Tesoro website screenshot

Tesoro

Tesoro Corporation (later rebranded as Andeavor) was a Fortune 100 independent petroleum refiner and marketer headquartered in San Antonio, Texas. Founded in 1968, the company operated ten refineries in the Western United States with combined crude oil capacity of approximately 1.2 million barrels per day and approximately 3,000 branded retail gas stations. Tesoro rebranded as Andeavor in 2017 following its acquisition of Western Refining, and was acquired by Marathon Petroleum on October 1, 2018. No public developer API was offered.

Tesoro is profiled on the APIs.io network. Tagged areas include Petroleum, Refining, Energy, Oil And Gas, and Retail Fuel.

The Tesoro catalog on APIs.io includes 1 JSON-LD context.

Tesoro’s developer surface includes documentation and 5 more developer resources.

🌐 Visit website 📡 Source on GitHub
12.3/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5
0 APIs
PetroleumRefiningEnergyOil And GasRetail FuelFortune 100

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 12.3/100 · minimal
Contract Quality 3.8 / 25
Developer Ergonomics 1.7 / 20
Commercial Clarity 0.0 / 20
Operational Transparency 0.0 / 13
Governance 0.0 / 12
Discoverability 6.8 / 10
Agent readiness — 0/100 · human only
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 15
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
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/tesoro: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Semantic Vocabularies 1

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

Tesoro Context

20 classes · 0 properties

JSON-LD

Security Posture 1

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

Tesoro Domain Security

TLSv1.3 · DMARC

SECURITY

Press 5

Recent news and press coverage referencing this provider.

Tesoro VC, Startup Island Taiwan sign MOU for startup growth

2026-05-25

The Tesoro AI Podcast

2026-05-25

Tesoro VC Launches Global AI + Semiconductor ...

2026-05-25

Tesoro VC Launches AI Semiconductor Accelerator Phoenix

2026-05-25

The Tesoro AI Podcast

2026-05-25

Resources

Documentation 1

Reference material describing how the API behaves

Documentation
Documentation

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity

Company 4

The organization behind the API

LinkedIn
LinkedIn
 Website
Website
 Website
Website
 Website
Website

Source (apis.yml)

apis.yml Raw ↑ 
aid: tesoro
name: Tesoro
description: Tesoro Corporation (later rebranded as Andeavor) was a Fortune 100 independent petroleum refiner and marketer
  headquartered in San Antonio, Texas. Founded in 1968, the company operated ten refineries in the Western United States with
  combined crude oil capacity of approximately 1.2 million barrels per day and approximately 3,000 branded retail gas stations.
  Tesoro rebranded as Andeavor in 2017 following its acquisition of Western Refining, and was acquired by Marathon Petroleum
  on October 1, 2018. No public developer API was offered.
type: Index
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/tesoro.png
tags:
- Petroleum
- Refining
- Energy
- Oil And Gas
- Retail Fuel
- Fortune 100
url: https://raw.githubusercontent.com/api-evangelist/tesoro/refs/heads/main/apis.yml
created: '2026-03-16'
modified: '2026-05-03'
specificationVersion: '0.19'
apis: []
common:
- type: DomainSecurity
  url: security/tesoro-domain-security.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/tesoro
- name: Tesoro Website (Archive)
  url: https://www.tesoro.com
  type: Website
- name: Andeavor (formerly Tesoro)
  url: https://web.archive.org/web/20180101000000*/andeavor.com
  type: Website
- name: Marathon Petroleum (Acquired Andeavor/Tesoro)
  url: https://www.marathonpetroleum.com
  type: Website
- name: Tesoro Corporation Wikipedia
  url: https://en.wikipedia.org/wiki/Tesoro_Corporation
  type: Documentation
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com