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fix(deepseek-web): parse DeepSeek V4 native DSML markup and bare parameter tool calls #13930

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Merged
diegosouzapw merged 7 commits into from
Sep 29, 2026
Merged

fix(deepseek-web): parse DeepSeek V4 native DSML markup and bare parameter tool calls #13930

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6c3140d
fix(deepseek-web): parse DeepSeek V4 native DSML markup and bare para…
EkoSaputro14 Sep 17, 2026
8647b38
refactor(deepseek-web): address Copilot review comments on envelope, …
EkoSaputro14 Sep 17, 2026
6910975
test(deepseek-web): add unit tests for DeepSeek V4 DSML, bare paramet…
EkoSaputro14 Sep 17, 2026
333bc54
fix(deepseek-web): clean dangling parameter metadata tags from conten…
EkoSaputro14 Sep 17, 2026
3ac8c9f
test(deepseek-web): add regression test for trailing parameter metada…
EkoSaputro14 Sep 17, 2026
5d1fe9c
Merge remote-tracking branch 'origin/release/v3.8.51' into HEAD
diegosouzapw Sep 24, 2026
1debeec
fix(deepseek-web): keep </arguments> closing tag when stripping hallu…
EkoSaputro14 Sep 24, 2026
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14 changes: 14 additions & 0 deletions open-sse/translator/deepseekWebTools.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -441,6 +441,20 @@ export function parseDeepSeekToolCalls(
return { content: text ?? "", toolCalls: null };
}

// Normalize DeepSeek V4 DSML markup (<｜｜DSML｜｜ ...>) into canonical tool tags
text = text
.replace(/This response is AI-generated, for reference only\./g, "")
.replace(/<\/?(?:[｜|]{1,2})DSML(?:[｜|]{1,2})\s*(?:calls|tool_calls)>/gi, "")
.replace(/<(\/?)(?:(?:[｜|]{1,2})DSML(?:[｜|]{1,2})\s*)?invoke\b/gi, "<$1tool")
.replace(/<(\/?)(?:(?:[｜|]{1,2})DSML(?:[｜|]{1,2})\s*)?parameter\b/gi, "<$1parameter")
.replace(/(}\s*)<\/(?:parameter|invoke|arguments|calls|tool_calls)>/gi, "$1")
.trim();

// If model emitted bare <parameter> tags without enclosing <tool> or <invoke>
if (/<parameter\b/i.test(text) && !/<tool\b/i.test(text)) {
text = text.replace(/((?:<parameter\b[\s\S]*?<\/parameter>\s*)+)/gi, "<tool>$1</tool>");
}

const tokens = tokenizeToolTags(text);
if (tokens.length === 0) {
// No DeepSeek-specific tags — defer to the proven canonical parser (bare JSON, etc.).
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