naftiko: 1.0.0-alpha2 info: label: Materials Project API — Materials description: 'Materials Project API — Materials. 4 operations. Lead operation: Get MaterialsDoc documents. Self-contained Naftiko capability covering one Materials Project business surface.' tags: - Materials Project - Materials created: '2026-05-19' modified: '2026-05-19' binds: - namespace: env keys: MATERIALS_PROJECT_API_KEY: MATERIALS_PROJECT_API_KEY capability: consumes: - type: http namespace: materials-project-materials baseUri: '' description: Materials Project API — Materials business capability. Self-contained, no shared references. resources: - name: materials-core path: /materials/core/ operations: - name: searchmaterialscoreget method: GET description: Get MaterialsDoc documents outputRawFormat: json outputParameters: - name: result type: object value: $. inputParameters: - name: material_ids in: query type: string description: Comma-separated list of material_id values to query on - name: formula in: query type: string description: 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 pr - name: chemsys in: query type: string description: A comma delimited string list of chemical systems. Wildcards for unknown elements only supported for single chemsys queries - name: elements in: query type: string description: Query by elements in the material composition as a comma-separated list - name: exclude_elements in: query type: string description: Query by excluded elements in the material composition as a comma-separated list - name: task_ids in: query type: string description: Comma-separated list of task_ids to query on - name: crystal_system in: query type: string description: Crystal system of the material. If a comma-separated string, will query by multiple crystal systems. - name: spacegroup_number in: query type: string description: Space group number of the material. If a comma-separated string, will query by multiple space group numbers. - name: spacegroup_symbol in: query type: string description: Space group symbol of the material. If a comma-separated string, will query by multiple space group numbers. - name: deprecated in: query type: string description: Whether the material is marked as deprecated - name: nsites_max in: query type: string description: Query for maximum value of nsites - name: nsites_min in: query type: string description: Query for minimum value of nsites - name: nsites in: query type: string description: Query for nsites being equal to an exact value - name: nsites_not_eq in: query type: string description: Query for nsites being not equal to an exact value - name: nsites_eq_any in: query type: string description: Query for nsites being any of these values. Provide a comma separated list. - name: nsites_neq_any in: query type: string description: Query for nsites being not any of these values. Provide a comma separated list. - name: nelements_max in: query type: string description: Query for maximum value of nelements - name: nelements_min in: query type: string description: Query for minimum value of nelements - name: nelements in: query type: string description: Query for nelements being equal to an exact value - name: nelements_not_eq in: query type: string description: Query for nelements being not equal to an exact value - name: nelements_eq_any in: query type: string description: Query for nelements being any of these values. Provide a comma separated list. - name: nelements_neq_any in: query type: string description: Query for nelements being not any of these values. Provide a comma separated list. - name: volume_max in: query type: string description: Query for maximum value of volume - name: volume_min in: query type: string description: Query for minimum value of volume - name: density_max in: query type: string description: Query for maximum value of density - name: density_min in: query type: string description: Query for minimum value of density - name: density_atomic_max in: query type: string description: Query for maximum value of density_atomic - name: density_atomic_min in: query type: string description: Query for minimum value of density_atomic - name: _page in: query type: integer description: Page number to request (takes precedent over _limit and _skip). - name: _per_page in: query type: integer description: Number of entries to show per page (takes precedent over _limit and _skip). Limited to 1000. - name: _skip in: query type: integer description: Number of entries to skip in the search. - name: _limit in: query type: integer description: Max number of entries to return in a single query. Limited to 1000. - name: _fields in: query type: string description: 'Fields to project from MaterialsDoc as a