diff --git a/packages/opencode/src/server/routes/provider.ts b/packages/opencode/src/server/routes/provider.ts
index 64fe34f450..59a4a686b2 100644
--- a/packages/opencode/src/server/routes/provider.ts
+++ b/packages/opencode/src/server/routes/provider.ts
@@ -28,7 +28,7 @@ export const ProviderRoutes = lazy(() =>
               "application/json": {
                 schema: resolver(
                   z.object({
-                    all: ModelsDev.Provider.array(),
+                    all: Provider.Info.array(),
                     default: z.record(z.string(), z.string()),
                     connected: z.array(z.string()),
                   }),
diff --git a/packages/opencode/src/server/routes/session.ts b/packages/opencode/src/server/routes/session.ts
index c33c5e989b..b4c13bca0f 100644
--- a/packages/opencode/src/server/routes/session.ts
+++ b/packages/opencode/src/server/routes/session.ts
@@ -906,7 +906,7 @@ export const SessionRoutes = lazy(() =>
             description: "Created message",
             content: {
               "application/json": {
-                schema: resolver(MessageV2.Assistant),
+                schema: resolver(MessageV2.WithParts),
               },
             },
           },
diff --git a/packages/opencode/test/tool/webfetch.test.ts b/packages/opencode/test/tool/webfetch.test.ts
index 5233f10816..00e9dcc96c 100644
--- a/packages/opencode/test/tool/webfetch.test.ts
+++ b/packages/opencode/test/tool/webfetch.test.ts
@@ -17,58 +17,25 @@ const ctx = {
   ask: async () => {},
 }
 
-type TimerID = ReturnType<typeof setTimeout>
-
-async function withFetch(
-  mockFetch: (input: string | URL | Request, init?: RequestInit) => Promise<Response>,
-  fn: () => Promise<void>,
-) {
-  const originalFetch = globalThis.fetch
-  globalThis.fetch = mockFetch as unknown as typeof fetch
-  try {
-    await fn()
-  } finally {
-    globalThis.fetch = originalFetch
-  }
-}
-
-async function withTimers(fn: (state: { ids: TimerID[]; cleared: TimerID[] }) => Promise<void>) {
-  const set = globalThis.setTimeout
-  const clear = globalThis.clearTimeout
-  const ids: TimerID[] = []
-  const cleared: TimerID[] = []
-
-  globalThis.setTimeout = ((...args: Parameters<typeof setTimeout>) => {
-    const id = set(...args)
-    ids.push(id)
-    return id
-  }) as typeof setTimeout
-
-  globalThis.clearTimeout = ((id?: TimerID) => {
-    if (id !== undefined) cleared.push(id)
-    return clear(id)
-  }) as typeof clearTimeout
-
-  try {
-    await fn({ ids, cleared })
-  } finally {
-    ids.forEach(clear)
-    globalThis.setTimeout = set
-    globalThis.clearTimeout = clear
-  }
+async function withFetch(fetch: (req: Request) => Response | Promise<Response>, fn: (url: URL) => Promise<void>) {
+  using server = Bun.serve({ port: 0, fetch })
+  await fn(server.url)
 }
 
 describe("tool.webfetch", () => {
   test("returns image responses as file attachments", async () => {
     const bytes = new Uint8Array([137, 80, 78, 71, 13, 10, 26, 10])
     await withFetch(
-      async () => new Response(bytes, { status: 200, headers: { "content-type": "IMAGE/PNG; charset=binary" } }),
-      async () => {
+      () => new Response(bytes, { status: 200, headers: { "content-type": "IMAGE/PNG; charset=binary" } }),
+      async (url) => {
         await Instance.provide({
           directory: projectRoot,
           fn: async () => {
             const webfetch = await WebFetchTool.init()
-            const result = await webfetch.execute({ url: "https://example.com/image.png", format: "markdown" }, ctx)
+            const result = await webfetch.execute(
+              { url: new URL("/image.png", url).toString(), format: "markdown" },
+              ctx,
+            )
             expect(result.output).toBe("Image fetched successfully")
             expect(result.attachments).toBeDefined()
             expect(result.attachments?.length).toBe(1)
@@ -87,17 +54,17 @@ describe("tool.webfetch", () => {
   test("keeps svg as text output", async () => {
     const svg = '<svg xmlns="http://www.w3.org/2000/svg"><text>hello</text></svg>'
     await withFetch(
-      async () =>
+      () =>
         new Response(svg, {
           status: 200,
           headers: { "content-type": "image/svg+xml; charset=UTF-8" },
         }),
-      async () => {
+      async (url) => {
         await Instance.provide({
           directory: projectRoot,
           fn: async () => {
             const webfetch = await WebFetchTool.init()
-            const result = await webfetch.execute({ url: "https://example.com/image.svg", format: "html" }, ctx)
+            const result = await webfetch.execute({ url: new URL("/image.svg", url).toString(), format: "html" }, ctx)
             expect(result.output).toContain("<svg")
             expect(result.attachments).toBeUndefined()
           },
@@ -108,17 +75,17 @@ describe("tool.webfetch", () => {
 
   test("keeps text responses as text output", async () => {
     await withFetch(
-      async () =>
+      () =>
         new Response("hello from webfetch", {
           status: 200,
           headers: { "content-type": "text/plain; charset=utf-8" },
         }),
-      async () => {
+      async (url) => {
         await Instance.provide({
           directory: projectRoot,
           fn: async () => {
             const webfetch = await WebFetchTool.init()
-            const result = await webfetch.execute({ url: "https://example.com/file.txt", format: "text" }, ctx)
+            const result = await webfetch.execute({ url: new URL("/file.txt", url).toString(), format: "text" }, ctx)
             expect(result.output).toBe("hello from webfetch")
             expect(result.attachments).toBeUndefined()
           },
@@ -126,28 +93,4 @@ describe("tool.webfetch", () => {
       },
     )
   })
-
-  test("clears timeout when fetch rejects", async () => {
-    await withTimers(async ({ ids, cleared }) => {
-      await withFetch(
-        async () => {
-          throw new Error("boom")
-        },
-        async () => {
-          await Instance.provide({
-            directory: projectRoot,
-            fn: async () => {
-              const webfetch = await WebFetchTool.init()
-              await expect(
-                webfetch.execute({ url: "https://example.com/file.txt", format: "text" }, ctx),
-              ).rejects.toThrow("boom")
-            },
-          })
-        },
-      )
-
-      expect(ids).toHaveLength(1)
-      expect(cleared).toContain(ids[0])
-    })
-  })
 })
diff --git a/packages/sdk/js/src/v2/gen/types.gen.ts b/packages/sdk/js/src/v2/gen/types.gen.ts
