Green Hills Software

Green Hills Software is a privately held embedded software company founded in 1982 by Dan O'Dowd and Carl Rosenberg and headquartered in Santa Barbara, California. It builds safety- and security-certified real-time operating systems (INTEGRITY, INTEGRITY-178 tuMP, u-velOSity), embedded hypervisors (INTEGRITY Multivisor, u-visor), optimizing C/C++/Ada/Fortran compilers, the MULTI and AdaMULTI integrated development environments, the TimeMachine back-in-time debug suite, the DoubleCheck static analyzer, the Green Hills Probe hardware debugger, and networking, file-system and USB middleware. Its customers ship these components inside aerospace, defense, automotive, medical, industrial, rail, telecommunications and consumer devices. Green Hills is a toolchain and operating-system vendor rather than an API provider: the programmable interfaces it ships are in-product C/C++, POSIX and MULTI-Python scripting APIs delivered with a licensed installation and documented in manuals distributed with the product, and its technical support portal at support.ghs.com requires an account. No public web API, developer portal, or machine-readable API description was found on any Green Hills host during enrichment.

Green Hills Software is profiled on the APIs.io network. Tagged areas include Company, Embedded Systems, Real-Time Operating Systems, RTOS, and Compilers.

Green Hills Software’s developer surface includes support, engineering blog, training material, and 14 more developer resources.

🌐 Visit website 📡 Source on GitHub
12.3/100 emerging ▬ flat Agent 3/100 human only Full breakdown ↓
scored 2026-08-25 · rubric v0.14.0
0 APIs
CompanyEmbedded SystemsReal-Time Operating SystemsRTOSCompilersDeveloper ToolsDebuggingVirtualizationSafety CriticalAutomotiveAerospace and DefenseCybersecurity

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-25 · rubric v0.14.0
Composite quality — 12.3/100 · emerging
Contract Quality 0.0 / 25
Developer Ergonomics 1.4 / 20
Access Clarity 3.7 / 20
Operational Transparency 0.0 / 13
Contract Governance 2.2 / 12
Discoverability 5.0 / 10
Agent readiness — 3/100 · 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 7 / 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 Surface 0 / 5
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/green-hills-software: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Pricing Plans 1

Published pricing tiers and plan structures.

Green Hills Software Plans Pricing

0 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Green Hills Software Rate Limits

0 limits

RATE LIMITS

Security Posture 1

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

Green Hills Software Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt
LLMsTxt

Design & Contract 1

Pagination, idempotency, versioning, errors, and events

Conformance
Conformance

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity
 Compliance
Compliance

Learn 1

Tutorials, courses, talks, and written guidance

Training
Training

Operate 3

Status, limits, changes, and where to get help

Support
Support
 Contact
Contact
 RateLimits
RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

PrivacyPolicy
PrivacyPolicy
 Plans
Plans

Company 6

The organization behind the API

Website
Website
 Blog
Blog
 BlogRSS
BlogRSS
 Partners
Partners
 About
About
 LinkedIn
LinkedIn

Other 1

Properties that don't map to a standard resource type

Products
Products

Source (apis.yml)

apis.yml Raw ↑ 
aid: green-hills-software
name: Green Hills Software
description: 'Green Hills Software is a privately held embedded software company founded in 1982 by Dan O''Dowd and Carl Rosenberg
  and headquartered in Santa Barbara, California. It builds safety- and security-certified real-time operating systems (INTEGRITY,
  INTEGRITY-178 tuMP, u-velOSity), embedded hypervisors (INTEGRITY Multivisor, u-visor), optimizing C/C++/Ada/Fortran compilers,
  the MULTI and AdaMULTI integrated development environments, the TimeMachine back-in-time debug suite, the DoubleCheck static
  analyzer, the Green Hills Probe hardware debugger, and networking, file-system and USB middleware. Its customers ship these
  components inside aerospace, defense, automotive, medical, industrial, rail, telecommunications and consumer devices. Green
  Hills is a toolchain and operating-system vendor rather than an API provider: the programmable interfaces it ships are in-product
  C/C++, POSIX and MULTI-Python scripting APIs delivered with a licensed installation and documented in manuals distributed
  with the product, and its technical support portal at support.ghs.com requires an account. No public web API, developer
  portal, or machine-readable API description was found on any Green Hills host during enrichment.'
image: https://www.ghs.com/images/logos/ghs_logo_hires2.png
url: https://raw.githubusercontent.com/api-evangelist/green-hills-software/refs/heads/main/apis.yml
x-type: company
x-source: harvest:secondary-market
specificationVersion: '0.20'
created: '2026-08-22'
modified: '2026-08-22'
tags:
- Company
- Embedded Systems
- Real-Time Operating Systems
- RTOS
- Compilers
- Developer Tools
- Debugging
- Virtualization
- Safety Critical
- Automotive
- Aerospace and Defense
- Cybersecurity
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/green-hills-software-domain-security.yml
- type: Website
  url: https://www.ghs.com/
- type: Products
  url: https://www.ghs.com/products.html
- type: Support
  url: https://support.ghs.com/
- type: Blog
  url: https://www.ghs.com/news/index.html
- type: BlogRSS
  url: https://www.ghs.com/news/news_feed.xml
- type: PrivacyPolicy
  url: https://www.ghs.com/policies/privacy_policy.html
- type: Contact
  url: https://www.ghs.com/contact/index.html
- type: Training
  url: https://www.ghs.com/training.html
- type: Partners
  url: https://www.ghs.com/partners/index.html
- type: About
  url: https://www.ghs.com/corporate/index.html
- type: LinkedIn
  url: https://www.linkedin.com/company/green-hills-software/
- type: Plans
  url: plans/green-hills-software-plans-pricing.yml
- type: RateLimits
  url: rate-limits/green-hills-software-rate-limits.yml
- type: Conformance
  url: conformance/green-hills-software-conformance.yml
- type: Compliance
  url: conformance/green-hills-software-conformance.yml
- type: LLMsTxt
  url: llms/green-hills-software-llms.txt
x-enrichment:
  date: '2026-08-22'
  status: minimal
  artifacts_added: 7
  pass: local-v1
x-coverage:
  state: none
  reason: no-developer-program
  detail: Green Hills Software ships an embedded RTOS and compiler toolchain as licensed end-user products and runs no developer
    program at all - no API host, no developer portal, no SDK in any public registry, and its only technical documentation
    surface (support.ghs.com) 302s every FAQ, application-note and download path to an email-link login.
  evidence:
  - url: https://www.ghs.com/openapi.json
    status: 404
  - url: https://www.ghs.com/.well-known/api-catalog
    status: 404
  - url: https://support.ghs.com/faq/
    status: 302
  - url: https://www.ghs.com/pricing.html
    status: 404
  checked: '2026-08-22'

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