feat: initial cloudflare-ai alpha release

package.json

@@ -34,6 +34,8 @@
     "packages/sdk/server-ai/examples/bedrock",
     "packages/sdk/server-ai/examples/openai",
     "packages/sdk/server-ai/examples/vercel-ai",
+    "packages/sdk/cloudflare-ai",
+    "packages/sdk/cloudflare-ai/example",
     "packages/telemetry/browser-telemetry",
     "contract-tests",
     "packages/sdk/combined-browser"

packages/sdk/cloudflare-ai/.eslintignore

@@ -0,0 +1,2 @@
+example
+

packages/sdk/cloudflare-ai/CHANGELOG.md

@@ -0,0 +1,39 @@
+# Changelog
+
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [Unreleased]
+
+### Added
+- Initial MVP release
+- AI Config support for Cloudflare Workers AI
+- Model name aliasing and resolution
+- Template-based prompt interpolation with Mustache
+- Comprehensive metrics tracking
+- TypeScript type definitions
+- Support for 15+ common AI models
+- CloudflareAIModelMapper for model ID resolution
+- LDAIClient with config method
+- LDAIConfigTracker for analytics
+- Basic test coverage
+- Documentation and examples
+
+## [0.1.0] - 2025-10-07
+
+### Added
+- Initial alpha release of `@launchdarkly/cloudflare-server-sdk-ai`
+- `initAi(ldClient, clientSideID?, kvNamespace?)` initializer
+- `aiClient.config(key, context, defaultValue, variables?)`
+- `config.toCloudflareWorkersAI(options?)` for mapping to Workers AI format
+<!-- Removed optional runWithWorkersAI convenience; use env.AI.run directly -->
+- Template interpolation for messages using variables
+- Metrics tracking: success, duration, token usage, optional error tracking
+- Example Cloudflare Worker and setup docs
+
+### Notes
+- Requires LaunchDarkly Cloudflare KV integration to be enabled
+- Tested with Workers AI [ai] binding and `nodejs_compat` flag
+

packages/sdk/cloudflare-ai/LICENSE

@@ -0,0 +1,70 @@
+Apache License
+Version 2.0, January 2004
+http://www.apache.org/licenses/
+
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+8. Limitation of Liability. In no event and under no legal theory, whether in tort (including negligence), contract, or otherwise, unless required by applicable law (such as deliberate and grossly negligent acts) or agreed to in writing, shall any Contributor be liable to You for damages, including any direct, indirect, special, incidental, or consequential damages of any character arising as a result of this License or out of the use or inability to use the Work (including but not limited to damages for loss of goodwill, work stoppage, computer failure or malfunction, or any and all other commercial damages or losses), even if such Contributor has been advised of the possibility of such damages.
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+9. Accepting Warranty or Additional Liability. While redistributing the Work or Derivative Works thereof, You may choose to offer, and charge a fee for, acceptance of support, warranty, indemnity, or other liability obligations and/or rights consistent with this License. However, in accepting such obligations, You may act only on Your own behalf and on Your sole responsibility, not on behalf of any other Contributor, and only if You agree to indemnify, defend, and hold each Contributor harmless for any liability incurred by, or claims asserted against, such Contributor by reason of your accepting any such warranty or additional liability.
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+See the License for the specific language governing permissions and
+limitations under the License.
+

