Config Reference

Every profile field maps 1:1 to a Claude Code environment variable. The YAML field name is the lowercased env var name.

For the full official documentation, see code.claude.com/docs/en/env-vars.

How fields work

String fields are set as-is when non-empty.
Bool fields emit "1" when true, and are skipped when false.
The env: map is an escape hatch for any env var not covered by a named field.

Priority order

When a profile is launched, environment variables are applied in this order (later wins):

Global env: block (top-level, applies to all profiles)
Profile struct fields (the named YAML fields below)
Profile env: block (per-profile escape hatch)

Authentication & Routing

YAML field	Env var	Type
`anthropic_api_key`	`ANTHROPIC_API_KEY`	string
`anthropic_auth_token`	`ANTHROPIC_AUTH_TOKEN`	string
`anthropic_base_url`	`ANTHROPIC_BASE_URL`	string
`anthropic_custom_headers`	`ANTHROPIC_CUSTOM_HEADERS`	string
`anthropic_betas`	`ANTHROPIC_BETAS`	string
`claude_code_oauth_token`	`CLAUDE_CODE_OAUTH_TOKEN`	string
`claude_code_oauth_refresh_token`	`CLAUDE_CODE_OAUTH_REFRESH_TOKEN`	string
`claude_code_oauth_scopes`	`CLAUDE_CODE_OAUTH_SCOPES`	string
`claude_code_api_key_helper_ttl_ms`	`CLAUDE_CODE_API_KEY_HELPER_TTL_MS`	string
`claude_config_dir`	`CLAUDE_CONFIG_DIR`	string
`claude_project_dir`	`CLAUDE_PROJECT_DIR`	string

Model Selection

YAML field	Env var	Type
`anthropic_model`	`ANTHROPIC_MODEL`	string
`anthropic_default_opus_model`	`ANTHROPIC_DEFAULT_OPUS_MODEL`	string
`anthropic_default_sonnet_model`	`ANTHROPIC_DEFAULT_SONNET_MODEL`	string
`anthropic_default_haiku_model`	`ANTHROPIC_DEFAULT_HAIKU_MODEL`	string
`claude_code_subagent_model`	`CLAUDE_CODE_SUBAGENT_MODEL`	string
`claude_code_effort_level`	`CLAUDE_CODE_EFFORT_LEVEL`	string
`claude_effort`	`CLAUDE_EFFORT`	string
`anthropic_small_fast_model`	`ANTHROPIC_SMALL_FAST_MODEL`	string
`anthropic_small_fast_model_aws_region`	`ANTHROPIC_SMALL_FAST_MODEL_AWS_REGION`	string

Model Display Overrides

YAML field	Env var	Type
`anthropic_custom_model_option`	`ANTHROPIC_CUSTOM_MODEL_OPTION`	string
`anthropic_custom_model_option_name`	`ANTHROPIC_CUSTOM_MODEL_OPTION_NAME`	string
`anthropic_custom_model_option_description`	`ANTHROPIC_CUSTOM_MODEL_OPTION_DESCRIPTION`	string
`anthropic_custom_model_option_supported_capabilities`	`ANTHROPIC_CUSTOM_MODEL_OPTION_SUPPORTED_CAPABILITIES`	string
`anthropic_default_opus_model_name`	`ANTHROPIC_DEFAULT_OPUS_MODEL_NAME`	string
`anthropic_default_opus_model_description`	`ANTHROPIC_DEFAULT_OPUS_MODEL_DESCRIPTION`	string
`anthropic_default_opus_model_supported_capabilities`	`ANTHROPIC_DEFAULT_OPUS_MODEL_SUPPORTED_CAPABILITIES`	string
`anthropic_default_sonnet_model_name`	`ANTHROPIC_DEFAULT_SONNET_MODEL_NAME`	string
`anthropic_default_sonnet_model_description`	`ANTHROPIC_DEFAULT_SONNET_MODEL_DESCRIPTION`	string
`anthropic_default_sonnet_model_supported_capabilities`	`ANTHROPIC_DEFAULT_SONNET_MODEL_SUPPORTED_CAPABILITIES`	string
`anthropic_default_haiku_model_name`	`ANTHROPIC_DEFAULT_HAIKU_MODEL_NAME`	string
`anthropic_default_haiku_model_description`	`ANTHROPIC_DEFAULT_HAIKU_MODEL_DESCRIPTION`	string
`anthropic_default_haiku_model_supported_capabilities`	`ANTHROPIC_DEFAULT_HAIKU_MODEL_SUPPORTED_CAPABILITIES`	string

