Use the published 2026-10-29 request and response contract.
The REST API pages in this selection are generated from the
2026-10-29 OpenAPI specification.
This is the first published date-based contract.
Set api_version=2026-10-29 in the playground and in your client. Selecting these
docs does not pin outgoing requests. Omitting the parameter uses latest.
The response includes Qfex-Api-Version: 2026-10-29. Continue using ordinary
endpoint paths on https://api.qfex.com; /contracts/2026-10-29/ serves contract
metadata, not trading or account endpoints.See API versioning for selection rules and upgrades,
API keys for authentication, and the
API changelog for release notes. Shared integration guides,
Funding API documentation, and WebSocket documentation are available under the
Latest selection and are not historical copies.
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