index 0a9aa4358e..e21e093c6f 100644
--- a/packages/sdk/js/src/v2/gen/types.gen.ts
+++ b/packages/sdk/js/src/v2/gen/types.gen.ts
@@ -3936,7 +3936,10 @@ export type SessionShellResponses = {
   /**
    * Created message
    */
-  200: AssistantMessage
+  200: {
+    info: Message
+    parts: Array<Part>
+  }
 }
 
 export type SessionShellResponse = SessionShellResponses[keyof SessionShellResponses]
@@ -4212,68 +4215,7 @@ export type ProviderListResponses = {
    * List of providers
    */
   200: {
-    all: Array<{
-      api?: string
-      name: string
-      env: Array<string>
-      id: string
-      npm?: string
-      models: {
-        [key: string]: {
-          id: string
-          name: string
-          family?: string
-          release_date: string
-          attachment: boolean
-          reasoning: boolean
-          temperature: boolean
-          tool_call: boolean
-          interleaved?:
-            | true
-            | {
-                field: "reasoning_content" | "reasoning_details"
-              }
-          cost?: {
-            input: number
-            output: number
-            cache_read?: number
-            cache_write?: number
-            context_over_200k?: {
-              input: number
-              output: number
-              cache_read?: number
-              cache_write?: number
-            }
-          }
-          limit: {
-            context: number
-            input?: number
-            output: number
-          }
-          modalities?: {
-            input: Array<"text" | "audio" | "image" | "video" | "pdf">
-            output: Array<"text" | "audio" | "image" | "video" | "pdf">
-          }
-          experimental?: boolean
-          status?: "alpha" | "beta" | "deprecated"
-          options: {
-            [key: string]: unknown
-          }
-          headers?: {
-            [key: string]: string
-          }
-          provider?: {
-            npm?: string
-            api?: string
-          }
-          variants?: {
-            [key: string]: {
-              [key: string]: unknown
-            }
-          }
-        }
-      }
-    }>
+    all: Array<Provider>
     default: {
       [key: string]: string
     }
diff --git a/packages/sdk/openapi.json b/packages/sdk/openapi.json
index 207b400a7d..0f3b2c3971 100644
--- a/packages/sdk/openapi.json
+++ b/packages/sdk/openapi.json
@@ -4098,7 +4098,19 @@
             "content": {
               "application/json": {
                 "schema": {
-                  "$ref": "#/components/schemas/AssistantMessage"
+                  "type": "object",
+                  "properties": {
+                    "info": {
+                      "$ref": "#/components/schemas/Message"
+                    },
+                    "parts": {
+                      "type": "array",
+                      "items": {
+                        "$ref": "#/components/schemas/Part"
+                      }
+                    }
+                  },
+                  "required": ["info", "parts"]
                 }
               }
             }
@@ -4790,211 +4802,7 @@
                     "all": {
                       "type": "array",
                       "items": {
-                        "type": "object",
-                        "properties": {
-                          "api": {
-                            "type": "string"
-                          },
-                          "name": {
-                            "type": "string"
-                          },
-                          "env": {
-                            "type": "array",
-                            "items": {
-                              "type": "string"
-                            }
-                          },
-                          "id": {
-                            "type": "string"
-                          },
-                          "npm": {
-                            "type": "string"
-                          },
-                          "models": {
-                            "type": "object",
-                            "propertyNames": {
-                              "type": "string"
-                            },
-                            "additionalProperties": {
-                              "type": "object",
-                              "properties": {
-                                "id": {
-                                  "type": "string"
-                                },
-                                "name": {
-                                  "type": "string"
-                                },
-                                "family": {
-                                  "type": "string"
-                                },
-                                "release_date": {
-                                  "type": "string"
-                                },
-                                "attachment": {
-                                  "type": "boolean"
-                                },
-                                "reasoning": {
-                                  "type": "boolean"
-                                },
-                                "temperature": {
-                                  "type": "boolean"
-                                },
-                                "tool_call": {
-                                  "type": "boolean"
-                                },
-                                "interleaved": {
-                                  "anyOf": [
-                                    {
-                                      "type": "boolean",
-                                      "const": true
-                                    },
-                                    {
-                                      "type": "object",
-                                      "properties": {
-                                        "field": {
-                                          "type": "string",
-                                          "enum": ["reasoning_content", "reasoning_details"]
-                                        }
-                                      },
-                                      "required": ["field"],
-                                      "additionalProperties": false
-                                    }
-                                  ]
-                                },
-                                "cost": {
-                                  "type": "object",
-                                  "properties": {
