Build AI agents
in Swift.
Multi-provider SDK with tools, hooks, MCP, skills, and budget control. Drop it into any Swift project — macOS, iOS, server-side — and start shipping agents.
import OpenAgentSDK
let agent = createAgent(options: AgentOptions(
apiKey: "sk-...",
model: "claude-sonnet-4-6"
))
let result = await agent.prompt("Hello")
print(result.text)Features
Everything you need to ship an agent.
Multi-Provider
One interface across Anthropic, OpenAI, Ollama, and GLM. Swap providers without touching agent code.
Streaming
Stream partial text, tool calls, and final results as async events. First token in milliseconds.
Custom Tools
Define tools with a single declarative call. Type-safe inputs, structured outputs, automatic schema.
MCP Integration
Connect to any Model Context Protocol server over stdio or SSE. Tools and resources auto-discovered.
Hook System
preToolUse and postToolUse hooks for audit logs, guards, telemetry, and side effects.
Budget Control
Per-run permission policies and token / cost budgets. Stop agents before they over-spend.
Install
Add it to your project.
Use Swift Package Manager from the command line, or add it through Xcode's package dependencies panel. Requires Swift 5.9+.
Full install guide.package(url: "https://github.com/terryso/open-agent-sdk-swift", from: "0.1.0")