Struct ClaudeSettings 

pub struct ClaudeSettings {
    pub env: BTreeMap<String, String>,
    pub other: BTreeMap<String, Value>,
}

Claude settings manager for API configuration

Manages the Claude settings.json file to control Claude’s API configuration Handles environment variables and preserves other settings

Fields

env: BTreeMap<String, String>

Environment variables map (ANTHROPIC_AUTH_TOKEN, ANTHROPIC_BASE_URL, ANTHROPIC_MODEL, ANTHROPIC_SMALL_FAST_MODEL)

other: BTreeMap<String, Value>

Other settings to preserve when modifying API configuration

Implementations

impl ClaudeSettings

pub fn load(custom_dir: Option<&str>) -> Result<Self>

Load Claude settings from disk

Reads the JSON file from the configured Claude settings directory Returns default empty settings if file doesn’t exist Creates the file with default structure if it doesn’t exist

Arguments

• custom_dir - Optional custom directory for Claude settings

Errors

Returns error if file exists but cannot be read or parsed

pub fn save(&self, custom_dir: Option<&str>) -> Result<()>

Save Claude settings to disk

Writes the current state to the configured Claude settings directory Creates the directory structure if it doesn’t exist Ensures the env field is properly serialized

Arguments

• custom_dir - Optional custom directory for Claude settings

Errors

Returns error if directory cannot be created or file cannot be written

pub fn switch_to_config(&mut self, config: &Configuration)

Switch to a specific API configuration

Updates the environment variables with the provided configuration Ensures env field exists before updating

Arguments

• config - Configuration containing token, URL, and optional model settings to apply

pub fn remove_anthropic_env(&mut self)

Remove Anthropic environment variables

Clears all Anthropic-related environment variables from settings Used to reset to default Claude behavior

pub fn switch_to_config_with_mode( &mut self, config: &Configuration, mode: StorageMode, custom_dir: Option<&str>, ) -> Result<()>

Switch to a specific API configuration with specified storage mode

Updates the settings.json file based on the storage mode:

• Env mode: Launch Claude with environment variables (cleans settings.json)
• Config mode: Write to env field in settings.json (settings file persistence)

Arguments

• config - Configuration containing token, URL, and optional model settings to apply
• mode - Storage mode to use (Env or Config)
• custom_dir - Optional custom directory for Claude settings

Errors

Returns error if settings cannot be saved

Trait Implementations

impl Clone for ClaudeSettings

fn clone(&self) -> ClaudeSettings

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Default for ClaudeSettings

fn default() -> ClaudeSettings

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for ClaudeSettings

fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for ClaudeSettings

fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>

where S: Serializer,

Serialize this value into the given Serde serializer.