list of comma separated strings. Fields include: `builder_meta` `nsites` `elements` `nelements` `com' - name: _all_fields in: query type: boolean description: Include all fields. - name: license in: query type: string description: Query by license. Can be commercial or non-commercial, or both - name: batch_id in: query type: string description: Query by batch identifier - name: batch_id_not_eq in: query type: string description: Exclude batch identifier - name: batch_id_eq_any in: query type: string description: Query by a comma-separated list of batch identifiers - name: batch_id_neq_any in: query type: string description: Exclude a comma-separated list of batch identifiers - name: materials-core-blessed_tasks path: /materials/core/blessed_tasks/ operations: - name: searchmaterialscoreblessedtasksget method: GET description: Get MaterialsDoc documents outputRawFormat: json outputParameters: - name: result type: object value: $. inputParameters: - name: run_type in: query type: string description: Calculation run type of blessed task data required: true - name: energy_min in: query type: string description: Minimum total uncorrected DFT energy in eV/atom - name: energy_max in: query type: string description: Maximum total uncorrected DFT energy in eV/atom - name: material_ids in: query type: string description: Comma-separated list of material_id values to query on - name: formula in: query type: string description: 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 pr - name: chemsys in: query type: string description: A comma delimited string list of chemical systems. Wildcards for unknown elements only supported for single chemsys queries - name: elements in: query type: string description: Query by elements in the material composition as a comma-separated list - name: exclude_elements in: query type: string description: Query by excluded elements in the material composition as a comma-separated list - name: task_ids in: query type: string description: Comma-separated list of task_ids to query on - name: deprecated in: query type: string description: Whether the material is marked as deprecated - name: nsites_max in: query type: string description: Query for maximum value of nsites - name: nsites_min in: query type: string description: Query for minimum value of nsites - name: nsites in: query type: string description: Query for nsites being equal to an exact value - name: nsites_not_eq in: query type: string description: Query for nsites being not equal to an exact value - name: nsites_eq_any in: query type: string description: Query for nsites being any of these values. Provide a comma separated list. - name: nsites_neq_any in: query type: string description: Query for nsites being not any of these values. Provide a comma separated list. - name: nelements_max in: query type: string description: Query for maximum value of nelements - name: nelements_min in: query type: string description: Query for minimum value of nelements - name: nelements in: query type: string description: Query for nelements being equal to an exact value - name: nelements_not_eq in: query type: string description: Query for nelements being not equal to an exact value - name: nelements_eq_any in: query type: string description: Query for nelements being any of these values. Provide a comma separated list. - name: nelements_neq_any in: query type: string description: Query for nelements being not any of these values. Provide a comma separated list. - name: volume_max in: query type: string description: Query for maximum value of volume - name: volume_min in: query type: string description: Query for minimum value of volume - name: density_max in: query type: string description: Query for maximum value of density - name: density_min in: query type: string description: Query for minimum value of density - name: density_atomic_max in: query type: string description: Query for maximum value of density_atomic - name: density_atomic_min in: query type: string description: Query for minimum value of density_atomic - name: _page in: query type: integer description: Page number to request (takes precedent over _limit and _skip). - name: _per_page in: query type: integer description: Number of entries to show per page (takes precedent over _limit and _skip). Limited to 1000. - name: _skip in: query type: integer description: Number of entries to skip in the search. - name: _limit in: query type: integer description: Max number of entries to return in a single query. Limited to 1000. - name: license in: query type: string description: Query by license. Can be commercial or non-commercial, or both - name: _fields in: query type: string description: 'Fields to project