> ## 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.

# Edit (aka Inpaint)

> Edit or modify an image based on the supplied prompt. The image can be provided either as a multipart form-data file upload or as a base64-encoded string in a JSON request. For models with resolution tiers that require explicit dimensions, omit aspect_ratio or set it to auto to infer the closest supported aspect ratio from the input image; provide aspect_ratio directly when exact output dimensions are required. Use output_format to request jpeg, jpg, png, or webp output.

**Authentication:** This endpoint accepts either a Bearer API key or a `SIGN-IN-WITH-X` header for x402 wallet-based authentication. The legacy `X-Sign-In-With-X` header is also accepted during migration. When using x402, a `402 Payment Required` response indicates insufficient balance and includes top-up instructions.

<Warning>
  This is an experimental endpoint and may be subject to change.
</Warning>

<Info>
  **Pricing:** Image editing pricing varies by model. The default model (`qwen-edit`) is **\$0.04 per edit**. See the [Models endpoint](/api-reference/endpoint/models/list) for all available edit models and their pricing.
</Info>

## Quality Tiers

Some edit models accept an optional `quality` parameter (`low`, `medium`, `high`) that trades visual fidelity for cost. Currently supported by `gpt-image-2-edit`; other models ignore the parameter.

```json theme={"system"}
{
  "model": "gpt-image-2-edit",
  "image": "iVBORw0KGgo...",
  "prompt": "change the sky to a sunrise",
  "resolution": "2K",
  "quality": "medium"
}
```

When you omit `quality`, the model uses its default tier (`high` for `gpt-image-2-edit`). Per-tier prices (1K/2K/4K × low/medium/high) live under `model_spec.pricing.quality` in the [Models endpoint](/api-reference/endpoint/models/list) and are listed in the [Pricing overview](/overview/pricing).

<Info>
  Quality-aware pricing is the default for all API and SDK callers — no opt-in header required. Requests that omit `quality` are billed at the model's default tier (`high` for `gpt-image-2-edit`).
</Info>

## Postman Collection

For additional examples, please see this [Postman Collection](https://www.postman.com/veniceai/workspace/venice-ai-workspace/folder/38652128-2d156cd6-a9bc-4586-8a8b-98e4b5c4435d?action=share\&source=copy-link\&creator=38652128\&ctx=documentation).

***

<Warning>
  The default model (`qwen-edit`) blocks requests that try to generate explicit sexual imagery, sexualize minors, or depict real-world violence. Other models may have different content policies.
</Warning>