packages/sdk/cloudflare-ai/README.md

@@ -0,0 +1,116 @@
+# LaunchDarkly AI SDK for Cloudflare Workers
+
+# ⛔️⛔️⛔️⛔️
+
+> [!CAUTION]
+> This library is an alpha version and should not be considered ready for production use while this message is visible.
+
+# ☝️☝️☝️☝️☝️☝️
+
+## LaunchDarkly overview
+
+[LaunchDarkly](https://www.launchdarkly.com) is a feature management platform that serves over 100 billion feature flags daily to help teams build better software, faster. [Get started](https://docs.launchdarkly.com/home/getting-started) using LaunchDarkly today!
+
+[![Twitter Follow](https://img.shields.io/twitter/follow/launchdarkly.svg?style=social&label=Follow&maxAge=2592000)](https://twitter.com/intent/follow?screen_name=launchdarkly)
+
+## Quick start
+
+Assumes you’ve installed the LaunchDarkly Cloudflare server SDK and enabled KV.
+
+1) Install:
+
+```shell
+npm install @launchdarkly/cloudflare-server-sdk-ai --save
+```
+
+2) Configure `wrangler.toml`:
+
+```toml
+compatibility_flags = ["nodejs_compat"]
+
+[ai]
+binding = "AI"
+```
+
+3) Use in a Worker:
+
+```typescript
+import { init } from '@launchdarkly/cloudflare-server-sdk';
+import { initAi } from '@launchdarkly/cloudflare-server-sdk-ai';
+
+export default {
+  async fetch(_request, env, ctx) {
+    const ldClient = init(env.LD_CLIENT_ID, env.LD_KV, { sendEvents: true });
+    await ldClient.waitForInitialization();
+
+    const ai = initAi(ldClient, { clientSideID: env.LD_CLIENT_ID, kvNamespace: env.LD_KV });
+    const context = { kind: 'user', key: 'example-user' };
+
+    const config = await ai.config(
+      'my-ai-config',
+      context,
+      { enabled: false, model: { name: '@cf/meta/llama-3-8b-instruct' } },
+      { username: 'Sandy' },
+    );
+
+    if (!config.enabled) return new Response('AI disabled', { status: 503 });
+
+    const wc = config.toWorkersAI(env.AI);
+    const result = await config.tracker.trackWorkersAIMetrics(() => env.AI.run(wc.model, wc));
+
+    ctx.waitUntil(ldClient.flush().finally(() => ldClient.close()));
+    return Response.json(result);
+  }
+};
+```
+
+See `example/` for a full working sample.
+
+## API (brief)
+
+• `initAi(ldClient, options?)` → `LDAIClient`
+• `aiClient.config(key, context, defaultValue, variables?)` → `Promise<LDAIConfig>`
+• `aiClient.agent(key, context, defaultValue, variables?)` → `Promise<LDAIAgent>`
+• `aiClient.agents(configs, context)` → `Promise<Record<key, LDAIAgent>>`
+• `config.toWorkersAI(env.AI, options?)` → `WorkersAIConfig`
+
+Metrics:
+
+```typescript
+await config.tracker.trackWorkersAIMetrics(() => env.AI.run(wc.model, wc));
+const stream = config.tracker.trackWorkersAIStreamMetrics(() => env.AI.run(wc.model, { ...wc, stream: true }));
+```
+
+Notes:
+- Templates use Mustache. Variables you pass plus the LD context via `{{ldctx.*}}` are available.
+- Parameter names are normalized when mapping to Workers AI (e.g., `maxTokens`/`maxtokens` → `max_tokens`, `topP`/`topp` → `top_p`, `topK`/`topk` → `top_k`).
+
+
+## Contributing
+
+We encourage pull requests and other contributions from the community. Check out our [contributing guidelines](CONTRIBUTING.md) for instructions on how to contribute to this SDK.
+
+## About LaunchDarkly
+
+- LaunchDarkly is a continuous delivery platform that provides feature flags as a service and allows developers to iterate quickly and safely. We allow you to easily flag your features and manage them from the LaunchDarkly dashboard. With LaunchDarkly, you can:
+  - Roll out a new feature to a subset of your users (like a group of users who opt-in to a beta tester group), gathering feedback and bug reports from real-world use cases.
+  - Gradually roll out a feature to an increasing percentage of users, and track the effect that the feature has on key metrics (for instance, how likely is a user to complete a purchase if they have feature A versus feature B?).
+  - Turn off a feature that you realize is causing performance problems in production, without needing to re-deploy, or even restart the application with a changed configuration file.
+  - Grant access to certain features based on user attributes, like payment plan (eg: users on the 'gold' plan get access to more features than users in the 'silver' plan).
+  - Disable parts of your application to facilitate maintenance, without taking everything offline.
+- LaunchDarkly provides feature flag SDKs for a wide variety of languages and technologies. Check out [our documentation](https://docs.launchdarkly.com/sdk) for a complete list.
+- Explore LaunchDarkly
+  - [launchdarkly.com](https://www.launchdarkly.com/ 'LaunchDarkly Main Website') for more information
+  - [docs.launchdarkly.com](https://docs.launchdarkly.com/ 'LaunchDarkly Documentation') for our documentation and SDK reference guides
+  - [apidocs.launchdarkly.com](https://apidocs.launchdarkly.com/ 'LaunchDarkly API Documentation') for our API documentation
+  - [blog.launchdarkly.com](https://blog.launchdarkly.com/ 'LaunchDarkly Blog Documentation') for the latest product updates
+
+[cf-ai-sdk-ci-badge]: https://github.com/launchdarkly/js-core/actions/workflows/cloudflare-ai.yml/badge.svg
+[cf-ai-sdk-ci]: https://github.com/launchdarkly/js-core/actions/workflows/cloudflare-ai.yml
+[cf-ai-sdk-npm-badge]: https://img.shields.io/npm/v/@launchdarkly/cloudflare-server-sdk-ai.svg?style=flat-square
+[cf-ai-sdk-npm-link]: https://www.npmjs.com/package/@launchdarkly/cloudflare-server-sdk-ai
+[cf-ai-sdk-ghp-badge]: https://img.shields.io/static/v1?label=GitHub+Pages&message=API+reference&color=00add8
+[cf-ai-sdk-ghp-link]: https://launchdarkly.github.io/js-core/packages/sdk/cloudflare-ai/docs/
+[cf-ai-sdk-dm-badge]: https://img.shields.io/npm/dm/@launchdarkly/cloudflare-server-sdk-ai.svg?style=flat-square
+[cf-ai-sdk-dt-badge]: https://img.shields.io/npm/dt/@launchdarkly/cloudflare-server-sdk-ai.svg?style=flat-square
+