00Z"}

---
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POST

POST /user/ssh_signing_keys — GitHub API

GitHub token (required); https://api.github.com

GitHub API

Create a SSH signing key for the authenticated user

Base URL: https://api.github.com
Auth: Authorization: Bearer <GITHUB_API_KEY>
Last verified: 2026-10-20 · upstream hash matched

Actions Try in browser→

Agents: curl -H "Accept: text/markdown" this URL
→ 216 tokens · Vary: Accept

Critical gotchas

GitHub recommends an Accept: application/vnd.github+json header and an explicit X-GitHub-Api-Version header.

Fine-grained tokens only authorize repositories and permissions selected when the token is created.

cURL

curl -X POST 'https://api.github.com/user/ssh_signing_keys' \  -H "Authorization: Bearer $GITHUB_TOKEN" \  -H 'Accept: application/vnd.github+json' \  -H 'X-GitHub-Api-Version: 2026-03-10' \  -H 'Content-Type: application/json' \  -d '{  "key": "example-key"}'

Parameters

Name	In	Type	Required	Description
title	body	string	No	A descriptive name for the new key.
key	body	string	Yes	The public SSH key to add to your GitHub account. For more information, see "[Checking for existing SSH keys](https://docs.github.com/authentication/connecting-to-github-with-ssh/checking-for-existing-ssh-keys)."

Response 200 OK

{
  "key": "string",
  "id": 0,
  "title": "string",
  "created_at": "2026-09-03T00:00:00Z"
}

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