## OpenAPI

````yaml POST /image/edit
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:
  /image/edit:
    post:
      tags:
        - Image
      summary: /api/v1/image/edit
      description: >-
        Edit or modify an image based on the supplied prompt. The image can be
        provided either as a multipart form-data file upload or as a
        base64-encoded string in a JSON request. For models with resolution
        tiers that require explicit dimensions, omit aspect_ratio or set it to
        auto to infer the closest supported aspect ratio from the input image;
        provide aspect_ratio directly when exact output dimensions are required.
        Use output_format to request jpeg, jpg, png, or webp output.


        **Authentication:** This endpoint accepts either a Bearer API key or a
        `SIGN-IN-WITH-X` header for x402 wallet-based authentication. The legacy
        `X-Sign-In-With-X` header is also accepted during migration. When using
        x402, a `402 Payment Required` response indicates insufficient balance
        and includes top-up instructions.
      operationId: editImage
      requestBody:
        content:
          application/json:
            schema:
              allOf:
                - $ref: '#/components/schemas/EditImageRequest'
                - type: object
                  properties:
                    modelId:
                      type: string
                      enum:
                        - firered-image-edit
                        - qwen-edit-uncensored
                        - grok-imagine-edit
                        - grok-imagine-quality-edit
                        - qwen-image-2-edit
                        - qwen-image-2-pro-edit
                        - wan-2-7-pro-edit
                        - flux-2-max-edit
                        - gpt-image-2-edit
                        - gpt-image-1-5-edit
                        - nano-banana-2-edit
                        - nano-banana-pro-edit
                        - luma-uni-1-edit
                        - luma-uni-1-max-edit
                        - seedream-v5-lite-edit
                        - seedream-v4-edit
          multipart/form-data:
            schema:
              allOf:
                - $ref: '#/components/schemas/EditImageRequest'
                - type: object
                  properties:
                    modelId:
                      type: string
                      enum:
                        - firered-image-edit
                        - qwen-edit-uncensored
                        - grok-imagine-edit
                        - grok-imagine-quality-edit
                        - qwen-image-2-edit
                        - qwen-image-2-pro-edit
                        - wan-2-7-pro-edit
                        - flux-2-max-edit
                        - gpt-image-2-edit
                        - gpt-image-1-5-edit
                        - nano-banana-2-edit
                        - nano-banana-pro-edit
                        - luma-uni-1-edit
                        - luma-uni-1-max-edit
                        - seedream-v5-lite-edit
                        - seedream-v4-edit
      responses:
        '200':
          description: OK
          headers:
            X-Balance-Remaining:
              description: >-
                Remaining x402 credit balance in USD after this request (only
                present for x402 auth).
              required: false
              schema:
                type: string
                example: '4.230000'
            x-venice-is-content-violation:
              description: >-
                Indicates if the generated image does not meet Venice terms of
                service.
              required: false
              schema:
                type: boolean
            x-venice-model-id:
              description: The ID of the model used for the edit.
              required: false
              schema:
                type: string
            x-venice-model-name:
              description: The friendly name of the model used for the edit.
              required: false
              schema:
                type: string
            x-venice-model-deprecation-warning:
              description: A warning that the model is scheduled for deprecation
              required: false
              schema:
                type: string
            x-venice-model-deprecation-date:
              description: The date the model is scheduled for deprecation
              required: false
              schema:
                type: string
                format: date-time
            x-venice-deprecated:
              description: >-
                Present and set to "true" when the model is deprecated. Absent
                otherwise.
              required: false
              schema:
                type: string
                enum:
                  - 'true'
            x-venice-deprecated-replacement:
              description: >-
                Public API model ID clients should migrate to. Only present when
                a replacement is published.
              required: false
              schema:
                type: string
          content:
            image/png:
              schema:
                type: string
                format: binary
            image/jpeg:
              schema:
                type: string
                format: binary
            image/webp:
              schema:
                type: string
                format: binary
        '400':
          description: Invalid request parameters
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/DetailedError'
        '401':
          description: Authentication failed
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/StandardError'
        '402':
          description: >-
            Payment or balance required. Response varies by authentication
            state:


            **API Key users:** Standard error response with
            `INSUFFICIENT_BALANCE` code. Top up your Venice balance at
            venice.ai.


            **Unauthenticated x402 discovery:** Structured x402 response with
            `x402Version`, `resource`, `accepts`, and
            `extensions["sign-in-with-x"]`. The `accepts` array advertises Base
            and Solana payment requirements.


            **Authenticated x402 wallet users with insufficient credit:**
            Structured response with `PAYMENT_REQUIRED` code containing:

            - `topUpInstructions`: Step-by-step guide to top up via x402
            protocol

            - `supportedTokens` / `supportedChains`: Accepted payment methods

            - `siwxChallenge`: Fresh Sign-In-With-X challenge metadata


            The `PAYMENT-REQUIRED` header also contains a base64-encoded x402
            protocol object with the payment requirements for programmatic
            discovery.
          headers:
            PAYMENT-REQUIRED:
              description: >-
                Base64-encoded JSON with x402 payment requirements. Present on
                x402 middleware 402 responses. Decode to choose and sign one
                accepted payment requirement programmatically.
