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fix(proxy): handle 404 with model-not-found guidance #1748

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Merged
chrarnoldus merged 7 commits into from
Mar 31, 2026
Merged

fix(proxy): handle 404 with model-not-found guidance #1748

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45670ac
fix(proxy): handle BYOK 404 with model-not-found guidance
kilo-code-bot[bot] Mar 30, 2026
3f362d3
fix: move 404 model-not-found handler outside BYOK block
kilo-code-bot[bot] Mar 30, 2026
387addc
fix: recommend kilo-auto/free when user balance is zero
kilo-code-bot[bot] Mar 30, 2026
20c525f
fix: add BYOK-specific 404 message without auto model recommendation
kilo-code-bot[bot] Mar 30, 2026
4ec62e9
fix: drop kilocode/ prefix from non-claw 404 recommendation
kilo-code-bot[bot] Mar 30, 2026
3447f7e
fix: remove BYOK 404 entry from byokErrorMessages
kilo-code-bot[bot] Mar 30, 2026
3fee831
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chrarnoldus Mar 31, 2026
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2 changes: 2 additions & 0 deletions src/app/api/openrouter/[...path]/route.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -592,6 +592,8 @@ export async function POST(request: NextRequest): Promise<NextResponseType<unkno
request: requestBodyParsed,
response,
isUserByok: !!userByok,
feature,
balance: (await balanceAndSettingsPromise).balance,
});
if (errorResponse) {
return errorResponse;
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15 changes: 15 additions & 0 deletions src/lib/llm-proxy-helpers.ts
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Expand Up @@ -142,11 +142,15 @@ export async function makeErrorReadable({
request,
response,
isUserByok,
feature,
balance,
}: {
requestedModel: string;
request: GatewayRequest;
response: Response;
isUserByok: boolean;
feature: FeatureValue | null;
balance: number;
}) {
if (response.status < 400) {
return undefined;
Expand All @@ -161,6 +165,17 @@ export async function makeErrorReadable({
{ status: response.status }
);
}

}

if (response.status === 404) {
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const recommendedModel = balance <= 0 ? KILO_AUTO_FREE_MODEL : KILO_AUTO_BALANCED_MODEL;
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const recommendation =
feature === 'kiloclaw' || feature === 'openclaw'
? `The model "${requestedModel}" does not exist or is no longer available. We recommend switching to ${recommendedModel.name}: /model kilocode/${recommendedModel.id}`
: `The model "${requestedModel}" does not exist or is no longer available. We recommend switching to ${recommendedModel.id}.`;
warnExceptInTest(`Responding with 404 ${recommendation}`);
return NextResponse.json({ error: recommendation, message: recommendation }, { status: 404 });
}

// Sometimes we get generic or nonsensical errors when the context length is exceeded
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