| // Copyright (C) 2026 The Android Open Source Project |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| import {z} from 'zod'; |
| |
| /** |
| * Convert a zod schema (how tools author their input shape) into the JSON |
| * Schema that an OpenAI-compatible `tools[].function.parameters` expects. |
| * |
| * @param schema The zod schema to convert. |
| * @returns The JSON schema as a POJO. |
| */ |
| export function zodToJsonSchema(schema: z.ZodType): Record<string, unknown> { |
| const json = z.toJSONSchema(schema, { |
| // Inline everything: tool parameter schemas must be self-contained, not |
| // carry $defs/$ref that some servers reject. |
| target: 'draft-2020-12', |
| }); |
| // Strip the $schema declaration - it's noise in a tool parameters object and |
| // some servers are picky about extra keys. |
| delete json.$schema; |
| return json; |
| } |
