> ## Documentation Index
> Fetch the complete documentation index at: https://cadenya.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Delete a tool set

> Permanently remove a tool set. It refuses while any variation still assigns it.

Deletes a [tool set](/docs/api-reference/toolservice/create-a-new-tool-set) and its tools for good. Use it for a set nothing depends on. For one still wired into an agent, [archive](/docs/api-reference/toolservice/archive-a-tool-set) instead.

<CodeGroup>
  ```typescript TypeScript theme={null}
  await client.toolSets.delete(toolSetId, { workspaceId });
  ```

  ```go Go theme={null}
  err := client.ToolSets.Delete(ctx, toolSetID,
  	cadenya.ToolSetDeleteParams{WorkspaceID: cadenya.String(workspaceID)})
  ```

  ```ruby Ruby theme={null}
  cadenya.tool_sets.delete(tool_set_id, workspace_id: workspace_id)
  ```

  ```bash cURL theme={null}
  curl -X DELETE "https://api.cadenya.com/v1/workspaces/${WORKSPACE_ID}/tool_sets/${TOOL_SET_ID}" \
    -H "Authorization: Bearer ${CADENYA_API_KEY}"
  ```
</CodeGroup>

A deleted tool set is gone: a later `GET` is a `404`. This is not the soft, reversible archive.

## It refuses while assigned

A tool set assigned to any [variation](/docs/api-reference/agentvariationservice/add-an-assignment-to-a-variation) does not delete. The guard is a typed `400`:

```
DELETE .../tool_sets/{assigned}
  → 400  "tool set cannot be deleted while it is assigned to agent variations"
```

To delete a set that is assigned, first remove the assignment or [archive](/docs/api-reference/toolservice/archive-a-tool-set) the set. The guard checks the actual assignments; a `400` means at least one variation still points at the set.

<Note>
  `info.agentCount` looks like the field to check here, but it currently always reads `0` even for an assigned set. Do not use it to predict a delete. To know whether a set is assigned, read its variations' `info.assignments`, or attempt the delete and handle the `400`.
</Note>

## Deleting the agent clears the assignment

Deleting an agent cascades to its variations and their assignments, so a tool set is not stranded when the agent that used it goes away. Verified end to end:

```
assign tool set to a variation   → 200
DELETE the agent                 → 200   (variation and assignment go with it)
DELETE the tool set              → 200   (no longer assigned)
```

Earlier this was a trap: deleting the agent left a dangling assignment that could not be removed, so the tool set became permanently undeletable. That is fixed. If you have an old tool set stuck this way, it was archived as the workaround; it can be deleted now.

## Archive versus delete

|                | Archive                      | Delete  |
| -------------- | ---------------------------- | ------- |
| Reversible     | Yes, `unarchive`             | No      |
| While assigned | Allowed                      | Refused |
| History        | Kept                         | Gone    |
| Tools          | Pulled from agents, retained | Removed |

Reach for archive by default. It stops the sync, hides the set, and pulls its tools from objectives, while leaving assignments and history intact. Delete only when you are sure nothing needs the set or its history again.

## Related

<CardGroup cols={2}>
  <Card title="Archive a tool set" icon="box-archive" href="/docs/api-reference/toolservice/archive-a-tool-set">
    The reversible retirement, allowed even while assigned.
  </Card>

  <Card title="Remove an assignment" icon="link-slash" href="/docs/api-reference/agentvariationservice/remove-an-assignment-from-a-variation">
    Clear the assignment that blocks a delete.
  </Card>

  <Card title="Get a tool set" icon="magnifying-glass" href="/docs/api-reference/toolservice/get-a-tool-set-by-id">
    The adapter, state, and tool counts on one set.
  </Card>

  <Card title="List tool sets" icon="layer-group" href="/docs/api-reference/toolservice/list-tool-sets">
    Archived sets appear under `?state=STATE_ARCHIVED`.
  </Card>
</CardGroup>


