feat: integrate ai-sdk provider

[uinstinct]

Description

Adds a separate ai-sdk provider into openai-adapters for usage in the cli.

Currently supports openai, anthropic, and openrouter.

Usage:

In your config.yaml, add the provider as ai-sdk and model as <provider-name>/<model-name>. Here is an example:

name: Local Config
version: 1.0.0
schema: v1
models:
  - name: Claude via AI SDK
    provider: ai-sdk
    model: anthropic/claude-opus-4-6
    apiKey: <api-key>
  - name: Openai via AI SDK
    provider: ai-sdk
    model: openai/gpt-5
    apiKey: <api-key>
  - name: Openrouter via AI SDK
    provider: ai-sdk
    model: openrouter/z-ai/glm-4.5-air:free
    apiKey: <api-key>

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Checklist

• [] I've read the contributing guide
• [] The relevant docs, if any, have been updated or created
• [] The relevant tests, if any, have been updated or created

Screen recording or screenshot

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Tests

[ What tests were added or updated to ensure the changes work as expected? ]

---

Summary by cubic

Add an ai-sdk provider so the CLI can use Vercel AI SDK models (OpenAI, Anthropic, and OpenRouter) for chat and embeddings. Tool calls are converted to AI SDK messages, and tool schemas are normalized for OpenAI strict compatibility.

• New Features

  • Added AiSdkApi with chat completions (streaming and non-streaming) and embeddings via @ai-sdk/openai, including Anthropic and OpenRouter through OpenAI-compatible endpoints.
  • Accepts model as "provider/model" (e.g., "openai/gpt-4o"); CLI forwards the model.
  • Converts assistant tool_calls to Vercel AI SDK messages, supports tools and tool_choice; streams converted back to OpenAI-style chunks.
  • Normalizes tool parameter schemas for OpenAI strict mode (adds required and disables additionalProperties).
  • Wired into constructLlmApi and types (AiSdkConfig); legacy completions, FIM, and rerank are not supported.

• Migration

  • In CLI config, set provider: "ai-sdk" and model: "/" (e.g., "openai/gpt-4o", "anthropic/claude-3.5-sonnet", or "openrouter/").
  • Provide apiKey/apiBase and any requestOptions as needed.

^{Written for commit ec8263d. Summary will update on new commits.}

[cubic-dev-ai]

1 issue found across 6 files

Prompt for AI agents (all issues)

Check if these issues are valid — if so, understand the root cause of each and fix them. If appropriate, use sub-agents to investigate and fix each issue separately.


<file name="packages/openai-adapters/src/apis/AiSdk.ts">

<violation number="1" location="packages/openai-adapters/src/apis/AiSdk.ts:165">
P2: finish_reason mapping collapses "length" and "content-filter" into "stop", hiding truncation or content-filter events from OpenAI-style clients.</violation>
</file>

_{Reply with feedback, questions, or to request a fix. Tag @cubic-dev-ai to re-run a review.}

[cubic-dev-ai]

P2: finish_reason mapping collapses "length" and "content-filter" into "stop", hiding truncation or content-filter events from OpenAI-style clients.

Prompt for AI agents

Check if this issue is valid — if so, understand the root cause and fix it. At packages/openai-adapters/src/apis/AiSdk.ts, line 165:

<comment>finish_reason mapping collapses "length" and "content-filter" into "stop", hiding truncation or content-filter events from OpenAI-style clients.</comment>

<file context>
@@ -0,0 +1,303 @@
+            refusal: null,
+          },
+          finish_reason:
+            result.finishReason === "tool-calls" ? "tool_calls" : "stop",
+          logprobs: null,
+        },
</file context>