Materials Project API

Search and retrieve computed materials data from the Materials Project database (v3 API). Covers 150k+ inorganic crystalline materials with DFT-computed properties.

Authentication

All requests require the X-API-KEY header set to your Materials Project API key. Store it in the MP_API_KEY environment variable.

export MP_API_KEY="your_api_key_here"

API Base URL

https://api.materialsproject.org/v3