## OpenAPI

````yaml delete /v1/workspaces/{workspaceId}/tool_sets/{id}
openapi: 3.1.0
info:
  title: Cadenya API
  description: API for the Cadenya Agent Runtime platform.
  version: '1.0'
servers:
  - url: https://api.cadenya.com
    description: Production server
security:
  - bearerAuth: []
tags:
  - name: AIProviderKeyService
  - name: APIKeyService
    description: |-
      Issue, rotate, disable, and revoke a workspace's API keys. Every key
       belongs to exactly one workspace; the system-managed global account key is
       managed via GlobalAPIKeyService instead.
  - name: AccountService
    description: >-
      Manage the authenticated account. Accounts are the top-level
      organizational
       unit and contain one or more workspaces.
  - name: AgentScheduleService
    description: >-
      Manage recurring schedules attached to agents. Schedules trigger
      objectives
       on a cadence defined by AgentScheduleSpec.Schedule.
  - name: AgentService
    description: >-
      Manage AI agents within a workspace. Agents define AI behavior and tool
      access.
  - name: AgentVariationService
    description: >-
      Manage variations of an agent and their tool, sub-agent, and memory layer
      assignments.
  - name: GlobalAPIKeyService
    description: |-
      Manage the account's system-provisioned global API key. The global key is
       the only key that spans every workspace; it is created by the system and
       cannot be deleted, so the surface is retrieve, rotate, and the
       disable/enable kill switch.
  - name: MemoryService
    description: >-
      Manage memory layers and their entries. Layers are named containers that
      can
       be composed into an objective's memory cascade; entries are the keyed values
       within a layer. System-managed layers (e.g., episodic layers created by the
       runtime) cannot be mutated through this API.
  - name: ModelService
    description: |-
      Manage LLM models available to a workspace. Models represent provider and
       family pairs (e.g., "anthropic/claude-sonnet-4.6"). Workspaces are seeded
       with the supported models and you can enable or disable each one.
  - name: ObjectiveEventStreamsService
  - name: ObjectiveService
  - name: ProfilesService
    description: |-
      Operations on profiles, the account-level principals (users, API keys,
       system) that authenticate against the API.
  - name: SearchService
  - name: TenantService
    description: >-
      Read and erase tenants and the subjects under them. Tenants and subjects
      are
       created by assertion — on objective creation or widget session mint — never
       directly, so this service has no create or update: it exists to enumerate what
       assertions have produced, and to destroy it on request.
  - name: ToolService
    description: >-
      Manage tool sets and the tools they contain. Tool sets group related
      tools,
       and tools define specific capabilities available to agents.

       When a tool set is managed, only API key actors can modify its tools; human
       (profile) actors cannot.
  - name: UploadService
    description: |-
      Issue short-lived presigned URLs for direct client-to-object-storage
       uploads. Created uploads can be referenced by id when creating or updating
       resources that accept binary content (e.g., MemoryEntry).
  - name: WidgetService
    description: |-
      Manage embeddable chat widgets. A widget binds an agent to a globally
       unique hostname with a per-widget origin allowlist; browsers reach it with
       session tokens minted via WidgetSessionService.
  - name: WidgetSessionService
    description: >-
      Mint and manage widget sessions. Session creation is server-to-server
      only:
       the customer's backend authenticates its visitor, asserts tenant/subject
       context, attaches any per-visitor secrets, and receives a short-lived
       bearer token the browser uses against the widget host.
  - name: WorkspaceAdminService
    description: >-
      Administer workspaces across the account: create and archive workspaces
      and
       manage their membership. These operations are account-scoped and require the
       admin role (a token whose profile holds the WorkOS admin role); they live
       under /v1/account/workspaces rather than the workspace-scoped /v1/workspaces
       tree so an admin can manage any workspace in the account, including ones they
       are not themselves a member of.
  - name: WorkspaceSecretService
  - name: WorkspaceService
    description: |-
      Manage workspaces within an account. Workspaces provide organizational
       grouping and isolation for resources such as agents, tools, and API keys.

       This is the workspace-scoped, end-user surface. Administrative operations
