Support per-request HttpClient transformations in the OpenAI AI int…

…egration package (#4418)

.changeset/cuddly-jobs-act.md

@@ -0,0 +1,39 @@
+---
+"@effect/ai-openai": patch
+---
+
+Support per-request HTTP client transformations in the OpenAi AI integration package.
+
+For example:
+
+```ts
+import { Completions } from "@effect/ai"
+import { OpenAiClient, OpenAiCompletions, OpenAiConfig } from "@effect/ai-openai"
+import { HttpClient, HttpClientRequest } from "@effect/platform"
+import { NodeHttpClient } from "@effect/platform-node"
+import { Config, Effect, Layer } from "effect"
+
+const OpenAi = OpenAiClient.layerConfig({
+  apiKey: Config.redacted("OPENAI_API_KEY")
+}).pipe(Layer.provide(NodeHttpClient.layerUndici))
+
+const Gpt4oCompletions = OpenAiCompletions.layer({
+  model: "gpt-4o"
+}).pipe(Layer.provide(OpenAi))
+
+const program = Effect.gen(function*() {
+  const completions = yield* Completions.Completions
+
+  yield* completions.create("Tell me a dad joke").pipe(
+    // Per-request HTTP client transforms which are only applied if
+    // the OpenAi provider is in use
+    OpenAiConfig.withClientTransform(
+      HttpClient.mapRequest(
+        HttpClientRequest.setHeader("x-dad-jokes", "are-awesome")
+      )
+    )
+  )
+})
+
+program.pipe(Effect.provide(Gpt4oCompletions), Effect.runPromise)
+```

packages/ai/openai/package.json

@@ -49,7 +49,7 @@
     "@effect/experimental": "workspace:^",
     "@effect/platform": "workspace:^",
     "@effect/platform-node": "workspace:^",
-    "@tim-smart/openapi-gen": "^0.3.2",
+    "@tim-smart/openapi-gen": "^0.3.3",
     "effect": "workspace:^"
   },
   "dependencies": {