---
title: "Get SummaryDoc documents"
method: GET
path: "/materials/summary/"
tags: ["Materials Summary"]
---

# Get SummaryDoc documents

`GET /materials/summary/`

## Query parameters

- `material_ids` string, nullable — Comma-separated list of material_id values to query on
- `formula` string, nullable — Query by formula including anonymized formula or by including wild cards. A comma delimited string list of anonymous formulas or regular formulas can also be provided.
- `chemsys` string, nullable — A comma delimited string list of chemical systems. Wildcards for unknown elements only supported for single chemsys queries
- `elements` string, nullable — Query by elements in the material composition as a comma-separated list
- `exclude_elements` string, nullable — Query by excluded elements in the material composition as a comma-separated list
- `possible_species` string — Comma delimited list of element symbols appended with oxidation states. (e.g. Cr2+,O2-)
- `crystal_system` string, nullable — Crystal system of the material. If a comma-separated string, will query by multiple crystal systems.
- `spacegroup_number` union — Space group number of the material. If a comma-separated string, will query by multiple space group numbers.
  - integer
  - string
- `spacegroup_symbol` string, nullable — Space group symbol of the material. If a comma-separated string, will query by multiple space group numbers.
- `is_stable` boolean, nullable — Whether the material is stable.
- `theoretical` boolean, nullable — Whether the material is theoretical.
- `ordering` 'FM' | 'AFM' | 'FiM' | 'NM' | 'Unknown' — Enumeration defining possible magnetic orderings.
- `is_gap_direct` boolean, nullable — Whether a band gap is direct or not.
- `is_metal` boolean, nullable — Whether the material is considered a metal.
- `weighted_surface_energy_EV_PER_ANG2_max` number, nullable — Query for maximum value of weighted_surface_energy_EV_PER_ANG2
- `weighted_surface_energy_EV_PER_ANG2_min` number, nullable — Query for minimum value of weighted_surface_energy_EV_PER_ANG2
- `weighted_surface_energy_max` number, nullable — Query for maximum value of weighted_surface_energy
- `weighted_surface_energy_min` number, nullable — Query for minimum value of weighted_surface_energy
- `weighted_work_function_max` number, nullable — Query for maximum value of weighted_work_function
- `weighted_work_function_min` number, nullable — Query for minimum value of weighted_work_function
- `surface_anisotropy_max` number, nullable — Query for maximum value of surface_anisotropy
- `surface_anisotropy_min` number, nullable — Query for minimum value of surface_anisotropy
- `shape_factor_max` number, nullable — Query for maximum value of shape_factor
- `shape_factor_min` number, nullable — Query for minimum value of shape_factor
- `e_ij_max_max` number, nullable — Query for maximum value of e_ij_max
- `e_ij_max_min` number, nullable — Query for minimum value of e_ij_max
- `e_total_max` number, nullable — Query for maximum value of e_total
- `e_total_min` number, nullable — Query for minimum value of e_total
- `e_ionic_max` number, nullable — Query for maximum value of e_ionic
- `e_ionic_min` number, nullable — Query for minimum value of e_ionic
- `e_electronic_max` number, nullable — Query for maximum value of e_electronic
- `e_electronic_min` number, nullable — Query for minimum value of e_electronic
- `n_max` number, nullable — Query for maximum value of n
- `n_min` number, nullable — Query for minimum value of n
- `universal_anisotropy_max` number, nullable — Query for maximum value of universal_anisotropy
- `universal_anisotropy_min` number, nullable — Query for minimum value of universal_anisotropy
- `homogeneous_poisson_max` number, nullable — Query for maximum value of homogeneous_poisson
- `homogeneous_poisson_min` number, nullable — Query for minimum value of homogeneous_poisson
- `total_magnetization_max` number, nullable — Query for maximum value of total_magnetization
- `total_magnetization_min` number, nullable — Query for minimum value of total_magnetization
- `total_magnetization_normalized_vol_max` number, nullable — Query for maximum value of total_magnetization_normalized_vol
- `total_magnetization_normalized_vol_min` number, nullable — Query for minimum value of total_magnetization_normalized_vol
- `total_magnetization_normalized_formula_units_max` number, nullable — Query for maximum value of total_magnetization_normalized_formula_units
