API & Developers
Build with Tier9
RESTful API, webhooks, and embeddable widgets. Integrate forecasting into your applications, dashboards, and workflows.
RESTful API
Full CRUD access to questions, forecasts, and analytics data.
Webhooks
Real-time event notifications for forecasts, resolutions, and alerts.
Embeddable Widgets
Drop forecast displays and submission forms into any webpage.
Secure by Default
API keys, OAuth 2.0, rate limiting, and audit logging.
API Reference
REST Endpoints
Base URL: https://api.tier9forecast.com/v1
GET
/api/v1/questionsList all questions with filtering and pagination
GET
/api/v1/questions/:idGet question details including current probability
POST
/api/v1/forecastsSubmit a new forecast for a question
GET
/api/v1/forecastsList forecasts with user and question filtering
GET
/api/v1/users/:id/statsGet user accuracy stats and calibration data
GET
/api/v1/risk-dashboardGet aggregated risk metrics by domain
SDKs & Resources
Official client libraries and integration guides.
Python SDK
pip install tier9-forecast
JavaScript SDK
npm install @tier9/forecast
OpenAPI Spec
Download YAML/JSON
Ready to integrate?
Request API access and we'll get you started with documentation and sandbox credentials.