> ## Documentation Index > Fetch the complete documentation index at: https://cobo.com/products/agentic-wallet/manual/llms.txt > Use this file to discover all available pages before exploring further. # List supported chains > This operation retrieves the list of chains supported by the Cobo WaaS platform for a given wallet type. Results support cursor-based pagination using `before` and `after`. Pagination cursors are also returned in `meta.after` / `meta.before` (aligned with other list endpoints). ## OpenAPI ````yaml get /api/v1/metadata/chains openapi: 3.1.0 info: title: Cobo Agentic Wallet Service description: Unified wallet engine for human and agent principals version: 1.3.0 servers: [] security: [] paths: /api/v1/metadata/chains: get: tags: - Metadata summary: List supported chains description: >- This operation retrieves the list of chains supported by the Cobo WaaS platform for a given wallet type. Results support cursor-based pagination using `before` and `after`. Pagination cursors are also returned in `meta.after` / `meta.before` (aligned with other list endpoints). operationId: list_chains parameters: - name: wallet_type in: query required: false schema: $ref: '#/components/schemas/WalletType' description: The wallet type to retrieve chains for. Use `MPC`. default: MPC description: The wallet type to retrieve chains for. Use `MPC`. - name: chain_ids in: query required: false schema: description: >- A comma-separated list of Cobo chain IDs to filter by (for example, `SETH,BASE_ETH`). If omitted, all chains are returned. title: Chain Ids type: string nullable: true description: >- A comma-separated list of Cobo chain IDs to filter by (for example, `SETH,BASE_ETH`). If omitted, all chains are returned. - name: limit in: query required: false schema: description: 'The maximum number of items to return. Range: [1, 500].' title: Limit type: integer maximum: 500 minimum: 1 nullable: true description: 'The maximum number of items to return. Range: [1, 500].' - name: before in: query required: false schema: description: >- A cursor for backward pagination. Pass the `before` value from a previous response to retrieve the preceding page. title: Before type: string nullable: true description: >- A cursor for backward pagination. Pass the `before` value from a previous response to retrieve the preceding page. - name: after in: query required: false schema: description: >- A cursor for forward pagination. Pass the `after` value from a previous response to retrieve the next page. title: After type: string nullable: true description: >- A cursor for forward pagination. Pass the `after` value from a previous response to retrieve the next page. - name: X-API-Key in: header required: false schema: title: X-Api-Key type: string nullable: true responses: '200': description: Successful Response content: application/json: schema: $ref: >- #/components/schemas/StandardResponse_WaasPaginatedResponse_ChainMetadata__ '422': description: Validation Error content: application/json: schema: $ref: '#/components/schemas/WrappedValidationError' components: schemas: WalletType: type: string enum: - Custodial - MPC title: WalletType description: Supported wallet types. StandardResponse_WaasPaginatedResponse_ChainMetadata__: properties: success: type: boolean title: Success default: true result: $ref: '#/components/schemas/WaasPaginatedResponse_ChainMetadata_' suggestion: type: string title: Suggestion default: '' message: type: string title: Message default: '' meta: $ref: '#/components/schemas/PaginationMeta' nullable: true type: object required: - result title: StandardResponse[WaasPaginatedResponse[ChainMetadata]] WrappedValidationError: title: WrappedValidationError type: object required: - success - error properties: success: type: boolean const: false default: false title: Success error: type: object title: Error required: - detail properties: detail: type: array title: Detail items: $ref: '#/components/schemas/ValidationError' WaasPaginatedResponse_ChainMetadata_: properties: data: items: $ref: '#/components/schemas/ChainMetadata' type: array title: Data default: [] pagination: $ref: '#/components/schemas/WaasPagination' deprecated: true type: object title: WaasPaginatedResponse[ChainMetadata] PaginationMeta: properties: total: title: Total type: integer nullable: true offset: title: Offset type: integer nullable: true limit: title: Limit type: integer nullable: true has_more: title: Has More type: boolean nullable: true after: title: After type: string nullable: true before: title: Before type: string nullable: true type: object title: PaginationMeta description: |- Pagination metadata for list responses. Supports both legacy offset-based and cursor-based pagination. Cursor fields (``has_more``, ``after``, ``before``) are populated for cursor-paginated endpoints. Legacy fields (``offset``, ``limit``) are populated when the caller uses the deprecated ``offset`` parameter. ValidationError: properties: loc: items: anyOf: - type: string - type: integer type: array title: Location msg: type: string title: Message type: type: string title: Error Type input: title: Input ctx: type: object title: Context type: object required: - loc - msg - type title: ValidationError ChainMetadata: properties: chain_id: type: string title: Chain Id chain_type: type: string title: Chain Type description: >- The address standard shared across chains — chains with the same chain_type share one wallet address. E.g. ETH, BASE, ARB, OP, BSC, MATIC, AVAXC, and SETH are all chain_type: ETH, so they all use the same 0x... address. default: '' symbol: type: string title: Symbol default: '' icon_url: title: Icon Url type: string nullable: true explorer_tx_url: title: Explorer Tx Url type: string nullable: true explorer_address_url: title: Explorer Address Url type: string nullable: true require_memo: type: boolean title: Require Memo default: false confirming_threshold: type: integer title: Confirming Threshold default: 0 coinbase_maturity: type: integer title: Coinbase Maturity default: 0 type: object required: - chain_id title: ChainMetadata description: >- Chain metadata returned by the Cobo WaaS API. Describes a supported blockchain network and its operational parameters. WaasPagination: properties: before: type: string title: Before default: '' after: type: string title: After default: '' total_count: type: integer title: Total Count default: 0 type: object title: WaasPagination description: Cursor-based pagination metadata returned by the Cobo WaaS API. ````