- `total_magnetization_normalized_formula_units_min` number, nullable — Query for minimum value of total_magnetization_normalized_formula_units
- `num_magnetic_sites_max` integer, nullable — Query for maximum value of num_magnetic_sites
- `num_magnetic_sites_min` integer, nullable — Query for minimum value of num_magnetic_sites
- `num_magnetic_sites` integer, nullable — Query for num_magnetic_sites being equal to an exact value
- `num_magnetic_sites_not_eq` integer, nullable — Query for num_magnetic_sites being not equal to an exact value
- `num_magnetic_sites_eq_any` string — Query for num_magnetic_sites being any of these values. Provide a comma separated list.
- `num_magnetic_sites_neq_any` string — Query for num_magnetic_sites being not any of these values. Provide a comma separated list.
- `num_unique_magnetic_sites_max` integer, nullable — Query for maximum value of num_unique_magnetic_sites
- `num_unique_magnetic_sites_min` integer, nullable — Query for minimum value of num_unique_magnetic_sites
- `num_unique_magnetic_sites` integer, nullable — Query for num_unique_magnetic_sites being equal to an exact value
- `num_unique_magnetic_sites_not_eq` integer, nullable — Query for num_unique_magnetic_sites being not equal to an exact value
- `num_unique_magnetic_sites_eq_any` string — Query for num_unique_magnetic_sites being any of these values. Provide a comma separated list.
- `num_unique_magnetic_sites_neq_any` string — Query for num_unique_magnetic_sites being not any of these values. Provide a comma separated list.
- `dos_energy_up_max` number, nullable — Query for maximum value of dos_energy_up
- `dos_energy_up_min` number, nullable — Query for minimum value of dos_energy_up
- `dos_energy_down_max` number, nullable — Query for maximum value of dos_energy_down
- `dos_energy_down_min` number, nullable — Query for minimum value of dos_energy_down
- `band_gap_max` number, nullable — Query for maximum value of band_gap
- `band_gap_min` number, nullable — Query for minimum value of band_gap
- `cbm_max` number, nullable — Query for maximum value of cbm
- `cbm_min` number, nullable — Query for minimum value of cbm
- `vbm_max` number, nullable — Query for maximum value of vbm
- `vbm_min` number, nullable — Query for minimum value of vbm
- `efermi_max` number, nullable — Query for maximum value of efermi
- `efermi_min` number, nullable — Query for minimum value of efermi
- `uncorrected_energy_per_atom_max` number, nullable — Query for maximum value of uncorrected_energy_per_atom
- `uncorrected_energy_per_atom_min` number, nullable — Query for minimum value of uncorrected_energy_per_atom
- `energy_per_atom_max` number, nullable — Query for maximum value of energy_per_atom
- `energy_per_atom_min` number, nullable — Query for minimum value of energy_per_atom
- `formation_energy_per_atom_max` number, nullable — Query for maximum value of formation_energy_per_atom
- `formation_energy_per_atom_min` number, nullable — Query for minimum value of formation_energy_per_atom
- `energy_above_hull_max` number, nullable — Query for maximum value of energy_above_hull
- `energy_above_hull_min` number, nullable — Query for minimum value of energy_above_hull
- `equilibrium_reaction_energy_per_atom_max` number, nullable — Query for maximum value of equilibrium_reaction_energy_per_atom
- `equilibrium_reaction_energy_per_atom_min` number, nullable — Query for minimum value of equilibrium_reaction_energy_per_atom
- `nsites_max` integer, nullable — Query for maximum value of nsites
- `nsites_min` integer, nullable — Query for minimum value of nsites
- `nsites` integer, nullable — Query for nsites being equal to an exact value
- `nsites_not_eq` integer, nullable — Query for nsites being not equal to an exact value
- `nsites_eq_any` string — Query for nsites being any of these values. Provide a comma separated list.
- `nsites_neq_any` string — Query for nsites being not any of these values. Provide a comma separated list.
- `nelements_max` integer, nullable — Query for maximum value of nelements
- `nelements_min` integer, nullable — Query for minimum value of nelements
- `nelements` integer, nullable — Query for nelements being equal to an exact value
- `nelements_not_eq` integer, nullable — Query for nelements being not equal to an exact value
- `nelements_eq_any` string — Query for nelements being any of these values. Provide a comma separated list.
- `nelements_neq_any` string — Query for nelements being not any of these values. Provide a comma separated list.
- `volume_max` number, nullable — Query for maximum value of volume
