Migrating from @openrouter/sdk to @openrouter/agent

Agent functionality (callModel, tool(), stop conditions, format converters, streaming helpers) has moved from @openrouter/sdk to the standalone @openrouter/agent package. The @openrouter/agent package includes its own OpenRouter client class, so you do not need @openrouter/sdk for agent use cases.

When This Applies

Migrate if your code imports any of these from @openrouter/sdk:

• callModel or uses client.callModel()
• tool() factory function
• Stop conditions: stepCountIs, hasToolCall, maxCost, maxTokensUsed, finishReasonIs
• Format converters: fromClaudeMessages, toClaudeMessage, fromChatMessages, toChatMessage
• Types: Tool, ToolWithExecute, ToolWithGenerator, ManualTool, CallModelInput, ModelResult

Quick Migration