Skip to main content

Class: CognitiveWorkingMemory

Defined in: packages/agentos/src/memory/core/working/CognitiveWorkingMemory.ts:74

Cognitive working memory with Baddeley-inspired slot management.

Also implements IWorkingMemory for backward compatibility — get/set/delete/clear/has/size/getAll delegate to the backing store, while slot management is layered on top.

Implements​

  • IWorkingMemory

Constructors​

Constructor​

new CognitiveWorkingMemory(backing, config?): CognitiveWorkingMemory

Defined in: packages/agentos/src/memory/core/working/CognitiveWorkingMemory.ts:83

Parameters​

backing​

IWorkingMemory

config?​

Partial<CognitiveWorkingMemoryConfig>

Returns​

CognitiveWorkingMemory

Properties​

id​

readonly id: string

Defined in: packages/agentos/src/memory/core/working/CognitiveWorkingMemory.ts:75

A unique identifier for this specific working memory instance. This ID may be correlated with a GMI instance or a user session.

Implementation of​

IWorkingMemory.id

Methods​

clear()​

clear(): Promise<void>

Defined in: packages/agentos/src/memory/core/working/CognitiveWorkingMemory.ts:114

Async

Clears all data from the working memory, effectively resetting it to an empty state. This is often used when a session ends or a persona is switched, and session-specific adaptations should not persist.

Returns​

Promise<void>

A promise that resolves when the memory has been cleared.

Throws​

If clearing fails (e.g., storage errors).

Example​

await workingMemory.clear(); // Session ended, wipe working memory.

Implementation of​

IWorkingMemory.clear

close()​

close(): Promise<void>

Defined in: packages/agentos/src/memory/core/working/CognitiveWorkingMemory.ts:127

Async

Closes any open resources associated with this working memory instance, such as database connections or file handles. This should be called when the GMI instance is being shut down to ensure graceful resource release.

Returns​

Promise<void>

A promise that resolves when resources are released.

Throws​

If closing fails.

Implementation of​

IWorkingMemory.close

decayActivations()​

decayActivations(): Promise<string[]>

Defined in: packages/agentos/src/memory/core/working/CognitiveWorkingMemory.ts:206

Apply per-turn activation decay to all slots. Slots that drop below minActivation become eviction candidates.

Returns​

Promise<string[]>

delete()​

delete(key): Promise<void>

Defined in: packages/agentos/src/memory/core/working/CognitiveWorkingMemory.ts:106

Async

Removes a key-value pair from the working memory. If the key does not exist, the operation should complete without error.

Parameters​

key​

string

The key of the value to delete.

Returns​

Promise<void>

A promise that resolves when the value has been deleted or if the key was not found.

Throws​

If deletion fails for other reasons (e.g., storage errors).

Example​

await workingMemory.delete('temporary_calculation_result');

Implementation of​

IWorkingMemory.delete

focus()​

focus(traceId, initialActivation?): Promise<string>

Defined in: packages/agentos/src/memory/core/working/CognitiveWorkingMemory.ts:161

Focus attention on a trace, adding it to working memory. If at capacity, the lowest-activation slot is evicted first.

Parameters​

traceId​

string

initialActivation?​

number = 0.8

Returns​

Promise<string>

The slot ID assigned to this trace.

formatForPrompt()​

formatForPrompt(): string

Defined in: packages/agentos/src/memory/core/working/CognitiveWorkingMemory.ts:235

Serialise current slots as a formatted string for prompt injection.

Returns​

string

get()​

get<T>(key): Promise<T | undefined>

Defined in: packages/agentos/src/memory/core/working/CognitiveWorkingMemory.ts:102

Async

Retrieves a value from the working memory based on its key.

Type Parameters​

T​

T = any

The expected type of the retrieved value.

Parameters​

key​

string

The key of the value to retrieve.

Returns​

Promise<T | undefined>

A promise that resolves with the retrieved value, or undefined if the key is not found in the memory.

Throws​

If retrieval fails for reasons other than the key not being found (e.g., deserialization issues).

Example​

const currentMood = await workingMemory.get<string>('current_mood');
if (currentMood) {
console.log(`Current mood is: ${currentMood}`);
}

Implementation of​

IWorkingMemory.get

getAll()​

getAll(): Promise<Record<string, any>>

Defined in: packages/agentos/src/memory/core/working/CognitiveWorkingMemory.ts:110

Async

Retrieves all key-value pairs currently stored in the working memory. This is useful for snapshotting, debugging, or transferring memory state.

