# Singpass Developer Docs

## Singpass Developer Docs

- [Singpass APIs Documentation](https://docs.developer.singpass.gov.sg/docs/getting-started/readme.md): 👋 Your one-stop guide to integrating Singpass Login and Singpass Myinfo
- [Quick Start](https://docs.developer.singpass.gov.sg/docs/getting-started/quick-start.md): Get started with Singpass APIs onboarding
- [Pre-requisites for onboarding](https://docs.developer.singpass.gov.sg/docs/getting-started/pre-requisites-for-onboarding.md)
- [User Device & Software Requirement](https://docs.developer.singpass.gov.sg/docs/getting-started/user-device-and-software-requirement.md)
- [User Journey](https://docs.developer.singpass.gov.sg/docs/getting-started/user-journey.md)
- [App Logo](https://docs.developer.singpass.gov.sg/docs/getting-started/app-logo.md)
- [Singpass Button Design Specification](https://docs.developer.singpass.gov.sg/docs/getting-started/singpass-button-design-specification.md)
- [Singpass Brand Guidelines](https://docs.developer.singpass.gov.sg/docs/getting-started/singpass-brand-guidelines.md)
- [Demo App & Sample Code](https://docs.developer.singpass.gov.sg/docs/getting-started/demo-app-and-sample-codes.md)
- [Singpass Login](https://docs.developer.singpass.gov.sg/docs/products/singpass-login.md)
- [Key Principles](https://docs.developer.singpass.gov.sg/docs/products/singpass-login/key-principles.md)
- [FAQ](https://docs.developer.singpass.gov.sg/docs/products/singpass-login/faq.md): Frequently Asked Questions about Singpass Login
- [Singpass Myinfo](https://docs.developer.singpass.gov.sg/docs/products/singpass-myinfo.md)
- [Key Principles](https://docs.developer.singpass.gov.sg/docs/products/singpass-myinfo/key-principles.md): Partners are to comply with Myinfo key principles for your integration and submission of documents.
- [Data Display Guidelines](https://docs.developer.singpass.gov.sg/docs/products/singpass-myinfo/data-display-guidelines.md): This is for CPF Account Balance, Principal Name and NOA (Detailed)
- [Scheduled Downtimes](https://docs.developer.singpass.gov.sg/docs/products/singpass-myinfo/scheduled-downtimes.md)
- [FAQ](https://docs.developer.singpass.gov.sg/docs/products/singpass-myinfo/faq.md): Frequently Asked Questions about Myinfo
- [Singpass Face Verification](https://docs.developer.singpass.gov.sg/docs/products/singpass-face-verification.md)
- [SFV Integration Guide](https://docs.developer.singpass.gov.sg/docs/products/singpass-face-verification/sfv-integration-guide.md)
- [Overview of Singpass](https://docs.developer.singpass.gov.sg/docs/introduction/overview-of-singpass.md)
- [Understanding the basics of OIDC](https://docs.developer.singpass.gov.sg/docs/introduction/understanding-the-basics-of-oidc.md)
- [Changelog](https://docs.developer.singpass.gov.sg/docs/technical-specifications/changelog.md)
- [Integration Guide](https://docs.developer.singpass.gov.sg/docs/technical-specifications/integration-guide.md)
- [1. The Authorization Request](https://docs.developer.singpass.gov.sg/docs/technical-specifications/integration-guide/1.-authorization-request.md)
- [2. Handling the Redirect](https://docs.developer.singpass.gov.sg/docs/technical-specifications/integration-guide/2.-handling-the-redirect.md)
- [3. The Token Request](https://docs.developer.singpass.gov.sg/docs/technical-specifications/integration-guide/3.-token-exchange.md)
- [4. Parsing the ID Token](https://docs.developer.singpass.gov.sg/docs/technical-specifications/integration-guide/4.-parsing-the-id-token.md)
- [5. The Userinfo Request](https://docs.developer.singpass.gov.sg/docs/technical-specifications/integration-guide/5.-requesting-for-userinfo.md)
- [Technical Concepts](https://docs.developer.singpass.gov.sg/docs/technical-specifications/technical-concepts.md)
- [JSON Web Key Sets (JWKS)](https://docs.developer.singpass.gov.sg/docs/technical-specifications/technical-concepts/json-web-key-sets-jwks.md)
- [Generation Of Client Assertion](https://docs.developer.singpass.gov.sg/docs/technical-specifications/technical-concepts/generation-of-client-assertion.md)
