Connect customer-facing products
Let a workspace member approve access through OAuth and keep actions tied to their permissions
Integration
Build One Horizon into your own product or internal tool
Create a custom app, then add OAuth, webhooks, REST API calls, generated JavaScript clients, or an agent runtime based on the product flow you need.
Developer platform
Custom App
One Horizon
Connect customer-facing products
React when work changes
Read and update work from code
React when work changes
Use webhooks to start a sync, notify another system, or wake an agent after a workspace event
Read and update work from code
Call the REST API directly or use generated JavaScript clients from a Node.js or TypeScript service
Choose the integration pieces that fit your product
Start with the user flow, then add the authentication, events, API calls, and agent support it actually requires.
Add Log in with One Horizon
Register OAuth callbacks and let users approve access from your product or service.
Build event-driven integrations
Subscribe to selected workspace events and inspect delivery history while you test the receiving service.
Create agent-capable products
Use the API and agent contracts when your application needs to accept queued work and return results.
For product teams extending the platform
Use a custom app when an internal system, customer product, or agent needs a governed connection to One Horizon.
Customer workspace connection
Let a customer approve your app, then read or update the work they choose to expose
Internal system sync
React to workspace events and keep a trusted backend or operations tool current
Custom agent runtime
Register an agent that can claim queued work, run it, and report the result back
Build the integration your workflow needs
Create a One Horizon app and connect your product through OAuth, events, APIs, or agents.