Class: AgentHarness::Providers::Anthropic

Inherits:
Base
  • Object
show all
Defined in:
lib/agent_harness/providers/anthropic.rb

Overview

Anthropic Claude Code CLI provider

Provides integration with the Claude Code CLI tool for AI-powered coding assistance.

Examples:

Basic usage

provider = AgentHarness::Providers::Anthropic.new
response = provider.send_message(prompt: "Hello!")

Constant Summary collapse

MODEL_PATTERN =

Model name pattern for Anthropic Claude models

/^claude-[\d.-]+-(?:opus|sonnet|haiku)(?:-\d{8})?$/i
SUPPORTED_CLI_VERSION = 
"2.1.92"
SUPPORTED_CLI_REQUIREMENT = 
Gem::Requirement.new(">= #{SUPPORTED_CLI_VERSION}", "< 2.2.0").freeze
VALID_VERSION_PATTERN =

Matches semver (e.g. “2.1.92”), optional pre-release (e.g. “2.1.92-beta.1”), or channel tokens (e.g. “latest”, “stable”).

/\A(?:\d+\.\d+\.\d+(?:-[a-zA-Z0-9.]+)?|latest|stable)\z/

Constants inherited from Base

Base::COMMON_ERROR_PATTERNS, Base::DEFAULT_SMOKE_TEST_CONTRACT

Instance Attribute Summary

Attributes inherited from Base

#config, #executor, #logger

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Base

#configure, #initialize, #sandboxed_environment?

Methods included from Adapter

#health_status, included, metadata_package_name, normalize_metadata_installation, normalize_metadata_source_type, normalize_metadata_version_requirement, #parse_rate_limit_reset, #session_flags, #smoke_test, #smoke_test_contract, #supports_dangerous_mode?, #supports_sessions?, #validate_config, #validate_mcp_servers!

Constructor Details

This class inherits a constructor from AgentHarness::Providers::Base

Class Method Details

.available? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/agent_harness/providers/anthropic.rb', line 91

def available?
  executor = AgentHarness.configuration.command_executor
  !!executor.which(binary_name)
end

.binary_name ⇒ Object 



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# File 'lib/agent_harness/providers/anthropic.rb', line 31

def binary_name
  "claude"
end

.discover_models ⇒ Object 



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# File 'lib/agent_harness/providers/anthropic.rb', line 129

def discover_models
  return [] unless available?

  begin
    require "open3"
    output, _, status = Open3.capture3("claude", "models", "list", {timeout: 10})
    return [] unless status.success?

    parse_models_list(output)
  rescue => e
    AgentHarness.logger&.debug("[AgentHarness::Anthropic] Model discovery failed: #{e.message}")
    []
  end
end

.firewall_requirements ⇒ Object 



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# File 'lib/agent_harness/providers/anthropic.rb', line 108

def firewall_requirements
  {
    domains: [
      "api.anthropic.com",
      "claude.ai",
      "console.anthropic.com"
    ],
    ip_ranges: []
  }
end

.install_contract(version: nil) ⇒ Object 



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# File 'lib/agent_harness/providers/anthropic.rb', line 35

def install_contract(version: nil)
  target_version = version || SUPPORTED_CLI_VERSION
  validate_version!(target_version)
  version_requirement = SUPPORTED_CLI_REQUIREMENT.requirements
    .map { |op, ver| "#{op} #{ver}" }
    .join(", ")
  channel_token = %w[latest stable].include?(target_version.to_s)

  warning = "Review the downloaded installer before execution and verify any published checksum or signature metadata when available."
  if channel_token
    warning += " Channel '#{target_version}' is not pinned; the resolved version may fall " \
      "outside the supported range (#{version_requirement}). Verify the installed version " \
      "after installation."
  end

  {
    provider: provider_name,
    binary_name: binary_name,
    binary_paths: [
      "$HOME/.local/bin/claude",
      binary_name
    ],
    install: {
      strategy: :shell,
      source: "official",
      command: "tmp_script=$(mktemp) && trap 'rm -f \"$tmp_script\"' EXIT && curl -fsSL https://claude.ai/install.sh -o \"$tmp_script\" && bash \"$tmp_script\" #{Shellwords.shellescape(target_version)}",
      warning: warning,
      post_install_binary_path: "$HOME/.local/bin/claude",
      # When a channel token is used, include the requirement so
      # consumers can validate the installed version post-install.
      version_not_pinned: channel_token
    },
    supported_versions: {
      default: SUPPORTED_CLI_VERSION,
      requirement: version_requirement,
      channel: "stable"
    },
    runtime_contract: {
      available_via: binary_name,
      build_command: [
        binary_name,
        "--print",
        "--output-format=json"
      ],
      required_features: [
        "print_mode",
        "json_output",
        "mcp_config",
        "mcp_list",
        "dangerously_skip_permissions",
        "models_list"
      ]
    }
  }
end

.instruction_file_paths ⇒ Object 



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# File 'lib/agent_harness/providers/anthropic.rb', line 119

def instruction_file_paths
  [
    {
      path: "CLAUDE.md",
      description: "Claude Code CLI agent instructions",
      symlink: true
    }
  ]
end

.model_family(provider_model_name) ⇒ Object

Normalize a provider-specific model name to its model family



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# File 'lib/agent_harness/providers/anthropic.rb', line 145

def model_family(provider_model_name)
  provider_model_name.sub(/-\d{8}$/, "")
end