              required: false
              schema:
                type: string
          content:
            application/json:
              schema:
                oneOf:
                  - $ref: '#/components/schemas/StandardError'
                  - $ref: '#/components/schemas/X402InferencePaymentRequired'
        '415':
          description: Invalid request content-type
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/StandardError'
        '429':
          description: Rate limit exceeded
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/StandardError'
        '500':
          description: Inference processing failed
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/StandardError'
        '503':
          description: The model is at capacity. Please try again later.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/StandardError'
      security:
        - BearerAuth: []
        - siwx: []
components:
  schemas:
    EditImageRequest:
      type: object
      properties:
        aspect_ratio:
          type: string
          enum:
            - auto
            - '1:1'
            - '3:2'
            - '16:9'
            - '21:9'
            - '9:16'
            - '2:3'
            - '3:4'
            - '4:5'
          description: >-
            The aspect ratio for the output image. Use 'auto' or omit this
            parameter to infer the closest supported aspect ratio from the input
            image when explicit sizing is required by the model. Supported
            values vary by model - check GET /api/v1/models for model-specific
            options.
          example: '16:9'
        resolution:
          type: string
          minLength: 1
          maxLength: 10
          description: >-
            Resolution tier for the output image (e.g. "1K", "2K", "4K").
            Supported values vary by model - check GET /api/v1/models for
            model-specific options. Defaults to "1K" when not specified.
          example: 1K
        image:
          anyOf:
            - {}
            - type: string
            - type: string
              format: uri
          description: >-
            The image to edit. Can be either a file upload, a base64-encoded
            string, or a URL starting with http:// or https://. Image dimensions
            must be at least 65536 pixels and must not exceed 33177600 pixels.
            File size must be less than 25MB.
        model:
          type: string
          minLength: 1
          default: firered-image-edit
          description: The model ID to use for image editing.
        modelId:
          type: string
          minLength: 1
          description: >-
            Deprecated: Use "model" instead. The model ID to use for image
            editing.
          deprecated: true
        output_format:
          type: string
          enum:
            - jpeg
            - png
            - webp
          description: >-
            Output format for the edited image. Accepts jpeg, jpg, png, or webp.
            When omitted, the format is inferred from resolution: PNG for 1K
            edits and JPEG for 2K/4K edits.
          example: png
        prompt:
          type: string
          minLength: 1
          maxLength: 32768
          description: >-
            The text directions to edit or modify the image. Short, descriptive
            prompts work best (e.g., "remove the tree", "change the sky to
            sunrise"). Character limit is model specific and is listed in the
            promptCharacterLimit setting in the model list endpoint.
          example: Change the color of the sky to a sunrise
        safe_mode:
          type: boolean
          default: true
          description: >-
            Whether to use safe mode. If enabled, this will blur images that are
            classified as having adult content.
          example: false
      required:
        - image
        - prompt
      additionalProperties: false
      description: Edit an image based on the supplied prompt.
      example:
        prompt: Colorize
        image: iVBORw0KGgoAAAANSUhEUgAAAgAAAAIACAIAAAB7GkOtAAAAIGNIUk0A...
    DetailedError:
      type: object
      properties:
        details:
          type: object
          properties: {}
          description: Details about the incorrect input
          example:
            _errors: []
            field:
              _errors:
                - Field is required
        error:
          type: string
          description: A description of the error
      required:
        - error
    StandardError:
      type: object
      properties:
        error:
          type: string
          description: A description of the error
      required:
        - error
    X402InferencePaymentRequired:
      anyOf:
        - type: object
          properties:
            x402Version:
              type: number
              description: x402 protocol version.
              example: 2
            error:
              type: string
              description: Human-readable payment requirement message.
              example: Payment required
            resource:
              type: object
              properties:
                url:
                  type: string
                  description: Protected resource URL.
                  example: https://api.venice.ai/api/v1/chat/completions
                description:
                  type: string
                  description: Human-readable resource description.
                  example: Venice API
                mimeType:
                  type: string
                  description: Resource MIME type.
                  example: application/json
              required:
                - url
                - description
                - mimeType
              additionalProperties: false
            accepts:
              type: array
              items:
                type: object
                properties:
                  scheme:
                    type: string
                    enum:
                      - exact
                    description: x402 payment scheme.
                    example: exact
                  network:
                    type: string
                    description: Payment network for this requirement.
                    example: solana
                  asset:
                    type: string
                    description: USDC token address or mint for the selected network.
                    example: EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v
                  amount:
                    type: string
                    description: >-
                      Required payment amount in base units (USDC has 6
                      decimals).
                    example: '10000000'
                  payTo:
                    type: string
                    description: Receiver wallet address for the selected network.
                    example: 8qUL23aSj7mDWdoLMXGHFvnVCT9wd7jXcysiekroADEL
                  maxTimeoutSeconds:
                    type: number
                    description: Maximum time allowed for payment settlement.
                    example: 300