- `volume_min` number, nullable — Query for minimum value of volume
- `density_max` number, nullable — Query for maximum value of density
- `density_min` number, nullable — Query for minimum value of density
- `density_atomic_max` number, nullable — Query for maximum value of density_atomic
- `density_atomic_min` number, nullable — Query for minimum value of density_atomic
- `k_voigt_max` number, nullable — Maximum value for the Voigt average of the bulk modulus in GPa.
- `k_voigt_min` number, nullable — Minimum value for the Voigt average of the bulk modulus in GPa.
- `k_reuss_max` number, nullable — Maximum value for the Reuss average of the bulk modulus in GPa.
- `k_reuss_min` number, nullable — Minimum value for the Reuss average of the bulk modulus in GPa.
- `k_vrh_max` number, nullable — Maximum value for the Voigt-Reuss-Hill average of the bulk modulus in GPa.
- `k_vrh_min` number, nullable — Minimum value for the Voigt-Reuss-Hill average of the bulk modulus in GPa.
- `g_voigt_max` number, nullable — Maximum value for the Voigt average of the shear modulus in GPa.
- `g_voigt_min` number, nullable — Minimum value for the Voigt average of the shear modulus in GPa.
- `g_reuss_max` number, nullable — Maximum value for the Reuss average of the shear modulus in GPa.
- `g_reuss_min` number, nullable — Minimum value for the Reuss average of the shear modulus in GPa.
- `g_vrh_max` number, nullable — Maximum value for the Voigt-Reuss-Hill average of the shear modulus in GPa.
- `g_vrh_min` number, nullable — Minimum value for the Voigt-Reuss-Hill average of the shear modulus in GPa.
- `has_reconstructed` boolean, nullable — Whether an entry or material has a reconstructed surface.
- `has_props` string, nullable — Comma-delimited list of possible properties given by HasPropsEnum to search for.
- `deprecated` boolean, nullable — Whether the material is marked as deprecated
- `_page` integer — Page number to request (takes precedent over _limit and _skip).
- `_per_page` integer — Number of entries to show per page (takes precedent over _limit and _skip). Limited to 1000.
- `_skip` integer — Number of entries to skip in the search.
- `_limit` integer — Max number of entries to return in a single query. Limited to 1000.
- `_fields` string — Fields to project from SummaryDoc as a list of comma separated strings. Fields include: `prop_origins` `phonon_IDs` `theoretical` `database_IDs` `possible_species` `weighted_surface_energy_EV_PER_ANG2` `weighted_surface_energy` `weighted_work_function` `surface_anisotropy` `shape_factor` `has_reconstructed` `e_ij_max` `e_total` `e_ionic` `e_electronic` `n` `bulk_modulus` `shear_modulus` `universal_anisotropy` `homogeneous_poisson` `is_magnetic` `ordering` `total_magnetization` `total_magnetization_normalized_vol` `total_magnetization_normalized_formula_units` `num_magnetic_sites` `num_unique_magnetic_sites` `types_of_magnetic_species` `dos` `dos_energy_up` `dos_energy_down` `bandstructure` `band_gap` `cbm` `vbm` `efermi` `is_gap_direct` `is_metal` `grain_boundaries` `xas` `uncorrected_energy_per_atom` `energy_per_atom` `formation_energy_per_atom` `energy_above_hull` `is_stable` `equilibrium_reaction_energy_per_atom` `decomposes_to` `builder_meta` `nsites` `elements` `nelements` `composition` `composition_reduced` `formula_pretty` `formula_anonymous` `chemsys` `volume` `density` `density_atomic` `symmetry` `material_id` `deprecated` `deprecation_reasons` `last_updated` `origins` `warnings` `structure` `property_name` `task_ids` `has_props`
- `_all_fields` boolean — Include all fields.
- `license` 'BY-C' | 'BY-NC' | 'All', nullable — Query by license. Can be commercial or non-commercial, or both
- `_sort_fields` string, nullable — Comma delimited fields to sort with. Prefixing '-' to a field will force a sort in descending order.
- `batch_id` string, nullable — Query by batch identifier
- `batch_id_not_eq` string, nullable — Exclude batch identifier
- `batch_id_eq_any` string, nullable — Query by a comma-separated list of batch identifiers
- `batch_id_neq_any` string, nullable — Exclude a comma-separated list of batch identifiers
- `id_format` string, nullable — Optional. If set to 'legacy', MP identifier fields in the response are returned in the form 'mp-149'. If set to 'alpha', they are returned in the padded AlphaID form 'mp-aaaaaaft'. If omitted (or set to any other value), identifiers are returned in their stored form. This is a purely cosmetic transform; query inputs accept either shape regardless.