       (create / archive workspaces, manage members) live in WorkspaceAdminService
       under /v1/account/workspaces and require the admin role.
paths:
  /v1/workspaces/{workspaceId}/tool_sets/{id}:
    delete:
      tags:
        - ToolService
        - Tool Sets
      summary: Delete a tool set
      description: Deletes a tool set in the workspace
      operationId: ToolService_DeleteToolSet
      parameters:
        - name: workspaceId
          in: path
          description: Workspace ID.
          required: true
          schema:
            type: string
            example: workspace_01HXKD2E5NQM3T9AYWCF133E3Q
        - name: id
          in: path
          description: |-
            Tool set ID. Accepts the canonical ts_… form or the
             external_id:<value> form.
          required: true
          schema:
            example: toolset_01HXKD2E5NQM3T9AYWCFNRMN74
            type: string
      responses:
        '200':
          description: OK
          content: {}
        default:
          description: Default error response
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Status'
      x-codeSamples:
        - lang: JavaScript
          source: |-
            import Cadenya from '@cadenya/cadenya';

            const client = new Cadenya({
              apiKey: process.env['CADENYA_API_KEY'], // This is the default and can be omitted
            });

            await client.toolSets.delete('toolset_01HXKD2E5NQM3T9AYWCFNRMN74', {
              workspaceId: 'workspace_01HXKD2E5NQM3T9AYWCF133E3Q',
            });
        - lang: Python
          source: |-
            import os
            from cadenya import Cadenya

            client = Cadenya(
                api_key=os.environ.get("CADENYA_API_KEY"),  # This is the default and can be omitted
            )
            client.tool_sets.delete(
                id="toolset_01HXKD2E5NQM3T9AYWCFNRMN74",
                workspace_id="workspace_01HXKD2E5NQM3T9AYWCF133E3Q",
            )
        - lang: Go
          source: "package main\n\nimport (\n\t\"context\"\n\t\"go.cadenya.com/cadenya-go\"\n\t\"go.cadenya.com/cadenya-go/option\"\n)\n\nfunc main() {\n\tclient := cadenya.NewClient(\n\t\toption.WithAPIKey(\"My API Key\"),\n\t)\n\terr := client.ToolSets.Delete(\n\t\tcontext.TODO(),\n\t\t\"toolset_01HXKD2E5NQM3T9AYWCFNRMN74\",\n\t\tcadenya.ToolSetDeleteParams{\n\t\t\tWorkspaceID: cadenya.String(\"workspace_01HXKD2E5NQM3T9AYWCF133E3Q\"),\n\t\t},\n\t)\n\tif err != nil {\n\t\tpanic(err.Error())\n\t}\n}\n"
        - lang: Ruby
          source: |-
            require "cadenya"

            cadenya = Cadenya::Client.new(api_key: "My API Key")

            result = cadenya.tool_sets.delete(
              "toolset_01HXKD2E5NQM3T9AYWCFNRMN74",
              workspace_id: "workspace_01HXKD2E5NQM3T9AYWCF133E3Q"
            )

            puts(result)
        - lang: CLI
          source: |-
            cadenya tool-sets delete \
              --api-key 'My API Key' \
              --workspace-id workspace_01HXKD2E5NQM3T9AYWCF133E3Q \
              --id toolset_01HXKD2E5NQM3T9AYWCFNRMN74
components:
  schemas:
    Status:
      type: object
      properties:
        code:
          type: integer
          description: >-
            The status code, which should be an enum value of
            [google.rpc.Code][google.rpc.Code].
          format: int32
        message:
          type: string
          description: >-
            A developer-facing error message, which should be in English. Any
            user-facing error message should be localized and sent in the
            [google.rpc.Status.details][google.rpc.Status.details] field, or
            localized by the client.
        details:
          type: array
          items:
            $ref: '#/components/schemas/GoogleProtobufAny'
          description: >-
            A list of messages that carry the error details.  There is a common
            set of message types for APIs to use.
      description: >-
        The `Status` type defines a logical error model that is suitable for
        different programming environments, including REST APIs and RPC APIs. It
        is used by [gRPC](https://github.com/grpc). Each `Status` message
        contains three pieces of data: error code, error message, and error
        details. You can find out more about this error model and how to work
        with it in the [API Design
        Guide](https://cloud.google.com/apis/design/errors).
    GoogleProtobufAny:
      type: object
      properties:
        '@type':
          type: string
          description: The type of the serialized message.
      additionalProperties: true
      description: >-
        Contains an arbitrary serialized message along with a @type that
        describes the type of the serialized message.
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      bearerFormat: JWT

````