Module: RubyClaude

Defined in:
lib/ruby_claude.rb,
lib/ruby_claude/event.rb,
lib/ruby_claude/client.rb,
lib/ruby_claude/errors.rb,
lib/ruby_claude/runner.rb,
lib/ruby_claude/command.rb,
lib/ruby_claude/session.rb,
lib/ruby_claude/version.rb,
lib/ruby_claude/response.rb,
lib/ruby_claude/configuration.rb

Overview

Ruby Claude — a subscription-authenticated Ruby SDK that talks to Claude by shelling out to the Claude Code CLI (+claude -p+) in headless mode.

It is an unofficial, community wrapper around a supported headless feature. By default it strips ANTHROPIC_API_KEY from the child environment so calls draw on the logged-in Pro/Max subscription rather than API billing.

Examples:

One-shot

puts RubyClaude.query("Summarize lib/foo.rb in two sentences")

A configured client

client = RubyClaude::Client.new(model: "claude-sonnet-4-6", timeout: 180)
client.query("What does this project do?").text

Defined Under Namespace

Classes: AuthenticationError, BinaryNotFoundError, Client, Command, Configuration, Error, Event, ExecutionError, ParseError, Response, RunResult, Runner, Session, TimeoutError

Constant Summary collapse

VERSION =

The released version of the gem, following Semantic Versioning.

"0.0.1"

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Attribute Details

#cost_usd ⇒ Float (readonly)

Returns total cost in USD (often 0.0 on a subscription).

Returns:

  • (Float) —

    total cost in USD (often 0.0 on a subscription)



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# File 'lib/ruby_claude/event.rb', line 20

Event = Data.define(:type, :text, :session_id, :cost_usd, :duration_ms, :raw) do
  # Build an Event from one parsed NDJSON line.
  #
  # @param data [Hash, nil] the parsed line
  # @return [Event]
  def self.from_hash(data)
    data ||= {}
    new(
      type: (data["type"] || "unknown").to_sym,
      text: extract_text(data),
      session_id: data["session_id"],
      cost_usd: data["total_cost_usd"],
      duration_ms: data["duration_ms"],
      raw: data
    )
  end

  # Pull human-readable text out of a parsed line, if any.
  #
  # @param data [Hash]
  # @return [String, nil]
  def self.extract_text(data)
    case data["type"]
    when "assistant", "user"
      message = data["message"] || data
      text_from_content(message["content"])
    when "result"
      data["result"]
    end
  end

  # Join the text from a content array (or pass a bare string through).
  #
  # @param content [String, Array, nil]
  # @return [String, nil]
  def self.text_from_content(content)
    return content if content.is_a?(String)
    return nil unless content.is_a?(Array)

    texts = content
            .select { |block| block.is_a?(Hash) && block["type"] == "text" }
            .filter_map { |block| block["text"] }
    texts.empty? ? nil : texts.join
  end

  # @return [Boolean] whether this is the final result event
  def result? = type == :result

  # @return [Boolean] whether this is an assistant message event
  def assistant? = type == :assistant

  # @return [Boolean] whether this is a system event
  def system? = type == :system

  # @return [Boolean] whether this is a user message event
  def user? = type == :user
end

#duration_ms ⇒ Integer (readonly)

Returns wall-clock duration in milliseconds.

Returns:

  • (Integer) —

    wall-clock duration in milliseconds



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# File 'lib/ruby_claude/event.rb', line 20

Event = Data.define(:type, :text, :session_id, :cost_usd, :duration_ms, :raw) do
  # Build an Event from one parsed NDJSON line.
  #
  # @param data [Hash, nil] the parsed line
  # @return [Event]
  def self.from_hash(data)
    data ||= {}
    new(
      type: (data["type"] || "unknown").to_sym,
      text: extract_text(data),
      session_id: data["session_id"],
      cost_usd: data["total_cost_usd"],
      duration_ms: data["duration_ms"],
      raw: data
    )
  end

  # Pull human-readable text out of a parsed line, if any.
  #
  # @param data [Hash]
  # @return [String, nil]
  def self.extract_text(data)
    case data["type"]
    when "assistant", "user"
      message = data["message"] || data
      text_from_content(message["content"])
    when "result"
      data["result"]
    end
  end

  # Join the text from a content array (or pass a bare string through).
  #
  # @param content [String, Array, nil]
  # @return [String, nil]
  def self.text_from_content(content)
    return content if content.is_a?(String)
    return nil unless content.is_a?(Array)

    texts = content
            .select { |block| block.is_a?(Hash) && block["type"] == "text" }
            .filter_map { |block| block["text"] }
    texts.empty? ? nil : texts.join
  end

  # @return [Boolean] whether this is the final result event
  def result? = type == :result

  # @return [Boolean] whether this is an assistant message event
  def assistant? = type == :assistant

  # @return [Boolean] whether this is a system event
  def system? = type == :system

  # @return [Boolean] whether this is a user message event
  def user? = type == :user
end

#error ⇒ Boolean (readonly)

Returns whether the CLI reported an error.