First-Party Cloud Providers

YAML field	Env var	Type
`claude_code_use_bedrock`	`CLAUDE_CODE_USE_BEDROCK`	bool
`claude_code_use_vertex`	`CLAUDE_CODE_USE_VERTEX`	bool
`claude_code_use_foundry`	`CLAUDE_CODE_USE_FOUNDRY`	bool
`claude_code_use_mantle`	`CLAUDE_CODE_USE_MANTLE`	bool
`anthropic_bedrock_base_url`	`ANTHROPIC_BEDROCK_BASE_URL`	string
`anthropic_bedrock_mantle_base_url`	`ANTHROPIC_BEDROCK_MANTLE_BASE_URL`	string
`anthropic_bedrock_service_tier`	`ANTHROPIC_BEDROCK_SERVICE_TIER`	string
`aws_bearer_token_bedrock`	`AWS_BEARER_TOKEN_BEDROCK`	string
`claude_code_skip_bedrock_auth`	`CLAUDE_CODE_SKIP_BEDROCK_AUTH`	bool
`claude_code_skip_mantle_auth`	`CLAUDE_CODE_SKIP_MANTLE_AUTH`	bool
`anthropic_vertex_base_url`	`ANTHROPIC_VERTEX_BASE_URL`	string
`anthropic_vertex_project_id`	`ANTHROPIC_VERTEX_PROJECT_ID`	string
`claude_code_skip_vertex_auth`	`CLAUDE_CODE_SKIP_VERTEX_AUTH`	bool
`anthropic_foundry_base_url`	`ANTHROPIC_FOUNDRY_BASE_URL`	string
`anthropic_foundry_resource`	`ANTHROPIC_FOUNDRY_RESOURCE`	string
`anthropic_foundry_api_key`	`ANTHROPIC_FOUNDRY_API_KEY`	string
`claude_code_skip_foundry_auth`	`CLAUDE_CODE_SKIP_FOUNDRY_AUTH`	bool

Context, Thinking, Retries

YAML field	Env var	Type
`max_thinking_tokens`	`MAX_THINKING_TOKENS`	string
`claude_code_disable_thinking`	`CLAUDE_CODE_DISABLE_THINKING`	bool
`claude_code_disable_adaptive_thinking`	`CLAUDE_CODE_DISABLE_ADAPTIVE_THINKING`	bool
`disable_interleaved_thinking`	`DISABLE_INTERLEAVED_THINKING`	bool
`claude_code_max_context_tokens`	`CLAUDE_CODE_MAX_CONTEXT_TOKENS`	string
`claude_code_max_output_tokens`	`CLAUDE_CODE_MAX_OUTPUT_TOKENS`	string
`claude_code_disable_1m_context`	`CLAUDE_CODE_DISABLE_1M_CONTEXT`	bool
`claude_code_max_retries`	`CLAUDE_CODE_MAX_RETRIES`	string
`claude_autocompact_pct_override`	`CLAUDE_AUTOCOMPACT_PCT_OVERRIDE`	string
`disable_auto_compact`	`DISABLE_AUTO_COMPACT`	bool
`disable_compact`	`DISABLE_COMPACT`	bool
`claude_code_auto_compact_window`	`CLAUDE_CODE_AUTO_COMPACT_WINDOW`	string
`claude_code_file_read_max_output_tokens`	`CLAUDE_CODE_FILE_READ_MAX_OUTPUT_TOKENS`	string

