> ## Documentation Index > Fetch the complete documentation index at: https://docs.getpara.com/llms.txt > Use this file to discover all available pages before exploring further. # List markets > List supported USDC markets and their contract addresses. Select one explicitly with marketId. The catalog does not guarantee execution is enabled. Confirm the Morpho backend release and yield enablement separately for each API environment before submitting Morpho operations. ## OpenAPI ````yaml /openapi.yaml get /v1/wallets/{walletId}/yield/markets openapi: 3.0.3 info: title: Para REST API version: '1.0' description: Server-to-server wallet creation and signing over HTTP servers: - url: https://api.beta.getpara.com description: Beta - url: https://api.getpara.com description: Production security: - ApiKeyAuth: [] paths: /v1/wallets/{walletId}/yield/markets: get: tags: - Yield summary: List markets description: >- List supported USDC markets and their contract addresses. Select one explicitly with marketId. The catalog does not guarantee execution is enabled. Confirm the Morpho backend release and yield enablement separately for each API environment before submitting Morpho operations. operationId: listYieldMarkets parameters: - $ref: '#/components/parameters/WalletId' - $ref: '#/components/parameters/RequestId' responses: '200': description: Supported markets for the current API environment. content: application/json: schema: type: object properties: markets: type: array items: $ref: '#/components/schemas/YieldMarket' required: - markets '401': $ref: '#/components/responses/Unauthorized' '403': $ref: '#/components/responses/Forbidden' '404': $ref: '#/components/responses/NotFound' '409': description: Wallet is not ready for signing. content: application/json: schema: $ref: '#/components/schemas/Error' '429': $ref: '#/components/responses/TooManyRequests' '500': $ref: '#/components/responses/ServerError' components: parameters: WalletId: name: walletId in: path required: true description: Wallet UUID. A malformed or inaccessible wallet ID returns `404`. schema: type: string format: uuid example: 0a1b2c3d-4e5f-6789-abcd-ef0123456789 RequestId: name: X-Request-Id in: header required: false description: UUID for request tracing. Para returns one if omitted. schema: type: string format: uuid schemas: YieldMarket: type: object properties: id: type: string example: morpho-v2-base-steakhouse-usdc chainId: type: integer example: 8453 protocol: type: string enum: - aave-v3 - morpho-v2 asset: type: string enum: - USDC tokenAddress: type: string vaultAddress: type: string description: Morpho vault address. poolAddress: type: string description: Aave pool address. required: - id - chainId - protocol - asset - tokenAddress Error: type: object required: - code - message properties: code: type: string description: Machine-readable error code for programmatic handling example: INVALID_REQUEST message: type: string description: Human-readable error message transactionId: type: string format: uuid description: >- Persisted transaction record id. Present only when a broadcast request failed after a history row was created. failureStage: type: string enum: - mpc_sign - signature_apply - signer_verify - broadcast - monitor_timeout description: >- Which stage of the broadcast lifecycle failed. Present on persisted broadcast failures. failureCode: type: string description: >- Machine-readable failure reason from the underlying broadcast helper (e.g. `INSUFFICIENT_NATIVE_BALANCE`, `EXECUTION_FAILED`). Present on broadcast-stage failures. signedTransaction: type: string description: >- Legacy signed transaction bytes on broadcast failures after signing. Sponsored responses never expose signed payloads. additionalProperties: true description: > All error responses include `code` and `message` fields. Some errors include extra fields (e.g. `walletId` on 409 Conflict). Broadcast failures that occur after a persisted transaction row is created include `transactionId`, `failureStage`, and (on broadcast-stage failures) `failureCode`, and also set the `x-transaction-id` response header. Legacy failures after signing can include `signedTransaction` for inspecting the already-signed bytes. Sponsored responses never expose signed payloads; recover the original operation with its tracking ID or original request and idempotency key. Common error codes: `INVALID_REQUEST`, `UNAUTHORIZED`, `FORBIDDEN`, `NOT_FOUND`, `CONFLICT`, `WALLET_ALREADY_EXISTS`, `WALLET_ALREADY_CLAIMED`, `RATE_LIMITED`, `INTERNAL_ERROR`. responses: Unauthorized: description: API key not provided content: application/json: schema: $ref: '#/components/schemas/Error' example: code: UNAUTHORIZED message: secret api key not provided Forbidden: description: Invalid API key content: application/json: schema: $ref: '#/components/schemas/Error' example: code: FORBIDDEN message: invalid secret api key NotFound: description: Wallet not found content: application/json: schema: $ref: '#/components/schemas/Error' example: code: NOT_FOUND message: wallet not found TooManyRequests: description: Rate limit exceeded headers: Retry-After: schema: type: integer description: Seconds until the rate limit window resets example: 60 content: application/json: schema: $ref: '#/components/schemas/Error' example: code: RATE_LIMITED message: Rate limit exceeded, try again shortly. ServerError: description: Internal server error content: application/json: schema: $ref: '#/components/schemas/Error' example: code: INTERNAL_ERROR message: Internal Server Error securitySchemes: ApiKeyAuth: type: apiKey in: header name: X-API-Key description: Your partner secret key (server-side only) x-default: sk_your_secret_key_here ````