diff --git a/packages/tfcode/src/provider/sdk/toothfairyai/toothfairyai-provider.ts b/packages/tfcode/src/provider/sdk/toothfairyai/toothfairyai-provider.ts
index 3e6bb0ac4..994a43fe8 100644
--- a/packages/tfcode/src/provider/sdk/toothfairyai/toothfairyai-provider.ts
+++ b/packages/tfcode/src/provider/sdk/toothfairyai/toothfairyai-provider.ts
@@ -1,8 +1,10 @@
 import type { LanguageModelV2 } from "@ai-sdk/provider"
 import { type FetchFunction, withoutTrailingSlash } from "@ai-sdk/provider-utils"
 import { OpenAICompatibleChatLanguageModel } from "../copilot/chat/openai-compatible-chat-language-model"
+import { Log } from "@/util/log"
 
 const VERSION = "1.0.0"
+const log = Log.create({ service: "provider.toothfairyai" })
 
 export type ToothFairyAIModelId = string
 
@@ -44,6 +46,7 @@ export function createToothFairyAI(options: ToothFairyAIProviderSettings = {}):
 
     if (url.pathname === "/chat/completions") {
       url.pathname = "/predictions"
+      log.debug("redirecting /chat/completions to /predictions")
     }
 
     let body: Record<string, unknown> | undefined
@@ -63,6 +66,34 @@ export function createToothFairyAI(options: ToothFairyAIProviderSettings = {}):
     }
     headers.delete("Authorization")
 
+    log.info("request", {
+      url: url.href,
+      method: init?.method ?? "GET",
+      hasTools: !!body?.tools,
+      toolCount: (body?.tools as any[])?.length ?? 0,
+      model: body?.model,
+    })
+
+    log.debug("request body", {
+      messages: body?.messages
+        ? (body.messages as any[]).map((m) => ({
+            role: m.role,
+            content: typeof m.content === "string" ? m.content.slice(0, 100) : m.content,
+            tool_calls: m.tool_calls,
+            tool_call_id: m.tool_call_id,
+          }))
+        : undefined,
+      tools: body?.tools
+        ? (body.tools as any[]).map((t) => ({
+            name: t.function?.name,
+            description: t.function?.description?.slice(0, 50),
+          }))
+        : undefined,
+      tool_choice: body?.tool_choice,
+      max_tokens: body?.max_tokens,
+      temperature: body?.temperature,
+    })
+
     const fetchFn = options.fetch ?? globalThis.fetch
     const res = await fetchFn(url, {
       ...init,
@@ -70,6 +101,21 @@ export function createToothFairyAI(options: ToothFairyAIProviderSettings = {}):
       body: body ? JSON.stringify(body) : init?.body,
     })
 
+    log.info("response", {
+      status: res.status,
+      statusText: res.statusText,
+      contentType: res.headers.get("content-type"),
+    })
+
+    if (!res.ok) {
+      const errorBody = await res.text().catch(() => "Unable to read error body")
+      log.error("request failed", {
+        status: res.status,
+        statusText: res.statusText,
+        errorBody: errorBody.slice(0, 500),
+      })
+    }
+
     if (res.body && res.headers.get("content-type")?.includes("text/event-stream")) {
       const reader = res.body.getReader()
       const decoder = new TextDecoder()
@@ -92,6 +138,20 @@ export function createToothFairyAI(options: ToothFairyAIProviderSettings = {}):
               const json = line.slice(6).trim()
               if (json && !json.startsWith('{"status":')) {
                 filtered.push(line)
+                // Log tool calls and finish_reason
+                try {
+                  const parsed = JSON.parse(json)
+                  if (parsed.choices?.[0]?.delta?.tool_calls) {
+                    log.debug("stream tool_calls", {
+                      tool_calls: parsed.choices[0].delta.tool_calls,
+                    })
+                  }
+                  if (parsed.choices?.[0]?.finish_reason) {
+                    log.info("stream finish_reason", {
+                      finish_reason: parsed.choices[0].finish_reason,
+                    })
+                  }
+                } catch {}
               }
             } else {
               filtered.push(line)