feat(proxy): 增加可选的 Codex Multi-Agent V2 第三方子 Agent 明文兼容 by DeliciousBuding · Pull Request #803 · james-6-23/codex2api

DeliciousBuding · 2026-10-18T07:07:50Z

目的

为 GPT/Codex v2 父 Agent 向第三方子模型派发任务提供默认关闭的明文兼容。原生加密任务正文无法被第三方子模型读取，创建子线程成功不代表任务已送达。

实现范围

只在官方 Codex 客户端、原生 Codex 账号且请求声明了目标 collaboration 工具时生效。
删除三个协作工具的 message 加密标记，临时使用 collaboration-optimize namespace；HTTP SSE、非流式 JSON 和原生 WebSocket 回包统一还原。
本次请求确实改写过，且工具参数满足明文条件时，为缺失/null 的 encrypted_function_args 补 []；已有标记和不透明内容保持原样。
tool_choice 同步改写，其他 namespace 的同名工具不受影响；冲突或解析边界不满足时保持原请求。
子侧 agent_message 规范化由子网关负责。本 PR 已删除未接线的子侧适配器，不增加额外开关。

配置为 CODEX_MULTI_AGENT_V2_COMPAT=true，默认 false，修改后重启生效。完整条件、协议说明、回滚和参考实现见兼容文档。

验证

源码提交 61ebfcb5 的父侧单元、HTTP SSE/JSON、WebSocket 集成回归通过；Linux 定向 race 连续 3 轮、全仓 vet/build 通过。后续 58f7926b 仅删除用户指南里的 PR 暂存说明。
当前 HEAD 58f7926b 的 12 项 GitHub CI 检查全部通过，包括普通 test、六片完整 race、前端、静态检查、PostgreSQL 及安全扫描；此前 TempDir 清理失败已不再是当前阻塞。最终增量评审完成，当前没有未解决 review thread。
真实 Codex CLI + 本地 mock 的 A/B 验证：native 模式生成加密子任务，compat 模式生成全明文子任务。
2026-10-18 后续集成验收：子侧修复 NewAPI fork #259 后，GPT v2 父 → DeepSeek 子的初始派发、同一子 Agent 的 followup_task、两次只读工具调用通过；原生 GPT 子 Agent 回归通过。父标记为 []，子消息仅含 input_text。
send_message 有协议回归覆盖，尚未单独执行真实模型验收。第三方父模型强制 v2 不在本 PR 范围；第三方父模型保留 v1。

兼容性与限制

这是显式启用的实验性能力。开启后，所有匹配的 v2 子任务正文都会以明文生成，包括原生子模型；需要保留原生加密时应关闭。开关是进程级，不能按子模型区分。

上游看到非标准 namespace，可能拒绝请求，当前没有自动回退。兼容层不解密历史密文；子网关仍需支持或转换全明文 agent_message。关闭开关并重启可回退，无数据库迁移。

核心变换参考 CLIProxyAPI 同类实现（MIT），具体差异和许可链接见兼容文档。

Refs #802.

- 官方 Codex 客户端的 collaboration 工具可选用明文参数 - 删除 message.encrypted，临时改名 collaboration-optimize，响应还原 - 同步 tool_choice，冲突、无效 JSON、嵌套或数量超限时 fail-closed - 补充文档、环境变量和真实 Codex CLI 复现脚本

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docs/CODEX_MULTI_AGENT_V2_COMPAT.md

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docs/CODEX_MULTI_AGENT_V2_COMPAT.md

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📝 Walkthrough

The proxy adds an opt-in compatibility path for eligible Codex Multi-Agent v2 requests. It rewrites matching collaboration tools before forwarding requests and restores relevant response fields for requests it rewrote. Configuration guides, tests, and a local reproduction script are also added.

Changes: Codex Multi-Agent v2 compatibility

Layer / File(s)	Summary
Compatibility activation and scope `.env.example`, `README.md`, `README.zh-CN.md`, `docs/CODEX_MULTI_AGENT_V2_COMPAT.md`, `docs/CONFIGURATION.md`, `docs/DEPLOYMENT.md`, `proxy/codex_multi_agent_v2.go`, `proxy/handler.go`, `proxy/responses_ws.go`	Adds a disabled-by-default environment option, per-request state, and official Codex User-Agent matching. Documentation describes activation conditions, scope, and rollout.
Eligible request rewriting `proxy/codex_multi_agent_v2.go`, `proxy/executor.go`, `proxy/codex_multi_agent_v2_test.go`, `docs/CODEX_MULTI_AGENT_V2_COMPAT.md`	For eligible requests, removes the `message.encrypted` schema marker, renames matching collaboration tools and choices, and preserves unchanged requests when scans fail, conflict, or exceed limits.
Response restoration and delivery `proxy/codex_multi_agent_v2.go`, `proxy/handler.go`, `proxy/responses_ws.go`, `proxy/codex_multi_agent_v2_test.go`	Restores collaboration names and namespaces for optimized requests. It adds `encrypted_function_args: []` only for eligible plaintext calls. HTTP and WebSocket response paths apply the restoration.
Integration and reproduction validation `proxy/codex_multi_agent_v2_integration_test.go`, `scripts/repro-codex-multi-agent-v2.py`, `docs/CODEX_MULTI_AGENT_V2_COMPAT.md`	Adds HTTP and WebSocket integration coverage and a local Codex CLI reproduction script with `compat` and `native` modes. Documentation records child-gateway requirements, verification, limitations, and rollback steps.

