Materials Project Documentation
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  • Introduction
  • Frequently Asked Questions (FAQ)
    • Glossary of Terms
  • Changes and Updates
    • Database Versions
    • Website Changelog
  • Documentation Credit
  • Community
    • Getting Help
    • Getting Involved
      • Contributor Guide
      • Potential Collaborators
      • MP Community Software Ecosystem
    • Community Resources
    • Code of Conduct
  • Services
    • MPContribs
  • Methodology
    • Materials Methodology
      • Overview
      • Calculation Details
        • GGA/GGA+U Calculations
          • Parameters and Convergence
          • Hubbard U Values
          • Pseudo-potentials
        • r2SCAN Calculations
          • Parameters and Convergence
          • Pseudopotentials
      • Thermodynamic Stability
        • Energy Corrections
          • Anion and GGA/GGA+U Mixing
          • GGA/GGA+U/r2SCAN Mixing
        • Phase Diagrams (PDs)
        • Chemical Potential Diagrams (CPDs)
        • Finite Temperature Estimation
      • Electronic Structure
      • Phonon Dispersion
      • Diffraction Patterns
      • Aqueous Stability (Pourbaix)
      • Magnetic Properties
      • Elastic Constants
      • Piezoelectric Constants
      • Dielectric Constants
      • Equations of State (EOS)
      • X-ray Absorption Spectra (XAS)
      • Surface Energies
      • Grain Boundaries
      • Charge Density
      • Suggested Substrates
      • Related Materials
      • Optical absorption spectra
      • Alloys
    • Molecules Methodology
      • Overview
      • Calculation Details
      • Atomic Partial Charges
      • Atomic Partial Spins
      • Bonding
      • Metal Coordination and Binding
      • Natural Atomic and Molecular Orbitals
      • Redox and Electrochemical Properties
      • Molecular Thermodynamics
      • Vibrational Properties
      • Legacy Data
    • MOF Methodology
      • Calculation Parameters
        • DFT Parameters
        • Density Functionals
        • Pseudopotentials
        • DFT Workflow
  • Apps
    • Explore and Search Apps
      • Materials Explorer
        • Tutorial
      • Molecules Explorer
        • Tutorial
        • Legacy Data
      • Battery Explorer
        • Background
        • Tutorial
      • Synthesis Explorer
        • Background
        • Tutorial
      • Catalysis Explorer
        • Tutorial
      • MOF Explorer
        • Downloading the Data
        • Structure Details
          • QMOF IDs
          • Structure Sources
          • Finding MOFs by Common Name
          • Structural Fidelity
        • Property Definitions
          • SMILES, MOFid, and MOFkey
          • Pore Geometry
          • Topology
          • Electronic Structure
          • Population Analyses and Bond Orders
          • Symmetry
        • Version History
        • How to Cite
    • Analysis Apps
      • Phase Diagram
        • Background
        • Tutorials
        • FAQ
      • Pourbaix Diagram
        • Background
        • Tutorial
        • FAQ
      • Crystal Toolkit
        • Background
        • Tutorial
        • FAQ
      • Reaction Calculator
      • Interface Reactions
    • Characterization Apps
      • X-ray Absorption Spectra (XAS)
    • Explore Contributed Data
  • Downloading Data
    • How do I download the Materials Project database?
    • Using the API
      • Getting Started
      • Querying Data
      • Tips for Large Downloads
      • Examples
      • Advanced Usage
    • Differences between new and legacy API
    • Query and Download Contributed Data
    • AWS OpenData
  • Uploading Data
    • Contribute Data
  • Data Production
    • Data Workflows
    • Data Builders
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  1. Downloading Data

Differences between new and legacy API

Comparison between the old (legacy) and new Materials Project (MP) APIs.

PreviousAdvanced UsageNextQuery and Download Contributed Data

Last updated 24 days ago

Was this helpful?

A summary of differences between the new and legacy API can be found in the table below. For more detailed information on differences regarding the Python API client.

New API
Legacy API

Currently recommended for

Early adopters

Everyone else

Base URL

api.materialsproject.org

materialsproject.org/rest/v2

Documentation

Specification

None available

Support

Our new API will be supported for the forseeable future once released

Will be available for at least one year after new API is finalized

Data Updates

Will receive new data updates included latest and most accurate data

Will be frozen at database release v2021.03.13

API Key

Available at

Python client installation

pip install mp-api (may be available in pymatgen at a later date)

pip install pymatgen

Python client import code

from mp_api.client import MPRester

from pymatgen.ext.matproj import MPRester

MPContribs integration for user contributed data

Yes

No

api.materialsproject.org/docs
mapidoc
OpenAPI-compliant specification available
Available here
legacy.materialsproject.org/open