WGL Holdings

WGL Holdings was an integrated energy holding company headquartered in Washington, D.C., serving over 1 million customers across the District of Columbia, Maryland, and Virginia. Its operations spanned regulated natural gas distribution (Washington Gas), retail energy marketing (WGL Energy Services), commercial energy systems, and midstream energy services (WGL Midstream, Hampshire Gas). WGL Holdings was acquired by AltaGas on July 6, 2018, and continues to operate as a subsidiary.

WGL Holdings is listed with 3 APIs on the APIs.io network. Tagged areas include Energy, Natural Gas, Utilities, Electricity, and Retail Energy.

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

🌐 Visit website 📡 Profile data on GitHub

14.7/100 emerging ▬ flat Agent 1/100 human only saas Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

AccessFreemium

3 APIs

Energy Natural Gas Utilities Electricity Retail Energy Midstream Fortune 1000

Kin Score

Kin Score How this is scored →
scored 2026-11-13 · rubric v0.28.0

Composite quality — 14.7/100 · emerging

Contract Quality 2.3 / 21

Developer Ergonomics 0.0 / 17

Access Clarity 2.9 / 17

Operational Transparency 0.8 / 11

Contract Governance 2.4 / 10

Discoverability 5.3 / 9

Regulatory Posture 0.6 / 15

Agent readiness — 1/100 · 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 Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

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.

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/.

Show this score on your site.

It updates itself when the score changes. Paste this where you link to your API docs:

<a href="https://apis.io/providers/wgl-holdings/"><img src="https://apis.io/badge/wgl-holdings/card.svg" alt="WGL Holdings on APIs.io — Kin Score by API Evangelist"></a>

Other styles, a README pill and a shields.io endpoint are on the badge page.

Raise your score.

Agent readiness — checks not met, largest first (exact, from this profile):

Machine-Readable Contract +18 pts — api_specs includes an OpenAPI document Ask about this →
MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship Ask about this →
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author Ask about this →
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) Ask about this →
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) Ask about this →
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes Ask about this →

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 10.7 — up to +22.3 composite points Ask about this →
Developer Ergonomics scores 0.0 — up to +20.0 composite points Ask about this →
Access Clarity scores 17.0 — up to +16.6 composite points Ask about this →

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.

Not sure how this applies to your stack? Ask about any one item. Kin Lane reads every question, looks at your profile and your situation, and replies with what a fix would take — scoped to that one area, priced up front, yours whether you ship it or not. Ask a question →

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/wgl-holdings/apis.yml: open an issue on github.com/api-evangelist/wgl-holdings 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 3

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

WGL Energy Services

WGL Energy Services is an unregulated retail energy subsidiary of WGL Holdings that sells natural gas and electricity to commercial, industrial, and residential customers in Mar...

WGL Midstream

WGL Midstream, Inc. is a subsidiary of Washington Gas Resources engaged in acquiring and optimizing natural gas storage and transportation assets. It focuses on midstream energy...

Hampshire Gas

Hampshire Gas Company owns and operates interests in natural gas storage facilities in and around Hampshire County, West Virginia. It provides underground natural gas storage se...

WGL Holdings API pricing

Not yet checked against WGL Holdings's own pricing page. Compiled by API Evangelist on 2026-05-04; confirm before you rely on a figure. A free plan or tier is listed.

Plan	Price
Free freemium	Free
Professional paid	Free
Enterprise enterprise	—

Plan details, limits and sources →

Rate limits

Free Tier Default: 10 requests per minute
Free Tier Monthly Quota: 1000 requests per month
Professional Tier Default: 100 requests per minute

Compiled by API Evangelist, not yet checked against WGL Holdings's documentation. All 5 limits →

Pricing Plans 1

Published pricing tiers and plan structures.

WGL Holdings Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

WGL Holdings Rate Limits

5 limits

RATE LIMITS

FinOps 1

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

WGL Holdings Finops

FINOPS

Semantic Vocabularies 1

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

Wgl Holdings Context

39 classes · 0 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs. Counts are the severity each rule declares, not results of running them.

WGL Holdings — jsonschema rules

5 rules · 3 warn-severity 2 info-severity

SPECTRAL

JSON Schema 1

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

WGL Holdings Customer Account

10 properties

JSON SCHEMA

JSON Structure 1

JSON Structure definitions describing this provider's data shapes.

WGL Holdings Customer Account Structure

0 properties

JSON STRUCTURE

Security Posture 1

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

WGL Holdings Domain Security

TLSv1.3 · DMARC

SECURITY

Press 5

Recent news and press coverage referencing this provider.

