[Bug/错误]: 升级至最新版本后 anthropic 接口转 codex 接口报错

[jukanntenn]

Pre-submission Checklist / 提交前检查

• I have searched the existing issues and this bug has not been reported / 我已搜索现有 issues，此 Bug 尚未被报告
• I have read the documentation / 我已阅读文档
• I am using the latest version of AxonHub / 我正在使用 AxonHub 的最新版本

FAQ Check / FAQ 检查

• I have checked the FAQ and this bug is not covered there / 我已查阅 FAQ，此 Bug 未被覆盖

Bug Description / Bug 描述

渠道格式为 Anthropic message，客户端为 codex，所有请求均报 422 错误：

failed to stream request: Request failed: Unprocessable Entity, error: {"detail":[{"type":"missing","loc":["body","tools",10,"input_schema"],"msg":"Field required","input":{"type":"web_search_20250305","name":"web_search"}}]}, code: Unprocessable Entity, type: api_error

Steps to Reproduce / 复现步骤

1. 创建 Anthropic 渠道
2. 在 codex 中使用

Expected Behavior / 期望行为

原 0.9.x 版本使用时正常，升级 1.0 版本后报错，这可能是个回归 bug，期望 1.0 能和 0.9 版本一样正常使用。

Error Message / 错误消息

failed to stream request: Request failed: Unprocessable Entity, error: {"detail":[{"type":"missing","loc":["body","tools",10,"input_schema"],"msg":"Field required","input":{"type":"web_search_20250305","name":"web_search"}}]}, code: Unprocessable Entity, type: api_error

Operating System / 操作系统

Linux (Ubuntu/Debian) / Linux（Ubuntu/Debian）

AxonHub Version / AxonHub 版本

v1.0.0-beta3

Usage Scenario / 使用场景

Codex

API Format / API 格式

Anthropic - Messages (/v1/messages) / Anthropic Messages, OpenAI - Responses (/v1/responses) / OpenAI Responses

Channel Type / 渠道类型

Anthropic / Anthropic

Logs / 日志

Additional Context / 其他补充信息

No response

[looplj]

上游是什么，Anthropic 官方 web search tool 没有 input_schema

https://platform.claude.com/docs/en/api/go/messages/create#web_search_tool_20260209

[mvanhorn]

Implemented in #1872 - defaults input_schema to empty object when tool parameters are nil.

[jukanntenn]

上游是什么，Anthropic 官方 web search tool 没有 input_schema

https://platform.claude.com/docs/en/api/go/messages/create#web_search_tool_20260209

上游是魔搭提供的 Anthropic 接口：https://api-inference.modelscope.cn