---
title: Add Federation Rule Workspace
url: https://platform.claude.com/docs/en/api/ruby/beta/organization/federation/rules/workspaces/add
---

# Add Federation Rule Workspace

`beta.organization.federation.rules.workspaces.add(federation_rule_id, **kwargs) -> BetaFederationRuleWorkspace`

**POST** `/v1/organizations/federation_rules/{federation_rule_id}/workspaces`

**Requires an OAuth access token with the `org:admin` scope**, from `ant auth login --scope org:admin` or a workload identity federation rule; Admin API keys are not accepted. See [Manage WIF with the Admin API](https://platform.claude.com/docs/en/manage-claude/wif-admin-api?sdk_languages=ruby).

Enable a federation rule for a workspace.

Idempotent; re-enabling returns the existing enablement. The rule and
workspace must both belong to your organization. Membership of the
rule's target service account in this workspace is not checked at
enablement: token exchange into this workspace is rejected unless the
target is a member (it is implicitly a member of the default workspace).
Archived rules are rejected with 400. OAuth callers may only manage rules
whose `oauth_scope` is `workspace:developer` or `workspace:inference`;
other scopes require a Console session.

## Parameters

- `federation_rule_id: String` (path parameter)

  ID of the federation rule.

- `workspace_id: String`

  Tagged ID of the workspace to enable this rule for.

- `betas: Array[AnthropicBeta]` (header parameter)

  Optional header to specify the beta version(s) you want to use.

  - `String = String`

  - `:"message-batches-2024-09-24"`

  - `:"prompt-caching-2024-07-31"`

  - `:"computer-use-2024-10-22"`

  - `:"computer-use-2025-01-24"`

  - `:"pdfs-2024-09-25"`

  - `:"token-counting-2024-11-01"`

  - `:"token-efficient-tools-2025-02-19"`

  - `:"output-128k-2025-02-19"`

  - `:"files-api-2025-04-14"`

  - `:"mcp-client-2025-04-04"`

  - `:"mcp-client-2025-11-20"`

  - `:"dev-full-thinking-2025-05-14"`

  - `:"interleaved-thinking-2025-05-14"`

  - `:"code-execution-2025-05-22"`

  - `:"extended-cache-ttl-2025-04-11"`

  - `:"context-1m-2025-08-07"`

  - `:"context-management-2025-06-27"`

  - `:"model-context-window-exceeded-2025-08-26"`

  - `:"skills-2025-10-02"`

  - `:"fast-mode-2026-02-01"`

  - `:"output-300k-2026-03-24"`

  - `:"user-profiles-2026-03-24"`

  - `:"user-profiles-2026-08-18"`

  - `:"user-profiles-2026-09-04"`

  - `:"advisor-tool-2026-03-01"`

  - `:"managed-agents-2026-04-01"`

  - `:"cache-diagnosis-2026-04-07"`

  - `:"dreaming-2026-04-21"`

  - `:"thinking-token-count-2026-05-13"`

  - `:"server-side-fallback-2026-06-01"`

  - `:"server-side-fallback-2026-07-01"`

  - `:"fallback-credit-2026-06-01"`

  - `:"fallback-credit-2026-07-01"`

  - `:"agent-memory-2026-07-22"`

  - `:"mid-conversation-tool-changes-2026-07-01"`

  - `:"compact-2026-01-12"`

  - `:"computer-use-2025-11-24"`

  - `:"mcp-tunnels-2026-06-22"`

  - `:"structured-outputs-2025-11-13"`

  - `:"task-budgets-2026-03-13"`

  - `:"thinking-display-updates-2026-08-18"`

  - `:"ce-user-management-2026-07-13"`

  - `:"mid-conversation-output-config-2026-07-01"`

  - `:"thinking-binding-controls-2026-08-01"`

  - `:"mid-conversation-system-clear-at-2026-08-21"`

  - `:"compact-2026-09-04"`

  - `:"inline-tools-2026-09-15"`

  - `:"mcp-client-2026-09-15"`

  - `:"ce-plugins-2026-09-01"`

  - `:"spend-limit-reads-2026-09-26"`

  - `:"telemetry-destinations-2026-08-11"`

## Returns

- `class BetaFederationRuleWorkspace`

  - `type: :federation_rule_workspace`

  - `created_at: Time`

    When this workspace was enabled for the rule.

    format: date-time

  - `created_by_actor_id: String`

    Tagged ID (`user_...` or `svac_...`) of the actor that enabled this workspace for the rule, if known.

  - `federation_rule_id: String`

    Tagged ID of the federation rule.

  - `workspace_id: String`

    Tagged ID of the workspace this rule is enabled for.

  - `workspace_name: String`

    Workspace display name. Populated when listing; null in the enable response.

## Example

```ruby
require "anthropic"

anthropic = Anthropic::Client.new(api_key: "my-anthropic-api-key")

beta_federation_rule_workspace = anthropic.beta.organization.federation.rules.workspaces.add(
  "federation_rule_id",
  workspace_id: "workspace_id"
)

puts(beta_federation_rule_workspace)
```

### Response (200)

```json
{
  "created_at": "2024-10-30T23:58:27.427722Z",
  "created_by_actor_id": "created_by_actor_id",
  "federation_rule_id": "federation_rule_id",
  "type": "federation_rule_workspace",
  "workspace_id": "workspace_id",
  "workspace_name": "workspace_name"
}
```