> ## Documentation Index > Fetch the complete documentation index at: https://docs.sakawave.com/llms.txt > Use this file to discover all available pages before exploring further. # List packages for a biller in a group > The packages a biller offers, asserting the biller belongs to the group named. ## Error codes | Status | `code` | Cause | | - | - | - | | `400` | `validation_failed` | A page size above 100. | | `404` | `resource_not_found` | No such group, or the biller is not in it. | | `401` | `INVALID_API_KEY` | The key is missing, invalid, inactive, expired, from the other environment, or blocked by its IP allowlist. | | `429` | `api_key_rate_limit_exceeded` | The per-minute limit for this key was exceeded. | ## OpenAPI ````yaml /openapi.json get /v1/bill-payments/groups/{groupId}/billers/{billerId}/packages openapi: 3.1.0 info: title: Sakawave Business API version: 1.0.0-draft summary: >- Accounts, transfers, FX quotes, and transaction reconciliation for Sakawave businesses. description: >- Generated from the public NestJS controllers and their Zod request schemas. Public URLs and policy statements remain draft until the Phase 1 contract checklist is approved. contact: name: Sakawave API Support email: api-support@sakawave.example servers: - url: https://sandbox-api.sakawave.example description: Sandbox (default) - url: https://api.sakawave.example description: Live security: - bearerAuth: [] tags: - name: Bill payments description: Browse the biller catalog, validate a customer, and pay a bill. - name: Cards description: Issue, fund, and control USD virtual and disposable cards. - name: eSIM description: >- Sell mobile data abroad: browse the catalog, buy an eSIM, and manage it once installed. - name: Currencies and countries description: >- Reference data: what may be held, what may be sent where, and which jurisdictions are served. - name: Customers description: Create and manage customers of your business. - name: Accounts description: >- Open business and customer accounts, and issue the destinations that fund them. - name: Transfer destinations description: Resolve temporary destinations and saved recipients. - name: FX quotes description: Create and retrieve time-limited cross-currency quotes. - name: Transfers description: Preview, create, and monitor transfers. - name: Transactions description: Read ledger entries for reconciliation. paths: /v1/bill-payments/groups/{groupId}/billers/{billerId}/packages: get: tags: - Bill payments summary: List packages for a biller in a group description: >- The packages a biller offers, asserting the biller belongs to the group named. operationId: listPackagesInGroup parameters: - name: groupId in: path required: true description: Group id. schema: $ref: '#/components/schemas/Ulid' example: 01KZXPYGX5VZXDH9VHJ4YTPCA8 - name: billerId in: path required: true description: Biller id. schema: $ref: '#/components/schemas/Ulid' example: 01KZXPYGX5VZXDH9VHJ4YTPCB9 - name: page in: query required: false description: One-based page number. schema: type: integer minimum: 1 default: 1 - name: pageSize in: query required: false description: Records per page. schema: type: integer minimum: 1 maximum: 100 default: 20 responses: '200': description: Successful response. headers: X-Request-ID: description: >- The request identifier assigned by Sakawave. Include it in support requests. schema: type: string content: application/json: schema: $ref: '#/components/schemas/BillerPackagePage' example: items: - id: 01KZXPYGX5VZXDH9VHJ4YTPCC1 billerId: 01KZXPYGX5VZXDH9VHJ4YTPCB9 name: 5GB Monthly slug: example-telco-5gb amount: '3000.00' currency: NGN isFixedAmount: true status: active pagination: page: 1 pageSize: 20 total: 1 totalPages: 1 '400': $ref: '#/components/responses/ValidationError' '401': $ref: '#/components/responses/AuthenticationError' '404': $ref: '#/components/responses/NotFoundError' '429': $ref: '#/components/responses/RateLimitError' '500': $ref: '#/components/responses/ServerError' security: - bearerAuth: [] components: schemas: Ulid: type: string minLength: 26 maxLength: 26 pattern: ^[0-7][0-9A-HJKMNP-TV-Z]{25}$ example: 01K2Z3AB4C5D6E7F8G9HJKMNPQ description: A 26-character ULID. BillerPackagePage: type: object additionalProperties: false properties: items: type: array items: $ref: '#/components/schemas/BillerPackageResponse' pagination: $ref: '#/components/schemas/BillsPagination' required: - items - pagination BillerPackageResponse: type: object additionalProperties: false properties: id: $ref: '#/components/schemas/Ulid' description: Sakawave’s identifier. Send it as `packageId` on an enquiry. billerId: $ref: '#/components/schemas/Ulid' name: type: string slug: type: string description: Display text. Not an address. amount: anyOf: - $ref: '#/components/schemas/DecimalAmount' - type: 'null' currency: type: string description: ISO 4217. NGN today. isFixedAmount: type: boolean description: >- True: pay exactly `amount`. False with an `amount`: a suggested default you may override. False with none: you supply the amount. status: type: string enum: - active - inactive required: - id - billerId - name - slug - amount - currency - isFixedAmount - status BillsPagination: type: object additionalProperties: false properties: page: type: integer minimum: 1 pageSize: type: integer minimum: 1 maximum: 100 total: type: integer minimum: 0 totalPages: type: integer minimum: 0 required: - page - pageSize - total - totalPages RequestError: anyOf: - $ref: '#/components/schemas/ValidationError' - $ref: '#/components/schemas/Error' description: >- Either a field-level validation failure carrying an errors array, or a rule the request broke, identified by code. Error: type: object additionalProperties: true properties: statusCode: type: integer message: type: string description: >- A sentence suitable for a log or a support conversation, not for a user interface. code: type: string description: >- The stable machine-readable reason. Branch on this, never on the message. required: - message - code description: >- An error body. Individual errors may add context fields alongside these three. RateLimitError: type: object additionalProperties: false properties: statusCode: const: 429 message: type: string code: const: api_key_rate_limit_exceeded retryAfterSeconds: type: integer minimum: 1 required: - statusCode - message - code - retryAfterSeconds DecimalAmount: type: string pattern: ^-?\d+(?:\.\d+)?$ example: '25000.00' description: >- A decimal display amount returned by transfer APIs. Preserve it as a string. ValidationError: type: object additionalProperties: false properties: statusCode: const: 400 message: type: string description: The single failure, or a count when more than one field failed. code: const: validation_failed errors: type: array items: $ref: '#/components/schemas/ValidationFailure' required: - statusCode - message - code - errors ValidationFailure: type: object additionalProperties: false properties: message: type: string field: type: string code: type: string path: type: array items: anyOf: - type: string - type: integer required: - message - field - code - path responses: ValidationError: description: >- The request was rejected before it was acted on. Field failures list every failing field. headers: X-Request-ID: description: >- The request identifier assigned by Sakawave. Include it in support requests. schema: type: string content: application/json: schema: $ref: '#/components/schemas/RequestError' example: statusCode: 400 message: Must be a valid identifier. code: validation_failed errors: - message: Must be a valid identifier. field: accountId code: custom path: - accountId AuthenticationError: description: >- The API key is missing, invalid, inactive, expired, for another environment, or blocked by its IP allowlist. headers: X-Request-ID: description: >- The request identifier assigned by Sakawave. Include it in support requests. schema: type: string content: application/json: schema: $ref: '#/components/schemas/Error' example: statusCode: 401 code: INVALID_API_KEY message: Invalid or inactive API credentials. NotFoundError: description: The requested resource was not found for this business. headers: X-Request-ID: description: >- The request identifier assigned by Sakawave. Include it in support requests. schema: type: string content: application/json: schema: $ref: '#/components/schemas/Error' example: statusCode: 404 code: resource_not_found message: Resource not found. RateLimitError: description: The API key rate limit was exceeded. headers: X-Request-ID: description: >- The request identifier assigned by Sakawave. Include it in support requests. schema: type: string content: application/json: schema: $ref: '#/components/schemas/RateLimitError' example: statusCode: 429 message: Too many API requests. Try again later. code: api_key_rate_limit_exceeded retryAfterSeconds: 17 ServerError: description: An unexpected server error occurred. headers: X-Request-ID: description: >- The request identifier assigned by Sakawave. Include it in support requests. schema: type: string content: application/json: schema: $ref: '#/components/schemas/Error' example: statusCode: 500 code: internal_server_error message: An unexpected error occurred. securitySchemes: bearerAuth: type: http scheme: bearer bearerFormat: Sakawave API key description: >- A secret API key, sent as `Authorization: Bearer sk_test_…` in sandbox or `Bearer sk_live_…` in live. ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.