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Market makers on 1st interact with the exchange through a dedicated market making API. The API provides programmatic access to:
  • Order placement and cancellation
  • Order book data
  • Trade execution and fills
  • Account and position information
All market making on 1st is expected to be conducted through this API.

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Market making API documentation

Full technical documentation, including endpoints, authentication, and examples, is available here: https://docs.1st.app/mms-api Market makers should review the API documentation before onboarding and integrate according to the requirements defined in the market making agreement.