Resource
How to Use Multi-Step Prompts
Big tasks fail in single prompts. Multi-step prompting breaks a goal into focused, sequential prompts — each output validated, then fed into the next.
OAuth & SSO Integration Prompt
Integrate OAuth/SSO without the footguns — the right flow for your client, state and PKCE, token handling, account linking, and the provider-edge cases that break logins.
Overview
OAuth is easy to wire up and easy to wire up insecurely. This prompt plans the integration: the correct flow for your client type (auth code + PKCE, not implicit), CSRF protection via state, where tokens live, how provider accounts link to local users, and the edge cases that cause real outages — email changes, revoked grants, and the user who signs up with Google then tries a password.
How to use this resource
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Define the access-control context
Note the providers you're integrating, the client type (web, SPA, mobile, or server), and how your existing accounts work. The flow, token, and linking decisions all depend on these.
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Open this resource in Multi-Step Prompt Builder
Load the prompt into Multi-Step Prompt Builder and fill in your context. Building it across stages keeps the flow, token handling, and account-linking decisions worked out separately instead of tangled together.
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Review the generated integration design
Walk through the recommended flow, the token handling, the verified-email linking rule, and how each provider edge case resolves, checking the choices against your client type.
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Tighten the assumptions and re-run
Where a decision doesn't fit your stack — a different client type or a stricter linking rule — adjust the context and regenerate so the plan matches what you'll actually build.
Why This Works
- Auth code + PKCE vs implicit is the choice most insecure integrations get wrong
- Verified-email account linking closes a common account-takeover path
- The provider edge cases are where SSO integrations break in production
Best for
- Products adding social or enterprise SSO
- Teams new to OAuth's security details
- Apps mixing SSO and password accounts
Not for
- Choosing whether to use SSO at all — use the Authentication Strategy Prompt
- Reviewing an existing JWT — use the JWT Security Review Prompt
Use cases
- Adding 'Sign in with Google/GitHub/etc.' safely
- Planning account linking between SSO and local accounts
- Avoiding the OAuth flow and token mistakes that cause breaches
FAQ
How does building the OAuth prompt in Multi-Step Prompt Builder help versus pasting it all at once?
Building it across stages keeps the six PLAN sections worked out separately, so FLOW, CSRF & REPLAY, TOKEN HANDLING, ACCOUNT LINKING, SCOPES, and EDGE CASES don't get tangled into one blurred answer. Multi-Step Prompt Builder outputs the staged prompt; you run it in your own assistant, and the design it returns is yours to review against your client type.
Why does this prompt insist on a verified-email match before linking an SSO account to an existing user?
The ACCOUNT LINKING section and the RULES enforce linking only on a verified email match because linking on an unverified email lets an attacker claim a local account by signing in with a provider — the takeover path the prompt exists to close. The output is a linking design and how each edge case resolves; you still validate it against your own account model.
Can I treat the OAuth integration design this prompt returns as production-ready and secure?
Treat it as a plan, not a security guarantee. The prompt recommends a flow (auth code + PKCE, never implicit), token handling, and how edge cases like a revoked grant or the mixed-method user resolve — but NewPrompt does not run the flow or verify tokens. Your team owns the security review and production validation before you ship.
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Break a big goal into a sequential prompt workflow — each step with an objective, prompt, and expected output.
Guides for this resource
Guide
How to Plan an OAuth or SSO Integration With AI
SSO arrives as a checkbox and lands as a lifecycle. Plan the integration before you build it: the identity key, the linking rule that isn't account takeover, what a provider's groups may and may not grant, and what happens when somebody leaves.