---
title: "Simulate a funding event in Sandbox."
method: POST
path: "/v1/funding_events/simulate"
tags: ["Funding Events"]
---

# Simulate a funding event in Sandbox.

`POST /v1/funding_events/simulate`

Simulate a funding event for testing. This endpoint can only be used in the sandbox environment.

## Headers

- `Straddle-Account-Id` string, uuid
- `Request-Id` string
- `Correlation-Id` string
- `Idempotency-Key` string

## Request body

- CreateFundingEventV1Request
  - `funding_event_job_type` 'charges' | 'payouts', required — Supported job types are Charges and Payouts
  - `sandbox_outcome` 'standard' | 'paid' | 'on_hold_daily_limit' | 'cancelled_for_fraud_risk' | 'cancelled_for_balance_check' | 'failed_insufficient_funds' | 'reversed_insufficient_funds' | 'failed_customer_dispute' | 'reversed_customer_dispute' | 'failed_closed_bank_account' | 'reversed_closed_bank_account' — Payment will simulate processing if not Standard.

## Response `201`

Created

- CreateFundingEventV1ResponseItemResponse
  - `meta` ResponseMetadata, required — Metadata about the API request, including an identifier and timestamp.
    - `api_request_id` string, uuid, required — Unique identifier for this API request, useful for troubleshooting.
    - `api_request_timestamp` string, date-time, required — Timestamp for this API request, useful for troubleshooting.
  - `response_type` 'object' | 'array' | 'error' | 'none', required — Indicates the structure of the returned content. - "object" means the `data` field contains a single JSON object. - "array" means the `data` field contains an array of objects. - "error" means the `data` field contains an error object with details of the issue. - "none" means no data is returned.
  - `data` CreateFundingEventV1Response, required
    - `id` string, uuid, required — ID of the created funding event.

## Other responses

- `400` — Bad Request
- `401` — Unauthorized
- `403` — Forbidden
- `422` — Validation Failed
- `500` — Server Error

## Changes

- **2026-01-22** `4c4191aab91d` — 39 breaking, 72 info
  - removed the enum value `CancelledForBalanceCheck` of the request property `sandbox_outcome` (media type: application/json)
  - removed the enum value `CancelledForBalanceCheck` of the request property `sandbox_outcome` (media type: text/json)
  - removed the enum value `CancelledForBalanceCheck` of the request property `sandbox_outcome` (media type: application/*+json)
  - removed the enum value `CancelledForFraudRisk` of the request property `sandbox_outcome` (media type: application/json)
  - …107 more
- **2026-01-22** `f9fe2a77d949` — 72 warning, 39 info
  - added the new `Array` enum value to the `response_type` response property for the response status `201` (media type: text/plain)
  - added the new `Array` enum value to the `response_type` response property for the response status `201` (media type: application/json)
  - added the new `Array` enum value to the `response_type` response property for the response status `201` (media type: text/json)
  - added the new `Array` enum value to the `response_type` response property for the response status `400` (media type: text/plain)
  - …107 more
- …earlier changes not shown

[Full history](https://skmtc.dev/straddleio/apis/straddle-api/changes/v1/funding_events/simulate/post.md)

---

[API](https://skmtc.dev/straddleio/apis/straddle-api.md) · [All operations](https://skmtc.dev/straddleio/apis/straddle-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/straddleio/straddle-api/revisions/6e13cd88cda9/schema)