> ## Documentation Index > Fetch the complete documentation index at: https://docs.lerian.studio/llms.txt > Use this file to discover all available pages before exploring further. # List Metadata Indexes > Use this endpoint to retrieve all metadata indexes. You can optionally filter the results by entity name. ## OpenAPI ````yaml /en/openapi/v3-current/ledger.yaml get /v1/settings/metadata-indexes openapi: 3.1.0 info: title: Midaz Ledger API description: >- Complete API reference for Midaz Ledger services including organization management, ledger operations, assets, segments, portfolios, accounts, account types, transactions, operations, balances, operation routes, transaction routes, and metadata indexes. version: 3.7.1 servers: - url: https://ledger.sandbox.lerian.net security: [] tags: - name: Organizations API - name: Ledgers API - name: Assets API - name: Segments API - name: Portfolios API - name: Account Types API - name: Accounts API - name: Balances API - name: Transactions API - name: Operations API - name: Operation Routes API - name: Transaction Routes API - name: Metadata Indexes API paths: /v1/settings/metadata-indexes: get: tags: - Metadata Indexes API summary: List Metadata Indexes description: >- Use this endpoint to retrieve all metadata indexes. You can optionally filter the results by entity name. parameters: - name: entity_name in: query description: The name of the entity to filter the metadata indexes. required: false example: transaction schema: type: string - $ref: '#/components/parameters/Authorization' - $ref: '#/components/parameters/ContentType' - $ref: '#/components/parameters/XRequestId' responses: '200': description: >- Indicates that the request was successful and the response contains the expected data. content: application/json: schema: type: array items: $ref: '#/components/schemas/MetadataIndexWithStatsResponse' example: - indexName: metadata.tier_1 entityName: transaction metadataKey: tier unique: false sparse: true stats: accesses: 150 statsSince: '2024-01-15T10:30:00Z' - indexName: metadata.externalId_1 entityName: account metadataKey: externalId unique: true sparse: false stats: accesses: 1200 statsSince: '2024-01-10T08:00:00Z' headers: {} '400': description: '' content: application/json: schema: $ref: '#/components/schemas/ErrorFormat' examples: Error0138: $ref: '#/components/examples/Error0138' headers: {} '401': description: Unauthorized content: application/json: schema: $ref: '#/components/schemas/ErrorFormat' examples: Error0041: $ref: '#/components/examples/Error0041' Error0042: $ref: '#/components/examples/Error0042' '403': description: Forbidden content: application/json: schema: $ref: '#/components/schemas/ErrorFormat' examples: Error0043: $ref: '#/components/examples/Error0043' '500': description: Internal Server Error content: application/json: schema: $ref: '#/components/schemas/ErrorFormat' examples: Error0046: $ref: '#/components/examples/Error0046' security: - bearer: [] components: parameters: Authorization: name: Authorization in: header description: >- The authorization token. **This header is required if your environment has Access Manager enabled**. required: false schema: type: string ContentType: name: Content-Type in: header description: >- The type of media of the resource. Recommended value is `application/json`. required: false example: application/json schema: type: string XRequestId: name: X-Request-Id in: header description: A unique identifier used to trace and track each request. required: false example: 019c96a0-0a98-7287-9a31-786e0809c769 schema: type: string format: uuid schemas: MetadataIndexWithStatsResponse: type: object description: The response body for a metadata index including usage statistics. required: - indexName - entityName - metadataKey - unique - sparse - stats properties: indexName: type: string description: The name of the index in the database. examples: - metadata.tier_1 entityName: type: string description: The name of the entity associated with the index. examples: - transaction metadataKey: type: string description: The metadata key used in the index. examples: - tier unique: type: boolean description: Indicates whether the index enforces uniqueness. examples: - false sparse: type: boolean description: >- Indicates whether the index is sparse (ignores documents without the indexed field). examples: - true stats: type: object description: Index usage statistics. required: - accesses - statsSince properties: accesses: type: integer description: The number of times the index has been accessed. examples: - 150 statsSince: type: string format: date-time description: The date and time since when statistics are being collected. examples: - '2024-01-15T10:30:00Z' ErrorFormat: type: object description: The response message error. required: - code - title - message properties: code: type: string description: A unique, stable identifier for the error. title: type: string description: A brief summary of the issue. message: type: string description: Detailed guidance for resolving the error. fields: type: object additionalProperties: true description: Additional information about the fields that caused the error. examples: Error0138: summary: Invalid Entity Name value: code: '0138' title: Invalid Entity Name message: >- The provided entity name is not valid. Accepted values are: organization, ledger, asset, segment, portfolio, account, transaction, operation, account_type, operation_route, transaction_route. Error0041: summary: Token Missing value: code: '0041' title: Token Missing message: >- A valid token must be provided in the request header. Please include a token and try again. Error0042: summary: Invalid Token value: code: '0042' title: Invalid Token message: >- The provided token is expired, invalid or malformed. Please provide a valid token and try again. Error0043: summary: Insufficient Privileges value: code: '0043' title: Insufficient Privileges message: >- You do not have the necessary permissions to perform this action. Please contact your administrator if you believe this is an error. Error0046: summary: Internal Server Error value: code: '0046' title: Internal Server Error message: >- The server encountered an unexpected error. Please try again later or contact support. securitySchemes: bearer: type: http scheme: bearer ````