Recover from bad model output

Repair a tool call

repairToolCall fires when a call references a tool that isn't in your set. Return a corrected ToolCall, or nil to leave it unhandled.

let result = try await generateText(
  model: model, prompt: "…", tools: [weather],
  repairToolCall: { call, tools in
    call.name == "get_wether"
      ? ToolCall(id: call.id, name: "get_weather", arguments: call.arguments) : nil
  }
)

For a heavier fix, re-ask a cheap model to reformat the arguments against the tool's schema and return the corrected call.

Repair structured output

repairText on generateObject receives the raw text and the parse error, and returns corrected JSON. Stripping Markdown fences covers the common case.

let result = try await generateObject(
  model: model, of: Summary.self, schema: summarySchema, prompt: "…",
  repairText: { text, _ in
    text.replacingOccurrences(of: "```json", with: "")
        .replacingOccurrences(of: "```", with: "")
  }
)

Prefer structure that can't drift

When you need both tool use and a final object, output: on generateText produces the object alongside the calls; read it from result.experimentalOutput. For a list, generateObjectArray decodes a typed array directly.