# Get reusable block

`reusable_blocks.get`

Read one reusable block by its portable asset key from the selected common or Provider library, including its complete root block document. First call reusable_blocks.list_support_library, then pass an exact returned asset_key with the same owner selectors. This read does not edit definitions that use the block.

[Reusable blocks guide](https://docs.levr.ai/mcp/resources/reusable_blocks.md)

Availability depends on live discovery and your access to the record. Do not infer MCP calls from REST paths.

Operation: read. Required OAuth scopes: mcp.

## Input schema

```json
{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "additionalProperties": false,
  "properties": {
    "asset_key": {
      "maxLength": 512,
      "minLength": 1,
      "type": "string"
    },
    "owner_scope": {
      "description": "Use common for Levr-managed content, or provider for one Provider-owned library.",
      "enum": [
        "common",
        "provider"
      ],
      "type": "string"
    },
    "provider_profile_id": {
      "anyOf": [
        {
          "description": "Required for provider-owned content. Copy provider_slug exactly from providers.list; named slugs are valid.",
          "maxLength": 255,
          "minLength": 1,
          "type": "string"
        },
        {
          "type": "null"
        }
      ],
      "description": "Required for provider-owned content. Copy provider_slug exactly from providers.list; named slugs are valid."
    }
  },
  "required": [
    "owner_scope",
    "asset_key"
  ],
  "type": "object"
}
```

## Output schema

```json
{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "additionalProperties": false,
  "oneOf": [
    {
      "not": {
        "required": [
          "error"
        ]
      },
      "properties": {
        "ok": {
          "const": true
        }
      },
      "required": [
        "data"
      ]
    },
    {
      "not": {
        "required": [
          "data"
        ]
      },
      "properties": {
        "ok": {
          "const": false
        }
      },
      "required": [
        "error"
      ]
    }
  ],
  "properties": {
    "data": {
      "additionalProperties": false,
      "properties": {
        "reusable_block": {
          "additionalProperties": false,
          "properties": {
            "asset_key": {
              "type": "string"
            },
            "block_kind": {
              "type": "string"
            },
            "created_at": {
              "format": "date-time",
              "type": "string"
            },
            "frontend_link": {
              "format": "uri",
              "type": "string"
            },
            "library_search_terms": {
              "items": {
                "type": "string"
              },
              "type": "array"
            },
            "name": {
              "type": "string"
            },
            "owner": {
              "additionalProperties": false,
              "properties": {
                "provider_name": {
                  "anyOf": [
                    {
                      "type": "string"
                    },
                    {
                      "type": "null"
                    }
                  ]
                },
                "provider_profile_id": {
                  "anyOf": [
                    {
                      "description": "Stable public identifier for the referenced resource.",
                      "maxLength": 255,
                      "minLength": 1,
                      "type": "string"
                    },
                    {
                      "type": "null"
                    }
                  ],
                  "description": "Stable public identifier for the referenced resource."
                },
                "scope": {
                  "description": "Use common for Levr-managed content, or provider for one Provider-owned library.",
                  "enum": [
                    "common",
                    "provider"
                  ],
                  "type": "string"
                }
              },
              "required": [
                "scope",
                "provider_profile_id",
                "provider_name"
              ],
              "type": "object"
            },
            "root_block": {
              "description": "Canonical reusable root-block document owned by the Application Builder block contract.",
              "type": "object"
            },
            "updated_at": {
              "format": "date-time",
              "type": "string"
            }
          },
          "required": [
            "asset_key",
            "name",
            "block_kind",
            "owner",
            "library_search_terms",
            "created_at",
            "updated_at",
            "frontend_link",
            "root_block"
          ],
          "type": "object"
        }
      },
      "required": [
        "reusable_block"
      ],
      "type": "object"
    },
    "error": {
      "additionalProperties": false,
      "properties": {
        "code": {
          "type": "string"
        },
        "details": {
          "additionalProperties": true,
          "description": "Optional bounded, agent-safe correction or recovery facts.",
          "type": "object"
        },
        "message": {
          "type": "string"
        },
        "retryable": {
          "type": "boolean"
        }
      },
      "required": [
        "code",
        "message",
        "retryable"
      ],
      "type": "object"
    },
    "meta": {
      "additionalProperties": false,
      "properties": {
        "request_id": {
          "type": "string"
        }
      },
      "required": [
        "request_id"
      ],
      "type": "object"
    },
    "ok": {
      "description": "Whether the tool completed successfully.",
      "type": "boolean"
    }
  },
  "required": [
    "ok",
    "meta"
  ],
  "type": "object"
}
```