0xArchive HIP-4 Outcomes - Instruments API
HIP-4 per-side instrument discovery (one row per `#N` coin). Each outcome has two sides: side 0 (Yes) and side 1 (No). Coins are `#`-prefixed. Data from May 2026.
0xArchive HIP-4 Outcomes - Instruments 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 - Instruments. 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 2 operations across 2 paths, and defines 5 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.
Metadata
The identity and technical contract details declared by the specification.
Authentication & Security 1
0xArchive HIP-4 Outcomes - Instruments 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 2
Across 2 paths, the API surfaces 2 operations — 2 GET. Each is listed below with its method, path, parameters, and response codes.
HIP-4 per-side instrument discovery (one row per N coin). Each outcome has two sides: side 0 (Yes) and side 1 (No). Coins are -prefixed. Data from May 2026.
Schemas 5
The contract defines 5 schemas that model the data the API accepts and returns. The most detailed are Hip4Outcome (21 properties), ApiMeta (5 properties), Error (4 properties), ApiResponseHip4Outcome (3 properties). Each schema is shown below with its type and property counts.
Specification
The full machine-readable OpenAPI contract behind this narrative.
Source
More from 0xArchive 12
Other APIs 0xArchive publishes across the network.
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