Streaming, Timeouts, Networking

YAML field	Env var	Type
`api_timeout_ms`	`API_TIMEOUT_MS`	string
`claude_stream_idle_timeout_ms`	`CLAUDE_STREAM_IDLE_TIMEOUT_MS`	string
`claude_enable_stream_watchdog`	`CLAUDE_ENABLE_STREAM_WATCHDOG`	bool
`claude_enable_byte_watchdog`	`CLAUDE_ENABLE_BYTE_WATCHDOG`	string
`claude_code_disable_nonstreaming_fallback`	`CLAUDE_CODE_DISABLE_NONSTREAMING_FALLBACK`	bool
`http_proxy`	`HTTP_PROXY`	string
`https_proxy`	`HTTPS_PROXY`	string
`no_proxy`	`NO_PROXY`	string
`claude_code_proxy_resolves_hosts`	`CLAUDE_CODE_PROXY_RESOLVES_HOSTS`	bool
`claude_code_cert_store`	`CLAUDE_CODE_CERT_STORE`	string
`claude_code_client_cert`	`CLAUDE_CODE_CLIENT_CERT`	string
`claude_code_client_key`	`CLAUDE_CODE_CLIENT_KEY`	string
`claude_code_client_key_passphrase`	`CLAUDE_CODE_CLIENT_KEY_PASSPHRASE`	string
`claude_code_attribution_header`	`CLAUDE_CODE_ATTRIBUTION_HEADER`	string
`claude_code_extra_body`	`CLAUDE_CODE_EXTRA_BODY`	string
`claude_code_enable_fine_grained_tool_streaming`	`CLAUDE_CODE_ENABLE_FINE_GRAINED_TOOL_STREAMING`	string
`claude_code_enable_gateway_model_discovery`	`CLAUDE_CODE_ENABLE_GATEWAY_MODEL_DISCOVERY`	bool
`claude_code_disable_legacy_model_remap`	`CLAUDE_CODE_DISABLE_LEGACY_MODEL_REMAP`	bool
`fallback_for_all_primary_models`	`FALLBACK_FOR_ALL_PRIMARY_MODELS`	string

MCP & Tools

YAML field	Env var	Type
`enable_tool_search`	`ENABLE_TOOL_SEARCH`	string
`max_mcp_output_tokens`	`MAX_MCP_OUTPUT_TOKENS`	string
`mcp_timeout`	`MCP_TIMEOUT`	string
`mcp_connect_timeout_ms`	`MCP_CONNECT_TIMEOUT_MS`	string
`mcp_tool_timeout`	`MCP_TOOL_TIMEOUT`	string
`mcp_client_secret`	`MCP_CLIENT_SECRET`	string
`mcp_oauth_callback_port`	`MCP_OAUTH_CALLBACK_PORT`	string
`mcp_connection_nonblocking`	`MCP_CONNECTION_NONBLOCKING`	string
`mcp_remote_server_connection_batch_size`	`MCP_REMOTE_SERVER_CONNECTION_BATCH_SIZE`	string
`mcp_server_connection_batch_size`	`MCP_SERVER_CONNECTION_BATCH_SIZE`	string
`claude_code_max_tool_use_concurrency`	`CLAUDE_CODE_MAX_TOOL_USE_CONCURRENCY`	string
`bash_default_timeout_ms`	`BASH_DEFAULT_TIMEOUT_MS`	string
`bash_max_timeout_ms`	`BASH_MAX_TIMEOUT_MS`	string
`bash_max_output_length`	`BASH_MAX_OUTPUT_LENGTH`	string
`task_max_output_length`	`TASK_MAX_OUTPUT_LENGTH`	string
`claude_code_use_powershell_tool`	`CLAUDE_CODE_USE_POWERSHELL_TOOL`	string
`claude_code_mcp_allowlist_env`	`CLAUDE_CODE_MCP_ALLOWLIST_ENV`	bool
`enable_claudeai_mcp_servers`	`ENABLE_CLAUDEAI_MCP_SERVERS`	string
`claude_code_use_native_file_search`	`CLAUDE_CODE_USE_NATIVE_FILE_SEARCH`	bool
`use_builtin_ripgrep`	`USE_BUILTIN_RIPGREP`	string
`slash_command_tool_char_budget`	`SLASH_COMMAND_TOOL_CHAR_BUDGET`	string

