dulieu-dev

DuLieu.dev provides a Vietnamese economic data dashboard offering exchange rates, gold, silver, weather, fuel, coffee, pepper, groceries, drugs, electronics and more. It aggregates public economic indicators and market prices, presenting them via a web interface and API for developers to integrate Vietnamese market data into applications.

dulieu-dev is listed with 2 APIs on the APIs.io network. Tagged areas include Company, Data, Vietnam, Economic, and API.

The dulieu-dev catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

dulieu-dev’s developer surface includes engineering blog, documentation, API reference, and 12 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

25.2/100 emerging Agent 13/100 agent aware Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

2 APIs

Company Data VietnamEconomicAPI

Kin Score

Kin Score How this is scored →
scored 2026-10-31 · rubric v0.25.0

Composite quality — 25.2/100 · emerging

Contract Quality 5.4 / 21

Developer Ergonomics 3.2 / 17

Access Clarity 3.6 / 17

Operational Transparency 1.7 / 11

Contract Governance 2.2 / 10

Discoverability 4.9 / 9

Regulatory Posture 2.8 / 15

Agent readiness — 13/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 0 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
Machine-Readable Auth +10 pts — a served openid-configuration/oauth-authorization-server carrying `issuer` (served), else the securitySchemes class in the provider OpenAPIs — bound (mutualTLS, DPoP, Signature) > negotiable (oauth2 authorizationCode/clientCredentials, openIdConnect) > bearer (http bearer, apiKey)
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
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes

12 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Contract Quality scores 25.2 — up to +18.7 composite points
Developer Ergonomics scores 19.0 — up to +16.2 composite points
Access Clarity scores 21.1 — up to +15.8 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from the provider profile at artifacts.apis.io/dulieu-dev/apis.yml: open an issue on github.com/api-evangelist/dulieu-dev to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 2

Individual APIs this provider publishes, each with its own machine-readable definition.

DuLieu API

REST API providing Vietnamese economic data such as exchange rates, commodities, and market prices.

dulieu-dev API

dulieu-dev API as documented publicly: 79 operations. Contract generated from the documentation by API Evangelist (2026-10-29); not the provider's own document.

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Dulieu Dev Context

77 classes · 96 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

dulieu-dev API Rules

11 rules · 8 errors 2 warnings 1 info

SPECTRAL

JSON Schema 6

Standalone JSON Schema definitions for this provider's data models.

GetApiCosmeticsCompareResponse

10 properties

JSON SCHEMA

GetApiCosmeticsSummaryResponse

7 properties

JSON SCHEMA

GetApiElectronicsSummaryResponse

7 properties

JSON SCHEMA

GetApiRealestateByIdSourceidResponse

11 properties

JSON SCHEMA

GetApiRealestateFacetsResponse

6 properties

JSON SCHEMA

GetApiRealestateSuggestResponse

7 properties

JSON SCHEMA

Security Posture 1

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Dulieu Dev Domain Security

TLSv1.3

SECURITY

Resources

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

Conformance

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

StatusPage

StatusPage

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Blog

Blog

Website

Website

Other 1

Properties that don't map to a standard resource type

Hosts

Hosts

Source (apis.yml)

aid: dulieu-dev
name: dulieu-dev
image: https://dulieu.dev/public/og-image.svg
description: DuLieu.dev provides a Vietnamese economic data dashboard offering exchange rates, gold, silver, weather, fuel,
  coffee, pepper, groceries, drugs, electronics and more. It aggregates public economic indicators and market prices, presenting
  them via a web interface and API for developers to integrate Vietnamese market data into applications.
url: https://artifacts.apis.io/dulieu-dev/apis.yml
x-type: company
x-source: harvest:mcp-registry
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-29 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-29'
modified: '2026-10-29'
tags:
- Company
- Data
- Vietnam
- Economic
- API
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Spectral
  url: rules/dulieu-dev-rules.yml
- type: JSONLD
  url: json-ld/dulieu-dev-context.jsonld
- type: Vocabulary
  url: vocabulary/dulieu-dev-vocabulary.yml
- type: DataModel
  url: data-model/dulieu-dev-data-model.yml
- type: Conformance
  url: conformance/dulieu-dev-conformance.yml
- type: LLMsTxt
  url: llms/dulieu-dev-llms.txt
- type: Hosts
  url: hosts/dulieu-dev-hosts.yml
- type: TermsOfService
  url: https://dulieu.dev/page/terms-of-service
- type: StatusPage
  url: https://dulieu.dev/status
- type: PrivacyPolicy
  url: https://dulieu.dev/page/privacy-policy
- type: Blog
  url: https://dulieu.dev/blog
- type: DomainSecurity
  url: security/dulieu-dev-domain-security.yml
- type: Website
  url: https://dulieu.dev/
- type: Documentation
  url: https://dulieu.dev/api/docs
- type: APIReference
  url: https://dulieu.dev/api/docs
apis:
- name: DuLieu API
  description: REST API providing Vietnamese economic data such as exchange rates, commodities, and market prices.
  humanURL: https://dulieu.dev/api/docs
  baseURL: null
  aid: dulieu-dev:dulieu-api
- aid: dulieu-dev:dulieu-dev-api
  name: dulieu-dev API
  description: 'dulieu-dev API as documented publicly: 79 operations. Contract generated from the documentation by API Evangelist
    (2026-10-29);

    not the provider''s own document.'
  humanURL: https://dulieu.dev/api/docs
  properties:
  - type: OpenAPI
    url: openapi/_ae-authored/dulieu-dev-openapi-generated.yml
    x-provenance: generated
  - type: JSONSchema
    url: json-schema/dulieu-dev-get-api-realestate-by-id-sourceid-response-schema.json
  - type: JSONSchema
    url: json-schema/dulieu-dev-get-api-cosmetics-compare-response-schema.json
  - type: JSONSchema
    url: json-schema/dulieu-dev-get-api-realestate-facets-response-schema.json
  - type: JSONSchema
    url: json-schema/dulieu-dev-get-api-cosmetics-summary-response-schema.json
  - type: JSONSchema
    url: json-schema/dulieu-dev-get-api-realestate-suggest-response-schema.json
  - type: JSONSchema
    url: json-schema/dulieu-dev-get-api-electronics-summary-response-schema.json
x-coverage:
  state: unreadable
  reason: js-rendered-docs
  detail: API documentation page renders a large HTML shell requiring JavaScript to view specifications.
  evidence:
  - url: https://dulieu.dev/api/docs
    status: 200
  checked: '2026-10-29'
x-enrichment:
  date: '2026-10-29'
  status: enriched
  artifacts_added: 22
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

dulieu-dev API — frequently asked questions

Does dulieu-dev have an API?

Yes. APIs.io lists 2 APIs from dulieu-dev, including DuLieu API and dulieu-dev API.

Is there an OpenAPI specification for the dulieu-dev API?

Yes. APIs.io indexes 1 OpenAPI specification for dulieu-dev, each linked for download from this page.

Is the dulieu-dev API ready for AI agents?

dulieu-dev has a Kin Score of 25.2 out of 100 (emerging) and an Agent Readiness score of 12.9 (agent-aware), scored by API Evangelist on 2026-10-31.

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