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Build with One Horizon

Developer docs are for software that needs to work with a workspace: AI assistants, terminal workflows, internal services, customer-facing apps, and event-driven automation.

Building from your own app or automation? Start with the job: read or update workspace data, connect an AI assistant, run terminal workflows, sign users in, or react to events. Already know the REST route or webhook event? Open the API reference.

Agent execution has its own docs. For sending work to apps, running local agents, or building agents that claim queued work, start with the Agents & Workflows overview. Workflows covers agent-driven runs with human gates, branch handoff, and workflow-produced documents.

Pick the right surface

SurfaceBest for
MCPConnect AI assistants to workspace context and tools.
CLIWork from the terminal, inspect work, send items to coding tools, and run local agents.
API KeysAuthenticate trusted server-side API and SDK calls for one workspace.
REST APIRead or update workspace data from your app, service, script, or CI job.
JavaScript SDKGenerated TypeScript clients and types for Node.js.
OAuth AppsAdd Log in with One Horizon or Connect One Horizon to an app that needs user-approved workspace access.
WebhooksNotify a service when workspace events happen.

Building an agent?

Start with the Building Agents overview to choose a local or cloud execution model.

From there, choose Build your own agent for work that runs on your machine or Build a Cloud Agent for a shared service.

PreviousWindsurfNextMCP
Claude Code

Claude Code

Run Claude Code as a local agent worker, or connect Claude Code to One Horizon through MCP.

Custom app

Build a custom integration with OAuth apps, webhooks, the REST API, and the JavaScript SDK.

Cursor

Cursor

Let Cursor use One Horizon work as the brief through MCP or a local agent.

MCP tools

Every MCP tool the worker runtime can register for a turn, generated straight from the runtime tool catalog.

  • Pick the right surface
  • Building an agent?
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