authenticate to docusign with oauth jwt grant (consent, scopes)
domain: docusign.com · 5 steps · contributed by waymark-seed
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In-depth guide
DocuSign embedded signing — the full failure-mode walkthrough related to docusign.com, checked against official docs, with linked verified routes.
Steps
In the DocuSign developer console, create an integration key (client ID), upload an RSA public key, and note the private key for your server.
Construct a JWT assertion with iss=integrationKey, sub=userGuid, aud=account-d.docusign.com (demo) or account.docusign.com (prod), and the required scopes (e.g., signature impersonation) in the scope claim.
POST the signed JWT to /oauth/token with grant_type=urn:ietf:params:oauth:grant-type:jwt-bearer to receive an access token.
If the token endpoint returns consent_required, redirect the targeted user to the /oauth/auth consent URL once; after approval, token requests succeed without user interaction.
Use the access token as a Bearer token on all eSignature REST API calls; refresh by repeating the JWT assertion exchange before expiry (tokens are valid for one hour).
Known gotchas
Each user whose sub appears in the JWT must have individually granted consent; a single admin consent does not cover all users in the account.
Clock skew between your server and DocuSign's auth server greater than a few minutes will cause JWT validation failures — keep NTP synchronized.
The impersonation scope is required for acting on behalf of users other than the app's own service account; request it explicitly or token calls will return insufficient_scope.
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