naftiko: 1.0.0-alpha2 info: label: Materials Project API — Materials Chemical Environment description: 'Materials Project API — Materials Chemical Environment. 1 operations. Lead operation: Get ChemEnvDoc documents. Self-contained Naftiko capability covering one Materials Project business surface.' tags: - Materials Project - Materials Chemical Environment 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-chemical-environment baseUri: '' description: Materials Project API — Materials Chemical Environment business capability. Self-contained, no shared references. resources: - name: materials-chemenv path: /materials/chemenv/ operations: - name: searchmaterialschemenvget method: GET description: Get ChemEnvDoc 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: chemenv_iucr in: query type: string description: A comma delimited string list of unique (cationic) species in IUCR format. - name: chemenv_iupac in: query type: string description: A comma delimited string list of unique (cationic) species in IUPAC format. - name: chemenv_name in: query type: string description: A comma delimited string list of coordination environment descriptions for unique (cationic) species. - name: chemenv_symbol in: query type: string description: A comma delimited string list of ChemEnv symbols for unique (cationic) species in the structure. - name: species in: query type: string description: A comma delimited string list of unique (cationic) species in the structure. - name: csm_min in: query type: string description: Minimum value of the continous symmetry measure for any site. - name: csm_max in: query type: string description: Maximum value of the continous symmetry measure for any site. - 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: 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 ChemEnvDoc as a list of comma separated strings. Fields include: `builder_meta` `nsites` `elements` `nelements` `compo' - name: _all_fields in: query type: boolean description: Include all fields. authentication: type: apikey key: X-API-KEY value: '{{env.MATERIALS_PROJECT_API_KEY}}' placement: header exposes: - type: rest namespace: materials-project-materials-chemical-environment-rest port: 8080 description: REST adapter for Materials Project API — Materials Chemical Environment. One Spectral-compliant resource per consumed operation, prefixed with /v1. resources: - path: /v1/materials/chemenv name: materials-chemenv description: REST surface for materials-chemenv. operations: - method: GET name: searchmaterialschemenvget description: Get ChemEnvDoc documents call: materials-project-materials-chemical-environment.searchmaterialschemenvget with: material_ids: rest.material_ids chemenv_iucr: rest.chemenv_iucr chemenv_iupac: rest.chemenv_iupac chemenv_name: rest.chemenv_name chemenv_symbol: rest.chemenv_symbol species: rest.species csm_min: rest.csm_min csm_max: rest.csm_max elements: rest.elements exclude_elements: rest.exclude_elements 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 outputParameters: - type: object mapping: $. - type: mcp namespace: materials-project-materials-chemical-environment-mcp port: 9090 transport: http description: MCP adapter for Materials Project API — Materials Chemical Environment. One tool per consumed operation, routed inline through this capability's consumes block. tools: - name: get-chemenvdoc-documents description: Get ChemEnvDoc documents hints: readOnly: true destructive: false idempotent: true call: materials-project-materials-chemical-environment.searchmaterialschemenvget with: material_ids: tools.material_ids chemenv_iucr: tools.chemenv_iucr chemenv_iupac: tools.chemenv_iupac chemenv_name: tools.chemenv_name chemenv_symbol: tools.chemenv_symbol species: tools.species csm_min: tools.csm_min csm_max: tools.csm_max elements: tools.elements exclude_elements: tools.exclude_elements 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 outputParameters: - type: object mapping: $.