Priority: ➖ Normal

Estimated code review effort: 4 (Complex) | ~45 minutes

Change: Feature

Sequence Diagram(s)

sequenceDiagram
  participant CodexClient
  participant HandlerResponses
  participant ExecuteRequest
  participant UpstreamResponses
  CodexClient->>HandlerResponses: Send Responses request
  HandlerResponses->>ExecuteRequest: Pass request with compatibility state
  ExecuteRequest->>ExecuteRequest: Rewrite eligible collaboration tools
  ExecuteRequest->>UpstreamResponses: Send rewritten request
  UpstreamResponses-->>HandlerResponses: Return response frames
  HandlerResponses->>HandlerResponses: Restore response for optimized account
  HandlerResponses-->>CodexClient: Return restored response

Merge Risk: ⚪ Minimal · up to 58f79

No unresolved issue is identified in the supplied change evidence; the PR is mergeable after normal checks.

Pre-merge checks: 4 · 1

Failed checks: 1 warning

Check name	Status	Explanation	Resolution
Docstring Coverage		Docstring coverage is 15.38% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 65 functions across 7 files. (1 skipped: …	Write docstrings for the functions missing them to satisfy the coverage threshold.

Passed checks: 4 passed

Check name	Status	Explanation
Linked Issues check		Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check		Check skipped because no linked issues were found for this pull request.
Description Check		Check skipped - CodeRabbit’s high-level summary is enabled.
Title check		标题准确概括了本次变更：新增默认关闭的 Codex Multi-Agent V2 第三方子 Agent 明文兼容能力。

Full details: Docstring Coverage

Explanation

Docstring coverage is 15.38% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 65 functions across 7 files. (1 skipped: 1 unsupported.)

Resolution

Write docstrings for the functions missing them to satisfy the coverage threshold.

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- 请求侧支持 collaboration__<tool> 扁平形式 - allowed_tools 的 tool_choice 同步改写 - 响应侧还原 tool_choice 回显，包括 allowed_tools

Codex 客户端只在 encrypted_function_args == Some([]) 时把协作工具参数当作明文。上游删除 encrypted 标记后虽然生成明文 arguments，但部分账号不会回传这个空数组，客户端仍会把 message 包进子会话的 encrypted_content。响应还原时对三个协作工具补全 encrypted_function_args: []，仅在 arguments 合法、message 为字符串且不像已知密文时生效；其余情况保持原样并保留诊断。补充单元测试和真实链路验证说明。

上游可能把 function_call 的 namespace 归一化回 collaboration。此时响应不含 collaboration-optimize，原逻辑整包早退，既不会补 encrypted_function_args，也不会有诊断。只要本次请求确实改写过，就继续检查三个协作工具的 function_call。同时收紧补全条件：arguments 必须是字符串、message 必须非空、密文启发式覆盖 JWE/enc_/长 base64url，并要求非 nil 的优化状态。补集成测试覆盖 marker 缺失和 collaboration namespace 两种情况。

Co-authored-by: Codex <codex@delicious233.com>

…sport Remove the unconnected child adapter; child normalization is provided by its gateway. Co-authored-by: Codex <codex@delicious233.com>

Co-authored-by: Codex <codex@delicious233.com>

DeliciousBuding · 2026-10-18T13:40:49Z

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Inline comments:
Review comments at @docs/CODEX_MULTI_AGENT_V2_COMPAT.md:
- Line 175: Remove the PR-specific sentence in the guide that tells readers to
force-add scripts/repro-codex-multi-agent-v2.py and claims new clones cannot
reproduce the steps. Keep the guide’s reproduction instructions intact.

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.env.example
README.md
README.zh-CN.md
docs/CODEX_MULTI_AGENT_V2_COMPAT.md
docs/CONFIGURATION.md
docs/DEPLOYMENT.md
proxy/codex_multi_agent_v2.go
proxy/codex_multi_agent_v2_integration_test.go
proxy/codex_multi_agent_v2_test.go
proxy/executor.go
proxy/handler.go
proxy/responses_ws.go
scripts/repro-codex-multi-agent-v2.py

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coderabbitai · 2026-10-18T13:47:57Z

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Co-authored-by: Codex <codex@delicious233.com>

DeliciousBuding · 2026-10-18T13:49:39Z

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DeliciousBuding · 2026-10-18T13:52:11Z

已转 Ready for review，并在 58f7926 删除评审指出的用户指南 PR 暂存说明。61ebfcb5 的父侧定向 Linux race 连续三轮、全仓 vet/build 通过；六片 CI race、前端和静态检查通过。普通 test job 因 Claude 用量测试的 TempDir 清理失败；本 PR 未改 admin 源码，该测试本地十轮通过。当前贡献者尝试 rerun 被 GitHub 拒绝（需仓库管理员权限），请维护者重跑失败检查。

DeliciousBuding and others added 6 commits October 18, 2026 15:10

fix(proxy): 补齐 tool_choice 回显与扁平双下划线还原

f8dd147

- 请求侧支持 collaboration__<tool> 扁平形式 - allowed_tools 的 tool_choice 同步改写 - 响应侧还原 tool_choice 回显，包括 allowed_tools

docs: record completed multi-agent integration checks

099f83b

Co-authored-by: Codex <codex@delicious233.com>

refactor(proxy): keep multi-agent compatibility scoped to parent tran…

4e0aa4d

…sport Remove the unconnected child adapter; child normalization is provided by its gateway. Co-authored-by: Codex <codex@delicious233.com>

test(proxy): remove unused child-adapter test import

61ebfcb

Co-authored-by: Codex <codex@delicious233.com>

DeliciousBuding marked this pull request as ready for review October 18, 2026 13:40

coderabbitai Bot reviewed Oct 18, 2026

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Comment thread docs/CODEX_MULTI_AGENT_V2_COMPAT.md Outdated

docs: keep reproduction guide independent of PR staging

58f7926

Co-authored-by: Codex <codex@delicious233.com>

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