Nasdaq

Fortune 1000 company Nasdaq. Public real-time delivery is Apache Kafka via Nasdaq Cloud Data Service (NCDS); modeled here in AsyncAPI 2.6 with kafka bindings.

Nasdaq publishes 1 API on the APIs.io network: Cloud Data Service (NCDS) — Kafka Streams. Tagged areas include Fortune 1000 and Real-Time.

The Nasdaq catalog on APIs.io includes 1 event-driven AsyncAPI specification and 1 Spectral governance ruleset.

🌐 Visit website 📡 Source on GitHub

18.0/100 emerging ▬ flat Agent 14/100 agent aware library Full breakdown ↓
scored 2026-09-25 · rubric v0.23.0

1 APIs

Fortune 1000 Real-Time

Kin Score

Kin Score How this is scored →
scored 2026-09-25 · rubric v0.23.0

Composite quality — 18.0/100 · emerging

Contract Quality 10.0 / 21

Developer Ergonomics 1.2 / 17

Access Clarity 0.0 / 17

Operational Transparency 0.3 / 11

Contract Governance 1.4 / 10

Discoverability 3.6 / 9

Regulatory Posture 0.9 / 15

Agent readiness — 14/100 · 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 6 / 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

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/.

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 github.com/api-evangelist/nasdaq: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 1

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

Nasdaq Cloud Data Service (NCDS) — Kafka Streams

Real-time Nasdaq market data delivered over Apache Kafka (TLS) with SASL/OAUTHBEARER authentication against a Keycloak pro-realm token endpoint. Topics documented in the NCDS Ja...

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Nasdaq Cloud Data Service (NCDS) — Kafka Streams

AsyncAPI 2.6 description of the Nasdaq Cloud Data Service (NCDS) public delivery surface. NCDS delivers real-time exchange data over Apache Kafka (TLS) using SASL/OAUTHBEARER ag...

ASYNCAPI

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Nasdaq API Rules

6 rules · 1 errors 4 warnings 1 info

SPECTRAL

Security Posture 1

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

Nasdaq Domain Security

DMARC

SECURITY

Resources

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Company 2

The organization behind the API

Website

Website

LinkedIn

Source (apis.yml)

aid: nasdaq
tags:
- Fortune 1000
- Real-Time
url: https://raw.githubusercontent.com/api-evangelist/nasdaq/refs/heads/main/apis.yml
name: Nasdaq
type: Index
deliveryModel:
  model: library
  license_evidence:
    not_product:
    - nasdaq/nasdaqclouddataservice
  open_source: unknown
  commercial: false
  callable_host: false
  label: Library · distributed through package registries, no callable service
  confidence: low
  source:
  - repository-not-product
  generated: '2026-09-25'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/nasdaq.png
description: Fortune 1000 company Nasdaq. Public real-time delivery is Apache Kafka via Nasdaq Cloud Data Service (NCDS);
  modeled here in AsyncAPI 2.6 with kafka bindings.
created: '2026-05-05'
modified: '2026-09-16'
specificationVersion: '0.23'
common:
- type: Website
  url: https://nasdaq.com:9094
- type: DomainSecurity
  url: security/nasdaq-domain-security.yml
- type: GitHubOrganization
  url: https://github.com/Nasdaq
- type: LinkedIn
  url: https://www.linkedin.com/company/nasdaq
apis:
- name: Nasdaq Cloud Data Service (NCDS) — Kafka Streams
  description: 'Real-time Nasdaq market data delivered over Apache Kafka (TLS) with SASL/OAUTHBEARER authentication against
    a Keycloak pro-realm token endpoint. Topics documented in the NCDS Java and Python SDKs: GIDS, NLSUTP, NLSCTA, NLSPLUS-UTP-V4,
    NLSPLUS-CTA-V4, NEWS-PRO-GLOBAL, UTPBIN-UF30. The full topic catalog is product-license-gated and delivered to subscribers
    during onboarding.

    '
  humanURL: https://github.com/Nasdaq/NasdaqCloudDataService
  baseURL: https://streams.ncds.nasdaq.com:9094
  tags:
  - Market Data
  - Kafka
  - Streaming
  - Avro
  properties:
  - type: GitHub
    url: https://github.com/Nasdaq/NasdaqCloudDataService
  - type: SDKs
    url: https://github.com/Nasdaq/NasdaqCloudDataService-SDK-Java
  - type: SDKs
    url: https://github.com/Nasdaq/NasdaqCloudDataService-SDK-Python
  - type: AsyncAPI
    url: https://raw.githubusercontent.com/api-evangelist/nasdaq/refs/heads/main/asyncapi/nasdaq-asyncapi.yml

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