Caching

YAML field	Env var	Type
`disable_prompt_caching`	`DISABLE_PROMPT_CACHING`	bool
`disable_prompt_caching_haiku`	`DISABLE_PROMPT_CACHING_HAIKU`	bool
`disable_prompt_caching_opus`	`DISABLE_PROMPT_CACHING_OPUS`	bool
`disable_prompt_caching_sonnet`	`DISABLE_PROMPT_CACHING_SONNET`	bool
`enable_prompt_caching_1h`	`ENABLE_PROMPT_CACHING_1H`	bool
`force_prompt_caching_5m`	`FORCE_PROMPT_CACHING_5M`	bool

Plugins, Hooks, Skills, Agents

YAML field	Env var	Type
`claude_code_plugin_cache_dir`	`CLAUDE_CODE_PLUGIN_CACHE_DIR`	string
`claude_code_plugin_git_timeout_ms`	`CLAUDE_CODE_PLUGIN_GIT_TIMEOUT_MS`	string
`claude_code_plugin_seed_dir`	`CLAUDE_CODE_PLUGIN_SEED_DIR`	string
`claude_code_disable_official_marketplace_autoinstall`	`CLAUDE_CODE_DISABLE_OFFICIAL_MARKETPLACE_AUTOINSTALL`	bool
`claude_code_plugin_keep_marketplace_on_failure`	`CLAUDE_CODE_PLUGIN_KEEP_MARKETPLACE_ON_FAILURE`	bool
`claude_code_sync_plugin_install`	`CLAUDE_CODE_SYNC_PLUGIN_INSTALL`	bool
`claude_code_sync_plugin_install_timeout_ms`	`CLAUDE_CODE_SYNC_PLUGIN_INSTALL_TIMEOUT_MS`	string
`claude_code_enable_background_plugin_refresh`	`CLAUDE_CODE_ENABLE_BACKGROUND_PLUGIN_REFRESH`	bool
`force_autoupdate_plugins`	`FORCE_AUTOUPDATE_PLUGINS`	bool
`claude_code_experimental_agent_teams`	`CLAUDE_CODE_EXPERIMENTAL_AGENT_TEAMS`	bool
`claude_agent_sdk_disable_builtin_agents`	`CLAUDE_AGENT_SDK_DISABLE_BUILTIN_AGENTS`	bool
`claude_agent_sdk_mcp_no_prefix`	`CLAUDE_AGENT_SDK_MCP_NO_PREFIX`	bool
`claude_code_sessionend_hooks_timeout_ms`	`CLAUDE_CODE_SESSIONEND_HOOKS_TIMEOUT_MS`	string
`claude_code_fork_subagent`	`CLAUDE_CODE_FORK_SUBAGENT`	bool
`claude_async_agent_stall_timeout_ms`	`CLAUDE_ASYNC_AGENT_STALL_TIMEOUT_MS`	string
`claude_auto_background_tasks`	`CLAUDE_AUTO_BACKGROUND_TASKS`	bool
`claude_code_disable_background_tasks`	`CLAUDE_CODE_DISABLE_BACKGROUND_TASKS`	bool
`claude_code_new_init`	`CLAUDE_CODE_NEW_INIT`	bool
`claude_code_disable_policy_skills`	`CLAUDE_CODE_DISABLE_POLICY_SKILLS`	bool