- [Proof Key for Code Exchange (PKCE)](https://docs.developer.singpass.gov.sg/docs/technical-specifications/technical-concepts/proof-key-for-code-exchange-pkce.md)
- [Demonstrating Proof of Possession (DPoP)](https://docs.developer.singpass.gov.sg/docs/technical-specifications/technical-concepts/demonstrating-proof-of-possession-dpop.md)
- [OpenID Provider Configuration](https://docs.developer.singpass.gov.sg/docs/technical-specifications/technical-concepts/openid-connect-discovery.md)
- [Migration Guides](https://docs.developer.singpass.gov.sg/docs/technical-specifications/migration-guides.md)
- [Login / Myinfo (v5) apps](https://docs.developer.singpass.gov.sg/docs/technical-specifications/migration-guides/login-myinfo-v5-apps.md)
- [Myinfo (v3) apps](https://docs.developer.singpass.gov.sg/docs/technical-specifications/migration-guides/myinfo-v3-apps.md)
- [Myinfo (v4) apps](https://docs.developer.singpass.gov.sg/docs/technical-specifications/migration-guides/myinfo-v4-apps.md)
- [Myinfo Business (v1/v2) Person v3 flows](https://docs.developer.singpass.gov.sg/docs/technical-specifications/migration-guides/migrating-mib-v1-v2-person-v3-to-myinfo-v5.md): Migration guide for Myinfo Business (v1/v2) partners whose applications use the legacy Myinfo v3 APIs to retrieve individual information.
- [Pricing](https://docs.developer.singpass.gov.sg/docs/pricing/pricing.md)
- [Understanding the Data](https://docs.developer.singpass.gov.sg/docs/data-catalog-myinfo/understanding-the-data.md)
- [Local Registered Birth Records and Sponsored Child Records](https://docs.developer.singpass.gov.sg/docs/data-catalog-myinfo/understanding-the-data/local-registered-birth-records-and-sponsored-child-records.md)
- [CPF Contribution History (up to 15 months)](https://docs.developer.singpass.gov.sg/docs/data-catalog-myinfo/understanding-the-data/cpf-contribution-history-up-to-15-months.md)
- [Notice of Assessment (Basic)](https://docs.developer.singpass.gov.sg/docs/data-catalog-myinfo/understanding-the-data/notice-of-assessment-basic.md)
- [Notice of Assessment (Detailed)](https://docs.developer.singpass.gov.sg/docs/data-catalog-myinfo/understanding-the-data/notice-of-assessment-detailed.md)
- [Catalog](https://docs.developer.singpass.gov.sg/docs/data-catalog-myinfo/catalog.md): Scopes available are categorised under the following categories:
- [Start Here](https://docs.developer.singpass.gov.sg/docs/data-catalog-myinfo/catalog/start-here.md)
- [Personal](https://docs.developer.singpass.gov.sg/docs/data-catalog-myinfo/catalog/personal.md)
- [Finance](https://docs.developer.singpass.gov.sg/docs/data-catalog-myinfo/catalog/finance.md)
- [Education and Employment](https://docs.developer.singpass.gov.sg/docs/data-catalog-myinfo/catalog/education-and-employment.md)
- [Family](https://docs.developer.singpass.gov.sg/docs/data-catalog-myinfo/catalog/family.md)
- [Vehicle and Driving Licence](https://docs.developer.singpass.gov.sg/docs/data-catalog-myinfo/catalog/vehicle-and-driving-licence.md)
- [HDB Property](https://docs.developer.singpass.gov.sg/docs/data-catalog-myinfo/catalog/property.md)
- [Government Scheme](https://docs.developer.singpass.gov.sg/docs/data-catalog-myinfo/catalog/government-scheme.md)
- [Data for Government Agencies](https://docs.developer.singpass.gov.sg/docs/data-catalog-myinfo/catalog/government-only-data.md)
- [Overview](https://docs.developer.singpass.gov.sg/docs/singpass-developer-portal-sdp/user-guide.md): Guide to Navigating the Singpass Developer Portal (SDP)
- [Getting Access](https://docs.developer.singpass.gov.sg/docs/singpass-developer-portal-sdp/getting-access.md)
- [Obtaining Access to the Singpass Developer Portal (SDP)](https://docs.developer.singpass.gov.sg/docs/singpass-developer-portal-sdp/getting-access/obtaining-access-to-the-singpass-developer-portal-sdp.md): This page offers a guide to obtain access and login to SDP
- [Logging in to the Singpass Developer Portal (SDP)](https://docs.developer.singpass.gov.sg/docs/singpass-developer-portal-sdp/getting-access/logging-in-to-the-singpass-developer-portal-sdp.md)
- [Toggling Between Staging and Production](https://docs.developer.singpass.gov.sg/docs/singpass-developer-portal-sdp/getting-access/toggling-between-staging-and-production.md)
