Southwest Gas

Southwest Gas Holdings is a natural gas distribution company that purchases, distributes, and transports natural gas for customers in Arizona, Nevada, and California. As a Fortune 1000 utility company headquartered in Las Vegas, Nevada, Southwest Gas serves over 2 million customers through its regulated utility segment and also operates Centuri Group, a full-service utility infrastructure services company.

Southwest Gas publishes 2 APIs on the APIs.io network. Tagged areas include Fortune 1000, Natural Gas, Utility, and Energy.

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

🌐 Visit website 📡 Source on GitHub

18.6/100 emerging ▬ flat Agent 3/100 human only Full breakdown ↓
scored 2026-08-25 · rubric v0.14.0

AccessEnterprise

2 APIs

Fortune 1000 Natural Gas Utility Energy

Kin Score

Kin Score How this is scored →
scored 2026-08-25 · rubric v0.14.0

Composite quality — 18.6/100 · emerging

Contract Quality 6.0 / 21

Developer Ergonomics 0.0 / 17

Access Clarity 2.2 / 17

Operational Transparency 0.6 / 11

Contract Governance 2.6 / 10

Discoverability 5.0 / 9

Regulatory Posture 2.2 / 15

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

Regulatory Posture applies to this provider. Its tags matched the Energy & Utilities 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.

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/. This rating is computed from github.com/api-evangelist/southwest-gas: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 2

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

Rate Limits 1

Documented rate limits and quota policies.

Southwest Gas Rate Limits

1 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

JSON Schema 2

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

Examples 2

Example request and response payloads for these APIs.

Press 5

Recent news and press coverage referencing this provider.

Get Started 2

Portal, sign-up, and the first successful call

Customer Portal

Customer Portal

Agency Portal

Agency Portal

Design & Contract 2

Pagination, idempotency, versioning, errors, and events

JSONLDContext

JSONLDContext

Vocabulary

Vocabulary

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Company 3

The organization behind the API

Website

Website

Investor Relations

Investor Relations

LinkedIn

Other 2

Properties that don't map to a standard resource type

Mobile App

Mobile App

Source (apis.yml)

aid: southwest-gas
accessModel:
  pricing: enterprise
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Enterprise
  confidence: medium
  source:
  - plans
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/southwest-gas.png
name: Southwest Gas
description: Southwest Gas Holdings is a natural gas distribution company that purchases, distributes, and transports natural
  gas for customers in Arizona, Nevada, and California. As a Fortune 1000 utility company headquartered in Las Vegas, Nevada,
  Southwest Gas serves over 2 million customers through its regulated utility segment and also operates Centuri Group, a full-service
  utility infrastructure services company.
url: https://raw.githubusercontent.com/api-evangelist/southwest-gas/refs/heads/main/apis.yml
created: '2026-03-24'
modified: '2026-05-02'
specificationVersion: '0.23'
tags:
- Fortune 1000
- Natural Gas
- Utility
- Energy
apis:
- aid: southwest-gas:southwest-gas-my-account-api
  name: Southwest Gas My Account API
  description: The Southwest Gas My Account API powers the online customer portal and mobile application for natural gas utility
    customers in Arizona, Nevada, and California. Customers can view usage history, pay bills, manage account settings, and
    receive outage notifications through the portal.
  humanURL: https://myaccount.swgas.com/
  baseURL: https://myaccount.swgas.com
  tags:
  - Natural Gas
  - Customer Account
  - Utility
  - Billing
  properties:
  - type: Website
    url: https://myaccount.swgas.com/Portal/
  - type: Mobile Application
    url: https://www.swgas.com/en/mobile-app
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/southwest-gas/refs/heads/main/json-schema/southwest-gas-account-schema.json
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/southwest-gas/refs/heads/main/json-schema/southwest-gas-usage-schema.json
- aid: southwest-gas:southwest-gas-agency-portal-api
  name: Southwest Gas Agency Portal API
  description: The Southwest Gas Agency Portal provides access for charitable organizations and assistance agencies to look
    up customer accounts and submit utility assistance pledges on behalf of customers in need.
  humanURL: https://agency.swgas.com/Portal/
  baseURL: https://agency.swgas.com
  tags:
  - Natural Gas
  - Agency
  - Assistance
  - Utility
  properties:
  - type: Website
    url: https://agency.swgas.com/Portal/
  - type: FAQ
    url: https://h1www.swgas.com/en/agency-portal-faqs
common:
- type: DomainSecurity
  url: security/southwest-gas-domain-security.yml
- type: Website
  url: https://www.swgas.com
- type: Customer Portal
  url: https://myaccount.swgas.com/
- type: Agency Portal
  url: https://agency.swgas.com/Portal/
- type: Mobile App
  url: https://www.swgas.com/en/mobile-app
- type: Investor Relations
  url: https://investors.swgasholdings.com/
- type: LinkedIn
  url: https://www.linkedin.com/company/southwest-gas
- type: X
  url: https://twitter.com/SouthwestGas
- type: JSONLDContext
  url: https://raw.githubusercontent.com/api-evangelist/southwest-gas/refs/heads/main/json-ld/southwest-gas-context.jsonld
- type: Vocabulary
  url: https://raw.githubusercontent.com/api-evangelist/southwest-gas/refs/heads/main/vocabulary/southwest-gas-vocabulary.yml
maintainers:
- FN: API Evangelist
  email: info@apievangelist.com

Work with this as data

Every provider here is available over the APIs.io API and to AI agents over MCP.

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

Call it yourself

curl for this page

This provider

curl "https://apis.io/api/v1/providers/southwest-gas"

All providers

curl "https://apis.io/api/v1/providers?limit=25"

Every operation they expose

curl "https://apis.io/api/v1/providers/southwest-gas/operations?limit=25"

How their score was established

curl "https://apis.io/api/v1/providers/southwest-gas/evidence"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no email required.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.

Southwest Gas

APIs 2

Pricing Plans 1

Rate Limits 1

FinOps 1

Semantic Vocabularies 1

Spectral Rules 1

JSON Schema 2

JSON Structure 1

Examples 2

Security Posture 1

Press 5

Southwest Gas Holdings, Inc. Reports First Quarter 2026 ...

Southwest Gas Holdings Announces Decision to Separate ...

Southwest Gas Gets Upgrade Ahead of Strong 2026 Earnings

XBRL Viewer

2024 Sustainability Report