generated: '2026-07-20'
method: searched
source:
- https://r2-api-docs.readme.io/reference/post_sandbox-scenarios-1
- https://r2-api-docs.readme.io/docs/overview
summary: >-
  R2 provides a dedicated development (sandbox) environment with its own
  credentials and a scenario-seeding endpoint for setting up test merchants,
  offers, financings, and applications.
environments:
  separation: R2 issues two credential sets (keyId + JWTSecret) — one for dev, one for prod.
  dev_host: https://gateway-dev.r2capital.co/v2/
  access_request: Email partners@r2.co to obtain dev and prod credentials.
scenario_endpoint:
  method: POST
  path: /sandbox/scenarios
  auth: JWT token without a merchant id
  description: >-
    Creates or restores merchants and creates offers, financings, and
    applications based on a supplied scenario + metadata (e.g. seed_offers).
  example_response:
    scenario: seed_offers
    items:
    - id: 12e56130-8e25-4ac4-97a4-c981dd5f366c
      disbursement_amount:
        currencyCode: USD
        amountE5: 25000000
      repayment_rate: 20.5
      status: AVAILABLE
      expires_at: 1730851200000
webhook_testing:
  note: >-
    Callback URLs can be verified from the Partners web UI with a test button
    that triggers a test event; the handler must return HTTP 200 with body
    "R2 API Event Received".
  dev_webhook_source_ip: 54.151.119.16/32