- [Service Agreement](https://docs.developer.singpass.gov.sg/docs/singpass-developer-portal-sdp/service-agreement.md)
- [View Singpass Service Agreement](https://docs.developer.singpass.gov.sg/docs/singpass-developer-portal-sdp/service-agreement/view-singpass-service-agreement.md)
- [Consent to Singpass Service Agreement](https://docs.developer.singpass.gov.sg/docs/singpass-developer-portal-sdp/service-agreement/consent-to-singpass-service-agreement.md): This applies to private-sector partners who do not have an existing Singpass Services Agreement.
- [App Management](https://docs.developer.singpass.gov.sg/docs/singpass-developer-portal-sdp/app-management.md)
- [Create Staging App](https://docs.developer.singpass.gov.sg/docs/singpass-developer-portal-sdp/app-management/create-staging-app.md)
- [Edit Staging App](https://docs.developer.singpass.gov.sg/docs/singpass-developer-portal-sdp/app-management/edit-staging-app.md)
- [Create Staging Test Account](https://docs.developer.singpass.gov.sg/docs/singpass-developer-portal-sdp/app-management/create-staging-test-account.md)
- [Create Production App](https://docs.developer.singpass.gov.sg/docs/singpass-developer-portal-sdp/app-management/create-production-app.md)
- [Edit Production App](https://docs.developer.singpass.gov.sg/docs/singpass-developer-portal-sdp/app-management/edit-production-app.md)
- [Deactivate Production App](https://docs.developer.singpass.gov.sg/docs/singpass-developer-portal-sdp/app-management/deactivate-production-app.md)
- [Activate Production App](https://docs.developer.singpass.gov.sg/docs/singpass-developer-portal-sdp/app-management/activate-production-app.md)
- [Duplicate an app](https://docs.developer.singpass.gov.sg/docs/singpass-developer-portal-sdp/app-management/duplicate-an-app.md)
- [Managing Drafts](https://docs.developer.singpass.gov.sg/docs/singpass-developer-portal-sdp/app-management/managing-drafts.md)
- [Understanding the App Config Fields](https://docs.developer.singpass.gov.sg/docs/singpass-developer-portal-sdp/understanding-the-app-config-fields.md)
- [App name & purpose](https://docs.developer.singpass.gov.sg/docs/singpass-developer-portal-sdp/understanding-the-app-config-fields/app-name.md)
- [App Use Case Description](https://docs.developer.singpass.gov.sg/docs/singpass-developer-portal-sdp/understanding-the-app-config-fields/app-description.md)
- [Industry & App category](https://docs.developer.singpass.gov.sg/docs/singpass-developer-portal-sdp/understanding-the-app-config-fields/industry-and-app-category.md)
- [Contact Emails](https://docs.developer.singpass.gov.sg/docs/singpass-developer-portal-sdp/understanding-the-app-config-fields/support-emails.md)
- [Site URL](https://docs.developer.singpass.gov.sg/docs/singpass-developer-portal-sdp/understanding-the-app-config-fields/site-url.md)
- [Redirect URL](https://docs.developer.singpass.gov.sg/docs/singpass-developer-portal-sdp/understanding-the-app-config-fields/redirect-url.md)
- [Token-based Authentication](https://docs.developer.singpass.gov.sg/docs/singpass-developer-portal-sdp/understanding-the-app-config-fields/token-based-authentication.md)
- [Allowed Scopes](https://docs.developer.singpass.gov.sg/docs/singpass-developer-portal-sdp/understanding-the-app-config-fields/allowed-scopes.md)
- [Billing & Finance](https://docs.developer.singpass.gov.sg/docs/singpass-developer-portal-sdp/billing-and-finance.md)
- [Updating Billing Contact Information](https://docs.developer.singpass.gov.sg/docs/singpass-developer-portal-sdp/billing-and-finance/updating-billing-contact-information.md)
- [How to View Production App Transactions](https://docs.developer.singpass.gov.sg/docs/singpass-developer-portal-sdp/billing-and-finance/how-to-view-production-app-transactions.md)
- [How to View Entity Transactions](https://docs.developer.singpass.gov.sg/docs/singpass-developer-portal-sdp/billing-and-finance/how-to-view-entity-transactions.md): The Entity Analytics page provides a breakdown of transactions across individual apps and shows how these contribute to the entity's overall transaction count.
