cloudflare/agents agents@0.10.1

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Patch Changes

• #1286 d76f8b9 Thanks @threepointone! - Fix McpAgent.handleMcpMessage crashing with "Attempting to read .name before it was set" when the Durable Object wakes from hibernation via native DO RPC. The method now calls __unsafe_ensureInitialized() to hydrate this.name from storage and run onStart() before processing messages, matching the pattern used by _workflow_* RPC methods and alarm().

• #1278 8c7caab Thanks @threepointone! - Think now owns the inference loop with lifecycle hooks at every stage.

  Breaking: onChatMessage(), assembleContext(), and getMaxSteps() are removed. Use lifecycle hooks and the maxSteps property instead. If you need full custom inference, extend Agent directly.

  New lifecycle hooks: beforeTurn, beforeToolCall, afterToolCall, onStepFinish, onChunk — fire on every turn from all entry paths (WebSocket, chat(), saveMessages, auto-continuation).

  beforeTurn(ctx) receives the assembled system prompt, messages, tools, and model. Return a TurnConfig to override any part — model, system prompt, messages, tools, activeTools, toolChoice, maxSteps, providerOptions.

  maxSteps is now a property (default 10) instead of a method. Override per-turn via TurnConfig.maxSteps.

  MCP tools auto-merged — no need to manually merge this.mcp.getAITools() in getTools().

  Dynamic context blocks: Session.addContext() and Session.removeContext() allow adding/removing context blocks after session initialization (e.g., from extensions).

  Extension manifest expanded with context (namespaced context block declarations) and hooks fields.