Struct KimetsuSection 

pub struct KimetsuSection {
    pub project_id: String,
    pub schema_version: i64,
    pub use_user_brain: bool,
    pub mcp_write_tools: bool,
    pub tier: Option<Tier>,
}

Fields

project_id: String

schema_version: i64

use_user_brain: bool

W3.3: per-project opt-out of the global cross-project user brain (~/.kimetsu/brain.db). When false, GlobalUser writes fall back to the project DB and retrieval skips the user-brain merge — identical to KIMETSU_USER_BRAIN=0 but durable and scoped to this project.

Precedence: KIMETSU_USER_BRAIN env > this field > default (true). #[serde(default)] keeps all pre-W3 project.toml files loading unchanged (they get use_user_brain = true).

mcp_write_tools: bool

v1.0.0: allow the LOCAL stdio MCP server to expose privileged write tools (kimetsu_brain_record, memory_add/accept/reject, …). Default true: the local plugin install on your own machine is the “trusted session” the gate exists for, and the brain’s own workflow (CLAUDE.md guidance, the Stop-hook harvest cue) instructs the agent to record lessons — a default-deny gate contradicted that at every session end. Personalize via kimetsu config set kimetsu.mcp_write_tools false. Precedence: KIMETSU_MCP_ENABLE_WRITE_TOOLS env (set = wins, truthy/falsy) > this field > default (true). The REMOTE server ignores this field entirely (a cloned repo’s project.toml is untrusted there) and stays env-only, default-deny.

tier: Option<Tier>

v2.6: which product tier this brain runs as.

"free" (default) is the headline claim — zero LLM calls anywhere in the memory pipeline. Ingest, store, retrieve and rerank are FTS5 + local embeddings + a local cross-encoder, and every capability has a deterministic or statistical implementation.

"deep" opts into a local small model in the loop for the handful of features that are genuinely better with one (see Tier). Every Deep feature has a Free fallback that is the Free behaviour, so flipping the tier can add quality but can never remove a capability.

Absent (the default) means auto: a brain with a cheap model configured is already making model calls, so it reads as Deep; a brain without one reads as Free. That keeps every pre-v2.6 project.toml behaving exactly as it did while making the label honest. Set it explicitly to force the tier — "free" is a durable opt-out of model calls even when credentials are present.

Precedence: KIMETSU_TIER env > this field > auto. Resolve it with ProjectConfig::tier, never by reading this field — the resolver also downgrades deep to free when no model is actually reachable, which would otherwise be a label over a no-op.

Trait Implementations

impl Clone for KimetsuSection

fn clone(&self) -> KimetsuSection

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for KimetsuSection

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for KimetsuSection

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for KimetsuSection

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.