HMM
HMM Co., Ltd. is a South Korean shipping and logistics company headquartered at the Hyundai Group Building in Seoul. Its services include container shipping (general, reefer, oversized and dangerous cargo), bulk shipping (tankers, gas tankers, pure car and truck carriers, heavy lift and project cargo), terminals and intermodal transport. HMM says it launched four API services in 2022 and is adding more, from booking through to payment, that follow the Digital Container Shipping Association (DCSA) standards. The APIs are offered through the HMM Open API Developer Portal (apiportal.hmm21.com), where companies sign up and wait for approval before using them. The gallery lists APIs such as DCSA Arrival Notice, DCSA Booking and e-BL Company ID receipt.
HMM publishes 6 API contracts indexed on the APIs.io network, including Arrival Notice API, Bookings API, Eblcompany Id Requests API, and 3 more. Tagged areas include Company, Shipping, Logistics, Container Shipping, and Maritime.
The HMM catalog on APIs.io includes 1 Spectral governance ruleset.
HMM’s developer surface includes sandbox, authentication, documentation, API reference, getting-started guide, signup flow, support, and 20 more developer resources.
Kin Score
Kin Score
How this is scored →scored 2026-10-31 · rubric v0.25.0
It updates itself when the score changes. Paste this where you link to your API docs:
<a href="https://apis.io/providers/hmm21/"><img src="https://apis.io/badge/hmm21/card.svg" alt="HMM on APIs.io — Kin Score by API Evangelist"></a>Other styles, a README pill and a shields.io endpoint are on the badge page.
- MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
- Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
- A2A Agent Card +8 pts — a2a/
-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0 - Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)
- Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented)
- Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document
- Access Clarity scores 23.7 — up to +15.3 composite points
- Contract Quality scores 40.5 — up to +14.9 composite points
- Operational Transparency scores 0.0 — up to +13.0 composite points
APIs 6
Individual APIs this provider publishes, each with its own machine-readable definition.
HMM Arrival Notice API
The Arrival Notice API from HMM — 1 operation(s) for arrival notice.
HMM Bookings API
The Bookings API from HMM — 2 operation(s) for bookings.
HMM Eblcompany Id Requests API
The Eblcompany Id Requests API from HMM — 1 operation(s) for eblcompany id requests.
HMM KR NEXAWAVE CERT FILE API
The KR NEXAWAVE CERT FILE API from HMM — 1 operation(s) for kr nexawave cert file.
HMM KR NEXAWAVE CLASS SURVEY API
The KR NEXAWAVE CLASS SURVEY API from HMM — 1 operation(s) for kr nexawave class survey.
HMM KR NEXAWAVE CMS PMS API
The KR NEXAWAVE CMS PMS API from HMM — 1 operation(s) for kr nexawave cms pms.
Agent Skills 1
Packaged agent skills for driving this provider's APIs from an AI assistant.
hmm21-manage-booking
AGENT SKILLSpectral Rules 1
Spectral governance rulesets for linting and validating these APIs.
HMM API Rules
SPECTRALOpenAPI Overlays 6
Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.
Hmm21 Arrival Notice Overlay
GENERATEDHmm21 Booking Overlay
GENERATEDHmm21 Certificate File Overlay
GENERATEDHmm21 Class Survey Status Overlay
GENERATEDHmm21 Cms Pms Status Overlay
GENERATEDHmm21 Ebl Company Id Overlay
GENERATEDSecurity Posture 2
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Agentic Access 1
Recommended x-agentic-access execution contracts for AI agents.
Resources
Get Started 5
Portal, sign-up, and the first successful call
Documentation 2
Reference material describing how the API behaves
Agent Surfaces 3
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 4
Pagination, idempotency, versioning, errors, and events
Access & Security 2
Authentication, authorization, and security posture
Learn 1
Tutorials, courses, talks, and written guidance
Operate 1
Status, limits, changes, and where to get help
Commercial 1
Pricing, plans, and the legal terms of use
Company 5
The organization behind the API
Other 3
Properties that don't map to a standard resource type
Source (apis.yml)
HMM API — frequently asked questions
Does HMM have an API?
Yes. APIs.io lists 6 APIs from HMM, including HMM Arrival Notice API, HMM Bookings API and HMM Eblcompany Id Requests API, and 3 more.
Is there an OpenAPI specification for the HMM API?
Yes. APIs.io indexes 6 OpenAPI specifications for HMM, each linked for download from this page.
How do I authenticate with the HMM API?
HMM documents its authentication (apiKey · 1 scheme). The details are profiled on APIs.io as Hmm21 Authentication.
Is the HMM API ready for AI agents?
HMM has a Kin Score of 37.9 out of 100 (thin) and an Agent Readiness score of 26.9 (agent-aware), scored by API Evangelist on 2026-10-31.
Work with this as data
Every provider here is available over the APIs.io API and to AI agents over MCP.