                  extra:
                    type: object
                    properties: {}
                    description: >-
                      Network-specific x402 metadata. Solana requirements
                      include a feePayer.
                    example:
                      name: USD Coin
                      version: '2'
                      feePayer: BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F
                required:
                  - scheme
                  - network
                  - asset
                  - amount
                  - payTo
                  - maxTimeoutSeconds
                  - extra
                additionalProperties: false
              description: >-
                Protocol payment requirements. Clients should choose one entry,
                such as Base or Solana, and sign exactly that requirement.
            extensions:
              type: object
              properties: {}
              description: >-
                Protocol extensions. Inference 402 responses include
                `sign-in-with-x` with a SIWX challenge for wallet-credit
                authentication.
            authOptions:
              type: object
              properties:
                apiKey:
                  type: object
                  properties:
                    header:
                      type: string
                      description: API key authentication header format.
                      example: 'Authorization: Bearer YOUR_API_KEY'
                    getKey:
                      type: string
                      description: Where to create or manage API keys.
                      example: https://venice.ai/settings/api
                    docs:
                      type: string
                      description: API key documentation URL.
                      example: https://docs.venice.ai/api-reference
                  required:
                    - header
                    - getKey
                    - docs
                  additionalProperties: false
                x402Wallet:
                  type: object
                  properties:
                    header:
                      type: string
                      description: Header used for Sign-In-With-X wallet authentication.
                      example: SIGN-IN-WITH-X
                    legacyHeader:
                      type: string
                      description: Legacy Sign-In-With-X header accepted during migration.
                      example: X-Sign-In-With-X
                    topUp:
                      type: string
                      description: >-
                        Endpoint used to discover and submit x402 top-up
                        payments.
                      example: POST /api/v1/x402/top-up
                    docs:
                      type: string
                      description: x402 top-up API documentation URL.
                      example: >-
                        https://docs.venice.ai/api-reference/endpoint/x402/top-up
                  required:
                    - header
                    - legacyHeader
                    - topUp
                    - docs
                  additionalProperties: false
              required:
                - apiKey
                - x402Wallet
              additionalProperties: false
          required:
            - x402Version
            - resource
            - accepts
            - authOptions
          additionalProperties: false
          description: >-
            Returned when an inference request has no API key or wallet
            authentication. The JSON body includes x402 discovery requirements
            and authentication options.
        - type: object
          properties:
            error:
              type: string
              enum:
                - Payment required
              description: Error message indicating payment is required.
            code:
              type: string
              enum:
                - PAYMENT_REQUIRED
              description: Machine-readable error code.
            reason:
              type: string
              enum:
                - insufficient_balance
              description: Reason the x402-authenticated request could not proceed.
            message:
              type: string
              description: Human-readable context about the payment requirement.
              example: Insufficient x402 balance
            currentBalanceUsd:
              type: number
              description: Current x402 credit balance for the wallet.
              example: 0.01
            minimumBalanceUsd:
              type: number
              description: Minimum x402 credit balance required before the request can run.
              example: 0.1
            description:
              type: string
              description: Protected resource description.
              example: Venice API
            suggestedTopUpUsd:
              type: number
              description: Suggested amount to top up in USD.
              example: 10
            minimumTopUpUsd:
              type: number
              description: Minimum allowed top-up amount in USD.
              example: 5
            supportedTokens:
              type: array
              items:
                type: string
              description: List of supported token symbols for payment.
              example:
                - USDC
            supportedChains:
              type: array
              items:
                type: string
              description: List of supported top-up rails.
              example:
                - base
                - solana
            topUpInstructions:
              type: object
              properties:
                step1:
                  type: string
                  description: 'First step: get payment requirements.'
                  example: >-
                    POST /api/v1/x402/top-up with no payment header to get
                    payment requirements
                step2:
                  type: string
                  description: 'Second step: sign the payment.'
                  example: >-
                    Choose a payment option from accepts and sign a USDC
                    transfer authorization using the x402 SDK
                    (createPaymentHeader)
                step3:
                  type: string
                  description: 'Third step: submit the payment.'
                  example: >-
                    POST /api/v1/x402/top-up with the signed PAYMENT-SIGNATURE
                    header
                receiverWallet:
                  type: string
                  description: >-
                    Legacy Base receiver wallet address. Prefer the selected
                    accepts entry from /x402/top-up for network-specific payTo
                    values.
                  example: <RECEIVER_WALLET_ADDRESS>
                tokenAddress:
                  type: string
                  description: >-
                    Legacy Base USDC token address. Prefer the selected accepts
                    entry from /x402/top-up for network-specific assets.
