Category: API

REST APIs for Petroleum Engineering

The pengtools API gives programmatic access to the engineering calculators that power www.pengtools.com.

Available APIs

• PVT API - Fluid properties calculator

Base URL

https://api.pengtools.com/

Endpoints are addressed as <base>/<resource>/<action>, e.g.

https://api.pengtools.com/pvt-calculator/calc

. All examples below use this base URL.

Authentication

Every request must include an API key as a Bearer token:

Authorization: Bearer <api_key>

A key is a single opaque token. It is stored only as a salted hash on the server, so the plaintext is shown once, at creation time, and cannot be recovered afterwards.

Getting a key

Manage your keys in the accounts portal:

1. Sign in at accounts.pengtools.com.
2. Open the API keys section of your profile.
3. Click Create to issue a new key, optionally giving it a name.

The new token is displayed once, right after creation. Copy it immediately and store it as a secret (environment variable, secrets manager). If you lose it, revoke the key on the same page and create a new one. The page also lists your existing keys (without the plaintext) and lets you revoke any of them.

A request with no key, or an invalid/revoked key, returns HTTP 401.

Response envelope

Every JSON response is wrapped in a uniform envelope:

{ "success": true,  "data": { "...": "..." } }
{ "success": false, "data": { "errors": { "...": "..." } } }

success mirrors the HTTP status (2xx → true). Validation problems return 422, rate-limit rejections return 429. See the error reference for details.

Getting Started

1. Authentication - API key setup 2. API Reference - Endpoint documentation 3. Rate Limits - Usage policies

Support

For questions or issues, contact Support or visit our contact page.