Telemetry & Observability

YAML field	Env var	Type
`claude_code_enable_telemetry`	`CLAUDE_CODE_ENABLE_TELEMETRY`	bool
`disable_telemetry`	`DISABLE_TELEMETRY`	bool
`disable_error_reporting`	`DISABLE_ERROR_REPORTING`	bool
`do_not_track`	`DO_NOT_TRACK`	bool
`otel_log_user_prompts`	`OTEL_LOG_USER_PROMPTS`	bool
`otel_log_tool_content`	`OTEL_LOG_TOOL_CONTENT`	bool
`otel_log_tool_details`	`OTEL_LOG_TOOL_DETAILS`	bool
`otel_log_raw_api_bodies`	`OTEL_LOG_RAW_API_BODIES`	string
`otel_metrics_include_account_uuid`	`OTEL_METRICS_INCLUDE_ACCOUNT_UUID`	string
`otel_metrics_include_session_id`	`OTEL_METRICS_INCLUDE_SESSION_ID`	string
`otel_metrics_include_version`	`OTEL_METRICS_INCLUDE_VERSION`	string
`claude_code_otel_flush_timeout_ms`	`CLAUDE_CODE_OTEL_FLUSH_TIMEOUT_MS`	string
`claude_code_otel_headers_helper_debounce_ms`	`CLAUDE_CODE_OTEL_HEADERS_HELPER_DEBOUNCE_MS`	string
`claude_code_otel_shutdown_timeout_ms`	`CLAUDE_CODE_OTEL_SHUTDOWN_TIMEOUT_MS`	string
`otel_exporter_otlp_endpoint`	`OTEL_EXPORTER_OTLP_ENDPOINT`	string
`otel_exporter_otlp_headers`	`OTEL_EXPORTER_OTLP_HEADERS`	string
`otel_exporter_otlp_protocol`	`OTEL_EXPORTER_OTLP_PROTOCOL`	string
`otel_logs_exporter`	`OTEL_LOGS_EXPORTER`	string
`otel_metrics_exporter`	`OTEL_METRICS_EXPORTER`	string
`otel_metric_export_interval`	`OTEL_METRIC_EXPORT_INTERVAL`	string
`otel_resource_attributes`	`OTEL_RESOURCE_ATTRIBUTES`	string

Privacy, Kill-switches, Behavior Toggles

YAML field	Env var	Type
`claude_code_disable_nonessential_traffic`	`CLAUDE_CODE_DISABLE_NONESSENTIAL_TRAFFIC`	bool
`disable_autoupdater`	`DISABLE_AUTOUPDATER`	bool
`disable_updates`	`DISABLE_UPDATES`	bool
`disable_feedback_command`	`DISABLE_FEEDBACK_COMMAND`	bool
`claude_code_disable_feedback_survey`	`CLAUDE_CODE_DISABLE_FEEDBACK_SURVEY`	bool
`claude_code_skip_prompt_history`	`CLAUDE_CODE_SKIP_PROMPT_HISTORY`	bool
`claude_code_subprocess_env_scrub`	`CLAUDE_CODE_SUBPROCESS_ENV_SCRUB`	bool
`claude_code_script_caps`	`CLAUDE_CODE_SCRIPT_CAPS`	string
`claude_code_disable_claude_mds`	`CLAUDE_CODE_DISABLE_CLAUDE_MDS`	bool
`claude_code_disable_auto_memory`	`CLAUDE_CODE_DISABLE_AUTO_MEMORY`	string
`claude_code_disable_cron`	`CLAUDE_CODE_DISABLE_CRON`	bool
`claude_code_disable_file_checkpointing`	`CLAUDE_CODE_DISABLE_FILE_CHECKPOINTING`	bool
`claude_code_disable_fast_mode`	`CLAUDE_CODE_DISABLE_FAST_MODE`	bool
`claude_code_disable_experimental_betas`	`CLAUDE_CODE_DISABLE_EXPERIMENTAL_BETAS`	bool
`claude_code_simple`	`CLAUDE_CODE_SIMPLE`	bool
`claude_code_simple_system_prompt`	`CLAUDE_CODE_SIMPLE_SYSTEM_PROMPT`	bool
`claude_code_resume_interrupted_turn`	`CLAUDE_CODE_RESUME_INTERRUPTED_TURN`	bool
`claude_code_exit_after_stop_delay`	`CLAUDE_CODE_EXIT_AFTER_STOP_DELAY`	string
`claude_code_perforce_mode`	`CLAUDE_CODE_PERFORCE_MODE`	bool
`claude_code_disable_git_instructions`	`CLAUDE_CODE_DISABLE_GIT_INSTRUCTIONS`	bool
`disable_cost_warnings`	`DISABLE_COST_WARNINGS`	bool
`disable_doctor_command`	`DISABLE_DOCTOR_COMMAND`	bool
`disable_extra_usage_command`	`DISABLE_EXTRA_USAGE_COMMAND`	bool
`disable_install_github_app_command`	`DISABLE_INSTALL_GITHUB_APP_COMMAND`	bool
`disable_login_command`	`DISABLE_LOGIN_COMMAND`	bool
`disable_logout_command`	`DISABLE_LOGOUT_COMMAND`	bool
`disable_upgrade_command`	`DISABLE_UPGRADE_COMMAND`	bool
`disable_installation_checks`	`DISABLE_INSTALLATION_CHECKS`	bool
`disable_bug_command`	`DISABLE_BUG_COMMAND`	bool
`disable_growthbook`	`DISABLE_GROWTHBOOK`	bool
`max_structured_output_retries`	`MAX_STRUCTURED_OUTPUT_RETRIES`	string
`claude_code_enable_tasks`	`CLAUDE_CODE_ENABLE_TASKS`	bool
`claude_code_task_list_id`	`CLAUDE_CODE_TASK_LIST_ID`	string
`claude_code_enable_away_summary`	`CLAUDE_CODE_ENABLE_AWAY_SUMMARY`	string
`claude_code_enable_prompt_suggestion`	`CLAUDE_CODE_ENABLE_PROMPT_SUGGESTION`	string
`is_demo`	`IS_DEMO`	bool
`ccr_force_bundle`	`CCR_FORCE_BUNDLE`	bool
`claude_code_additional_directories_claude_md`	`CLAUDE_CODE_ADDITIONAL_DIRECTORIES_CLAUDE_MD`	bool
`claude_bash_maintain_project_working_dir`	`CLAUDE_BASH_MAINTAIN_PROJECT_WORKING_DIR`	bool

