curl -X PUT 'https://api.github.com/repos/example-owner/example-repo/codespaces/secrets/example-secret-name' \
  -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 '{}'

# PUT /repos/{owner}/{repo}/codespaces/secrets/{secret_name} (GitHub API)
Base URL: https://api.github.com
Auth: Authorization; GitHub token; required.
Request formats: application/json.
Last verified: 2026-10-20

> Create or update a repository secret

## 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 PUT 'https://api.github.com/repos/example-owner/example-repo/codespaces/secrets/example-secret-name' \
  -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 '{}'

## Parameters
| Name | In | Type | Required | Description |
| :--- | :--- | :--- | :--- | :--- |
| owner | path | string | Yes | The account owner of the repository. The name is not case sensitive. |
| repo | path | string | Yes | The name of the repository without the `.git` extension. The name is not case... |
| secret_name | path | string | Yes | The name of the secret. |
| encrypted_value | body | string | No | Value for your secret, encrypted with [LibSodium](https://libsodium.gitbook.i... |
| key_id | body | string | No | ID of the key you used to encrypt the secret. |

## Response example
{}

---
Need an API key? Get one at https://github.com/settings/tokens

PUT

PUT /repos/{owner}/{repo}/codespaces/secrets/{secret_name} — GitHub API

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

GitHub API

Create or update a repository secret

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
→ 281 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 PUT 'https://api.github.com/repos/example-owner/example-repo/codespaces/secrets/example-secret-name' \  -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 '{}'

Parameters

Name	In	Type	Required	Description
owner	path	string	Yes	The account owner of the repository. The name is not case sensitive.
repo	path	string	Yes	The name of the repository without the `.git` extension. The name is not case sensitive.
secret_name	path	string	Yes	The name of the secret.
encrypted_value	body	string	No	Value for your secret, encrypted with [LibSodium](https://libsodium.gitbook.io/doc/bindings_for_other_languages) using the public key retrieved from the [Get a repository public key](https://docs.github.com/rest/codespaces/repository-secrets#get-a-repository-public-key) endpoint.
key_id	body	string	No	ID of the key you used to encrypt the secret.

Response 200 OK

{}

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