---
updatedAt: 2026-07-29T18:40:23.000Z
---

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# Save details for a party

Creates or updates the signed-in user's saved name, tags, and custom fields for one party address.

# OpenAPI definition

```json
{
  "openapi": "3.0.4",
  "info": {
    "title": "Canton Data App API",
    "description": "Self-hosted API for the Noves Canton Data App. Each deployment exposes this API from the customer environment; requests are permission-aware and resolved against the connected Canton participant.",
    "version": "v4"
  },
  "paths": {
    "/api/v2/parties/{partyAddress}/metadata": {
      "put": {
        "tags": [
          "Party Metadata"
        ],
        "summary": "Save details for a party",
        "description": "Creates or updates the signed-in user's saved name, tags, and custom fields for one party address.",
        "parameters": [
          {
            "name": "partyAddress",
            "in": "path",
            "description": "Canton party identifier whose metadata is being accessed.",
            "required": true,
            "schema": {
              "type": "string"
            }
          },
          {
            "name": "jwt",
            "in": "header",
            "description": "JWT used to authenticate the owner of the saved party details.",
            "schema": {
              "type": "string"
            }
          },
          {
            "name": "jwt",
            "in": "query",
            "description": "Same JWT as the jwt header; use the header for normal clients.",
            "schema": {
              "type": "string"
            }
          },
          {
            "name": "nodeId",
            "in": "query",
            "description": "Configured validator-node identifier; defaults to the deployment default.",
            "schema": {
              "type": "string"
            }
          },
          {
            "name": "nodeId",
            "in": "header",
            "description": "Configured validator-node identifier alternative to the nodeId query parameter.",
            "schema": {
              "type": "string"
            }
          }
        ],
        "requestBody": {
          "content": {
            "application/json": {
              "schema": {
                "$ref": "#/components/schemas/CantonDataApp.Api.UpsertPartyMetadataRequest"
              }
            }
          }
        },
        "responses": {
          "200": {
            "description": "OK",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/CantonDataApp.Data.PartyMetadataEntry"
                }
              }
            }
          },
          "400": {
            "description": "Bad Request",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/CantonDataApp.Api.ApiErrorResponse"
                }
              }
            }
          },
          "500": {
            "description": "Unexpected server error",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/CantonDataApp.Api.ApiErrorResponse"
                }
              }
            }
          },
          "503": {
            "description": "Service is still starting",
            "content": {
              "application/json": {
                "schema": {
                  "oneOf": [
                    {
                      "$ref": "#/components/schemas/CantonDataApp.Database.StartupStatusResponse"
                    },
                    {
                      "$ref": "#/components/schemas/CantonDataApp.Api.QuarantinedNodeResponse"
                    }
                  ]
                }
              }
            }
          }
        }
      }
    }
  },
  "components": {
    "schemas": {
      "CantonDataApp.Api.ApiErrorResponse": {
        "type": "object",
        "properties": {
          "error": {
            "type": "string",
            "nullable": true
          }
        },
        "additionalProperties": false
      },
      "CantonDataApp.Api.QuarantinedNodeResponse": {
        "type": "object",
        "properties": {
          "error": {
            "type": "string",
            "nullable": true
          },
          "nodeId": {
            "type": "string",
            "nullable": true
          },
          "status": {
            "type": "string",
            "nullable": true
          },
          "network": {
            "type": "string",
            "nullable": true
          },
          "detail": {
            "type": "string",
            "nullable": true
          }
        },
        "additionalProperties": false
      },
      "CantonDataApp.Api.UpsertPartyMetadataRequest": {
        "type": "object",
        "properties": {
          "displayName": {
            "type": "string",
            "nullable": true
          },
          "tags": {
            "type": "array",
            "items": {
              "type": "string"
            },
            "nullable": true
          },
          "metadata": {
            "type": "object",
            "additionalProperties": {
              "$ref": "#/components/schemas/System.Text.Json.Nodes.JsonNode"
            },
            "nullable": true
          }
        },
        "additionalProperties": false
      },
      "CantonDataApp.Data.PartyMetadataEntry": {
        "type": "object",
        "properties": {
          "partyAddress": {
            "type": "string",
            "nullable": true
          },
          "displayName": {
            "type": "string",
            "nullable": true
          },
          "tags": {
            "type": "array",
            "items": {
              "type": "string"
            },
            "nullable": true
          },
          "metadata": {
            "$ref": "#/components/schemas/System.Text.Json.Nodes.JsonNode"
          },
          "source": {
            "type": "string",
            "nullable": true
          },
          "updatedAt": {
            "type": "string",
            "nullable": true
          }
        },
        "additionalProperties": false
      },
      "CantonDataApp.Database.ReplayNodeStatus": {
        "type": "object",
        "properties": {
          "nodeId": {
            "type": "string",
            "nullable": true
          },
          "currentOffset": {
            "type": "integer",
            "format": "int64"
          },
          "targetOffset": {
            "type": "integer",
            "format": "int64"
          },
          "status": {
            "type": "string",
            "nullable": true
          }
        },
        "additionalProperties": false
      },
      "CantonDataApp.Database.StartupReplayResponse": {
        "type": "object",
        "properties": {
          "nodes": {
            "type": "array",
            "items": {
              "$ref": "#/components/schemas/CantonDataApp.Database.ReplayNodeStatus"
            },
            "nullable": true
          }
        },
        "additionalProperties": false
      },
      "CantonDataApp.Database.StartupStatusResponse": {
        "type": "object",
        "properties": {
          "status": {
            "type": "string",
            "nullable": true
          },
          "phase": {
            "type": "string",
            "nullable": true
          },
          "phaseNumber": {
            "type": "integer",
            "format": "int32"
          },
          "totalPhases": {
            "type": "integer",
            "format": "int32"
          },
          "startedAt": {
            "type": "string",
            "nullable": true
          },
          "elapsedSeconds": {
            "type": "integer",
            "format": "int32"
          },
          "error": {
            "type": "string",
            "nullable": true
          },
          "schemaVersion": {
            "type": "string",
            "nullable": true
          },
          "targetSchemaVersion": {
            "type": "string",
            "nullable": true
          },
          "bootstrapSource": {
            "type": "string",
            "nullable": true
          },
          "bootstrapVersion": {
            "type": "string",
            "nullable": true
          },
          "pendingMigrations": {
            "type": "integer",
            "format": "int32"
          },
          "lastMigrationDurationMs": {
            "type": "integer",
            "format": "int64",
            "nullable": true
          },
          "dataMigrations": {
            "type": "array",
            "items": {},
            "nullable": true
          },
          "replay": {
            "$ref": "#/components/schemas/CantonDataApp.Database.StartupReplayResponse"
          }
        },
        "additionalProperties": false
      },
      "System.Text.Json.Nodes.JsonNode": {
        "type": "object",
        "properties": {
          "options": {
            "$ref": "#/components/schemas/System.Text.Json.Nodes.JsonNodeOptions"
          },
          "parent": {
            "$ref": "#/components/schemas/System.Text.Json.Nodes.JsonNode"
          },
          "root": {
            "$ref": "#/components/schemas/System.Text.Json.Nodes.JsonNode"
          }
        },
        "additionalProperties": false
      },
      "System.Text.Json.Nodes.JsonNodeOptions": {
        "type": "object",
        "properties": {
          "propertyNameCaseInsensitive": {
            "type": "boolean"
          }
        },
        "additionalProperties": false
      }
    }
  },
  "tags": [
    {
      "name": "Party Metadata"
    }
  ]
}
```