UI & Display

YAML field	Env var	Type
`claude_code_no_flicker`	`CLAUDE_CODE_NO_FLICKER`	bool
`claude_code_disable_alternate_screen`	`CLAUDE_CODE_DISABLE_ALTERNATE_SCREEN`	bool
`claude_code_disable_virtual_scroll`	`CLAUDE_CODE_DISABLE_VIRTUAL_SCROLL`	bool
`claude_code_disable_mouse`	`CLAUDE_CODE_DISABLE_MOUSE`	bool
`claude_code_scroll_speed`	`CLAUDE_CODE_SCROLL_SPEED`	string
`claude_code_force_sync_output`	`CLAUDE_CODE_FORCE_SYNC_OUTPUT`	bool
`claude_code_tmux_truecolor`	`CLAUDE_CODE_TMUX_TRUECOLOR`	bool
`claude_code_syntax_highlight`	`CLAUDE_CODE_SYNTAX_HIGHLIGHT`	string
`claude_code_accessibility`	`CLAUDE_CODE_ACCESSIBILITY`	bool
`claude_code_hide_cwd`	`CLAUDE_CODE_HIDE_CWD`	bool
`claude_code_disable_terminal_title`	`CLAUDE_CODE_DISABLE_TERMINAL_TITLE`	bool
`claude_code_disable_attachments`	`CLAUDE_CODE_DISABLE_ATTACHMENTS`	bool
`claude_code_native_cursor`	`CLAUDE_CODE_NATIVE_CURSOR`	bool

System

YAML field	Env var	Type
`claude_code_shell`	`CLAUDE_CODE_SHELL`	string
`claude_code_shell_prefix`	`CLAUDE_CODE_SHELL_PREFIX`	string
`claude_code_git_bash_path`	`CLAUDE_CODE_GIT_BASH_PATH`	string
`claude_code_tmpdir`	`CLAUDE_CODE_TMPDIR`	string
`claude_env_file`	`CLAUDE_ENV_FILE`	string
`claude_code_package_manager_auto_update`	`CLAUDE_CODE_PACKAGE_MANAGER_AUTO_UPDATE`	bool
`claude_code_debug_logs_dir`	`CLAUDE_CODE_DEBUG_LOGS_DIR`	string
`claude_code_debug_log_level`	`CLAUDE_CODE_DEBUG_LOG_LEVEL`	string
`claude_code_glob_hidden`	`CLAUDE_CODE_GLOB_HIDDEN`	string
`claude_code_glob_no_ignore`	`CLAUDE_CODE_GLOB_NO_IGNORE`	string
`claude_code_glob_timeout_seconds`	`CLAUDE_CODE_GLOB_TIMEOUT_SECONDS`	string

