Enum ToolProfile 

pub enum ToolProfile {
    Minimal,
    Standard,
    Power,
    Custom(Vec<String>),
}

Controls which MCP tools are exposed to agents.

Three built-in tiers reduce tool-list overwhelm for new users while letting power users keep everything.

When NO profile is pinned (no config key, no env var), the server advertises only the lazy core set (CORE_TOOL_NAMES) and the effective profile falls back to Power — which acts as a pure call-gate (“everything reachable via ctx_call”), not as an advertisement list. Pinning a profile makes the advertised set explicit and authoritative (#358), which costs schema tokens: standard advertises its 16 full schemas, power the whole registry (#575).

Variants

Minimal

Standard

Power

Custom(Vec<String>)

Implementations

impl ToolProfile

pub fn parse(s: &str) -> Option<Self>

pub fn as_str(&self) -> &str

pub fn description(&self) -> &str

pub fn without_tool(&self, tool_name: &str) -> Self

Returns a profile that behaves identically except tool_name reports as disabled. Used to align rules-injection with the effective tool visibility for native-editor clients that hide specific tools (#1008).

pub fn is_tool_enabled(&self, tool_name: &str) -> bool

pub fn tool_count(&self) -> usize

pub fn tool_names(&self) -> Vec<&str>

pub fn from_config(cfg: &Config) -> Self

Resolves the active tool profile from environment, then config.

Priority: LEAN_CTX_TOOL_PROFILE env > config tool_profile > config tools.enabled > default. Existing installs default to power (backward compat). New installs set standard during setup.

Trait Implementations

impl Clone for ToolProfile

fn clone(&self) -> ToolProfile

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ToolProfile

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for ToolProfile

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for ToolProfile

impl PartialEq for ToolProfile

fn eq(&self, other: &ToolProfile) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for ToolProfile