openapi: 3.1.0 info: title: Apache Solr REST Collections API version: v2 summary: HTTP/REST API for Apache Solr v2 covering collections, cores, schema, configuration, update and query handlers. description: 'Apache Solr exposes a REST API under /api (v2) on each Solr node. This specification covers collection lifecycle, core administration, per-collection schema/config/update operations, and the legacy Collections admin handler still supported under /solr/admin/collections. Authentication is pluggable (Basic, JWT, Certificate). Where security is enabled, Basic authentication is the most common configuration. ' contact: name: Apache Solr Reference Guide url: https://solr.apache.org/guide/ servers: - url: http://localhost:8983 description: Default Solr node (replace host/port for your deployment) security: - basicAuth: [] tags: - name: Collections description: Cluster-level collection management paths: /api/collections: get: tags: - Collections summary: List collections operationId: listCollections responses: '200': description: Collection list post: tags: - Collections summary: Create, alias, backup, or restore a collection operationId: createCollection responses: '200': description: Operation accepted /api/c/{collection}: parameters: - $ref: '#/components/parameters/Collection' post: tags: - Collections summary: Modify collection attributes and replica settings operationId: modifyCollection responses: '200': description: Collection updated components: parameters: Collection: name: collection in: path required: true schema: type: string securitySchemes: basicAuth: type: http scheme: basic description: HTTP Basic Authentication (Solr Basic Auth plugin). JWT and certificate auth plugins are also supported.