## Response `200`

Search for a SummaryDoc

- ResponseSummaryDoc
  - `data` SummaryDoc[], nullable — List of returned data
    - `phonon_IDs` object, nullable — Identfiers for phonon documents associated with this material.
    - `theoretical` boolean — Whether the material is theoretical.
    - `database_IDs` object, nullable — External database IDs corresponding to this material.
    - `possible_species` string[], nullable — Possible charged species in this material.
    - `weighted_surface_energy_EV_PER_ANG2` number, nullable — Weighted surface energy in eV/Ų.
    - `weighted_surface_energy` number, nullable — Weighted surface energy in J/m².
    - `weighted_work_function` number, nullable — Weighted work function in eV.
    - `surface_anisotropy` number, nullable — Surface energy anisotropy.
    - `shape_factor` number, nullable — Shape factor.
    - `has_reconstructed` boolean, nullable — Whether the material has any reconstructed surfaces.
    - `e_ij_max` number, nullable — Piezoelectric modulus.
    - `e_total` number, nullable — Total dielectric constant.
    - `e_ionic` number, nullable — Ionic contribution to dielectric constant.
    - `e_electronic` number, nullable — Electronic contribution to dielectric constant.
    - `n` number, nullable — Refractive index.
    - `bulk_modulus` object, nullable — Voigt, Reuss, and Voigt-Reuss-Hill averages of the bulk modulus in GPa.
    - `shear_modulus` object, nullable — Voigt, Reuss, and Voigt-Reuss-Hill averages of the shear modulus in GPa.
    - `universal_anisotropy` number, nullable — Elastic anisotropy.
    - `homogeneous_poisson` number, nullable — Poisson's ratio.
    - `is_magnetic` boolean, nullable — Whether the material is magnetic.
    - `ordering` string, nullable — Type of magnetic ordering.
    - `total_magnetization` number, nullable — Total magnetization in μB.
    - `total_magnetization_normalized_vol` number, nullable — Total magnetization normalized by volume in μB/ų.
    - `total_magnetization_normalized_formula_units` number, nullable — Total magnetization normalized by formula unit in μB/f.u. .
    - `num_magnetic_sites` integer, nullable — The number of magnetic sites.
    - `num_unique_magnetic_sites` integer, nullable — The number of unique magnetic sites.
    - `types_of_magnetic_species` string[], nullable — Magnetic species elements.
    - `dos` DosData
      - `task_id` unknown
      - `total` object, nullable — Total DOS summary data.
      - `elemental` object, nullable — Band structure summary data using the Hinuma et al. path convention.
      - `orbital` object, nullable — Band structure summary data using the Latimer-Munro path convention.
      - `magnetic_ordering` string, nullable — Magnetic ordering of the calculation.
    - `dos_energy_up` number, nullable — Spin-up DOS band gap in eV.
    - `dos_energy_down` number, nullable — Spin-down DOS band gap in eV.
    - `bandstructure` BandstructureData
      - `setyawan_curtarolo` BandStructureSummaryData — Schematize high-level band structure data for the API.
        - `band_gap` number, required — Band gap energy in eV.
        - `cbm` TypedBandDict — Type def for data stored for cbms or vbms
          - `band_index` object, required
          - `kpoint_index` integer[], required
          - `kpoint` TypedKpointDict, required
            - `@module` string, required
            - `@class` string, required
            - `lattice` MSONableTypedLatticeDict, required
              - …
            - `fcoords` number[], required
            - `ccoords` number[], required
            - `label` string, required
          - `energy` number, required
          - `projections` object, required
        - `vbm` TypedBandDict — Type def for data stored for cbms or vbms
          - `band_index` object, required
          - `kpoint_index` integer[], required
          - `kpoint` TypedKpointDict, required
            - `@module` string, required
            - `@class` string, required
            - `lattice` MSONableTypedLatticeDict, required
              - …
            - `fcoords` number[], required
            - `ccoords` number[], required
            - `label` string, required
          - `energy` number, required
          - `projections` object, required
        - `efermi` number, nullable — Fermi energy in eV.
        - `is_gap_direct` boolean, nullable — Whether the band gap is direct.
        - `is_metal` boolean, nullable — Whether the material is a metal.
        - `magnetic_ordering` string, nullable — Magnetic ordering of the calculation.
        - `task_id` unknown
        - `nbands` number, required — Number of bands.
        - `direct_gap` number, required — Direct gap energy in eV.
      - `hinuma` BandStructureSummaryData — Schematize high-level band structure data for the API.
        - `band_gap` number, required — Band gap energy in eV.
        - `cbm` TypedBandDict — Type def for data stored for cbms or vbms
          - `band_index` object, required
          - `kpoint_index` integer[], required