from MaterialsDoc as a list of comma separated strings. Fields include: `builder_meta` `nsites` `elements` `nelements` `com' - name: _all_fields in: query type: boolean description: Include all fields. - name: materials-core-find_structure path: /materials/core/find_structure/ operations: - name: searchmaterialscorefindstructurepost method: POST description: Post FindStructure documents outputRawFormat: json outputParameters: - name: result type: object value: $. inputParameters: - name: ltol in: query type: number description: Fractional length tolerance. Default is 0.2. - name: stol in: query type: number description: Site tolerance. Defined as the fraction of the average free length per atom := ( V / Nsites ) ** (1/3). Default is 0.3. - name: angle_tol in: query type: number description: Angle tolerance in degrees. Default is 5 degrees. - name: _limit in: query type: integer description: Maximum number of matches to show. Defaults to 1, only showing the best match. - name: body in: body type: object description: Request body (JSON). required: true - name: materials-core-formula_autocomplete path: /materials/core/formula_autocomplete/ operations: - name: searchmaterialscoreformulaautocompleteget method: GET description: Get FormulaAutocomplete documents outputRawFormat: json outputParameters: - name: result type: object value: $. inputParameters: - name: formula in: query type: string description: Human readable chemical formula. required: true - name: limit in: query type: integer description: Maximum number of matches to show. Defaults to 10. authentication: type: apikey key: X-API-KEY value: '{{env.MATERIALS_PROJECT_API_KEY}}' placement: header exposes: - type: rest namespace: materials-project-materials-rest port: 8080 description: REST adapter for Materials Project API — Materials. One Spectral-compliant resource per consumed operation, prefixed with /v1. resources: - path: /v1/materials/core name: materials-core description: REST surface for materials-core. operations: - method: GET name: searchmaterialscoreget description: Get MaterialsDoc documents call: materials-project-materials.searchmaterialscoreget with: material_ids: rest.material_ids formula: rest.formula chemsys: rest.chemsys elements: rest.elements exclude_elements: rest.exclude_elements task_ids: rest.task_ids crystal_system: rest.crystal_system spacegroup_number: rest.spacegroup_number spacegroup_symbol: rest.spacegroup_symbol deprecated: rest.deprecated nsites_max: rest.nsites_max nsites_min: rest.nsites_min nsites: rest.nsites nsites_not_eq: rest.nsites_not_eq nsites_eq_any: rest.nsites_eq_any nsites_neq_any: rest.nsites_neq_any nelements_max: rest.nelements_max nelements_min: rest.nelements_min nelements: rest.nelements nelements_not_eq: rest.nelements_not_eq nelements_eq_any: rest.nelements_eq_any nelements_neq_any: rest.nelements_neq_any volume_max: rest.volume_max volume_min: rest.volume_min density_max: rest.density_max density_min: rest.density_min density_atomic_max: rest.density_atomic_max density_atomic_min: rest.density_atomic_min _page: rest._page _per_page: rest._per_page _skip: rest._skip _limit: rest._limit _fields: rest._fields _all_fields: rest._all_fields license: rest.license batch_id: rest.batch_id batch_id_not_eq: rest.batch_id_not_eq batch_id_eq_any: rest.batch_id_eq_any batch_id_neq_any: rest.batch_id_neq_any outputParameters: - type: object mapping: $. - path: /v1/materials/core/blessed-tasks name: materials-core-blessed-tasks description: REST surface for materials-core-blessed_tasks. operations: - method: GET name: searchmaterialscoreblessedtasksget description: Get MaterialsDoc documents call: materials-project-materials.searchmaterialscoreblessedtasksget with: run_type: rest.run_type energy_min: rest.energy_min energy_max: rest.energy_max material_ids: rest.material_ids formula: rest.formula chemsys: rest.chemsys elements: rest.elements exclude_elements: rest.exclude_elements task_ids: rest.task_ids deprecated: rest.deprecated nsites_max: rest.nsites_max nsites_min: rest.nsites_min nsites: rest.nsites nsites_not_eq: rest.nsites_not_eq nsites_eq_any: rest.nsites_eq_any nsites_neq_any: rest.nsites_neq_any nelements_max: rest.nelements_max nelements_min: rest.nelements_min nelements: rest.nelements nelements_not_eq: rest.nelements_not_eq nelements_eq_any: rest.nelements_eq_any nelements_neq_any: rest.nelements_neq_any volume_max: rest.volume_max volume_min: rest.volume_min density_max: rest.density_max density_min: rest.density_min density_atomic_max: rest.density_atomic_max density_atomic_min: rest.density_atomic_min _page: rest._page _per_page: rest._per_page _skip: rest._skip _limit: rest._limit license: rest.license _fields: