Struct CognitiveStream 

pub struct CognitiveStream {
    pub lens: String,
    pub prompt_modifier: String,
    pub model_override: Option<String>,
    pub metadata: HashMap<String, Value>,
}

A single cognitive processing stream — one lens on the agent’s identity.

All streams share the same agent identity, memory, and boundaries. Each stream modifies the system prompt to focus on a specific cognitive function, and can optionally use a different (typically smaller) model.

Fields

lens: String

What cognitive function this stream handles. Examples: “emotional”, “logical”, “antithink”, “past-errors”, “creative”

prompt_modifier: String

How the agent’s system prompt is modified for this stream. Appended to the agent’s base system prompt.

model_override: Option<String>

Optional model override — use a smaller/cheaper model for this stream. When None, uses the agent’s primary model. Fast streams (haiku, local models) cost ~1% of the main model.

metadata: HashMap<String, Value>

Stream-specific metadata.

Implementations

impl CognitiveStream

pub fn new(lens: impl Into<String>, prompt_modifier: impl Into<String>) -> Self

Create a new cognitive stream with a lens name and prompt modifier.

pub fn with_model(self, model: impl Into<String>) -> Self

Use a different model for this stream (e.g., a fast/cheap model).

Trait Implementations

impl Clone for CognitiveStream

fn clone(&self) -> CognitiveStream

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CognitiveStream

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for CognitiveStream

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for CognitiveStream

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

where __S: Serializer,

Serialize this value into the given Serde serializer.