Returns:

  • (Boolean) —

    whether the CLI reported an error



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# File 'lib/ruby_claude/response.rb', line 26

Response = Data.define(:text, :session_id, :cost_usd, :usage,
                       :num_turns, :duration_ms, :error, :raw) do
  # Build a Response from a parsed CLI result hash.
  #
  # @param data [Hash, nil] the parsed result object
  # @return [Response]
  def self.from_result(data)
    data ||= {}
    new(
      text: data["result"] || "",
      session_id: data["session_id"],
      cost_usd: (data["total_cost_usd"] || data["cost_usd"] || 0.0).to_f,
      usage: data["usage"] || {},
      num_turns: (data["num_turns"] || 0).to_i,
      duration_ms: (data["duration_ms"] || 0).to_i,
      error: data.fetch("is_error", false) ? true : false,
      raw: data
    )
  end

  # @return [Boolean] whether the result represents an error
  def error? = !!error

  # @return [Boolean] whether the result was successful
  def success? = !error?

  # Returns the assistant text, so +puts response+ prints the answer.
  #
  # @return [String]
  def to_s = text
end

#exit_status ⇒ Integer? (readonly)

Returns exit code, or nil if the process was signalled.

Returns:

  • (Integer, nil) —

    exit code, or nil if the process was signalled



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# File 'lib/ruby_claude/runner.rb', line 14

RunResult = Data.define(:stdout, :stderr, :exit_status)

#num_turns ⇒ Integer (readonly)

Returns number of agentic turns.

Returns:

  • (Integer) —

    number of agentic turns



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# File 'lib/ruby_claude/response.rb', line 26

Response = Data.define(:text, :session_id, :cost_usd, :usage,
                       :num_turns, :duration_ms, :error, :raw) do
  # Build a Response from a parsed CLI result hash.
  #
  # @param data [Hash, nil] the parsed result object
  # @return [Response]
  def self.from_result(data)
    data ||= {}
    new(
      text: data["result"] || "",
      session_id: data["session_id"],
      cost_usd: (data["total_cost_usd"] || data["cost_usd"] || 0.0).to_f,
      usage: data["usage"] || {},
      num_turns: (data["num_turns"] || 0).to_i,
      duration_ms: (data["duration_ms"] || 0).to_i,
      error: data.fetch("is_error", false) ? true : false,
      raw: data
    )
  end

  # @return [Boolean] whether the result represents an error
  def error? = !!error

  # @return [Boolean] whether the result was successful
  def success? = !error?

  # Returns the assistant text, so +puts response+ prints the answer.
  #
  # @return [String]
  def to_s = text
end

#raw ⇒ Hash (readonly)

Returns the full parsed result object.

Returns:

  • (Hash) —

    the full parsed result object



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# File 'lib/ruby_claude/event.rb', line 20

Event = Data.define(:type, :text, :session_id, :cost_usd, :duration_ms, :raw) do
  # Build an Event from one parsed NDJSON line.
  #
  # @param data [Hash, nil] the parsed line
  # @return [Event]
  def self.from_hash(data)
    data ||= {}
    new(
      type: (data["type"] || "unknown").to_sym,
      text: extract_text(data),
      session_id: data["session_id"],
      cost_usd: data["total_cost_usd"],
      duration_ms: data["duration_ms"],
      raw: data
    )
  end

  # Pull human-readable text out of a parsed line, if any.
  #
  # @param data [Hash]
  # @return [String, nil]
  def self.extract_text(data)
    case data["type"]
    when "assistant", "user"
      message = data["message"] || data
      text_from_content(message["content"])
    when "result"
      data["result"]
    end
  end

