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

# Initiate a funding transaction

> Pulls funds from a verified source into a Sly wallet. Always include `idempotency_key` — duplicate funding is the most expensive bug class.



## OpenAPI

````yaml /api-reference/openapi.json post /v1/funding/transactions
openapi: 3.1.0
info:
  title: Sly API
  description: >-
    The Agentic Economy Platform — stablecoin payments, agent wallets,
    multi-protocol commerce, and AI agent orchestration.
  version: 1.0.0
  contact:
    name: Sly
    url: https://getsly.ai
    email: support@getsly.ai
servers:
  - url: https://api.getsly.ai/v1
    description: Production
  - url: https://sandbox.getsly.ai/v1
    description: Sandbox
security:
  - bearerAuth: []
paths:
  /v1/funding/transactions:
    post:
      tags:
        - Funding
      summary: Initiate a funding transaction
      description: >-
        Pulls funds from a verified source into a Sly wallet. Always include
        `idempotency_key` — duplicate funding is the most expensive bug class.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/InitiateFundingInput'
      responses:
        '201':
          description: Initiated
          content:
            application/json:
              schema:
                type: object
                properties:
                  data:
                    $ref: '#/components/schemas/FundingTransaction'
                required:
                  - data
        '400':
          description: Validation error
          content:
            application/json:
              schema:
                allOf:
                  - $ref: '#/components/schemas/Error'
                  - properties:
                      error:
                        type: string
                      code:
                        type: string
                      details: {}
        '402':
          description: Source declined or insufficient
          content:
            application/json:
              schema:
                allOf:
                  - $ref: '#/components/schemas/Error'
                  - properties:
                      error:
                        type: string
                      code:
                        type: string
                      details: {}
        '409':
          description: Source unverified or idempotency-key collision
          content:
            application/json:
              schema:
                allOf:
                  - $ref: '#/components/schemas/Error'
                  - properties:
                      error:
                        type: string
                      code:
                        type: string
                      details: {}
      security:
        - bearerAuth: []
components:
  schemas:
    InitiateFundingInput:
      type: object
      properties:
        source_id:
          type: string
        wallet_id:
          type: string
          format: uuid
        amount_cents:
          type: integer
          exclusiveMinimum: 0
          maximum: 100000000
        currency:
          type: string
          minLength: 3
          maxLength: 4
        destination_currency:
          type: string
        conversion_quote_id:
          type: string
        idempotency_key:
          type: string
      required:
        - source_id
        - amount_cents
        - currency
    FundingTransaction:
      type: object
      properties:
        id:
          type: string
        source_id:
          type: string
        wallet_id:
          type:
            - string
            - 'null'
          format: uuid
        amount_cents:
          type: integer
        currency:
          type: string
        destination_currency:
          type:
            - string
            - 'null'
        status:
          type: string
          enum:
            - pending
            - processing
            - completed
            - failed
        fees:
          type: object
          properties:
            provider:
              type: integer
            sly:
              type: integer
            total:
              type: integer
          required:
            - provider
            - sly
            - total
        estimated_settlement:
          type:
            - string
            - 'null'
          format: date-time
        failure_reason:
          type:
            - string
            - 'null'
        created_at:
          type: string
          format: date-time
        completed_at:
          type:
            - string
            - 'null'
          format: date-time
      required:
        - id
        - source_id
        - amount_cents
        - currency
        - status
        - fees
        - created_at
    Error:
      type: object
      properties:
        error:
          type: string
        code:
          type: string
        details: {}
        request_id:
          type: string
      required:
        - error
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      description: >-
        API key (pk_test_* or pk_live_*), JWT session, agent token (agent_*),
        Ed25519 session (sess_*), or portal token (portal_*).

````