> ## Documentation Index > Fetch the complete documentation index at: https://praison.ai/docs/llms.txt > Use this file to discover all available pages before exploring further. # Context Manager • Rust AI Agent SDK > ContextManager: High-level context manager facade. # ContextManager > Defined in the [**context**](../modules/context) module. Rust AI Agent SDK High-level context manager facade. ## Fields | Name | Type | Description | | ---------- | ----------------- | -------------- | | `config` | `ContextConfig` | Configuration | | `budgeter` | `ContextBudgeter` | Budgeter | | `ledger` | `ContextLedger` | Current ledger | ## Methods ### `new` ```rust theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}} fn new(config: ContextConfig) -> Self ``` Create a new context manager **Parameters:** | Name | Type | | -------- | --------------- | | `config` | `ContextConfig` | ### `default_for_model` ```rust theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}} fn default_for_model(model: impl Into) -> Self ``` Create with default config **Parameters:** | Name | Type | | ------- | ------------------------- | | `model` | `impl Into<String>` | ### `allocate_budget` ```rust theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}} fn allocate_budget(&self) -> BudgetAllocation ``` Get budget allocation ### `add_segment` ```rust theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}} fn add_segment(&mut self, segment: ContextSegment) -> () ``` Add a segment to the ledger **Parameters:** | Name | Type | | --------- | ---------------- | | `segment` | `ContextSegment` | ### `remaining` ```rust theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}} fn remaining(&self) -> usize ``` Get remaining tokens ### `is_over_budget` ```rust theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}} fn is_over_budget(&self) -> bool ``` Check if over budget ### `utilization` ```rust theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}} fn utilization(&self) -> f64 ``` Get utilization ### `reset` ```rust theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}} fn reset(&mut self) -> () ``` Reset the ledger ### `track_system` ```rust theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}} fn track_system(&mut self, system_prompt: &str) -> () ``` Estimate and track system prompt **Parameters:** | Name | Type | | --------------- | ------ | | `system_prompt` | `&str` | ### `track_messages` ```rust theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}} fn track_messages(&mut self, messages: &[serde_json::Value]) -> () ``` Estimate and track messages **Parameters:** | Name | Type | | ---------- | ---------------------- | | `messages` | `&[serde_json::Value]` | ### `track_tools` ```rust theme={"theme":{"light":"vitesse-light","dark":"vitesse-dark"}} fn track_tools(&mut self, tools: &[serde_json::Value]) -> () ``` Estimate and track tools **Parameters:** | Name | Type | | ------- | ---------------------- | | `tools` | `&[serde_json::Value]` | ## Source `praisonai/src/context/mod.rs` at line 417 *** ## Related Documentation