---
title: "List memory layers"
method: GET
path: "/v1/workspaces/{workspaceId}/memory_layers"
tags: ["MemoryService", "Memory Layers"]
---

# List memory layers

`GET /v1/workspaces/{workspaceId}/memory_layers`

Lists all memory layers in the workspace

## Path parameters

- `workspaceId` string, required

## Query parameters

- `limit` integer
- `cursor` string
- `prefix` string
- `query` string
- `type` 'MEMORY_LAYER_TYPE_UNSPECIFIED' | 'MEMORY_LAYER_TYPE_EPISODIC' | 'MEMORY_LAYER_TYPE_SKILLS', enum
- `agentId` string
- `episodicKeyPrefix` string
- `labels` string
- `sortOrder` string
- `includeInfo` boolean

## Response `200`

OK

- ListMemoryLayersResponse
  - `items` MemoryLayer[]
    - `metadata` ResourceMetadata, required — Standard metadata for persistent, named resources (e.g., agents, tools, prompts)
      - `id` string, required — Unique identifier for the resource (prefixed ULID, e.g., "agent_01HXK...")
      - `accountId` string, required — Account this resource belongs to for multi-tenant isolation (prefixed ULID)
      - `workspaceId` string, required — Workspace this resource belongs to for organizational grouping (prefixed ULID)
      - `name` string, required — Human-readable name for the resource (e.g., "Customer Support Agent", "Email Tool") Required for resources that users interact with directly
      - `externalId` string — External ID for the resource (e.g., a workflow ID from an external system)
      - `labels` object — Key-value pairs for categorization and filtering. Values are 0-63 alphanumeric characters with "-", "_", or "." allowed between; keys follow the same shape and additionally accept an optional DNS-subdomain prefix (e.g. "cadenya.com/") of at most 253 characters. Examples: {"environment": "production", "team": "platform", "version": "v2"}
      - `profileId` string, required — ID of the actor (user or service account) that created this resource
      - `createdAt` string, date-time, required — Timestamp when this resource was created
      - `updatedAt` string, date-time — Timestamp when this resource was last updated
    - `spec` MemoryLayerSpec, required
      - `type` 'MEMORY_LAYER_TYPE_UNSPECIFIED' | 'MEMORY_LAYER_TYPE_EPISODIC' | 'MEMORY_LAYER_TYPE_SKILLS', enum, required
      - `description` string — Human-readable description of the layer's purpose. Encouraged for user-created layers; system-managed layers may have a generated description.
      - `systemManaged` boolean — Server-set. True for layers managed by the system (e.g., episodic layers created automatically when an objective uses an episodic_key). System-managed layers cannot be assigned to objective cascades via the API and cannot be mutated by clients — their lifecycle is controlled entirely by the runtime.
      - `expiresAt` string, date-time — For layers with a finite lifetime (e.g., episodic), the time at which the layer becomes eligible for cleanup. Set by the system; unset for persistent layers.
      - `agentId` string — Server-set on episodic layers: the agent this layer belongs to. Unset for non-episodic layers.
      - `episodicKey` string — Server-set on episodic layers: the caller-supplied episodic key the layer was created for. Unset for non-episodic layers.
    - `info` MemoryLayerInfo
      - `entryCount` integer — Number of entries currently in this layer.
      - `createdBy` Profile — A profile identifies a user or non-human principal (such as an API key) at the account level. Profiles are account-scoped and can be granted access to multiple workspaces.
        - `metadata` AccountResourceMetadata, required — AccountResourceMetadata is used to represent a resource that is associated to an account but not to a workspace.
          - `id` string, required — Unique identifier for the resource (prefixed ULID, e.g., "apikey_01HXK...")
          - `accountId` string, required — Account this resource belongs to for multi-tenant isolation (prefixed ULID)
          - `name` string, required — Human-readable name for the resource (e.g., "Customer Support Agent", "Email Tool") Required for resources that users interact with directly
          - `externalId` string — External ID for the resource (e.g., a workflow ID from an external system)
          - `labels` object — Key-value pairs for categorization and filtering. Values are 0-63 alphanumeric characters with "-", "_", or "." allowed between; keys follow the same shape and additionally accept an optional DNS-subdomain prefix (e.g. "cadenya.com/") of at most 253 characters. Examples: {"environment": "production", "team": "platform", "version": "v2"}
          - `profileId` string, required
          - `createdAt` string, date-time
        - `spec` ProfileSpec, required — Configuration for a profile.
          - `email` string — Email address of the profile. Required and unique within an account for user profiles.
          - `name` string — Display name (e.g., "Bobby Tables").
          - `type` 'PROFILE_TYPE_UNSPECIFIED' | 'PROFILE_TYPE_USER' | 'PROFILE_TYPE_API_KEY' | 'PROFILE_TYPE_SYSTEM', enum, required — Whether this profile represents a human user, an API key, or a system principal.
      - `lastUsedAt` string, date-time — Timestamp of the most recent objective that resolved against this layer. Useful for surfacing unused layers in the dashboard.
      - `agent` ResourceMetadata — Standard metadata for persistent, named resources (e.g., agents, tools, prompts)
        - `id` string, required — Unique identifier for the resource (prefixed ULID, e.g., "agent_01HXK...")
        - `accountId` string, required — Account this resource belongs to for multi-tenant isolation (prefixed ULID)
        - `workspaceId` string, required — Workspace this resource belongs to for organizational grouping (prefixed ULID)
        - `name` string, required — Human-readable name for the resource (e.g., "Customer Support Agent", "Email Tool") Required for resources that users interact with directly
        - `externalId` string — External ID for the resource (e.g., a workflow ID from an external system)
        - `labels` object — Key-value pairs for categorization and filtering. Values are 0-63 alphanumeric characters with "-", "_", or "." allowed between; keys follow the same shape and additionally accept an optional DNS-subdomain prefix (e.g. "cadenya.com/") of at most 253 characters. Examples: {"environment": "production", "team": "platform", "version": "v2"}
        - `profileId` string, required — ID of the actor (user or service account) that created this resource
        - `createdAt` string, date-time, required — Timestamp when this resource was created
        - `updatedAt` string, date-time — Timestamp when this resource was last updated
  - `pagination` Page — Page carries cursor-based pagination state. There is no total: the cursor walks the result set without ever counting it, and a count would cost a second query on every list.
    - `nextCursor` string