.provider_metadata_overrides ⇒ Object 



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# File 'lib/agent_harness/providers/anthropic.rb', line 96

def provider_metadata_overrides
  {
    auth: {
      service: :anthropic,
      api_family: :anthropic
    },
    identity: {
      bot_usernames: %w[claude anthropic]
    }
  }
end

.provider_model_name(family_name) ⇒ Object

Convert a model family name to the provider’s preferred model name



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# File 'lib/agent_harness/providers/anthropic.rb', line 150

def provider_model_name(family_name)
  family_name
end

.provider_name ⇒ Object 



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# File 'lib/agent_harness/providers/anthropic.rb', line 27

def provider_name
  :claude
end

.smoke_test_contract ⇒ Object 



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# File 'lib/agent_harness/providers/anthropic.rb', line 159

def smoke_test_contract
  Base::DEFAULT_SMOKE_TEST_CONTRACT
end

.supports_model_family?(family_name) ⇒ Boolean

Check if this provider supports a given model family

Returns:

  • (Boolean) 


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# File 'lib/agent_harness/providers/anthropic.rb', line 155

def supports_model_family?(family_name)
  MODEL_PATTERN.match?(family_name)
end

Instance Method Details

#auth_type ⇒ Object 



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# File 'lib/agent_harness/providers/anthropic.rb', line 315

def auth_type
  :oauth
end

#build_mcp_flags(mcp_servers, working_dir: nil) ⇒ Object 



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# File 'lib/agent_harness/providers/anthropic.rb', line 304

def build_mcp_flags(mcp_servers, working_dir: nil)
  return [] if mcp_servers.empty?

  config_path = write_mcp_config_file(mcp_servers, working_dir: working_dir)
  ["--mcp-config", config_path]
end

#capabilities ⇒ Object 



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# File 'lib/agent_harness/providers/anthropic.rb', line 278

def capabilities
  {
    streaming: true,
    file_upload: true,
    vision: true,
    tool_use: true,
    json_mode: true,
    mcp: true,
    dangerous_mode: true
  }
end

#configuration_schema ⇒ Object 



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# File 'lib/agent_harness/providers/anthropic.rb', line 261

def configuration_schema
  {
    fields: [
      {
        name: :model,
        type: :string,
        label: "Model",
        required: false,
        hint: "Claude model to use (e.g. claude-3-5-sonnet-20241022)",
        accepts_arbitrary: false
      }
    ],
    auth_modes: [:oauth],
    openai_compatible: false
  }
end

#dangerous_mode_flags ⇒ Object 



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# File 'lib/agent_harness/providers/anthropic.rb', line 311

def dangerous_mode_flags
  ["--dangerously-skip-permissions"]
end

#display_name ⇒ Object 



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# File 'lib/agent_harness/providers/anthropic.rb', line 257

def display_name
  "Anthropic Claude CLI"
end

#error_patterns ⇒ Object 



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# File 'lib/agent_harness/providers/anthropic.rb', line 332

def error_patterns
  {
    rate_limited: [
      /rate.?limit/i,
      /too.?many.?requests/i,
      /429/,
      /overloaded/i,
      /session.?limit/i
    ],
    auth_expired: [
      /oauth.*token.*expired/i,
      /authentication.*error/i,
      /invalid.*api.*key/i,
      /unauthorized/i,
      /401/,
      /session.*expired/i,
      /not.*logged.*in/i,
      /login.*required/i,
      /credentials.*expired/i
    ],
    quota_exceeded: [
      /quota.*exceeded/i,
      /usage.*limit/i,
      /credit.*exhausted/i
    ],
    transient: [
      /timeout/i,
      /connection.*reset/i,
      /temporary.*error/i,
      /service.*unavailable/i,
      /503/,
      /502/,
      /504/
    ],
    permanent: [
      /invalid.*model/i,
      /unsupported.*operation/i,
      /not.*found/i,
      /404/,
      /bad.*request/i,
      /400/,
      /model.*deprecated/i,
      /end-of-life/i
    ]
  }
end

#execution_semantics ⇒ Object 



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# File 'lib/agent_harness/providers/anthropic.rb', line 319

def execution_semantics
  {
    prompt_delivery: :arg,
    output_format: :json,
    sandbox_aware: true,
    uses_subcommand: false,
    non_interactive_flag: "--print",
    legitimate_exit_codes: [0],
    stderr_is_diagnostic: true,
    parses_rate_limit_reset: false
  }
end

#fetch_mcp_servers ⇒ Object 



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# File 'lib/agent_harness/providers/anthropic.rb', line 379

def fetch_mcp_servers
  return [] unless self.class.available?

  begin
    result = @executor.execute(["claude", "mcp", "list"], timeout: 5)
    return [] unless result.success?

    parse_claude_mcp_output(result.stdout)
  rescue => e
    log_debug("fetch_mcp_servers_failed", error: e.message)
    []
  end
end

#name ⇒ Object 



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# File 'lib/agent_harness/providers/anthropic.rb', line 253

def name
  "anthropic"
end

#send_message(prompt:, **options) ⇒ Object 



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# File 'lib/agent_harness/providers/anthropic.rb', line 290

def send_message(prompt:, **options)
  super
ensure
  cleanup_mcp_tempfiles!
end

#supported_mcp_transports ⇒ Object 



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# File 'lib/agent_harness/providers/anthropic.rb', line 300

def supported_mcp_transports
  %w[stdio http sse]
end

#supports_mcp? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/agent_harness/providers/anthropic.rb', line 296

def supports_mcp?
  true
end