hugegraph-schema-designer

# HugeGraph Schema Designer ## Tool Routes | Goal | Tool | | --- | --- | | Inspect current schema | `inspect_graph_tool(include_raw_schema=true)` | | Design schema operations | `design_schema_tool(operations?)` | | Validate schema operations | `apply_schema_tool(mode="validate", operations)` | | Dry-run schema operations | `apply_schema_tool(mode="dry_run", operations)` | | Execute real schema apply | `confirm_write_tool(plan_id)` in default `v2_core`, one supported schema create per plan | | Delete or roll back schema | No V1 stable tool | The default `v2_core` toolset permits confirmed apply only for `create_property_key`, `create_vertex_label`, and `create_edge_label`. In `HUGEGRAPH_MCP_TOOLSET=v1`, real schema apply remains disabled. Review the dry-run response before applying it. Confirm only a returned, confirmable `plan_id` with `confirm_write_tool(plan_id)`, then query `get_write_status_tool(plan_id)`. Schema create operations use a closed field contract. Property keys accept `data_type`, `cardinality`, `aggregate_type`, and `user_data`; vertex labels accept `id_strategy`, `properties`, `primary_keys`, `nullable_keys`, `index_labels`, `enable_label_index`, and `user_data`; edge labels accept `source_label`, `target_label`, `properties`, `nullable_keys`, `sort_keys`, `frequency`, `enable_label_index`, and `user_data`. Unsupported fields, including `ttl*`, are rejected during validation instead of being silently dropped. Supported fields are forwarded and checked by a live-schema post-read. ## Order ```text inspect_graph_tool -> design_schema_tool -> apply_schema_tool(mode="validate") -> apply_schema_tool(mode="dry_run") -> review operations and preview -> confirm_write_tool(plan_id) -> get_write_status_tool(plan_id) ``` Structured query and plan lifecycle tools require the default `v2_core` toolset. For a `v1` deployment, enable `HUGEGRAPH_MCP_TOOLSET=v2_core` and restart before using them.