> ## Documentation Index
> Fetch the complete documentation index at: https://docs.agentwallex.com/llms.txt
> Use this file to discover all available pages before exploring further.

# x402 세션으로 결제

> 기존 세션 예산을 사용하여 결제합니다.

### 경로 매개변수

<ParamField path="id" type="string" required>
  결제에 사용할 세션 ID (예: `sess_xyz789`).
</ParamField>

### 요청 본문

<ParamField body="target_url" type="string" required>
  결제할 x402 지원 URL.
</ParamField>

### 예시

<CodeGroup>
  ```bash cURL theme={null}
  curl -X POST https://api.agentwallex.com/api/v1/x402/sessions/sess_xyz789/pay \
    -H "X-API-Key: awx_your_api_key" \
    -H "Content-Type: application/json" \
    -d '{
      "target_url": "https://paid-api.example.com/v1/data"
    }'
  ```

  ```typescript TypeScript theme={null}
  await aw.x402.sessionPay("sess_xyz789", {
    targetUrl: "https://paid-api.example.com/v1/data",
  });
  ```
</CodeGroup>


## OpenAPI

````yaml POST /api/v1/x402/sessions/{id}/pay
openapi: 3.1.0
info:
  title: AgentWallex API
  description: >-
    REST API for managing AI agent wallets, on-chain transactions, spending
    policies, webhooks, and x402 micropayments.
  version: 1.0.0
  contact:
    name: AgentWallex Support
    url: https://agentwallex.com
servers:
  - url: https://api.agentwallex.com
    description: Production
  - url: https://api-sandbox.agentwallex.com
    description: Sandbox
security:
  - ApiKeyAuth: []
  - BearerAuth: []
tags:
  - name: Agents
    description: Create and manage AI agent wallets.
  - name: Transactions
    description: Send payments and query transaction history.
  - name: Policies
    description: Configure spending limits and access controls.
  - name: Webhooks
    description: Register and manage webhook endpoints.
  - name: x402
    description: x402 micropayment negotiation and session management.
paths:
  /api/v1/x402/sessions/{id}/pay:
    post:
      tags:
        - x402
      summary: Pay with x402 Session
      description: Make a payment using an existing session budget.
      operationId: x402SessionPay
      parameters:
        - name: id
          in: path
          required: true
          description: The session ID to pay from (e.g., `sess_xyz789`).
          schema:
            type: string
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
                - target_url
              properties:
                target_url:
                  type: string
                  format: uri
                  description: The x402-enabled URL to pay for.
            example:
              target_url: https://paid-api.example.com/v1/data
      responses:
        '200':
          description: Session payment completed successfully.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/X402PayResult'
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '403':
          $ref: '#/components/responses/Forbidden'
        '404':
          $ref: '#/components/responses/NotFound'
        '429':
          $ref: '#/components/responses/RateLimited'
        '500':
          $ref: '#/components/responses/InternalError'
components:
  schemas:
    X402PayResult:
      type: object
      description: Result of an x402 payment negotiation.
      properties:
        ledger_id:
          type: string
          description: Internal ledger entry ID for this payment.
        amount:
          type: string
          description: Payment amount.
        fee_amount:
          type: string
          description: Platform fee deducted.
        fee_rate:
          type: string
          description: Fee percentage applied (based on tiered pricing).
        token:
          type: string
          description: Token used for payment (e.g., `USDC`).
        chain:
          type: string
          description: Chain used for settlement.
        status:
          type: string
          enum:
            - completed
            - pending
            - failed
          description: Payment status.
        payment_signature:
          type: string
          description: >-
            The `PAYMENT-SIGNATURE` value to include in the retry request to the
            target URL.
    ErrorResponse:
      type: object
      description: Standard error response.
      required:
        - code
        - type
        - message
      properties:
        code:
          type: string
          description: Machine-readable error code.
        type:
          type: string
          enum:
            - invalid_request_error
            - authentication_error
            - authorization_error
            - not_found_error
            - rate_limit_error
            - internal_error
          description: Error type category.
        message:
          type: string
          description: Human-readable error description.
  responses:
    BadRequest:
      description: Invalid request body or parameters.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
          example:
            code: invalid_request
            type: invalid_request_error
            message: The request body is missing required fields.
    Unauthorized:
      description: Missing or invalid credentials.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
          example:
            code: authentication_failed
            type: authentication_error
            message: The provided API key is invalid or expired.
    Forbidden:
      description: Insufficient permissions.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
          example:
            code: insufficient_permissions
            type: authorization_error
            message: You do not have permission to perform this action.
    NotFound:
      description: Resource does not exist.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
          example:
            code: resource_not_found
            type: not_found_error
            message: The requested resource was not found.
    RateLimited:
      description: Rate limit exceeded.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
          example:
            code: rate_limit_exceeded
            type: rate_limit_error
            message: Too many requests. Please retry after a short delay.
    InternalError:
      description: Server-side error.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
          example:
            code: server_error
            type: internal_error
            message: An unexpected error occurred. Please try again later.
  securitySchemes:
    ApiKeyAuth:
      type: apiKey
      in: header
      name: X-API-Key
      description: API key authentication. Keys are prefixed with `awx_`.
    BearerAuth:
      type: http
      scheme: bearer
      bearerFormat: JWT
      description: JWT bearer token authentication.

````