- [How to View or Download Your Invoice](https://docs.developer.singpass.gov.sg/docs/singpass-developer-portal-sdp/billing-and-finance/how-to-view-or-download-your-invoice.md)
- [Testing with Singpass App](https://docs.developer.singpass.gov.sg/docs/testing/testing-with-singpass-app.md)
- [Myinfo Test Personas](https://docs.developer.singpass.gov.sg/docs/testing/myinfo-test-personas.md)
- [Documentation Changelog](https://docs.developer.singpass.gov.sg/docs/more-information/documentation-changelog.md)
- [Contact](https://docs.developer.singpass.gov.sg/docs/more-information/contact.md)

* [Overview of Sign](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/sign-with-singpass/start-here/readme.md)
* [How do our Digital Signatures work?](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/sign-with-singpass/start-here/how-do-our-digital-signatures-work.md)
* [Frequently Asked Questions](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/sign-with-singpass/start-here/frequently-asked-questions.md)
* [How to sign](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/sign-with-singpass/for-users/how-to-sign.md)
* [Verifying Sign with Singpass Signatures](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/sign-with-singpass/for-users/verifying-sign-with-singpass-signatures.md)
* [Loading Singpass Root Signing Certificate](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/sign-with-singpass/for-users/verifying-sign-with-singpass-signatures/loading-singpass-root-signing-certificate.md)
* [Use Cases](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/sign-with-singpass/for-relying-parties/use-cases.md)
* [How our API works](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/sign-with-singpass/for-relying-parties/how-our-api-works.md)
* [Singpass Services Agreement](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/sign-with-singpass/for-relying-parties/how-our-api-works/singpass-services-agreement.md)
* [How to Onboard our API](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/sign-with-singpass/for-relying-parties/onboard.md): This information is for onboarding onto Sign V3. Do note that we are no longer supporting new requests to onboard onto Sign V1.
* [API Documentation](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/sign-with-singpass/for-relying-parties/api-documentation.md)
* [Sign V3](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/sign-with-singpass/for-relying-parties/api-documentation/sign-v3.md)
* [Initiate Sign Request](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/sign-with-singpass/for-relying-parties/api-documentation/sign-v3/initiate-sign-request.md)
* [Redirect From Sign with Singpass](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/sign-with-singpass/for-relying-parties/api-documentation/sign-v3/redirect-from-sign-with-singpass.md)
* [Accept Success Signing Webhook](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/sign-with-singpass/for-relying-parties/api-documentation/sign-v3/accept-success-signing-webhook.md)
* [Get Signing Result](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/sign-with-singpass/for-relying-parties/api-documentation/sign-v3/get-signing-result.md)
* [JWKS Specification](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/sign-with-singpass/for-relying-parties/api-documentation/sign-v3/jwks-specification.md)
* [Sign Portal User Journey](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/sign-with-singpass/for-relying-parties/api-documentation/sign-v3/sign-portal.md)
* [Step-by-step User Journey](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/sign-with-singpass/for-relying-parties/api-documentation/sign-v3/sign-portal/sign-portal.md)
* [Cancel Sign Request](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/sign-with-singpass/for-relying-parties/api-documentation/sign-v3/cancel-sign-request.md)
* [Sign V1](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/sign-with-singpass/for-relying-parties/api-documentation/document-signing-v1.md): Last Updated: 2 June 2025
* [User Journey (V1)](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/sign-with-singpass/for-relying-parties/api-documentation/document-signing-v1/sign-docs.md)
* [Transaction Signing](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/sign-with-singpass/for-relying-parties/api-documentation/transaction-signing.md)
* [Embedding Singpass JS](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/sign-with-singpass/for-relying-parties/api-documentation/transaction-signing/embedding-singpass-js.md)
* [Init Transaction Signing](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/sign-with-singpass/for-relying-parties/api-documentation/transaction-signing/init-transaction-signing.md)
* [Exchange Transaction Signature](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/sign-with-singpass/for-relying-parties/api-documentation/transaction-signing/exchange-transaction-signature.md)
* [UX Guidelines](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/sign-with-singpass/for-relying-parties/ux-guidelines.md): This section contains important UX guidelines to ensure signers are well-guided through their signing journey.
