Materials Project Materials Oxidation States API
Route providing computed oxidation state data for a material following the methodology employed by the [BVAnalyzer](https://pymatgen.org/pymatgen.analysis.bond_valence.html) in Pymatgen. Note that oxidation state data has not been calculated for all materials in the Materials Project database. See the `OxidationStateDoc` schema for a full list of fields returned by this route.
Materials Project Materials Oxidation States API is one of 29 APIs that Materials Project publishes on the APIs.io network, described by a machine-readable OpenAPI specification.
Tagged areas include Materials Oxidation States. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, and a getting-started guide.
This API exposes 1 operation across 1 path, and defines 15 schemas. It is described by OpenAPI 3.1.0, at version 0.86.4rc5.dev1+g77c2c1315.
Requests are made against the base URL https://api.materialsproject.org.
Metadata
The identity and technical contract details declared by the specification.
Authentication & Security 1
Materials Project Materials Oxidation States API declares
1 security scheme
for authenticating requests.
An API key is passed in the header as X-API-KEY (ApiKeyAuth).
By default, every request must be authenticated.
Paths & Operations 1
Across 1 path, the API surfaces 1 operation — 1 GET. Each is listed below with its method, path, parameters, and response codes.
Route providing computed oxidation state data for a material following the methodology employed by the [BVAnalyzer](https://pymatgen.org/pymatgen.analysis.bondvalence.html) in Pym…
Schemas 15
The contract defines 15 schemas that model the data the API accepts and returns. The most detailed are OxidationStateDoc (25 properties), TypedLatticeDict (9 properties), SymmetryData (8 properties), EmmetMeta (7 properties). Each schema is shown below with its type and property counts.
Specification
The full machine-readable OpenAPI contract behind this narrative.
Source
More from Materials Project 12
Other APIs Materials Project publishes across the network.
This is an independent, third-party profile of Materials Project Materials Oxidation States API, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.
The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.
Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.
info@apievangelist.com
·
Read the full data-sourcing policy →
On a security or compliance team? Put security in the subject line and
you will get a person, not a form — we will tell you exactly which public URLs this profile was built from.