                  example: <USDC_TOKEN_ADDRESS>
                tokenDecimals:
                  type: number
                  description: Token decimal places.
                  example: 6
                network:
                  type: string
                  description: >-
                    Legacy Base target network. Prefer the selected accepts
                    entry from /x402/top-up for network-specific values.
                  example: eip155:8453
                minimumAmountUsd:
                  type: number
                  description: Minimum top-up amount in USD.
                  example: 5
              required:
                - step1
                - step2
                - step3
                - receiverWallet
                - tokenAddress
                - tokenDecimals
                - network
                - minimumAmountUsd
              additionalProperties: false
            siwxChallenge:
              type: object
              properties:
                info:
                  type: object
                  properties:
                    domain:
                      type: string
                      description: Domain for the SIWX challenge.
                      example: api.venice.ai
                    uri:
                      type: string
                      description: Resource URI for the challenge.
                      example: https://api.venice.ai/api/v1/chat/completions
                    version:
                      type: string
                      description: SIWX version.
                      example: '1'
                    nonce:
                      type: string
                      description: Unique nonce for replay protection.
                      example: '{{nonce}}'
                    issuedAt:
                      type: string
                      description: ISO timestamp when the challenge was issued.
                      example: '2026-04-09T12:00:00.000Z'
                    expirationTime:
                      type: string
                      description: ISO timestamp when the challenge expires.
                      example: '2026-04-09T12:05:00.000Z'
                    statement:
                      type: string
                      description: Human-readable statement for the signature.
                      example: Sign in to Venice AI
                  required:
                    - domain
                    - uri
                    - version
                    - nonce
                    - issuedAt
                    - expirationTime
                    - statement
                  additionalProperties: false
                supportedChains:
                  type: array
                  items:
                    type: object
                    properties:
                      chainId:
                        type: string
                        description: Supported chain identity.
                        example: solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp
                      type:
                        type: string
                        enum:
                          - eip191
                          - eip1271
                          - ed25519
                        description: Signature type accepted for this chain.
                        example: ed25519
                    required:
                      - chainId
                      - type
                    additionalProperties: false
                  description: Supported SIWX chains and signature types.
              required:
                - info
                - supportedChains
              additionalProperties: false
          required:
            - error
            - code
            - reason
            - suggestedTopUpUsd
            - minimumTopUpUsd
            - supportedTokens
            - supportedChains
            - topUpInstructions
            - siwxChallenge
          additionalProperties: false
  securitySchemes:
    BearerAuth:
      bearerFormat: JWT
      scheme: bearer
      type: http
    siwx:
      description: >-
        Wallet-based authentication using the x402 protocol (Sign-In-With-X).
        Supports EVM SIWE signatures on Base and Ed25519 signatures on Solana
        mainnet.


        **Header format:** Base64-encoded JSON object with the following fields:

        - `address` — EVM or Solana wallet address

        - `message` — Signed SIWX message. EVM wallets use EIP-4361 SIWE; Solana
        wallets use the Solana SIWX message format.

        - `signature` — Signature of the message, signed by the wallet's private
        key. EVM signatures are hex; Solana signatures may be base58 or base64.

        - `timestamp` — Unix timestamp in milliseconds

        - `chainId` — Chain identity. Use `8453`, `"8453"`, or `"eip155:8453"`
        for Base; use `"solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp"` for Solana.

        - `type` — Optional signature type. Use `"ed25519"` for Solana. Omitted
        means EVM/EIP-191 for backward compatibility.


        **EVM SIWE message fields:**

        - `domain`: `api.venice.ai`

        - `uri`: `https://api.venice.ai`

        - `version`: `"1"`

        - `chainId`: `8453`

        - `nonce`: Random 16-character hex string

        - `issuedAt` / `expirationTime`: ISO timestamps (recommended TTL: 10
        minutes)

        - `statement`: `"Sign in to Venice API"`


        **Example (TypeScript):**

        ```

        import { Wallet } from 'ethers'

        import { SiweMessage } from 'siwe'


        const wallet = new Wallet(PRIVATE_KEY)

        const msg = new SiweMessage({ domain: 'api.venice.ai', address:
        wallet.address, statement: 'Sign in to Venice API', uri:
        'https://api.venice.ai', version: '1', chainId: 8453, nonce:
        crypto.randomUUID().replace(/-/g, '').slice(0, 16), issuedAt: new
        Date().toISOString(), expirationTime: new Date(Date.now() +
        600000).toISOString() })

        const signature = await wallet.signMessage(msg.prepareMessage())

        const header = btoa(JSON.stringify({ address: wallet.address, message:
        msg.prepareMessage(), signature, timestamp: Date.now(), chainId: 8453
        }))

        // Set header: SIGN-IN-WITH-X: <header>

        ```


        **Solana message fields:** The signed message starts with `<domain>
        wants you to sign in with your Solana account:`, followed by the wallet
        address and the standard `URI`, `Version`, `Chain ID`, `Nonce`, `Issued
        At`, and optional `Expiration Time` fields. Use `type: "ed25519"` and
        `chainId: "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp"` in the encoded JSON
        payload.


        **SDK:** `npm install @venice-ai/x402-client` provides `VeniceClient`
        and `createAuthFetch` which handle this automatically.


        **Billing:** x402 users pay from a prepaid USDC credit balance. Top up
        via `POST /x402/top-up`. When balance is insufficient, endpoints return
        `402` with structured top-up instructions.
      in: header
      name: SIGN-IN-WITH-X
      type: apiKey

````