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0xArchive

0xArchive HIP-4 Outcomes - Outcomes API

HIP-4 outcome market discovery (one row per outcome, both sides combined). Use these to enumerate live and settled binary outcome markets. Data from May 2026.

Documentation Provider Profile APIs.io OpenAPI GitHub

0xArchive HIP-4 Outcomes - Outcomes API is one of 55 APIs that 0xArchive publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

Tagged areas include HIP-4 Outcomes - Outcomes. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, a getting-started guide, authentication docs, and rate-limit docs.

This API exposes 3 operations across 3 paths, and defines 7 schemas. It is described by OpenAPI 3.2.0, at version 1.6.1.

Requests are made against a single base URL, https://api.0xarchive.io.

3 operations 3 paths 7 schemas 3 GET

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.2.0
API Version
1.6.1
Base URL
https://api.0xarchive.io
Authentication
API Key
Contact
0xArchive Support
License
Proprietary
Terms of Service
View terms
Resource Areas
1

Authentication & Security 1

0xArchive HIP-4 Outcomes - Outcomes API declares 1 security scheme for authenticating requests. An API key is passed in the header as X-API-Key (ApiKeyAuth). By default, every request must be authenticated.

  • ApiKeyAuth — API key for authentication. Get yours at https://0xarchive.io/dashboard

Paths & Operations 3

Across 3 paths, the API surfaces 3 operations — 3 GET. Each is listed below with its method, path, parameters, and response codes.

HIP-4 Outcomes - Outcomes 3

HIP-4 outcome market discovery (one row per outcome, both sides combined). Use these to enumerate live and settled binary outcome markets. Data from May 2026.

GET
/v1/hyperliquid/hip4/outcomes
List HIP-4 outcomes
listHip4Outcomes 3 params → 200400401429
GET
/v1/hyperliquid/hip4/outcomes/{outcome_id}
Get HIP-4 outcome detail
getHip4Outcome 1 param → 200400401404429
GET
/v1/hyperliquid/hip4/outcomes/by-slug/{slug}
Get HIP-4 outcome by slug
getHip4OutcomeBySlug 1 param → 200400401429

Schemas 7

The contract defines 7 schemas that model the data the API accepts and returns. The most detailed are Hip4OutcomeAggregate (13 properties), Hip4AggregatedOi (9 properties), ApiMeta (5 properties), Error (4 properties). Each schema is shown below with its type and property counts.

Hip4SideSpec
object
Per-side spec nested in Hip4OutcomeAggregate.sidespecs. One element per side (typically two: side 0 = Yes, side 1 = No).
4 properties 4 required
ApiMeta
object
Response metadata
5 properties
Hip4OutcomeAggregate
object
Per-outcome aggregate (both sides combined). Returned by /outcomes (list, without aggregatedoi) and /outcomes/{outcomeid} (detail, with aggregatedoi populated).
13 properties 3 required
Error
object
Error response
4 properties
ApiResponseHip4OutcomeAggregate
object
API response wrapping a single HIP-4 outcome aggregate (with aggregatedoi populated on the detail endpoint)
3 properties
Hip4AggregatedOi
object
Derived OI display fields combining both sides of a HIP-4 outcome. Currency is always USDH (Hyperliquid's stablecoin). Only populated on /outcomes/{outcomeid}…
9 properties 1 required
ApiResponseHip4OutcomeAggregateArray
object
API response wrapping an array of HIP-4 outcome aggregates (without aggregatedoi; use /outcomes/{outcomeid} for the detail variant)
3 properties

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

0xarchive-hip-4-outcomes-outcomes-api-openapi.yml Raw ↑

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#HIP-4 Outcomes - Outcomes
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API Details
ID
0xarchive:0xarchive-hip-4-outcomes-outcomes-api
Base URL
https://api.0xarchive.io
Docs
https://docs.0xarchive.io/rest-api
Provider
0xArchive
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