GraphQL query to GitHub failing with HTTP 422 Unprocessable Entity - github

Question

I am currently working on a simple GitHub GraphQL client in NodeJS.
Given that GitHub GraphQL API is accessible only with an access token, I set up an OAuth2 request to grab the access token and then tried to fire a simple GraphQL query.
OAuth2 flow gives me the token, but when I send the query, I get HTTP 422.
Here below simplified snippets from my own code:
Prepare the URL to display on UI side, to let user click it and perform login with GitHub
getGitHubAuthenticationURL(): string {
const searchParams = new URLSearchParams({
client_id,
state,
login,
scope,
});
return `https://github.com/login/oauth/authorize?${searchParams}`;
}
My ExpressJs server listening to GitHub OAuth2 responses
httpServer.get("/from-github/oauth-callback", async (req, res) => {
const {
query: { code, state },
} = req;
const accessToken = await requestGitHubAccessToken(code as string);
[...]
});
Requesting access token
async requestToken(code: string): Promise<string> {
const { data } = await axios.post(
"https://github.com/login/oauth/access_token",
{
client_id,
client_secret,
code
},
{
headers: {
"Content-Type": "application/json",
Accept: "application/json",
},
}
);
return data.access_token;
}
Firing simple graphql query
const data = await axios.post(
"https://graphql.github.com/graphql/proxy",
{ query: "{ viewer { login } }"},
{
headers: {
Authorization: `Bearer ${accessToken}`,
"Content-Type": "application/json",
},
}
);
Do you guys have any clue?
Perhaps I am doing something wrong with the OAuth2 flow? As in most of the examples I found on the web, a personal token is used for this purpose, generated on GitHub, but I would like to use OAuth2 instead.
Thanks in advance for any help, I really appreciate it!
EDIT
I changed the query from { query: "query { viewer { login } }"} to { query: "{ viewer { login } }"}, nonetheless, the issue is still present.

Answer 1

I finally found the solution:
Change the URL from https://graphql.github.com/graphql/proxy to https://api.github.com/graphql, see here
Add the following HTTP headers
"Content-Type": "application/json"
"Content-Length"
"User-Agent"
Hope this will help others out there.