## Other responses

- `default` — Default error response

## Changes

- **2026-07-08** `a99a473ee3ad` — 1 warning
  - removed the optional property `pagination/total` from the response with the `200` status
- **2026-07-08** `e72f368ddab7` — 1 info
  - added the new optional `query` request parameter `labels`
- **2026-07-02** `06e0e37c1499` — 3 warning, 1 info
  - deleted the `query` request parameter `bundleKey`
  - removed the optional property `items/items/info/agent/allOf[#/components/schemas/ResourceMetadata]/bundleKey` from the response with the `200` status
  - removed the optional property `items/items/metadata/bundleKey` from the response with the `200` status
  - added the optional property `items/items/info/createdBy/metadata/createdAt` to the response with the `200` status
- **2026-06-11** `6ef1884395e2` — 1 info
  - added the optional property `items/items/info/agent` to the response with the `200` status
- **2026-06-11** `08fde3ae3e37` — 4 info
  - added the new optional `query` request parameter `agentId`
  - added the new optional `query` request parameter `episodicKeyPrefix`
  - added the optional property `items/items/spec/agentId` to the response with the `200` status
  - added the optional property `items/items/spec/episodicKey` to the response with the `200` status

[Full history](https://skmtc.dev/cadenya/apis/cadenya-api/changes/v1/workspaces/:workspaceId/memory_layers/get.md)

---

[API](https://skmtc.dev/cadenya/apis/cadenya-api.md) · [All operations](https://skmtc.dev/cadenya/apis/cadenya-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/cadenya/cadenya-api/revisions/ac1a7f084068/schema)