  # Join the text from a content array (or pass a bare string through).
  #
  # @param content [String, Array, nil]
  # @return [String, nil]
  def self.text_from_content(content)
    return content if content.is_a?(String)
    return nil unless content.is_a?(Array)

    texts = content
            .select { |block| block.is_a?(Hash) && block["type"] == "text" }
            .filter_map { |block| block["text"] }
    texts.empty? ? nil : texts.join
  end

  # @return [Boolean] whether this is the final result event
  def result? = type == :result

  # @return [Boolean] whether this is an assistant message event
  def assistant? = type == :assistant

  # @return [Boolean] whether this is a system event
  def system? = type == :system

  # @return [Boolean] whether this is a user message event
  def user? = type == :user
end

#session_id ⇒ String? (readonly)

Returns the session id of this conversation.

Returns:

  • (String, nil) —

    the session id of this conversation



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# File 'lib/ruby_claude/event.rb', line 20

Event = Data.define(:type, :text, :session_id, :cost_usd, :duration_ms, :raw) do
  # Build an Event from one parsed NDJSON line.
  #
  # @param data [Hash, nil] the parsed line
  # @return [Event]
  def self.from_hash(data)
    data ||= {}
    new(
      type: (data["type"] || "unknown").to_sym,
      text: extract_text(data),
      session_id: data["session_id"],
      cost_usd: data["total_cost_usd"],
      duration_ms: data["duration_ms"],
      raw: data
    )
  end

  # Pull human-readable text out of a parsed line, if any.
  #
  # @param data [Hash]
  # @return [String, nil]
  def self.extract_text(data)
    case data["type"]
    when "assistant", "user"
      message = data["message"] || data
      text_from_content(message["content"])
    when "result"
      data["result"]
    end
  end

  # Join the text from a content array (or pass a bare string through).
  #
  # @param content [String, Array, nil]
  # @return [String, nil]
  def self.text_from_content(content)
    return content if content.is_a?(String)
    return nil unless content.is_a?(Array)

    texts = content
            .select { |block| block.is_a?(Hash) && block["type"] == "text" }
            .filter_map { |block| block["text"] }
    texts.empty? ? nil : texts.join
  end

  # @return [Boolean] whether this is the final result event
  def result? = type == :result

  # @return [Boolean] whether this is an assistant message event
  def assistant? = type == :assistant

  # @return [Boolean] whether this is a system event
  def system? = type == :system

  # @return [Boolean] whether this is a user message event
  def user? = type == :user
end

#stderr ⇒ String (readonly)

Returns captured stderr.

Returns:

  • (String) —

    captured stderr



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# File 'lib/ruby_claude/runner.rb', line 14

RunResult = Data.define(:stdout, :stderr, :exit_status)

#stdout ⇒ String? (readonly)

Returns captured stdout (nil when streaming).

Returns:

  • (String, nil) —

    captured stdout (nil when streaming)



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# File 'lib/ruby_claude/runner.rb', line 14

RunResult = Data.define(:stdout, :stderr, :exit_status)

#text ⇒ String (readonly)

Returns the assistant’s final text result.

Returns:

  • (String) —

    the assistant’s final text result



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# File 'lib/ruby_claude/event.rb', line 20

Event = Data.define(:type, :text, :session_id, :cost_usd, :duration_ms, :raw) do
  # Build an Event from one parsed NDJSON line.
  #
  # @param data [Hash, nil] the parsed line
  # @return [Event]
  def self.from_hash(data)
    data ||= {}
    new(
      type: (data["type"] || "unknown").to_sym,
      text: extract_text(data),
      session_id: data["session_id"],
      cost_usd: data["total_cost_usd"],
      duration_ms: data["duration_ms"],
      raw: data
    )
  end

  # Pull human-readable text out of a parsed line, if any.
  #
  # @param data [Hash]
  # @return [String, nil]
  def self.extract_text(data)
    case data["type"]
    when "assistant", "user"
      message = data["message"] || data
      text_from_content(message["content"])
    when "result"
      data["result"]
    end
  end

  # Join the text from a content array (or pass a bare string through).
  #
  # @param content [String, Array, nil]
  # @return [String, nil]
  def self.text_from_content(content)
    return content if content.is_a?(String)
    return nil unless content.is_a?(Array)

    texts = content
            .select { |block| block.is_a?(Hash) && block["type"] == "text" }
            .filter_map { |block| block["text"] }
    texts.empty? ? nil : texts.join
  end

  # @return [Boolean] whether this is the final result event
  def result? = type == :result

  # @return [Boolean] whether this is an assistant message event
  def assistant? = type == :assistant

  # @return [Boolean] whether this is a system event
  def system? = type == :system

  # @return [Boolean] whether this is a user message event
  def user? = type == :user
end

#type ⇒ Symbol (readonly)

Returns the event type.

