Cannot create installation access token for App. Endpoint 404s

[lfloyd117]

Select Topic Area

Question

Body

Marking as a question because I feel like I have to be doing something wrong.
I am trying to get an installation token from a GitHub app so I can have some external script clone a private repo our app has access to.
I have followed this guide.

I am making a POST request as per the docs:

curl --request POST --url "https://api.github.com/app/installations/<APP-ID>/access_tokens" --header "Accept: application/vnd.github+json" --header "Authorization: Bearer <JWT>" --header "X-GitHub-Api-Version: 2022-11-28"

I have tried both the App ID and the Client ID for <APP-ID> above, and done the same for the issuer in the JWT.
Doing this I get 404 everytime:

{
    "message": "Not Found",
    "documentation_url": "https://docs.github.com/rest/reference/apps#create-an-installation-access-token-for-an-app",
    "status": "404"
}

However, if I intentionally mess up the token or don't provide auth, I get a 401 Bad Credentials, which is telling me my auth is correct, but for some reason it is 404ing. What am I missing?

I do not think this is relevant: https://github.com/orgs/community/discussions/71963 as I am using the POST method and still getting 404.

[tmilost]

Make sure you’re using the installation ID (not the app ID or client ID) in the URL. You can list your installations by calling GET /app/installations with your JWT

[tmilost]

404 Not Found from the /app/installations/<installation_id>/access_tokens endpoint usually means the installation ID is incorrect, or your app doesn’t have access to that installation.

[lfloyd117]

What exact URL am I supposed to GET at? https://api.github.com/app/installations 404s as well and I wouldn't think is correct as it includes no specific user or owner.

[tmilost]

You can identify a user by their token JWT, GET /app/installations + JWT
try looking somewhere here
https://github.com/settings/installations/

[lfloyd117]

It's for an organization, not my user. I don't see the app listed there.
If I go to the App under GitHub Apps in the org, I can see it, but there is no "installation ID"

EDIT: I see it in the URL I believe for the org settings. Trying now

[tmilost]

https://github.com/organizations/%3CORG-NAME%3E/settings/installations

If you click on the app that you see, in the URL, it should show ID, https://github.com/organizations/%3CORG-NAME%3E/settings/installations/ <ID