Southwestern Energy website screenshot

Southwestern Energy

Southwestern Energy Company (SWN) is one of the largest producers of natural gas in the United States, with exploration and production operations focused primarily on the Marcellus and Haynesville shales. In October 2024, Southwestern Energy completed a merger with Expand Energy Corporation (formerly Chesapeake Energy), though the SWN brand and investor relations infrastructure continues to operate under swn.com. As a Fortune 500 energy company, SWN focuses on responsible development of natural gas resources in the Appalachian Basin and Gulf Coast regions.

Southwestern Energy publishes 2 APIs on the APIs.io network. Tagged areas include Fortune 500, Natural Gas, Energy, and Oil And Gas.

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

Southwestern Energy’s developer surface includes engineering blog and 8 more developer resources.

26.9/100 emerging ▬ flat Agent 3/100 human only Full breakdown ↓
scored 2026-08-05 · rubric v0.9.1
AccessEnterprise
2 APIs
Fortune 500Natural GasEnergyOil And Gas

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-05 · rubric v0.9.1
Composite quality — 26.9/100 · emerging
Contract Quality 6.9 / 25
Developer Ergonomics 0.4 / 20
Commercial Clarity 5.8 / 20
Operational Transparency 2.7 / 13
Governance 8.3 / 12
Discoverability 5.0 / 10
Agent readiness — 3/100 · human only
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 10
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
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/southwestern-energy: 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.

Southwestern Energy Investor Relations API

The Southwestern Energy investor relations portal provides financial data, shareholder information, earnings summaries, SEC filings, and corporate governance information. The in...

Expand Energy Investor Relations API

Following the merger, Expand Energy Corporation's investor relations portal provides access to combined company financial data, earnings releases, SEC filings, and investor pres...

Pricing Plans 1

Published pricing tiers and plan structures.

Rate Limits 1

Documented rate limits and quota policies.

Southwestern Energy Rate Limits

1 limits

RATE LIMITS

FinOps 1

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

Semantic Vocabularies 1

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

Southwestern Energy Context

8 classes · 13 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Southwestern Energy API Rules

5 rules · 4 warnings 1 info

SPECTRAL

JSON Schema 1

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

JSON Structure 1

JSON Structure definitions describing this provider's data shapes.

Southwestern Energy Production Structure

0 properties

JSON STRUCTURE

Examples 1

Example request and response payloads for these APIs.

Security Posture 1

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

Southwestern Energy Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Press 5

Recent news and press coverage referencing this provider.

Chesapeake to become top US natural gas producer with ...

2026-05-25

Industry Veterans Unite Operations, Chart Course As ...

2026-05-25

Chesapeake Energy Corporation and Southwestern ...

2026-05-25

tm243657-1_s4 - none - 58.1072356s

2026-05-25

Chesapeake Energy Corp. is buying Southwestern ...

2026-05-25

Resources

Design & Contract 2

Pagination, idempotency, versioning, errors, and events

Access & Security 1

Authentication, authorization, and security posture

Company 4

The organization behind the API

Other 2

Properties that don't map to a standard resource type

Source (apis.yml)

apis.yml Raw ↑
aid: southwestern-energy
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/southwestern-energy.png
name: Southwestern Energy
description: Southwestern Energy Company (SWN) is one of the largest producers of natural gas in the United States, with exploration
  and production operations focused primarily on the Marcellus and Haynesville shales. In October 2024, Southwestern Energy
  completed a merger with Expand Energy Corporation (formerly Chesapeake Energy), though the SWN brand and investor relations
  infrastructure continues to operate under swn.com. As a Fortune 500 energy company, SWN focuses on responsible development
  of natural gas resources in the Appalachian Basin and Gulf Coast regions.
url: https://raw.githubusercontent.com/api-evangelist/southwestern-energy/refs/heads/main/apis.yml
created: '2026-03-24'
modified: '2026-05-02'
specificationVersion: '0.19'
tags:
- Fortune 500
- Natural Gas
- Energy
- Oil And Gas
apis:
- aid: southwestern-energy:southwestern-energy-investor-relations-api
  name: Southwestern Energy Investor Relations API
  description: The Southwestern Energy investor relations portal provides financial data, shareholder information, earnings
    summaries, SEC filings, and corporate governance information. The investor relations infrastructure continues to operate
    at ir.swn.com following the merger with Expand Energy Corporation.
  humanURL: https://ir.swn.com/
  tags:
  - Investor Relations
  - Financial Data
  - Natural Gas
  properties:
  - type: Website
    url: https://ir.swn.com/CorporateProfile/default.aspx
  - type: Investor FAQ
    url: https://ir.swn.com/resources/investor-faq/default.aspx
  - type: Shareholder Information
    url: https://www.swn.com/investors/shareholder-information/
  - type: JSONSchema
    url: https://raw.githubusercontent.com/api-evangelist/southwestern-energy/refs/heads/main/json-schema/southwestern-energy-production-schema.json
- aid: southwestern-energy:expand-energy-investor-api
  name: Expand Energy Investor Relations API
  description: Following the merger, Expand Energy Corporation's investor relations portal provides access to combined company
    financial data, earnings releases, SEC filings, and investor presentations for the merged natural gas production company.
  humanURL: https://investors.expandenergy.com/
  tags:
  - Investor Relations
  - Financial Data
  - Natural Gas
  - Energy
  properties:
  - type: Website
    url: https://investors.expandenergy.com/
  - type: Annual Report
    url: https://investors.expandenergy.com/static-files/e946a7e5-4ef1-4e8b-ba7b-f51506895db0
common:
- type: DomainSecurity
  url: security/southwestern-energy-domain-security.yml
- url: https://www.expandenergy.com/feed/
  type: Blog
- type: Website
  url: https://www.swn.com
- type: Investor Relations
  url: https://ir.swn.com/
- type: Expand Energy
  url: https://www.expandenergy.com/
- type: LinkedIn
  url: https://www.linkedin.com/company/southwestern-energy
- type: X
  url: https://twitter.com/SWNenergy
- type: JSONLDContext
  url: https://raw.githubusercontent.com/api-evangelist/southwestern-energy/refs/heads/main/json-ld/southwestern-energy-context.jsonld
- type: Vocabulary
  url: https://raw.githubusercontent.com/api-evangelist/southwestern-energy/refs/heads/main/vocabulary/southwestern-energy-vocabulary.yml
maintainers:
- FN: API Evangelist
  email: info@apievangelist.com