IDE

YAML field	Env var	Type
`claude_code_auto_connect_ide`	`CLAUDE_CODE_AUTO_CONNECT_IDE`	string
`claude_code_ide_host_override`	`CLAUDE_CODE_IDE_HOST_OVERRIDE`	string
`claude_code_ide_skip_auto_install`	`CLAUDE_CODE_IDE_SKIP_AUTO_INSTALL`	bool
`claude_code_ide_skip_valid_check`	`CLAUDE_CODE_IDE_SKIP_VALID_CHECK`	bool

Remote Control

YAML field	Env var	Type
`claude_remote_control_session_name_prefix`	`CLAUDE_REMOTE_CONTROL_SESSION_NAME_PREFIX`	string

Vertex Regions

YAML field	Env var	Type
`vertex_region_claude_3_5_haiku`	`VERTEX_REGION_CLAUDE_3_5_HAIKU`	string
`vertex_region_claude_3_5_sonnet`	`VERTEX_REGION_CLAUDE_3_5_SONNET`	string
`vertex_region_claude_3_7_sonnet`	`VERTEX_REGION_CLAUDE_3_7_SONNET`	string
`vertex_region_claude_4_0_opus`	`VERTEX_REGION_CLAUDE_4_0_OPUS`	string
`vertex_region_claude_4_0_sonnet`	`VERTEX_REGION_CLAUDE_4_0_SONNET`	string
`vertex_region_claude_4_1_opus`	`VERTEX_REGION_CLAUDE_4_1_OPUS`	string
`vertex_region_claude_4_5_opus`	`VERTEX_REGION_CLAUDE_4_5_OPUS`	string
`vertex_region_claude_4_5_sonnet`	`VERTEX_REGION_CLAUDE_4_5_SONNET`	string
`vertex_region_claude_4_6_opus`	`VERTEX_REGION_CLAUDE_4_6_OPUS`	string
`vertex_region_claude_4_6_sonnet`	`VERTEX_REGION_CLAUDE_4_6_SONNET`	string
`vertex_region_claude_4_7_opus`	`VERTEX_REGION_CLAUDE_4_7_OPUS`	string
`vertex_region_claude_haiku_4_5`	`VERTEX_REGION_CLAUDE_HAIKU_4_5`	string

Auto-set at Runtime

These are set automatically by Claude Code. Including them in your config is harmless but pointless.

YAML field	Env var	Type
`claudecode`	`CLAUDECODE`	string
`claude_code_remote`	`CLAUDE_CODE_REMOTE`	string
`claude_code_remote_session_id`	`CLAUDE_CODE_REMOTE_SESSION_ID`	string
`claude_code_session_id`	`CLAUDE_CODE_SESSION_ID`	string
`claude_code_team_name`	`CLAUDE_CODE_TEAM_NAME`	string
`claude_code_provider_managed_by_host`	`CLAUDE_CODE_PROVIDER_MANAGED_BY_HOST`	string

Deprecated

YAML field	Env var	Type	Note
`anthropic_small_fast_model`	`ANTHROPIC_SMALL_FAST_MODEL`	string	Use `anthropic_default_haiku_model`
`enable_prompt_caching_1h_bedrock`	`ENABLE_PROMPT_CACHING_1H_BEDROCK`	bool	Use `enable_prompt_caching_1h`

Escape hatch: env

The env: map lets you set arbitrary environment variables that don’t have a named field:

profiles:
  my-profile:
    anthropic_base_url: https://example.com
    env:
      # Standard OTel variables, custom provider settings, etc.
      OTEL_SERVICE_NAME: "my-claude-code"
      MY_CUSTOM_VAR: "value"

Global env: at the top level applies to all profiles:

env:
  DISABLE_TELEMETRY: "1"

profiles:
  default: {}
  deepseek:
    anthropic_base_url: https://api.deepseek.com/anthropic

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ccode - Custom Claude Code launcher