ContextStrategy

SUPPORT · interface · Type contract

Validated inputs ready to pass to a context processing node.

Import

TypeScript

import type { ContextStrategy } from '@jangts/agent-core/support';

JavaScript

/** @typedef {import('@jangts/agent-core/support').ContextStrategy} ContextStrategy */

Other public entry points:@jangts/agent-core/support, @jangts/agent-core/support/context.

Definition

interface ContextStrategy

Field structure

Field	Type	Required	Description
policy	ContextPolicy	Required	Read-only. Reduction policy with the generated or explicit steps and selection.
compressors	readonly ContextCompressor[]	Required	Read-only. Compressors referenced by generated compression steps, deduplicated by identity.
selectors	readonly ContextSelector[]	Required	Read-only. Selectors available to model-driven selection.

Examples

• Generate processing strategies from history semantics: Reuse fragment identity and hard budgets to generate complete steps and references for recent or continuity.

Reuse an existing fragment to generate a recent-history strategy

Beginner · Node.js

TypeScript

import { Support } from '@jangts/agent-core';
const fragment = { id: 'history', maxChars: 4000 };
const strategy = Support.createContextStrategy({ kind: 'recent', fragment, field: 'messages' });
console.log(strategy.policy, strategy.compressors);

JavaScript

import { Support } from '@jangts/agent-core';
const fragment = { id: 'history', maxChars: 4000 };
const strategy = Support.createContextStrategy({ kind: 'recent', fragment, field: 'messages' });
console.log(strategy.policy, strategy.compressors);

Add kept groups and target size to the same configuration

Configuration · Node.js

TypeScript

import { Support } from '@jangts/agent-core';
const fragment = { id: 'history', maxChars: 4000 };
const strategy = Support.createContextStrategy({ kind: 'recent', fragment, field: 'messages',
  keepGroups: 3, targetChars: 2500, grouping: { kind: 'user-turn' },
});
console.log(strategy.policy);

JavaScript

import { Support } from '@jangts/agent-core';
const fragment = { id: 'history', maxChars: 4000 };
const strategy = Support.createContextStrategy({ kind: 'recent', fragment, field: 'messages',
    keepGroups: 3, targetChars: 2500, grouping: { kind: 'user-turn' },
});
console.log(strategy.policy);

Related policy source

• Scenario catalog, generated steps, and precise overrides

Related definitions

• ContextCompressor
• ContextPolicy
• ContextSelector