> ## Documentation Index > Fetch the complete documentation index at: https://docs.venice.ai/llms.txt > Use this file to discover all available pages before exploring further. # Billing Balance > Get current balance information for the authenticated user. Returns remaining DIEM/USD balances and total DIEM epoch allocation for calculating usage percentage. ## OpenAPI ````yaml GET /billing/balance openapi: 3.0.0 info: description: The Venice.ai API. termsOfService: https://venice.ai/legal/tos title: Venice.ai API version: '20260626.184905' x-guidance: >- Venice.ai is an OpenAI-compatible inference API supporting text, image, audio, and video generation. **Authentication options:** - API Key: Use Bearer token in Authorization header - x402 Wallet: Use USDC credits via EVM or Solana wallet (no account required) **For x402 wallet access:** 1. POST /x402/top-up without headers to get payment requirements 2. Choose one of the returned Base or Solana payment options and sign a USDC payment using the x402 SDK 3. POST /x402/top-up with PAYMENT-SIGNATURE header to add credits 4. Call any inference endpoint with SIGN-IN-WITH-X header **Pricing:** Prepaid credits consumed per request. Check /models for available models and their capabilities. servers: - url: https://api.venice.ai/api/v1 security: - BearerAuth: [] tags: - description: >- Generate speech/audio, transcribe audio, and manage asynchronous audio generation jobs. name: Audio - description: >- Given a list of messages comprising a conversation, the model will return a response. Supports multimodal inputs including text, images, audio (input_audio), and video (video_url) for compatible models. name: Chat - description: List and describe the various models available in the API. name: Models - description: Generate and manipulate images using AI models. name: Image - description: Generate videos using AI models. name: Video - description: List and retrieve character information for use in completions. name: Characters - description: >- Billing and usage analytics. **Beta**: This API is currently in beta and may be unstable. Endpoints, request/response schemas, and behavior may change without notice. name: Billing - description: Proxy JSON-RPC requests to blockchain nodes. Billed per credit. name: Crypto RPC - description: >- Wallet-based API access using the x402 protocol. No API key required — authenticate with an EVM or Solana wallet. **How it works:** 1. **Authenticate** — Send a `SIGN-IN-WITH-X` header (base64-encoded signed SIWX payload) with any request. EVM wallets sign an EIP-4361 SIWE message; Solana wallets sign the Solana SIWX message with Ed25519. See the `siwx` security scheme for the exact format. 2. **Top up** — `POST /x402/top-up` without a payment header returns an `accepts` array with Base and Solana USDC payment options. Choose one entry, sign it using the x402 SDK (`npm install x402`), and re-submit with the `PAYMENT-SIGNATURE` header (the legacy `X-402-Payment` and `X-PAYMENT` names are also accepted). 3. **Use any endpoint** — All inference endpoints (chat, image, audio, video, embeddings) accept `siwx` as an alternative to `BearerAuth`. Charges are deducted from your USDC credit balance. 4. **Monitor balance** — `GET /x402/balance/{walletAddress}` returns your current balance. The `X-Balance-Remaining` response header on inference calls also reports it. **Quick start (5 lines):** ``` import { VeniceClient } from '@venice-ai/x402-client' const venice = new VeniceClient(process.env.WALLET_KEY) await venice.topUp(10) // $10 USDC on a supported x402 rail const res = await venice.chat({ model: 'zai-org-glm-5-1', messages: [{ role: 'user', content: 'Hello!' }] }) ``` **Payment:** USDC on Base (chain ID 8453) or Solana mainnet. Minimum top-up: $5. Alternatively, stake DIEM tokens for daily credits (1 DIEM = $1/day). name: x402 externalDocs: description: Venice.ai API documentation url: https://docs.venice.ai paths: /billing/balance: get: tags: - Billing summary: /api/v1/billing/balance description: >- Get current balance information for the authenticated user. Returns remaining DIEM/USD balances and total DIEM epoch allocation for calculating usage percentage. operationId: getBillingBalance responses: '200': description: Successful response content: application/json: schema: type: object properties: canConsume: type: boolean description: >- Whether the user has sufficient balance to make API requests example: true consumptionCurrency: type: string nullable: true enum: - USD - VCU - DIEM - BUNDLED_CREDITS description: >- The currency that will be used for consumption (DIEM or USD) example: DIEM balances: type: object properties: diem: type: number nullable: true description: >- Remaining DIEM balance for current epoch. Null if not staking. example: 90.5 usd: type: number nullable: true description: Remaining USD balance. Null if not available. example: 25 required: - diem - usd diemEpochAllocation: type: number description: >- Total DIEM allocation for the current epoch (from staking). Use with balances.diem to calculate usage percentage. example: 100 required: - canConsume - consumptionCurrency - balances - diemEpochAllocation additionalProperties: false description: Current balance information for the authenticated user example: canConsume: true consumptionCurrency: DIEM balances: diem: 90.5 usd: 25 diemEpochAllocation: 100 '401': description: Authentication failed content: application/json: schema: $ref: '#/components/schemas/StandardError' '500': description: Inference processing failed content: application/json: schema: $ref: '#/components/schemas/StandardError' components: schemas: StandardError: type: object properties: error: type: string description: A description of the error required: - error securitySchemes: BearerAuth: bearerFormat: JWT scheme: bearer type: http ````