v0.6.0

Added

• :mcp_servers module map format - Pass Hermes modules with custom environment variables ([63d4b72])
  • Simple form: %{"tools" => MyApp.MCPServer}
  • Extended form with env: %{"tools" => %{module: MyApp.MCPServer, env: %{"DEBUG" => "1"}}}
  • Custom env is merged with defaults (MIX_ENV: "prod"), can override MIX_ENV
  • Updated MCP docs to recommend mcp_servers as the primary configuration method
• :json_schema option - JSON Schema for structured output validation ([485513f])
  • Accepts a map (auto-encoded to JSON) or pre-encoded JSON string
  • Maps to --json-schema CLI flag
• :max_budget_usd option - Maximum dollar amount to spend on API calls ([5bf996a])
  • Accepts float or integer values
  • Maps to --max-budget-usd CLI flag
• :tools option - Specify available tools from the built-in set ([5bf996a])
  • Use :default for all tools, [] to disable all, or a list of tool names
  • Maps to --tools CLI flag
• :agent option - Agent name for the session ([5bf996a])
  • Different from :agents which defines custom agent configurations
  • Maps to --agent CLI flag
• :betas option - Beta headers to include in API requests ([5bf996a])
  • Accepts a list of beta feature names
  • Maps to --betas CLI flag

Removed

• query_async/3 - Removed push-based async API in favor of query_stream/3
  • query_stream/3 provides a more idiomatic Elixir Stream-based API
  • For push-based messaging (LiveView, GenServers), wrap query_stream/3 in a Task
  • See Phoenix integration guide for migration examples
• Advanced Streaming API - Removed low-level streaming functions
  • receive_messages/2 - Use query_stream/3 instead
  • receive_response/2 - Use query_stream/3 |> ClaudeCode.Stream.until_result() instead
  • interrupt/2 - To cancel, use Task.shutdown/2 on the consuming task

Changed

• ClaudeCode.Stream - Now uses pull-based messaging internally instead of process mailbox