- Add 60 requests/minute rate limiting per credential using sliding window
- Detect insufficient_quota errors and set cooldown until next day (Beijing time)
- Map quota errors (HTTP 403/429) to 429 with retryAfter for conductor integration
- Cache Beijing timezone at package level to avoid repeated syscalls
- Add redactAuthID function to protect credentials in logs
- Extract wrapQwenError helper to consolidate error handling
Default to generating a fresh random user_id per request instead of
reusing cached IDs. Add cache-user-id config option to opt in to the
previous caching behavior.
- Add CacheUserID field to CloakConfig
- Extract user_id cache logic to dedicated file
- Generate fresh user_id by default, cache only when enabled
- Add tests for both paths
- Updated `ExecuteStream` functions in executors to use `StreamResult` instead of channels.
- Enhanced upstream header handling in OpenAI handlers.
- Improved maintainability and alignment across executors and handlers.
- Introduced unit tests for request logging middleware to enhance coverage.
- Added WebSocket-based Codex executor to support Responses API upgrade.
- Updated middleware logic to selectively capture request bodies for memory efficiency.
- Enhanced Codex configuration handling with new WebSocket attributes.
Update hardcoded X-Stainless-* and User-Agent defaults to match
Claude Code 2.1.44 / @anthropic-ai/sdk 0.74.0 (verified via
diagnostic proxy capture 2026-02-17).
Changes:
- X-Stainless-Os/Arch: dynamic via runtime.GOOS/GOARCH
- X-Stainless-Package-Version: 0.55.1 → 0.74.0
- X-Stainless-Timeout: 60 → 600
- User-Agent: claude-cli/1.0.83 (external, cli) → claude-cli/2.1.44 (external, sdk-cli)
Add claude-header-defaults config section so values can be updated
without recompilation when Claude Code releases new versions.
Allow disabling the proxy_ tool name prefix on a per-account basis.
Users who route their own Anthropic account through CPA can set
"tool_prefix_disabled": true in their OAuth auth JSON to send tool
names unchanged to Anthropic.
Default behavior is fully preserved — prefix is applied unless
explicitly disabled.
Changes:
- Add ToolPrefixDisabled() accessor to Auth (reads metadata key
"tool_prefix_disabled" or "tool-prefix-disabled")
- Gate all 6 prefix apply/strip points with the new flag
- Add unit tests for the accessor
The proxy_ prefix logic correctly skips built-in tools (those with a
non-empty "type" field) in tools[] definitions but does not skip them
in messages[].content[] tool_use blocks or tool_choice. This causes
web_search in conversation history to become proxy_web_search, which
Anthropic does not recognize.
Fix: collect built-in tool names from tools[] into a set and also
maintain a hardcoded fallback set (web_search, code_execution,
text_editor, computer) for cases where the built-in tool appears in
history but not in the current request's tools[] array. Skip prefixing
in messages and tool_choice when name matches a built-in.
- Fix X-Initiator detection: check for any assistant/tool role
in messages instead of only the last message role, matching
the correct agent detection for multi-turn tool conversations
- Add x-github-api-version: 2025-04-01 header for API compatibility
- Support Business/Enterprise accounts by using Endpoints.API from
the Copilot token response instead of hardcoded base URL
- Fix Responses API vision detection: detect vision content before
input normalization removes the messages array
- Add 8 test cases covering the above fixes
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Change Openai-Intent header from "conversation-edits" to
"conversation-panel" to avoid triggering GitHub's premium
execution path, which caused included models (0x multiplier)
to be billed as premium requests.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Collect built-in tool names (those with a "type" field like
web_search, code_execution) and skip prefixing tool_reference
blocks that reference them, preventing name mismatch.
- Refactor if-else if chains to switch statements in all three
prefix functions for idiomatic Go style.
tool_reference blocks can appear nested inside tool_result.content[]
arrays, not just at the top level of messages[].content[]. The prefix
logic now iterates into tool_result blocks with array content to find
and prefix/strip nested tool_reference.tool_name fields.
applyClaudeToolPrefix, stripClaudeToolPrefixFromResponse, and
stripClaudeToolPrefixFromStreamLine now handle "tool_reference" blocks
(field "tool_name") in addition to "tool_use" blocks (field "name").
Without this fix, tool_reference blocks in conversation history retain
their original unprefixed names while tool definitions carry the proxy_
prefix, causing Anthropic API 400 errors: "Tool reference 'X' not found
in available tools."
Co-authored-by: Kirill Turanskiy <kt@novamedia.ru>
- Add response.function_call_arguments.delta handler for tool call parameters
- Rewrite normalizeGitHubCopilotResponsesInput to produce structured input
array (message/function_call/function_call_output) instead of flattened
text, fixing infinite loop in multi-turn tool-use conversations
- Skip flattenAssistantContent for messages containing tool_use blocks,
preventing function_call items from being destroyed
- Add reasoning/thinking stream & non-stream support
- Fix stop_reason mapping (max_tokens/stop) and cached token reporting
- Update test to match new array-based input format
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
The normalizeGitHubCopilotResponsesTools filter required type="function",
which dropped Claude-format tools (no type field, uses input_schema).
Relax the filter to accept tools without a type field and map input_schema
to parameters so tools are correctly sent to the upstream API.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Change GenerateSearchIndicatorEvents to return [][]byte instead of []sseEvent
for consistency with BuildFallbackTextEvents and other event building functions.
Benefits:
- Consistent API across all event generation functions
- Eliminates intermediate sseEvent type conversion in caller
- Simplifies usage by returning ready-to-send SSE byte slices
This addresses the code quality feedback from PR #226 review.