rest._fields _all_fields: rest._all_fields outputParameters: - type: object mapping: $. - path: /v1/materials/core/find-structure name: materials-core-find-structure description: REST surface for materials-core-find_structure. operations: - method: POST name: searchmaterialscorefindstructurepost description: Post FindStructure documents call: materials-project-materials.searchmaterialscorefindstructurepost with: ltol: rest.ltol stol: rest.stol angle_tol: rest.angle_tol _limit: rest._limit body: rest.body outputParameters: - type: object mapping: $. - path: /v1/materials/core/formula-autocomplete name: materials-core-formula-autocomplete description: REST surface for materials-core-formula_autocomplete. operations: - method: GET name: searchmaterialscoreformulaautocompleteget description: Get FormulaAutocomplete documents call: materials-project-materials.searchmaterialscoreformulaautocompleteget with: formula: rest.formula limit: rest.limit outputParameters: - type: object mapping: $. - type: mcp namespace: materials-project-materials-mcp port: 9090 transport: http description: MCP adapter for Materials Project API — Materials. One tool per consumed operation, routed inline through this capability's consumes block. tools: - name: get-materialsdoc-documents description: Get MaterialsDoc documents hints: readOnly: true destructive: false idempotent: true call: materials-project-materials.searchmaterialscoreget with: material_ids: tools.material_ids formula: tools.formula chemsys: tools.chemsys elements: tools.elements exclude_elements: tools.exclude_elements task_ids: tools.task_ids crystal_system: tools.crystal_system spacegroup_number: tools.spacegroup_number spacegroup_symbol: tools.spacegroup_symbol deprecated: tools.deprecated nsites_max: tools.nsites_max nsites_min: tools.nsites_min nsites: tools.nsites nsites_not_eq: tools.nsites_not_eq nsites_eq_any: tools.nsites_eq_any nsites_neq_any: tools.nsites_neq_any nelements_max: tools.nelements_max nelements_min: tools.nelements_min nelements: tools.nelements nelements_not_eq: tools.nelements_not_eq nelements_eq_any: tools.nelements_eq_any nelements_neq_any: tools.nelements_neq_any volume_max: tools.volume_max volume_min: tools.volume_min density_max: tools.density_max density_min: tools.density_min density_atomic_max: tools.density_atomic_max density_atomic_min: tools.density_atomic_min _page: tools._page _per_page: tools._per_page _skip: tools._skip _limit: tools._limit _fields: tools._fields _all_fields: tools._all_fields license: tools.license batch_id: tools.batch_id batch_id_not_eq: tools.batch_id_not_eq batch_id_eq_any: tools.batch_id_eq_any batch_id_neq_any: tools.batch_id_neq_any outputParameters: - type: object mapping: $. - name: get-materialsdoc-documents-2 description: Get MaterialsDoc documents hints: readOnly: true destructive: false idempotent: true call: materials-project-materials.searchmaterialscoreblessedtasksget with: run_type: tools.run_type energy_min: tools.energy_min energy_max: tools.energy_max material_ids: tools.material_ids formula: tools.formula chemsys: tools.chemsys elements: tools.elements exclude_elements: tools.exclude_elements task_ids: tools.task_ids deprecated: tools.deprecated nsites_max: tools.nsites_max nsites_min: tools.nsites_min nsites: tools.nsites nsites_not_eq: tools.nsites_not_eq nsites_eq_any: tools.nsites_eq_any nsites_neq_any: tools.nsites_neq_any nelements_max: tools.nelements_max nelements_min: tools.nelements_min nelements: tools.nelements nelements_not_eq: tools.nelements_not_eq nelements_eq_any: tools.nelements_eq_any nelements_neq_any: tools.nelements_neq_any volume_max: tools.volume_max volume_min: tools.volume_min density_max: tools.density_max density_min: tools.density_min density_atomic_max: tools.density_atomic_max density_atomic_min: tools.density_atomic_min _page: tools._page _per_page: tools._per_page _skip: tools._skip _limit: tools._limit license: tools.license _fields: tools._fields _all_fields: tools._all_fields outputParameters: - type: object mapping: $. - name: post-findstructure-documents description: Post FindStructure documents hints: readOnly: false destructive: false idempotent: false call: materials-project-materials.searchmaterialscorefindstructurepost with: ltol: tools.ltol stol: tools.stol angle_tol: tools.angle_tol _limit: tools._limit body: tools.body outputParameters: - type: object mapping: $. - name: get-formulaautocomplete-documents description: Get FormulaAutocomplete documents hints: readOnly: true destructive: false idempotent: true call: materials-project-materials.searchmaterialscoreformulaautocompleteget with: formula: tools.formula limit: tools.limit outputParameters: - type: object mapping: $.