NewMarket

NewMarket Corporation (NYSE: NEU) is a publicly traded specialty chemicals holding company headquartered in Richmond, Virginia. Through subsidiaries Afton Chemical and Ethyl Corporation, NewMarket develops petroleum additives for fuels and lubricants used worldwide.

NewMarket is profiled on the APIs.io network. Tagged areas include Specialty Chemicals, Petroleum Additives, Publicly Traded, and Fortune 1000.

NewMarket’s developer surface includes engineering blog and 5 more developer resources.

🌐 Visit website 📡 Source on GitHub

3.0/100 minimal ▬ flat Agent 0/100 human only Front door AI 1/6 silent Full breakdown ↓
scored 2026-09-25 · rubric v0.23.0

0 APIs

Specialty ChemicalsPetroleum AdditivesPublicly Traded Fortune 1000

Kin Score

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

Composite quality — 3.0/100 · minimal

Contract Quality 0.0 / 21

Developer Ergonomics 0.4 / 17

Access Clarity 0.0 / 17

Operational Transparency 0.0 / 11

Contract Governance 0.0 / 10

Discoverability 3.3 / 9

Regulatory Posture 0.9 / 15

Agent readiness — 0/100 · human only

Machine-Readable Contract 0 / 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

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/newmarket: 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 →

Security Posture 1

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

Newmarket Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Press 8

Recent news and press coverage referencing this provider.

NewMarket Corporation Increases Quarterly Dividend

NewMarket Corporation Completes the Acquisition of Calca Solutions, LLC

Newmarket-Aurora MPP's motion passes for 'responsible ...

NewMarket Corporation Reports First Quarter 2026 Results

NewMarket Corporation Schedules Conference Call and Webcast to Review Third Quarter 202...

NewMarket Corporation Schedules Conference Call and Webcast to Review Fourth Quarter an...

NewMarket Corporation Announces Quarterly Dividend

NewMarket Corporation Reports Fourth Quarter and Full Year 2025 Results

Scroll for all 8

Resources

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Company 5

The organization behind the API

LinkedIn

Website

Website

About

About

Investor Relations

Investor Relations

Blog

Blog

Source (apis.yml)

aid: newmarket
name: NewMarket
description: 'NewMarket Corporation (NYSE: NEU) is a publicly traded specialty chemicals holding company headquartered in
  Richmond, Virginia. Through subsidiaries Afton Chemical and Ethyl Corporation, NewMarket develops petroleum additives for
  fuels and lubricants used worldwide.'
type: Index
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: false
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - none
  generated: '2026-08-28'
  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/newmarket.png
tags:
- Specialty Chemicals
- Petroleum Additives
- Publicly Traded
- Fortune 1000
url: https://raw.githubusercontent.com/api-evangelist/newmarket/refs/heads/main/apis.yml
created: '2026-04-28'
modified: '2026-04-28'
specificationVersion: '0.23'
apis: []
common:
- type: DomainSecurity
  url: security/newmarket-domain-security.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/newmarket-corporation
- type: Website
  url: https://www.newmarket.com
- type: About
  url: https://www.newmarket.com/about
- type: Investor Relations
  url: https://www.newmarket.com/investors
- url: https://www.newmarket.com/news/feed/
  type: Blog
maintainers:
- FN: API Evangelist
  email: info@apievangelist.com
x-legal-name: NewMarket Corporation

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