Follow Discord
Sweep 22 Oct 2026 · 04:32Z Build v2.1.308 527 read Stable v2.1.308 Latest v2.1.308 Next v2.1.308 Feeds RSS JSON llms.txt llms-full.txt Unofficial
HomeDocsClaude Developer Platform 21 Oct 2026
One change · api

apple-foundation-models changedcli-sdks-libraries/libraries/apple-foundation-models

Nearest release: v2.1.307, published an hour after this site recorded the change. Shown because the two are within 24 hours of each other. Nothing here says the release caused the edit.

Recorded here
Lines+4added
Lines−4removed
From line 6 where the diff opens
First seen 14 Aug 2026 this site's first read of the page
Recorded edits9to this page, all time

The whole hunk

from line 6, old and new numbered
/
lines
from line 6
66 
77[Claude for Foundation Models](https://github.com/anthropics/ClaudeForFoundationModels) is a Swift package that makes Claude available as a server-side language model in Apple's [Foundation Models](https://developer.apple.com/documentation/foundationmodels) framework. The package conforms Claude to the framework's `LanguageModel` protocol, so you drive it with the same `LanguageModelSession` API you use for Apple's on-device model: `respond(to:)`, streaming, guided generation, and tool calling all work the same way.
88 
9Requests go directly from your app to the Claude API; Apple is not in the request path and does not see prompts or responses. Usage is billed to your Anthropic account at [standard API pricing](https://platform.claude.com/docs/en/about-claude/pricing), so your organization needs an available credit balance or an active billing method. Your app decides when to use Claude and when to use Apple's on-device model: pass whichever model you want to each session.
9Requests go directly from your app to the Claude API; Apple is not in the request path and does not see prompts or responses. Usage is billed to your Anthropic account at [standard API pricing](https://platform.claude.com/docs/en/about-claude/pricing), so your organization needs an available credit balance or an active billing method. Your app determines when to use Claude and when to use Apple's on-device model: pass whichever model you want to each session.
1010 
1111<Note>
1212 **Beta.** This package targets the Foundation Models server-side language model API introduced in the OS 27 betas. APIs might change during the beta.
from line 131
131131 
132132The first time your app uses Claude on a device, the app requests a challenge from Anthropic, attests the device with Apple's `DCAppAttestService`, and exchanges the verified attestation for an access token. The Claude for Foundation Models package runs this flow automatically and requests new tokens as they expire; there is no attestation code for you to write.
133133 
134Tokens are scoped to your workspace, expire after one hour, and authorize only [Messages API](https://platform.claude.com/docs/en/api/messages/create) calls. They carry no end-user identity: App Attest identifies your app, not the person using it, so handle any per-user logic in your app.
134Tokens are scoped to your workspace, expire after 1 hour, and authorize only [Messages API](https://platform.claude.com/docs/en/api/messages/create) calls. They carry no end-user identity: App Attest identifies your app, not the person using it, so handle any per-user logic in your app.
135135 
136136To stop a compromised or retired app, revoke its integration. In the Claude Console, go to the [App integrations](https://platform.claude.com/settings/workspaces/default/app-integrations) page (`platform.claude.com/settings/workspaces/default/app-integrations`). Each app integration belongs to one workspace. In the workspace picker in the sidebar, select the workspace that holds the integration. Select the integration and click **Revoke**, then confirm. Revoking an integration revokes its outstanding tokens, and its registered devices can no longer request new ones. Revocation is permanent, so create a new app integration to restore access.
137137 
from line 193
193193 
194194### Client-side tools
195195 
196The framework's `tools:` array works unchanged. Conform your types to `Tool`, pass them to `LanguageModelSession`, and the framework invokes them on the device when Claude calls them. See [Tool use with Claude](https://platform.claude.com/docs/en/agents-and-tools/tool-use/overview).
196The framework's `tools:` array works unchanged. Conform your types to `Tool`, pass them to `LanguageModelSession`, and the framework runs them on the device when Claude calls them. See [Tool use with Claude](https://platform.claude.com/docs/en/agents-and-tools/tool-use/overview).
197197 
198198```swift
199199let session = LanguageModelSession(model: model, tools: [FindRestaurantsTool()])
from line 201
201201 
202202### Server-side tools
203203 
204[Server tools](https://platform.claude.com/docs/en/agents-and-tools/tool-use/server-tools) (web search, web fetch, and code execution) run on Anthropic's infrastructure within a single round trip, with nothing for the framework to invoke on the device. Configure them for each model with `serverTools:`:
204[Server tools](https://platform.claude.com/docs/en/agents-and-tools/tool-use/server-tools) (web search, web fetch, and code execution) run on Anthropic's infrastructure within a single round trip, with nothing for the framework to call on the device. Configure them for each model with `serverTools:`:
205205 
206206```swift
207207let model = ClaudeLanguageModel(
Feedback