          - `kpoint` TypedKpointDict, required
            - `@module` string, required
            - `@class` string, required
            - `lattice` MSONableTypedLatticeDict, required
              - …
            - `fcoords` number[], required
            - `ccoords` number[], required
            - `label` string, required
          - `energy` number, required
          - `projections` object, required
        - `vbm` TypedBandDict — Type def for data stored for cbms or vbms
          - `band_index` object, required
          - `kpoint_index` integer[], required
          - `kpoint` TypedKpointDict, required
            - `@module` string, required
            - `@class` string, required
            - `lattice` MSONableTypedLatticeDict, required
              - …
            - `fcoords` number[], required
            - `ccoords` number[], required
            - `label` string, required
          - `energy` number, required
          - `projections` object, required
        - `efermi` number, nullable — Fermi energy in eV.
        - `is_gap_direct` boolean, nullable — Whether the band gap is direct.
        - `is_metal` boolean, nullable — Whether the material is a metal.
        - `magnetic_ordering` string, nullable — Magnetic ordering of the calculation.
        - `task_id` unknown
        - `nbands` number, required — Number of bands.
        - `direct_gap` number, required — Direct gap energy in eV.
      - `latimer_munro` BandStructureSummaryData — Schematize high-level band structure data for the API.
        - `band_gap` number, required — Band gap energy in eV.
        - `cbm` TypedBandDict — Type def for data stored for cbms or vbms
          - `band_index` object, required
          - `kpoint_index` integer[], required
          - `kpoint` TypedKpointDict, required
            - `@module` string, required
            - `@class` string, required
            - `lattice` MSONableTypedLatticeDict, required
              - …
            - `fcoords` number[], required
            - `ccoords` number[], required
            - `label` string, required
          - `energy` number, required
          - `projections` object, required
        - `vbm` TypedBandDict — Type def for data stored for cbms or vbms
          - `band_index` object, required
          - `kpoint_index` integer[], required
          - `kpoint` TypedKpointDict, required
            - `@module` string, required
            - `@class` string, required
            - `lattice` MSONableTypedLatticeDict, required
              - …
            - `fcoords` number[], required
            - `ccoords` number[], required
            - `label` string, required
          - `energy` number, required
          - `projections` object, required
        - `efermi` number, nullable — Fermi energy in eV.
        - `is_gap_direct` boolean, nullable — Whether the band gap is direct.
        - `is_metal` boolean, nullable — Whether the material is a metal.
        - `magnetic_ordering` string, nullable — Magnetic ordering of the calculation.
        - `task_id` unknown
        - `nbands` number, required — Number of bands.
        - `direct_gap` number, required — Direct gap energy in eV.
    - `band_gap` number, nullable — Band gap energy in eV.
    - `cbm` number, nullable — Conduction band minimum data.
    - `vbm` number, nullable — Valence band maximum data.
    - `efermi` number, nullable — Fermi energy in eV.
    - `is_gap_direct` boolean, nullable — Whether the band gap is direct.
    - `is_metal` boolean, nullable — Whether the material is a metal.
    - `grain_boundaries` GBSearchData[], nullable — List of grain boundary documents.
      - `sigma` integer, nullable — Sigma value of the boundary.
      - `type` string, nullable — Grain boundary type.
      - `gb_energy` number, nullable — Grain boundary energy in J/m^2.
      - `rotation_angle` number, nullable — Rotation angle in degrees.
    - `xas` XASSearchData[], nullable — List of xas documents.
      - `edge` string, nullable — The interaction edge for XAS
      - `absorbing_element` string, nullable — Absorbing element.
      - `spectrum_type` string, nullable — Type of XAS spectrum.
    - `uncorrected_energy_per_atom` number, nullable — The total DFT energy of this material per atom in eV/atom.
    - `energy_per_atom` number, nullable — The total corrected DFT energy of this material per atom in eV/atom.
    - `formation_energy_per_atom` number, nullable — The formation energy per atom in eV/atom.
    - `energy_above_hull` number, nullable — The energy above the hull in eV/Atom.
    - `is_stable` boolean — Flag for whether this material is on the hull and therefore stable.
    - `equilibrium_reaction_energy_per_atom` number, nullable — The reaction energy of a stable entry from the neighboring equilibrium stable materials in eV. Also known as the inverse distance to hull.
    - `decomposes_to` DecompositionProduct[], nullable — List of decomposition data for this material. Only valid for metastable or unstable material.