Returns:

  • (Symbol) —

    the event type



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# File 'lib/ruby_claude/event.rb', line 20

Event = Data.define(:type, :text, :session_id, :cost_usd, :duration_ms, :raw) do
  # Build an Event from one parsed NDJSON line.
  #
  # @param data [Hash, nil] the parsed line
  # @return [Event]
  def self.from_hash(data)
    data ||= {}
    new(
      type: (data["type"] || "unknown").to_sym,
      text: extract_text(data),
      session_id: data["session_id"],
      cost_usd: data["total_cost_usd"],
      duration_ms: data["duration_ms"],
      raw: data
    )
  end

  # Pull human-readable text out of a parsed line, if any.
  #
  # @param data [Hash]
  # @return [String, nil]
  def self.extract_text(data)
    case data["type"]
    when "assistant", "user"
      message = data["message"] || data
      text_from_content(message["content"])
    when "result"
      data["result"]
    end
  end

  # Join the text from a content array (or pass a bare string through).
  #
  # @param content [String, Array, nil]
  # @return [String, nil]
  def self.text_from_content(content)
    return content if content.is_a?(String)
    return nil unless content.is_a?(Array)

    texts = content
            .select { |block| block.is_a?(Hash) && block["type"] == "text" }
            .filter_map { |block| block["text"] }
    texts.empty? ? nil : texts.join
  end

  # @return [Boolean] whether this is the final result event
  def result? = type == :result

  # @return [Boolean] whether this is an assistant message event
  def assistant? = type == :assistant

  # @return [Boolean] whether this is a system event
  def system? = type == :system

  # @return [Boolean] whether this is a user message event
  def user? = type == :user
end

#usage ⇒ Hash (readonly)

Returns token usage counts, when present.

Returns:

  • (Hash) —

    token usage counts, when present



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# File 'lib/ruby_claude/response.rb', line 26

Response = Data.define(:text, :session_id, :cost_usd, :usage,
                       :num_turns, :duration_ms, :error, :raw) do
  # Build a Response from a parsed CLI result hash.
  #
  # @param data [Hash, nil] the parsed result object
  # @return [Response]
  def self.from_result(data)
    data ||= {}
    new(
      text: data["result"] || "",
      session_id: data["session_id"],
      cost_usd: (data["total_cost_usd"] || data["cost_usd"] || 0.0).to_f,
      usage: data["usage"] || {},
      num_turns: (data["num_turns"] || 0).to_i,
      duration_ms: (data["duration_ms"] || 0).to_i,
      error: data.fetch("is_error", false) ? true : false,
      raw: data
    )
  end

  # @return [Boolean] whether the result represents an error
  def error? = !!error

  # @return [Boolean] whether the result was successful
  def success? = !error?

  # Returns the assistant text, so +puts response+ prints the answer.
  #
  # @return [String]
  def to_s = text
end

Class Method Details

.configuration ⇒ Configuration

The global configuration used by query and as the default for new Client instances.

Returns:



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# File 'lib/ruby_claude.rb', line 32

def configuration
  @configuration ||= Configuration.new
end

.configure {|config| ... } ⇒ Configuration

Configure the global defaults.

Yield Parameters:

Returns:



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# File 'lib/ruby_claude.rb', line 40

def configure
  yield configuration if block_given?
  @default_client = nil # rebuild with the new configuration on next use
  configuration
end

.default_client ⇒ Client

The memoized default Client, rebuilt whenever configure is called.

Returns:



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# File 'lib/ruby_claude.rb', line 66

def default_client
  @default_client ||= Client.new
end

.query(prompt, **options) ⇒ Response

One-shot convenience that delegates to a memoized default Client.

Parameters:

Returns:



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# File 'lib/ruby_claude.rb', line 59

def query(prompt, **options)
  default_client.query(prompt, **options)
end

.reset_configuration! ⇒ void

This method returns an undefined value.

Reset all global state. Mainly useful in tests.



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# File 'lib/ruby_claude.rb', line 49

def reset_configuration!
  @configuration = Configuration.new
  @default_client = nil
end