* [User Journey Illustration](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/sign-with-singpass/for-relying-parties/ux-guidelines/user-journey-illustration.md)
* [Digital Signing Partners](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/sign-with-singpass/for-relying-parties/digital-signing-partners.md)
* [Docusign](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/sign-with-singpass/for-relying-parties/digital-signing-partners/docusign.md)
* [Tungsten Automation](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/sign-with-singpass/for-relying-parties/digital-signing-partners/tungsten-automation.md)
* [OneSpan](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/sign-with-singpass/for-relying-parties/digital-signing-partners/onespan.md)
* [Tessaract Technologies Pte Ltd](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/sign-with-singpass/for-relying-parties/digital-signing-partners/tessaract-technologies-pte-ltd.md)
* [Netrust Pte Ltd](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/sign-with-singpass/for-relying-parties/digital-signing-partners/netrust-pte-ltd.md)
* [Modus Consulting](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/sign-with-singpass/for-relying-parties/digital-signing-partners/modus-consulting.md)
* [Redoc.co by Real Estate Doc Pte Ltd.](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/sign-with-singpass/for-relying-parties/digital-signing-partners/redoc.co-by-real-estate-doc-pte-ltd..md)
* [CrimsonLogic](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/sign-with-singpass/for-relying-parties/digital-signing-partners/crimsonlogic.md)
* [Zoho Sign](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/sign-with-singpass/for-relying-parties/digital-signing-partners/zoho-sign.md)
* [Securemetric Technology Pte. Ltd.](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/sign-with-singpass/for-relying-parties/digital-signing-partners/securemetric-technology-pte.-ltd..md)
* [Rently Pte. Ltd.](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/sign-with-singpass/for-relying-parties/digital-signing-partners/rently-pte.-ltd..md)
* [Support](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/sign-with-singpass/for-relying-parties/support.md)
* [Guiding Principles](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/sign-with-singpass/for-relying-parties/guiding-principles.md)

- [Quick Start](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/client-initiated-backchannel-authentication-ciba/quick-start.md)
- [Step-up Authentication using Push Notifications](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/client-initiated-backchannel-authentication-ciba/step-up-authentication-using-push-notifications.md): Client-Initiated Backchannel Authentication (CIBA)
- [Backchannel Authentication Endpoint](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/client-initiated-backchannel-authentication-ciba/step-up-authentication-using-push-notifications/backchannel-authentication-endpoint.md)
- [Token Endpoint](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/client-initiated-backchannel-authentication-ciba/step-up-authentication-using-push-notifications/token-endpoint.md)
- [.well-known Endpoints](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/client-initiated-backchannel-authentication-ciba/step-up-authentication-using-push-notifications/.well-known-endpoints.md)
- [Staging and Production Endpoints](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/client-initiated-backchannel-authentication-ciba/staging-and-production-endpoints.md)
- [Error Response](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/client-initiated-backchannel-authentication-ciba/error-response.md)

* [Legacy Myinfo v3/v4](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-myinfo-v3-v4/legacy-myinfo-v3-v4.md)
* [Data Catalog](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-myinfo-v3-v4/data-catalog.md)
* [Key Principles](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-myinfo-v3-v4/key-principles.md)
* [Myinfo v4](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-myinfo-v3-v4/technical-specifications/myinfo-v4.md)
* [Difference between v3 and v4](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-myinfo-v3-v4/technical-specifications/myinfo-v4/difference-between-v3-and-v4.md)
* [Technical Guidelines](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-myinfo-v3-v4/technical-specifications/myinfo-v4/technical-guidelines.md)
* [Technical Concepts](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-myinfo-v3-v4/technical-specifications/myinfo-v4/technical-concepts.md)
* [OAuth 2.1 Concepts](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-myinfo-v3-v4/technical-specifications/myinfo-v4/technical-concepts/oauth-2.1-concepts.md)