      - `material_id` unknown
      - `formula` string, nullable — The formula of the decomposed material this material decomposes to.
      - `amount` number, nullable — The amount of the decomposed material by formula units this material decomposes to.
    - `builder_meta` EmmetMeta — Default emmet metadata.
      - `emmet_version` string, nullable — The version of emmet this document was built with.
      - `pymatgen_version` string, nullable — The version of pymatgen this document was built with.
      - `run_id` string, nullable — The run id associated with this data build.
      - `batch_id` string, nullable — Identifier corresponding to the origin of this document's blessed task.
      - `database_version` string, nullable — The database version for the built data.
      - `build_date` string, date-time, nullable — The build date for this document.
      - `license` 'BY-C' | 'BY-NC', nullable — License for the data entry.
    - `nsites` integer, nullable — Total number of sites in the structure.
    - `elements` string[], nullable — List of elements in the material.
    - `nelements` integer, nullable — Number of elements.
    - `composition` object, nullable — Full composition for the material.
    - `composition_reduced` object, nullable — Simplified representation of the composition.
    - `formula_pretty` string, nullable — Cleaned representation of the formula.
    - `formula_anonymous` string, nullable — Anonymized representation of the formula.
    - `chemsys` string, nullable — Dash-separated string of elements in the material.
    - `volume` number, nullable — Total volume for this structure in ų.
    - `density` number, nullable — Density in g/cm³.
    - `density_atomic` number, nullable — The atomic packing density in ų/atom.
    - `symmetry` SymmetryData — Defines a symmetry data set for materials documents
      - `crystal_system` string, nullable — The crystal system for this lattice.
      - `symbol` string, nullable — The spacegroup symbol for the lattice.
      - `hall` string, nullable — Hall symbol for the lattice
      - `number` integer, nullable — The spacegroup number for the lattice.
      - `point_group` string, nullable — The point group for the lattice.
      - `symprec` number, nullable — The precision provided to spglib to determine the symmetry of this structure.
      - `angle_tolerance` number, nullable — Angle tolerance provided to spglib to determine the symmetry of this structure.
      - `version` string, nullable
    - `material_id` unknown
    - `deprecated` boolean — Whether this property document is deprecated.
    - `deprecation_reasons` string[], nullable — List of deprecation tags detailing why this document isn't valid.
    - `last_updated` string, date-time — Timestamp for the most recent calculation update for this property.
    - `origins` PropertyOrigin[], nullable — Dictionary for tracking the provenance of properties.
      - `name` string, required — The property name
      - `task_id` unknown, required
      - `last_updated` string, date-time — The timestamp when this calculation was last updated
    - `warnings` string[] — Any warnings related to this property.
    - `structure` TypedStructureDict, required — unresolved $ref
    - `property_name` string
    - `task_ids` unknown[] — List of Calculations IDs associated with this material.
      - unknown
    - `has_props` object, nullable — List of properties that are available for a given material.
  - `errors` Error[], nullable — Any errors on processing this query
    - `code` integer, required — The error code
    - `message` string, required — The description of the error
  - `meta` Meta — Meta information for the MAPI Response.
    - `api_version` string — A string containing the version of the Materials API implementation, e.g. v0.9.5
    - `time_stamp` string, date-time — A string containing the date and time at which the query was executed
    - `total_doc` integer, nullable — The total number of documents available for this query
    - `facet` object, nullable — A dictionary containing the facets available for this query

## Other responses

- `422` — Validation Error

## Changes

> 4 revisions in range; 1 could not be searched.

- **2026-07-31** `54f2f79ab4f8` — 1 info
  - the `api_version` response's property default value changed from `0.87.2.dev13+g62063a867` to `0.87.2.dev19+g3f2daf4f8` for the status `200`
- **2026-07-26** `9aac4fdf4081` — 1 info
  - the `api_version` response's property default value changed from `0.87.2.dev4+g6bd8ed856` to `0.87.2.dev13+g62063a867` for the status `200`

[Change history](https://skmtc.dev/materialsproject/apis/materials-project-api/changes/materials/summary/get.md)

---

[API](https://skmtc.dev/materialsproject/apis/materials-project-api.md) · [All operations](https://skmtc.dev/materialsproject/apis/materials-project-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/materialsproject/materials-project-api/revisions/70f72d0670df/schema)