# d ACCOUNT Connect

**Canonical:** https://apis.io/apis/ntt-docomo/d-account-connect/  
**Provider:** NTT Docomo — https://apis.io/providers/ntt-docomo/  
**Base URL:** https://conf.uw.docomo.ne.jp/  
**Documentation:** https://id.smt.docomo.ne.jp/src/index_business.html

d ACCOUNT Connect is one of 2 APIs that [NTT Docomo](https://apis.io/providers/ntt-docomo/) publishes on the [APIs.io](https://apis.io/) network. Tagged areas include Identity, OpenID Connect, Authentication, Carrier Identity, and Partner Gated. The published artifact set on APIs.io includes API documentation, an API reference, a getting-started guide, authentication docs, and a support channel.

d ACCOUNT Connect (dアカウント・コネクト) is DOCOMO's carrier identity service for businesses, offering OpenID Connect based social login backed by network line authentication and device biometrics against roughly 90 million d ACCOUNT registrations and approximately 2,000 implemented sites. A live, anonymous OpenID Connect discovery document is served at https://conf.uw.docomo.ne.jp/.well-known/openid-configuration (HTTP 200, fetched 2026-07-25) declaring issuer https://conf.uw.docomo.ne.jp/, the authorization endpoint https://id.smt.docomo.ne.jp/cgi8/oidc/authorize, token and userinfo endpoints, pairwise subject identifiers, response_types of code only, and HS256/RS256 ID token signing. No backchannel authentication endpoint is advertised, so CIBA — the grant CAMARA specifies for network-based authorization — is not exposed here. The integration manual and technical specification are downloadable only after submitting a use application and passing DOCOMO's review; no OpenAPI definition is published.

## Machine-readable artifacts (12)

- **Documentation** — https://id.smt.docomo.ne.jp/src/index_business.html
- **APIReference** — https://id.smt.docomo.ne.jp/src/dlogin/ctop_method.html
- **GettingStarted** — https://id.smt.docomo.ne.jp/src/dlogin/ctop_method.html
- **OpenIDConnectDiscovery** — https://conf.uw.docomo.ne.jp/.well-known/openid-configuration
- **Authentication** — https://raw.githubusercontent.com/api-evangelist/ntt-docomo/refs/heads/main/authentication/ntt-docomo-authentication.yml
- **WellKnown** — https://raw.githubusercontent.com/api-evangelist/ntt-docomo/refs/heads/main/well-known/ntt-docomo-well-known.yml
- **JWKS** — https://raw.githubusercontent.com/api-evangelist/ntt-docomo/refs/heads/main/well-known/ntt-docomo-jwks.json
- **SignUp** — https://g.daccount.docomo.ne.jp/VIEW_OC01/login4
- **StatusPage** — https://id.smt.docomo.ne.jp/src/dac/maintenance-g.html
- **Support** — https://id.smt.docomo.ne.jp/src/dlogin/ctop_method_form.html
- **TermsOfService** — https://id.smt.docomo.ne.jp/src/utility/rules.html
- **APIsJSON** — https://raw.githubusercontent.com/api-evangelist/ntt-docomo/refs/heads/main/apis.yml

## Other NTT Docomo APIs (1)

- [docomo Mail IMAP Interface](https://apis.io/apis/ntt-docomo/docomo-mail-imap-interface/)

## Tags

Identity, OpenID Connect, Authentication, Carrier Identity, Partner Gated

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/ntt-docomo/d-account-connect/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/ntt-docomo/.