OneDocumentation

Overview

A guide to the One API fundamentals

One provides powerful APIs that enable you to build, deploy, and scale AI agents with seamless access to over 250+ integrations and tools. Connect your AI to QuickBooks, Salesforce, HubSpot, Shopify, and more leading platforms through our Passthrough API to unlock real-time data and automation capabilities.

Passthrough API

The Passthrough API provides a single endpoint to access 25,000+ actions across all integrations.

  • Execute actions with QuickBooks, Salesforce, HubSpot, Shopify and more
  • Built-in authentication and connection management for all integrations
  • AI SDK support for LLM capabilities (Vercel AI SDK, LangChain, MCP, etc.)

Core API

Manage your integrations, connections, and credentials.

  • Connectors -- browse all available platforms and their capabilities
  • Actions -- discover and search available operations for each platform
  • Connections -- manage authenticated links to third-party accounts
  • Vault -- read-only view of connection metadata for dashboards and monitoring

AI Agents and Skills

Build and manage AI agents with custom configurations, tools, and reusable prompt templates.

  • Agents -- create agents with models, tools, memory, and triggers
  • Skills -- reusable prompt templates that can be attached to agents

Webhooks

Receive real-time events from connected platforms via relay endpoints and subscriptions.

  • Relay -- receive and forward inbound webhooks from external platforms
  • Subscriptions -- subscribe to event types and get notified at your URL
  • Events -- browse and debug received webhook payloads

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