-                                    "input": {
-                                      "type": "number"
-                                    },
-                                    "output": {
-                                      "type": "number"
-                                    },
-                                    "cache_read": {
-                                      "type": "number"
-                                    },
-                                    "cache_write": {
-                                      "type": "number"
-                                    },
-                                    "context_over_200k": {
-                                      "type": "object",
-                                      "properties": {
-                                        "input": {
-                                          "type": "number"
-                                        },
-                                        "output": {
-                                          "type": "number"
-                                        },
-                                        "cache_read": {
-                                          "type": "number"
-                                        },
-                                        "cache_write": {
-                                          "type": "number"
-                                        }
-                                      },
-                                      "required": ["input", "output"]
-                                    }
-                                  },
-                                  "required": ["input", "output"]
-                                },
-                                "limit": {
-                                  "type": "object",
-                                  "properties": {
-                                    "context": {
-                                      "type": "number"
-                                    },
-                                    "input": {
-                                      "type": "number"
-                                    },
-                                    "output": {
-                                      "type": "number"
-                                    }
-                                  },
-                                  "required": ["context", "output"]
-                                },
-                                "modalities": {
-                                  "type": "object",
-                                  "properties": {
-                                    "input": {
-                                      "type": "array",
-                                      "items": {
-                                        "type": "string",
-                                        "enum": ["text", "audio", "image", "video", "pdf"]
-                                      }
-                                    },
-                                    "output": {
-                                      "type": "array",
-                                      "items": {
-                                        "type": "string",
-                                        "enum": ["text", "audio", "image", "video", "pdf"]
-                                      }
-                                    }
-                                  },
-                                  "required": ["input", "output"]
-                                },
-                                "experimental": {
-                                  "type": "boolean"
-                                },
-                                "status": {
-                                  "type": "string",
-                                  "enum": ["alpha", "beta", "deprecated"]
-                                },
-                                "options": {
-                                  "type": "object",
-                                  "propertyNames": {
-                                    "type": "string"
-                                  },
-                                  "additionalProperties": {}
-                                },
-                                "headers": {
-                                  "type": "object",
-                                  "propertyNames": {
-                                    "type": "string"
-                                  },
-                                  "additionalProperties": {
-                                    "type": "string"
-                                  }
-                                },
-                                "provider": {
-                                  "type": "object",
-                                  "properties": {
-                                    "npm": {
-                                      "type": "string"
-                                    },
-                                    "api": {
-                                      "type": "string"
-                                    }
-                                  }
-                                },
-                                "variants": {
-                                  "type": "object",
-                                  "propertyNames": {
-                                    "type": "string"
-                                  },
-                                  "additionalProperties": {
-                                    "type": "object",
-                                    "propertyNames": {
-                                      "type": "string"
-                                    },
-                                    "additionalProperties": {}
-                                  }
-                                }
-                              },
-                              "required": [
-                                "id",
-                                "name",
-                                "release_date",
-                                "attachment",
-                                "reasoning",
-                                "temperature",
-                                "tool_call",
-                                "limit",
-                                "options"
-                              ]
-                            }
-                          }
-                        },
-                        "required": ["name", "env", "id", "models"]
+                        "$ref": "#/components/schemas/Provider"
                       }
                     },
                     "default": {