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fix provider thinking compatibility

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- claude: handle DeepSeek thinking blocks defensively, unsigned placeholder; fix kept-vs-seen thinking detection
- gemini: clamp unsupported max/xhigh thinking levels to high
- testUtils: probe Cloud Code Assist for gemini-cli/antigravity with 401 refresh retry
- tests: add translator regression coverage

Co-authored-by: Cursor <cursoragent@cursor.com>
This commit is contained in:
Mink Nguyen
2026-06-26 10:12:48 +07:00
committed by decolua
co-authored by Cursor
parent cb65a45e1f
commit c4f80d30d8
5 changed files with 140 additions and 17 deletions
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open-sse/translator/formats/claude.js
+34 -12
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@@ -84,6 +84,25 @@ export function fixToolUseOrdering(messages) {
// Models that reject thinking.type "adaptive" + output_config.effort (Opus 4.5+/Sonnet 4.6+ only)
const ADAPTIVE_THINKING_UNSUPPORTED = /haiku/i;
function handlesThinkingBlocks(provider) {
return provider === "claude" || provider?.startsWith("anthropic-compatible") || provider === "deepseek";
}
function buildThinkingPlaceholder(provider) {
const block = {
type: CLAUDE_BLOCK.THINKING,
thinking: ".",
};
// DeepSeek's Anthropic-compatible endpoint requires a thinking block in
// thinking mode, but it does not need Anthropic's signed-thinking fallback.
if (provider !== "deepseek") {
block.signature = DEFAULT_THINKING_CLAUDE_SIGNATURE;
}
return block;
}
// Normalize a native Claude passthrough body to match Anthropic Messages API spec.
// Newer Cowork/Claude Code clients emit beta-only shapes that OAuth endpoints reject:
// 1. thinking.type "adaptive" → unsupported on Haiku
@@ -216,23 +235,31 @@ export function prepareClaudeRequest(body, provider = null, apiKey = null, conne
lastAssistantProcessed = true;
}
// Handle thinking blocks for Anthropic endpoint only
if (provider === "claude" || provider?.startsWith("anthropic-compatible")) {
// Handle thinking blocks for Anthropic-compatible endpoints.
if (handlesThinkingBlocks(provider)) {
let hasToolUse = false;
let hasThinking = false;
let hasKeptThinking = false;
// Claude native: preserve valid signatures, drop invalid blocks.
// anthropic-compatible: replace with default (safe fallback for lenient upstreams).
// DeepSeek: keep existing thinking as-is; add an unsigned placeholder only if missing.
const isClaudeNative = provider === "claude";
const isDeepSeek = provider === "deepseek";
const kept = [];
for (const block of msg.content) {
const isThinking = block.type === CLAUDE_BLOCK.THINKING || block.type === CLAUDE_BLOCK.REDACTED_THINKING;
if (isThinking) {
hasThinking = true;
if (isClaudeNative) {
if (isValidClaudeSignature(block.signature)) kept.push(block);
if (isValidClaudeSignature(block.signature)) {
hasKeptThinking = true;
kept.push(block);
}
} else if (isDeepSeek) {
hasKeptThinking = true;
kept.push(block);
} else {
block.signature = DEFAULT_THINKING_CLAUDE_SIGNATURE;
hasKeptThinking = true;
kept.push(block);
}
continue;
@@ -243,12 +270,8 @@ export function prepareClaudeRequest(body, provider = null, apiKey = null, conne
msg.content = kept;
// Add thinking block if thinking enabled + has tool_use but no thinking
if (thinkingEnabled && !hasThinking && hasToolUse) {
msg.content.unshift({
type: CLAUDE_BLOCK.THINKING,
thinking: ".",
signature: DEFAULT_THINKING_CLAUDE_SIGNATURE
});
if (thinkingEnabled && !hasKeptThinking && hasToolUse) {
msg.content.unshift(buildThinkingPlaceholder(provider));
}
}
}
@@ -299,4 +322,3 @@ export function prepareClaudeRequest(body, provider = null, apiKey = null, conne
return body;
}