* [Proof of Key Code Exchange (PKCE)](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-myinfo-v3-v4/technical-specifications/myinfo-v4/technical-concepts/proof-of-key-code-exchange-pkce.md)
* [JSON Web Token (JWT)](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-myinfo-v3-v4/technical-specifications/myinfo-v4/technical-concepts/json-web-token-jwt.md)
* [Client Assertions](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-myinfo-v3-v4/technical-specifications/myinfo-v4/technical-concepts/client-assertions.md)
* [JSON Web Key Store (JWKS)](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-myinfo-v3-v4/technical-specifications/myinfo-v4/technical-concepts/json-web-key-store-jwks.md)
* [Demonstration of Proof-of-Possession (DPoP)](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-myinfo-v3-v4/technical-specifications/myinfo-v4/technical-concepts/demonstration-of-proof-of-possession-dpop.md)
* [API Specifications](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-myinfo-v3-v4/technical-specifications/myinfo-v4/api-specifications.md)
* [Tutorials](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-myinfo-v3-v4/technical-specifications/myinfo-v4/tutorials.md)
* [Tutorial 1: Myinfo Person sample Data](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-myinfo-v3-v4/technical-specifications/myinfo-v4/tutorials/tutorial-1-myinfo-person-sample-data.md)
* [Tutorial 2: End-to-end Integration with Myinfo v4 APIs](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-myinfo-v3-v4/technical-specifications/myinfo-v4/tutorials/tutorial-2-end-to-end-integration-with-myinfo-v4-apis.md)
* [Resources](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-myinfo-v3-v4/technical-specifications/myinfo-v4/resources.md)
* [Myinfo Connectors](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-myinfo-v3-v4/technical-specifications/myinfo-v4/resources/myinfo-connectors.md)
* [Error Codes](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-myinfo-v3-v4/technical-specifications/myinfo-v4/resources/error-codes.md)
* [FAQ](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-myinfo-v3-v4/technical-specifications/myinfo-v4/faq.md)
* [Myinfo v3](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-myinfo-v3-v4/technical-specifications/myinfo-v3.md)
* [Technical Guidelines](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-myinfo-v3-v4/technical-specifications/myinfo-v3/technical-guidelines.md)
* [API Specifications](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-myinfo-v3-v4/technical-specifications/myinfo-v3/api-specifications.md)
* [Latest X.509 Public Key Certificate](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-myinfo-v3-v4/technical-specifications/myinfo-v3/latest-x.509-public-key-certificate.md)
* [Tutorials](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-myinfo-v3-v4/technical-specifications/myinfo-v3/tutorials.md)
* [Tutorial 1: Basic Person API](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-myinfo-v3-v4/technical-specifications/myinfo-v3/tutorials/tutorial-1-basic-person-api.md)
* [Tutorial 2: Using OAuth2](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-myinfo-v3-v4/technical-specifications/myinfo-v3/tutorials/tutorial-2-using-oauth2.md)
* [Tutorial 3: Implementing PKI Digital Signature](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-myinfo-v3-v4/technical-specifications/myinfo-v3/tutorials/tutorial-3-implementing-pki-digital-signature.md)
* [Resources](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-myinfo-v3-v4/technical-specifications/myinfo-v3/resources.md)
* [Myinfo Connectors](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-myinfo-v3-v4/technical-specifications/myinfo-v3/resources/myinfo-connectors.md)
* [Error Codes](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-myinfo-v3-v4/technical-specifications/myinfo-v3/resources/error-codes.md)
* [FAQ](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-myinfo-v3-v4/technical-specifications/myinfo-v3/faq.md)

- [Overview](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-verify/introduction/overview.md)
- [Key Principles](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-verify/key-principles.md)
- [Verify  API Data Catalog](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-verify/verify-api-data-catalog.md)
- [Brand Guidelines and Resources](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-verify/brand-guidelines-and-resources.md)
- [FAQ](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-verify/faq.md)
- [Verify API](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-verify/technical-specifications/verify-api.md)
- [Technical Requirements](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-verify/technical-specifications/technical-requirements.md)
