NTT Docomo
NTT DOCOMO, Inc. is Japan's largest mobile network operator and a wholly owned subsidiary of Nippon Telegraph and Telephone (NTT), serving roughly 90 million mobile subscriptions in its home market of Japan across the docomo, ahamo and irumo brands, alongside the d ACCOUNT identity, d POINT loyalty, d Payment wallet and Lemino media franchises. In the telecom value chain DOCOMO is a facilities-based incumbent carrier — it owns the 5G radio, core and subscriber identity — but it does not sell that capability to developers directly. Its API posture is partner-gated and sales-led: the first-party "docomo Developer support" programme launched in 2013 was shut down on 31 March 2021 and its host no longer resolves, no developer, developers, docs, api or opengateway subdomain exists on docomo.ne.jp, and the only surviving public developer page documents handset and content technical information rather than any HTTP API. DOCOMO's network APIs reach developers only through aggregation: the company participates in the GSMA Open Gateway initiative and signed a distribution partnership with Aduna, the Ericsson-and-carrier joint venture, on 29 January 2026 to expose CAMARA Number Verification and SIM Swap for international markets — a commitment announced in press releases, with nothing callable published first-party as of this profile. Enterprise and wholesale API traffic is redirected to sibling company NTT DOCOMO BUSINESS on a separate domain.
More than an index entry, but the surface is still mostly links rather than artifacts — the cohort most likely to move a full band from modest, well-targeted work.
API Evangelist profiles NTT Docomo the way a machine reads it — 4 machine-readable artifacts across 2 APIs, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — NTT Docomo scores 26.2/100 (emerging), with a separate agent-readiness read of 14/100 (human only). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
Kin Score
This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance.
Kin Score
How this is scored →scored 2026-07-27 · rubric v0.5
How we profile NTT Docomo
Each block below is one kind of artifact we hold for NTT Docomo. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.
APIs 2
Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.
Individual APIs this provider publishes, each with its own machine-readable definition.
d ACCOUNT Connect
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 ...
docomo Mail IMAP Interface
The docomo Mail IMAP interface is the one machine-interface specification NTT DOCOMO publishes openly, without registration, to third-party developers. It documents how a mail c...
Security Posture 2
Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Resources
Every other property we hold for NTT Docomo — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.
Get Started 1
Portal, sign-up, and the first successful call
Documentation 1
Reference material describing how the API behaves
Agent Surfaces 2
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 3
Pagination, idempotency, versioning, errors, and events
Build 2
SDKs, sample code, and the tooling you integrate with
Access & Security 2
Authentication, authorization, and security posture
Operate 4
Status, limits, changes, and where to get help
Commercial 3
Pricing, plans, and the legal terms of use
Company 4
The organization behind the API
Other 1
Properties that don't map to a standard resource type
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