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fix(responses): strip web_search fields for Muse Spark Contributor Free tiers #3906

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fix(responses): strip web_search fields for Muse Spark Contributor Free tiers #3906

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2 changes: 2 additions & 0 deletions src/adapters/openai-responses.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -2124,7 +2124,9 @@ export function stripOpenAiOnlyWebSearchFields(body: unknown): unknown {
*/
const MUSE_SPARK_WEB_SEARCH_STRICT_MODELS = new Set([
"muse-spark-1.3-contributor",
"muse-spark-1.3-contributor-free",
"muse-spark-1.2-contributor",
"muse-spark-1.2-contributor-free",
]);

const MUSE_SPARK_WEB_SEARCH_STRICT_RESPONSE_URLS = new Set([
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16 changes: 16 additions & 0 deletions tests/providers/muse-spark-web-search-compat.test.ts
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Expand Up @@ -158,6 +158,22 @@ describe("#2617/#3378 Muse Spark web_search compatibility", () => {
expect(Object.hasOwn(nested, "indexed_web_access")).toBe(false);
});

/**
* The Contributor Free tiers ride the same Zen Responses wire with the same
* gateway contract, so a Codex `web_search` + refused-field body 400s for them
* exactly like the paid tiers.
*/
test("Contributor Free tiers get the same web_search sanitization", () => {
for (const modelId of ["muse-spark-1.2-contributor-free", "muse-spark-1.3-contributor-free"]) {
const body = build(modelId, { tools: [webSearchTool()] });
const tool = toolsOf(body)[0]!;
expect(tool.type).toBe("web_search");
expect(tool.search_context_size).toBe("medium");
expect(Object.hasOwn(tool, "search_content_types")).toBe(false);
expect(Object.hasOwn(tool, "indexed_web_access")).toBe(false);
}
});

test("OpenCode Go applies the same Muse compatibility guard", () => {
const body = buildForProvider(ZEN_GO_PROVIDER, "muse-spark-1.3-contributor", {
tools: [webSearchTool()],
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