Returns​

Promise<Record<string, any>>

A promise that resolves with an object containing all key-value pairs in the memory. Returns an empty object if the memory is empty.

Throws​

If there's an issue retrieving all data.

Example​

const allMemoryContents = await workingMemory.getAll();
console.log('Full working memory:', allMemoryContents);

Implementation of​

IWorkingMemory.getAll

getCapacity()​

getCapacity(): number

Defined in: packages/agentos/src/memory/core/working/CognitiveWorkingMemory.ts:141

Maximum slot capacity (personality-modulated).

Returns​

number

getSlot()​

getSlot(slotId): WorkingMemorySlot | undefined

Defined in: packages/agentos/src/memory/core/working/CognitiveWorkingMemory.ts:151

Get a specific slot by ID.

Parameters​

slotId​

string

Returns​

WorkingMemorySlot | undefined

getSlotCount()​

getSlotCount(): number

Defined in: packages/agentos/src/memory/core/working/CognitiveWorkingMemory.ts:136

Current number of occupied slots.

Returns​

number

getSlots()​

getSlots(): WorkingMemorySlot[]

Defined in: packages/agentos/src/memory/core/working/CognitiveWorkingMemory.ts:146

Get all active slots.

Returns​

WorkingMemorySlot[]

getUtilization()​

getUtilization(): number

Defined in: packages/agentos/src/memory/core/working/CognitiveWorkingMemory.ts:228

Get working memory utilisation (0-1).

Returns​

number

has()​

has(key): Promise<boolean>

Defined in: packages/agentos/src/memory/core/working/CognitiveWorkingMemory.ts:123

Async

Checks if a specific key exists in the working memory.

Parameters​

key​

string

The key to check for existence.

Returns​

Promise<boolean>

A promise that resolves to true if the key exists, false otherwise.

Throws​

If the check fails for reasons other than key presence.

Example​

if (await workingMemory.has('user_id')) {
// User ID is present in working memory
}

Implementation of​

IWorkingMemory.has

initialize()​

initialize(gmiInstanceId, config?): Promise<void>

Defined in: packages/agentos/src/memory/core/working/CognitiveWorkingMemory.ts:94

Async

Initializes the working memory instance. This method should be called before any other operations are performed. It can be used to set up connections, load initial data, or apply configuration.

Parameters​

gmiInstanceId​

string

The ID of the GMI instance this working memory is associated with. This allows the memory to be scoped or namespaced if needed.

config?​

Record<string, any>

Optional memory-specific configuration data. The structure of this config is implementation-dependent.

Returns​

Promise<void>

A promise that resolves when initialization is complete.

Throws​

If initialization fails (e.g., cannot connect to a backing store).

Implementation of​

IWorkingMemory.initialize

rehearse()​

rehearse(slotId): void

Defined in: packages/agentos/src/memory/core/working/CognitiveWorkingMemory.ts:195

Rehearse a slot (maintenance rehearsal), bumping its activation.

Parameters​

slotId​

string

Returns​

void

set()​

set<T>(key, value): Promise<void>

Defined in: packages/agentos/src/memory/core/working/CognitiveWorkingMemory.ts:98

Async

Stores a value in the working memory associated with a specific key. If the key already exists, its value will be overwritten. Values can be of any serializable type.

Type Parameters​

T​

T = any

Parameters​

key​

string

The key under which to store the value. Keys should be unique within this memory instance.

value​

T

The value to store. For complex objects, ensure they are serializable if persistence is involved.

Returns​

Promise<void>

A promise that resolves when the value has been successfully set.

Throws​

If the value cannot be set (e.g., serialization issues, storage errors).

Example​

await workingMemory.set('current_mood', 'empathetic');
await workingMemory.set('user_preferences', { theme: 'dark', notifications: false });

Implementation of​

IWorkingMemory.set

size()​

size(): Promise<number>

Defined in: packages/agentos/src/memory/core/working/CognitiveWorkingMemory.ts:119

Async

Returns the number of key-value pairs currently stored in the working memory.

Returns​

Promise<number>

A promise that resolves with the count of items in the memory.

Throws​

If the size cannot be determined.

Example​

const itemCount = await workingMemory.size();
console.log(`Working memory contains ${itemCount} items.`);

Implementation of​

IWorkingMemory.size