Engine Yard

Engine Yard provides a managed Ruby on Rails hosting platform, offering a PaaS solution that simplifies deployment, scaling, and management of web applications. Founded in 2006, the company focuses on delivering reliable, secure, and performant infrastructure for developers, with features like automated backups, monitoring, and support for multiple environments. Engine Yard serves enterprises and startups seeking to accelerate their application delivery while reducing operational overhead.

Engine Yard is listed with 1 API on the APIs.io network. Tagged areas include Company, PaaS, Ruby, Rails, and CloudHosting.

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

Engine Yard’s developer surface includes support, documentation, engineering blog, pricing, and 19 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

40.5/100 developing Agent 13/100 agent aware Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

1 API

CompanyPaaSRubyRailsCloudHosting

Kin Score

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

Composite quality — 40.5/100 · developing

Contract Quality 5.6 / 21

Developer Ergonomics 4.0 / 17

Access Clarity 13.0 / 17

Operational Transparency 3.5 / 11

Contract Governance 2.2 / 10

Discoverability 5.6 / 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 26.3 — up to +18.4 composite points
Developer Ergonomics scores 23.8 — up to +15.2 composite points
Contract Governance scores 22.0 — up to +9.4 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/engine-yard/apis.yml: open an issue on github.com/api-evangelist/engine-yard 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 1

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

Engine Yard API

Engine Yard API as documented publicly: 45 operations. Contract generated from the documentation by API Evangelist (2026-10-26); not the provider's own document.

Pricing Plans 1

Published pricing tiers and plan structures.

Engine Yard Plans Pricing

3 plans

PLANS

Semantic Vocabularies 1

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

Engine Yard Context

53 classes · 63 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Engine Yard API Rules

11 rules · 8 errors 2 warnings 1 info

SPECTRAL

JSON Schema 6

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

GetAlertsAlertResponse

16 properties

JSON SCHEMA

GetNetworksNetworkResponse

8 properties

JSON SCHEMA

PostDatabaseServersDatabaseserveridAlertsRequest

5 properties

JSON SCHEMA

PostDatabaseServersDatabaseserveridAlertsResponse

16 properties

JSON SCHEMA

PostServersServeridAlertsResponse

16 properties

JSON SCHEMA

PutAlertsAlertidResponse

16 properties

JSON SCHEMA

Security Posture 1

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

Engine Yard Domain Security

TLSv1.3 · DMARC

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

Login

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

WellKnown

WellKnown

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

Conformance

Build 3

SDKs, sample code, and the tooling you integrate with

SDKs

SDKs

Packages

Packages

GitHubOrganization

GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

SecurityTxt

SecurityTxt

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

Support

Support

StatusPage

StatusPage

Commercial 4

Pricing, plans, and the legal terms of use

Plans

TermsOfService

PrivacyPolicy

Pricing

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: engine-yard
name: Engine Yard
image: https://www.engineyard.com/wp-content/uploads/2021/10/homepage.jpg
description: Engine Yard provides a managed Ruby on Rails hosting platform, offering a PaaS solution that simplifies deployment,
  scaling, and management of web applications. Founded in 2006, the company focuses on delivering reliable, secure, and performant
  infrastructure for developers, with features like automated backups, monitoring, and support for multiple environments.
  Engine Yard serves enterprises and startups seeking to accelerate their application delivery while reducing operational
  overhead.
url: https://raw.githubusercontent.com/api-evangelist/engine-yard/refs/heads/main/apis.yml
x-type: company
x-source: harvest:vc-portfolio
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-26 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-26'
modified: '2026-10-26'
tags:
- Company
- PaaS
- Ruby
- Rails
- CloudHosting
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Support
  url: https://support.engineyard.com
- type: Plans
  url: plans/engine-yard-plans-pricing.yml
- type: Spectral
  url: rules/engine-yard-rules.yml
- type: JSONLD
  url: json-ld/engine-yard-context.jsonld
- type: Vocabulary
  url: vocabulary/engine-yard-vocabulary.yml
- type: DataModel
  url: data-model/engine-yard-data-model.yml
- type: Conformance
  url: conformance/engine-yard-conformance.yml
- type: SecurityTxt
  url: well-known/engine-yard-status-security.txt
- type: WellKnown
  url: well-known/engine-yard-well-known.yml
- type: Hosts
  url: hosts/engine-yard-hosts.yml
- type: Vendors
  url: vendors/engine-yard-vendors.yml
- type: SDKs
  url: packages/engine-yard-packages.yml
- type: Packages
  url: packages/engine-yard-packages.yml
- type: TermsOfService
  url: https://www.engineyard.com/policies/terms-of-service/
- type: StatusPage
  url: https://status.engineyard.com/
- type: PrivacyPolicy
  url: https://www.engineyard.com/policies/privacy/
- type: Login
  url: https://login.engineyard.com/login
- type: Documentation
  url: https://developer.engineyard.com/
- type: GitHubOrganization
  url: https://github.com/engineyard
- type: DomainSecurity
  url: security/engine-yard-domain-security.yml
- type: Website
  url: https://www.engineyard.com
- type: Blog
  url: https://www.engineyard.com/blog/
- type: Pricing
  url: https://www.engineyard.com/pricing/
apis:
- aid: engine-yard:engine-yard-api
  name: Engine Yard API
  description: 'Engine Yard API as documented publicly: 45 operations. Contract generated from the documentation by API Evangelist
    (2026-10-26); not the provider''s own document.'
  humanURL: https://developer.engineyard.com
  baseURL: https://api.engineyard.com
  properties:
  - type: OpenAPI
    url: openapi/_ae-authored/engine-yard-openapi-generated.yml
    x-provenance: generated
  - type: JSONSchema
    url: json-schema/engine-yard-get-alerts-alert-response-schema.json
  - type: JSONSchema
    url: json-schema/engine-yard-post-database-servers-databaseserverid-alerts-response-schema.json
  - type: JSONSchema
    url: json-schema/engine-yard-post-servers-serverid-alerts-response-schema.json
  - type: JSONSchema
    url: json-schema/engine-yard-put-alerts-alertid-response-schema.json
  - type: JSONSchema
    url: json-schema/engine-yard-get-networks-network-response-schema.json
  - type: JSONSchema
    url: json-schema/engine-yard-post-database-servers-databaseserverid-alerts-request-schema.json
x-backed-by:
- nea
x-coverage:
  state: unreadable
  reason: js-rendered-docs
  detail: The developer pages return only HTML with no machine‑readable API specifications.
  evidence:
  - url: https://www.engineyard.com/developers
    status: 200
  checked: '2026-10-26'
x-enrichment:
  date: '2026-10-26'
  status: enriched
  artifacts_added: 23
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

Engine Yard API — frequently asked questions

Does Engine Yard have an API?

Yes. APIs.io lists 1 API from Engine Yard, including Engine Yard API.

Is there an OpenAPI specification for the Engine Yard API?

Yes. APIs.io indexes 1 OpenAPI specification for Engine Yard, each linked for download from this page.

How much does the Engine Yard API cost?

APIs.io lists 3 pricing plans for Engine Yard, with each plan's price, limits and inclusions under Pricing Plans on this page.

Is the Engine Yard API ready for AI agents?

Engine Yard has a Kin Score of 40.5 out of 100 (developing) and an Agent Readiness score of 12.9 (agent-aware), scored by API Evangelist on 2026-10-31.

Work with this as data

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MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for providers

9 MCP tools reach this

find_providersBrowse and filter every provider in the catalog.
get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools →

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Every operation they expose

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How their score was established

curl "https://apis.io/api/v1/providers/engine-yard/evidence"

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