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fix(cloudflare-ai): flatten content-part arrays to string to avoid oneOf 400 (#1926)

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Workers AI rejects OpenAI content-part array shape; flatten text parts
to a plain string per message before sending.

Co-authored-by: Cursor <cursoragent@cursor.com>
This commit is contained in:
decolua
2026-06-21 16:46:21 +07:00
parent 45240c19e5
commit 7baf293ccb
1 changed files with 12 additions and 0 deletions
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12
open-sse/translator/concerns/paramSupport.js
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@@ -10,6 +10,8 @@ const STRIP_RULES = [
{ provider: "github", match: /gpt-5\.4/i, drop: ["temperature"] }, { provider: "github", match: /gpt-5\.4/i, drop: ["temperature"] },
// GitHub Copilot Claude (except opus/sonnet 4.6): thinking + reasoning_effort rejected. #713 // GitHub Copilot Claude (except opus/sonnet 4.6): thinking + reasoning_effort rejected. #713
{ provider: "github", match: (m) => /claude/i.test(m) && !/claude.*(opus|sonnet).*4\.6/i.test(m), drop: ["thinking", "reasoning_effort"] }, { provider: "github", match: (m) => /claude/i.test(m) && !/claude.*(opus|sonnet).*4\.6/i.test(m), drop: ["thinking", "reasoning_effort"] },
// Cloudflare Workers AI: content must be plain string, rejects OpenAI content-part array (#1926)
{ provider: "cloudflare-ai", flattenContent: true },
]; ];
// Test a rule's match (regex or predicate) against the model id. // Test a rule's match (regex or predicate) against the model id.
@@ -26,6 +28,16 @@ export function stripUnsupportedParams(provider, model, body) {
for (const key of rule.drop) { for (const key of rule.drop) {
if (body[key] !== undefined) delete body[key]; if (body[key] !== undefined) delete body[key];
} }
// CF Workers AI oneOf root schema only accepts content as plain string (#1926)
if (rule.flattenContent && Array.isArray(body.messages)) {
for (const msg of body.messages) {
if (msg && Array.isArray(msg.content)) {
msg.content = msg.content
.map(b => (b?.type === "text" && typeof b.text === "string") ? b.text : "")
.join("");
}
}
}
} }
return body; return body;
} }