Ronald Blauch - WGL Holdings Inc

XBRL Viewer

Dissecting Corporate Culture Using Generative AI

Visteon Set to Join S&P MidCap 400

Climate and Energy

Resources

Documentation 1

Reference material describing how the API behaves

JSONSchema

JSONSchema

Design & Contract 2

Pagination, idempotency, versioning, errors, and events

Vocabulary

Vocabulary

JSONLDContext

JSONLDContext

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

Company 2

The organization behind the API

LinkedIn

Website

Website

Other 5

Properties that don't map to a standard resource type

Parent Company

Washington Gas

WGL Energy

Sustainability

Wikipedia

Source (apis.yml)

aid: wgl-holdings
name: WGL Holdings
description: WGL Holdings was an integrated energy holding company headquartered in Washington, D.C., serving over 1 million
  customers across the District of Columbia, Maryland, and Virginia. Its operations spanned regulated natural gas distribution
  (Washington Gas), retail energy marketing (WGL Energy Services), commercial energy systems, and midstream energy services
  (WGL Midstream, Hampshire Gas). WGL Holdings was acquired by AltaGas on July 6, 2018, and continues to operate as a subsidiary.
type: Index
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: low
  source:
  - plans
  - security
  generated: '2026-11-13'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/wgl-holdings.png
tags:
- Energy
- Natural Gas
- Utilities
- Electricity
- Retail Energy
- Midstream
- Fortune 1000
url: https://raw.githubusercontent.com/api-evangelist/wgl-holdings/refs/heads/main/apis.yml
created: '2026-03-24'
modified: '2026-07-25'
specificationVersion: '0.23'
apis:
- aid: wgl-holdings:wgl-energy-services
  name: WGL Energy Services
  description: WGL Energy Services is an unregulated retail energy subsidiary of WGL Holdings that sells natural gas and electricity
    to commercial, industrial, and residential customers in Maryland, Virginia, Delaware, Pennsylvania, Ohio, D.C., and New
    Jersey. It also offers renewable energy products and carbon neutrality solutions.
  humanURL: https://www.wglenergy.com
  tags:
  - Retail Energy
  - Natural Gas
  - Electricity
  - Renewable Energy
  - Carbon Neutrality
  properties:
  - type: Website
    url: https://www.wglenergy.com
  - type: Customer Portal
    url: https://my.wges.com
  - type: Login
    url: https://one.wglenergy.com/dms/index.php
- aid: wgl-holdings:wgl-midstream
  name: WGL Midstream
  description: WGL Midstream, Inc. is a subsidiary of Washington Gas Resources engaged in acquiring and optimizing natural
    gas storage and transportation assets. It focuses on midstream energy services including gas storage, pipeline capacity,
    and energy asset management.
  humanURL: https://www.wgl.com
  tags:
  - Midstream
  - Natural Gas Storage
  - Pipelines
  - Energy Assets
  tags_raw:
  - Midstream
  - Natural Gas Storage
  - Pipeline
  - Energy Assets
  properties:
  - type: Website
    url: https://www.wgl.com
- aid: wgl-holdings:hampshire-gas
  name: Hampshire Gas
  description: Hampshire Gas Company owns and operates interests in natural gas storage facilities in and around Hampshire
    County, West Virginia. It provides underground natural gas storage services that support pipeline operations and supply
    reliability.
  humanURL: https://www.wgl.com
  tags:
  - Natural Gas Storage
  - Underground Storage
  - West Virginia
  - Pipelines
  tags_raw:
  - Natural Gas Storage
  - Underground Storage
  - West Virginia
  - Pipeline
  properties:
  - type: Website
    url: https://www.wgl.com
common:
- type: Plans
  url: plans/wgl-holdings-plans-pricing.yml
- type: RateLimits
  url: rate-limits/wgl-holdings-rate-limits.yml
- type: FinOps
  url: finops/wgl-holdings-finops.yml
- type: DomainSecurity
  url: security/wgl-holdings-domain-security.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/wgl
- type: Website
  url: https://www.wglholdings.com
- type: Parent Company
  url: https://www.altagas.ca
- type: Washington Gas
  url: https://www.washingtongas.com
- type: WGL Energy
  url: https://www.wglenergy.com
- type: Sustainability
  url: https://sustainability.wglholdings.com
- type: Wikipedia
  url: https://en.wikipedia.org/wiki/WGL_Holdings
- type: Vocabulary
  url: https://raw.githubusercontent.com/api-evangelist/wgl-holdings/refs/heads/main/vocabulary/wgl-holdings-vocabulary.yml
- type: JSONLDContext
  url: https://raw.githubusercontent.com/api-evangelist/wgl-holdings/refs/heads/main/json-ld/wgl-holdings-context.jsonld
- type: JSONSchema
  url: https://raw.githubusercontent.com/api-evangelist/wgl-holdings/refs/heads/main/json-schema/wgl-holdings-customer-account-schema.json
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

WGL Holdings API — frequently asked questions

Does WGL Holdings have an API?

Yes. APIs.io lists 3 APIs from WGL Holdings, including WGL Energy Services, WGL Midstream and Hampshire Gas.

How much does the WGL Holdings API cost?

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

Is the WGL Holdings API ready for AI agents?

WGL Holdings has a Kin Score of 14.7 out of 100 (emerging) and an Agent Readiness score of 0.6 (human-only), scored by API Evangelist on 2026-11-13.

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/wgl-holdings"

All providers

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

Every operation they expose

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

How their score was established

curl "https://apis.io/api/v1/providers/wgl-holdings/evidence"

Calls without X-API-Key need no key. Calls with it need a paid plan — get a key.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

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