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Gemini Trust Company Volume API

Public, unauthenticated prediction-market trade volume by category and UTC period.

Gemini Trust Company Volume API is one of 20 APIs that Gemini Trust Company publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

Tagged areas include Volume. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, and an API reference.

This API exposes 2 operations across 2 paths, and defines 4 schemas. It is described by OpenAPI 3.2.0, at version 1.0.0.

Requests are made against 2 base URLs: https://api.gemini.com, https://api.sandbox.gemini.com.

2 operations 2 paths 4 schemas 2 GET

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.2.0
API Version
1.0.0
Base URL
https://api.gemini.com
Authentication
API Key, API Key, API Key
Contact
Gemini API Support
Resource Areas
1

Authentication & Security 3

Gemini Trust Company Volume API declares 3 security schemes for authenticating requests. An API key is passed in the header as X-GEMINI-APIKEY (apiKey). An API key is passed in the header as X-GEMINI-PAYLOAD (payloadAuth). An API key is passed in the header as X-GEMINI-SIGNATURE (signatureAuth).

  • apiKey — Gemini API key with appropriate permissions
  • payloadAuth — Base64-encoded private REST payload. See Gemini private REST authentication.
  • signatureAuth — Hex HMAC-SHA384 signature of the payload using the API secret.

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.

Volume 2

Public, unauthenticated prediction-market trade volume by category and UTC period.

GET
/v1/prediction-markets/volume/{date}
Get daily prediction market trade volume
getPredictionMarketDailyVolume 1 param → 200400404503
GET
/v1/prediction-markets/volume/{date}/hourly
Get hourly prediction market trade volume
getPredictionMarketHourlyVolume 1 param → 200400404503

Schemas 4

The contract defines 4 schemas that model the data the API accepts and returns. The most detailed are PredictionMarketHourlyVolumeCategory (3 properties), Error (2 properties), PredictionMarketVolumeCategory (2 properties). Each schema is shown below with its type and property counts.

PredictionMarketVolumeCategory
object
2 properties 2 required
Error
object
2 properties
PredictionMarketHourlyVolumeCategory
object
3 properties 3 required
PredictionMarketVolumeDecimal
string
Non-negative decimal string. Preserve it as a string to avoid floating-point precision loss.

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

gemini-trust-volume-api-openapi.yml Raw ↑

Other APIs Gemini Trust Company publishes across the network.

Gemini WebSocket API
Gemini MCP Server
Gemini Trust Company Account Administration API
Gemini Trust Company Clearing API
Gemini Trust Company Combos API
Gemini Trust Company Derivatives API
Gemini Trust Company Fund Management API
Gemini Trust Company Instant API
Gemini Trust Company Margin Trading API
Gemini Trust Company Market Data API
Gemini Trust Company Markets API
Gemini Trust Company OAuth API
Where this information came from

This is an independent, third-party profile of Gemini Trust Company Volume API, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.

The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.

Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.

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