# HugeGraph RESTful API LLMS index: [llms.txt](/llms.txt) --- > ⚠️ **Version compatibility notes** > > - HugeGraph 1.7.0+ introduces graphspaces, and REST paths follow `/graphspaces/{graphspace}/graphs/{graph}`. > - HugeGraph 1.5.x and earlier still rely on the legacy `/graphs/{graph}` path, and the create/clone graph APIs require `Content-Type: text/plain`; 1.7.0+ expects JSON bodies. > - The default graphspace name is `DEFAULT`, which you can use directly if you do not need multi-tenant isolation. > - **Note**: Before version 1.5.0, the format of ids such as group/target was similar to -69:grant. After version 1.7.0, the id and name were consistent, such as admin [HugeGraph 1.5.x RESTful API](https://github.com/apache/hugegraph-doc/tree/release-1.5.0) Besides the documentation below, you can also open `swagger-ui` at `localhost:8080/swagger-ui/index.html` to explore the RESTful API. [Here is an example](/docs/quickstart/hugegraph/hugegraph-server#swaggerui-example) [comment]: <> (- Graph Schema) [comment]: <> ( - [Schema](restful-api/schema.md)) [comment]: <> ( - [PropertyKey](restful-api/propertykey.md)) [comment]: <> ( - [VertexLabel](restful-api/vertexlabel.md)) [comment]: <> ( - [EdgeLabel](restful-api/edgelabel.md)) [comment]: <> ( - [IndexLabel](restful-api/indexlabel.md)) [comment]: <> ( - [Rebuild](restful-api/rebuild.md)) [comment]: <> (- Graph Vertex & Edge) [comment]: <> ( - [Vertex](restful-api/vertex.md)) [comment]: <> ( - [Edge](restful-api/edge.md)) [comment]: <> (- [Traverser](restful-api/traverser.md)) [comment]: <> (- [Rank](restful-api/rank.md)) [comment]: <> (- [Variable](restful-api/variable.md)) [comment]: <> (- [Graphs](restful-api/graphs.md)) [comment]: <> (- [Task](restful-api/task.md)) [comment]: <> (- [Gremlin](restful-api/gremlin.md)) [comment]: <> (- [Cypher](restful-api/cypher.md)) [comment]: <> (- [Authentication](restful-api/auth.md)) [comment]: <> (- [Metrics](restful-api/metrics.md)) [comment]: <> (- [Other](restful-api/other.md)) --- Section pages: - [Graphspace API](/docs/clients/restful-api/graphspace/): Graphspace REST API: Multi-tenancy and resource isolation for creating, viewing, updating, and deleting graph spaces with prerequisites and constraints. - [Schema API](/docs/clients/restful-api/schema/): Schema REST API: Query the complete schema definition of a graph, including property keys, vertex labels, edge labels, and index labels. - [PropertyKey API](/docs/clients/restful-api/propertykey/): PropertyKey REST API: Define data types and cardinality constraints for all properties in the graph, serving as fundamental schema elements. - [VertexLabel API](/docs/clients/restful-api/vertexlabel/): VertexLabel REST API: Define vertex types, ID strategies, and associated properties that determine vertex structure and constraints. - [EdgeLabel API](/docs/clients/restful-api/edgelabel/): EdgeLabel REST API: Define edge types and relationship constraints between source and target vertices to construct graph connection rules. - [IndexLabel API](/docs/clients/restful-api/indexlabel/): IndexLabel REST API: Create indexes on vertex and edge properties to accelerate property-based queries and filtering operations. - [Rebuild API](/docs/clients/restful-api/rebuild/): Rebuild REST API: Rebuild graph schema indexes to ensure consistency between index data and graph data. - [Vertex API](/docs/clients/restful-api/vertex/): Vertex REST API: Create, query, update, and delete vertex data in the graph with support for batch operations and conditional filtering. - [Edge API](/docs/clients/restful-api/edge/): Edge REST API: Create, query, update, and delete relationship data between vertices with support for batch operations and directional queries. - [Traverser API](/docs/clients/restful-api/traverser/): Traverser REST API: Execute complex graph algorithms and path queries including shortest path, k-neighbors, similarity computation, and advanced analytics. - [Rank API](/docs/clients/restful-api/rank/): Rank REST API: Execute graph node ranking algorithms such as PageRank and Personalized PageRank for centrality analysis. - [Variable API](/docs/clients/restful-api/variable/): Variable REST API: Store and manage key-value pairs as global variables for graph-level configuration and state management. - [Graphs API](/docs/clients/restful-api/graphs/): Graphs REST API: Manage graph instance lifecycle including creating, querying, cloning, clearing, and deleting graph databases. - [Task API](/docs/clients/restful-api/task/): Task REST API: Query and manage asynchronous task execution status for long-running operations like index rebuilding and graph traversals. - [Gremlin API](/docs/clients/restful-api/gremlin/): Gremlin REST API: Execute Gremlin graph traversal language scripts via HTTP interface. - [Cypher API](/docs/clients/restful-api/cypher/): Cypher REST API: Execute OpenCypher declarative graph query language via HTTP interface. - [Authentication API](/docs/clients/restful-api/auth/): Authentication REST API: Manage users, roles, permissions, and access control to implement fine-grained graph data security. - [Metrics API](/docs/clients/restful-api/metrics/): Metrics REST API: Retrieve runtime performance metrics, statistics, and health status data of the system. - [Other API](/docs/clients/restful-api/other/): Other REST API: Provide auxiliary functions such as system version query and API version information.