Gemini Trust Company

Gemini Trust Company Markets API

Public endpoints for browsing prediction markets. **Market Data:** Use these REST endpoints to discover active events and each contract's `instrumentSymbol` (e.g., `GEMI-FEDJAN26-DN25`). For active trading and market making, prefer [Prediction Markets WebSocket streams](/prediction-markets/websocket/streams) with that `instrumentSymbol`. - [List Events](/rest-api/prediction-markets/events/list-events) - Discover active events and instrument symbols - [Prediction Markets WebSocket Streams](/prediction-markets/websocket/streams) - Stream prices, depth, order events, and positions

GitHub OpenAPI

Operations 7

Each operation below carries the questions people ask an LLM about it and the instructions they give an agent to run it. Generated by API Evangelist overlay

GET /v1/prediction-markets/events Browse and search prediction market events · List prediction market events #
Ask an LLM
“What prediction market events can I bet on right now?”
“Can I search events by title or filter them to one sport?”
Tell an agent
Search prediction market events for {search}.
List {status} events in category {category}.
GET /v1/prediction-markets/events/{eventTicker} Get a prediction market event by ticker · Get event by ticker #
Ask an LLM
“What contracts are available inside a specific event?”
“Does a game event include child events with their own contracts?”
Tell an agent
Show the full details of event {eventTicker}.
List the contracts in prediction event {eventTicker}.
GET /v1/prediction-markets/events/{eventTicker}/strike Get the strike price for an event · Get strike price for event #
Ask an LLM
“What strike price was set for a crypto Up/Down contract?”
“When does the strike become available for a short-window crypto event?”
Tell an agent
Get the strike price for event {eventTicker}.
Check whether the strike for {eventTicker} has been set yet.
GET /v1/prediction-markets/events/newly-listed List events listed in the last 24 hours · List newly listed events #
Ask an LLM
“Which prediction events were added in the last day?”
“Are there any new markets for a particular sport today?”
Tell an agent
Show events newly listed in the past 24 hours.
List newly created {sport} events.
GET /v1/prediction-markets/events/recently-settled List events settled in the last 24 hours · List recently settled events #
Ask an LLM
“Which prediction markets resolved in the last day?”
“Can I see recently settled events in one category?”
Tell an agent
Show events that settled in the past 24 hours.
List recently resolved events in {category}.
GET /v1/prediction-markets/events/upcoming List approved events that have not launched · List upcoming events #
Ask an LLM
“What prediction markets are approved but not trading yet?”
“Which upcoming events start soonest?”
Tell an agent
List upcoming pre-launch events, soonest first.
Show upcoming {sport} events that haven't opened yet.
GET /v1/prediction-markets/categories List prediction market event categories · List event categories #
Ask an LLM
“What categories of prediction events exist?”
“Which categories currently have active events?”
Tell an agent
List all event categories.
Show categories that have {status} events.

Documentation

📖
Documentation
https://developer.gemini.com/rest-api/rest-api
📖
APIReference
https://developer.gemini.com/rest
📖
Documentation
https://developer.gemini.com/rest-api/prediction-markets
📖
APIReference
https://developer.gemini.com/prediction-markets-spec

Specifications

⚙
OpenAPI
https://raw.githubusercontent.com/api-evangelist/gemini-trust/refs/heads/main/openapi/gemini-trust-markets-api-openapi.yml

Other Resources

🔗
ErrorCatalog
https://raw.githubusercontent.com/api-evangelist/gemini-trust/refs/heads/main/errors/gemini-trust-problem-types.yml
🔗
DataModel
https://raw.githubusercontent.com/api-evangelist/gemini-trust/refs/heads/main/data-model/gemini-trust-data-model.yml

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OpenAPI Specification

gemini-trust-markets-api-openapi.yml Raw ↑ 
openapi: 3.2.0
info:
  title: Gemini Prediction Markets API
  description: 'API for trading prediction market contracts on Gemini.


    **Note:** Only fields documented in this specification are considered stable. Undocumented fields in API responses may change or be removed without notice.'
  version: 1.0.0
  contact:
    name: Gemini API Support
servers:
- url: https://api.gemini.com
  description: Production
- url: https://api.sandbox.gemini.com
  description: Sandbox
tags:


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# Full source: https://raw.githubusercontent.com/api-evangelist/gemini-trust/refs/heads/main/openapi/gemini-trust-markets-api-openapi.yml