- [Testing with Test Personas](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-verify/testing-with-test-personas.md)
- [Error Code](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-verify/error-code.md)
- [Verify QR Code](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-verify/tutorial/verify-qr-code.md)
- [Tutorial 1: Sample Application](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-verify/tutorial/tutorial-1-sample-application.md)
- [Tutorial 2: PKI Digital Signature](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-verify/tutorial/tutorial-2-pki-digital-signature.md)

* [Technical Concepts](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-pre-fapi-2.0-api-specifications/technical-specifications/technical-concepts.md)
* [JSON Web Key Sets (JWKS)](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-pre-fapi-2.0-api-specifications/technical-specifications/technical-concepts/json-web-key-sets-jwks.md)
* [Generation Of Client Assertion](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-pre-fapi-2.0-api-specifications/technical-specifications/technical-concepts/generation-of-client-assertion.md)
* [Proof Key for Code Exchange (PKCE)](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-pre-fapi-2.0-api-specifications/technical-specifications/technical-concepts/proof-key-for-code-exchange-pkce.md)
* [(Legacy) Pre-FAPI 2.0 Singpass API Specifications](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-pre-fapi-2.0-api-specifications/technical-specifications/singpass-authentication-api.md)
* [Overview of Singpass Flow](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-pre-fapi-2.0-api-specifications/technical-specifications/singpass-authentication-api/overview-of-singpass-flow.md)
* [1. Authorization Endpoint](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-pre-fapi-2.0-api-specifications/technical-specifications/singpass-authentication-api/1.-authorization-endpoint.md)
* [Redirection on success](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-pre-fapi-2.0-api-specifications/technical-specifications/singpass-authentication-api/1.-authorization-endpoint/redirection-on-success.md)
* [For Mobile Developers](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-pre-fapi-2.0-api-specifications/technical-specifications/singpass-authentication-api/1.-authorization-endpoint/for-mobile-developers.md)
* [2. Token Endpoint](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-pre-fapi-2.0-api-specifications/technical-specifications/singpass-authentication-api/2.-token-endpoint.md)
* [Authorization Code Grant](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-pre-fapi-2.0-api-specifications/technical-specifications/singpass-authentication-api/2.-token-endpoint/authorization-code-grant.md)
* [Client JWK Requirements](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-pre-fapi-2.0-api-specifications/technical-specifications/singpass-authentication-api/2.-token-endpoint/client-jwk-requirements.md)
* [3. Userinfo Endpoint](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-pre-fapi-2.0-api-specifications/technical-specifications/singpass-authentication-api/3.-userinfo-endpoint.md)
* [Requesting Userinfo](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-pre-fapi-2.0-api-specifications/technical-specifications/singpass-authentication-api/3.-userinfo-endpoint/requesting-userinfo.md)
* [Validating the payload](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-pre-fapi-2.0-api-specifications/technical-specifications/singpass-authentication-api/3.-userinfo-endpoint/validating-the-payload.md)
* [.well-known Endpoints](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-pre-fapi-2.0-api-specifications/technical-specifications/singpass-authentication-api/.well-known-endpoints.md)
* [OpenID Discovery Endpoint](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-pre-fapi-2.0-api-specifications/technical-specifications/singpass-authentication-api/.well-known-endpoints/openid-discovery-endpoint.md)
* [JWKS Endpoint](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-pre-fapi-2.0-api-specifications/technical-specifications/singpass-authentication-api/.well-known-endpoints/jwks-endpoint.md)
* [Error Response](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-pre-fapi-2.0-api-specifications/technical-specifications/singpass-authentication-api/error-response.md)
* [Contact](https://docs.developer.singpass.gov.sg/docs/singpass-developer-docs/legacy-pre-fapi-2.0-api-specifications/more-information/contact.md)


---

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Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters:

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