G2 API

REST discovered

Details

URL: https://data.g2.com
Spec: https://data.g2.com/openapi/v2.yaml
Docs: https://data.g2.com/api/v2/docs/index.html

Authentication

G2 access token / API token + G2 OAuth app (client ID + client secret) discovered

G2 access token / API token bearer Get token ↗

Create or log into your organization in the G2 Developer Portal. To mint a token, open the Access Tokens tab, choose Generate Token, name the token, choose a Resource Owner (User or Organization), assign endpoint permissions, and save. The portal reveals the token once; copy it and store it securely. G2's docs say you can then use it against the G2 API reference.

G2 OAuth app (client ID + client secret) oauth2 Set up OAuth ↗

Create or log into your organization in the G2 Developer Portal. In OAuth Apps, select New OAuth App, enter the app name, privacy-policy URL, terms-of-service URL, and redirect URL, optionally mark it Confidential if it can store a secret, choose endpoint Permissions, and save. Open the app's Details view to copy the Client ID and Secret. Use those with G2's OAuth flow (https://www.g2.com/oauth/authorize and https://www.g2.com/oauth/token) and request only scopes matching the permissions enabled for the app. Example documented scopes include openid, profile, products.read, and products.reviews.read.