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support chat completions json_object with tool call #201

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support chat completions json_object with tool call #201

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32 changes: 28 additions & 4 deletions packages/proxy/src/proxy.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -1713,6 +1713,7 @@ async function fetchOpenAI(
delete bodyData.response_format;
break;
case "json_schema":
case "json_object":
if (
bodyData.model.startsWith("gpt") ||
bodyData.model.startsWith("o1") ||
Expand All @@ -1734,8 +1735,20 @@ async function fetchOpenAI(
function: {
name: "json",
description: "Output the result in JSON format",
parameters: responseFormatParsed.data.json_schema.schema,
strict: responseFormatParsed.data.json_schema.strict,
parameters:
responseFormatParsed.data.type === "json_schema"
? responseFormatParsed.data.json_schema.schema
: {
type: "object",
description:
"A flexible schema that accepts any JSON object.",
properties: {},
additionalProperties: true,
},
strict:
responseFormatParsed.data.type === "json_schema"
? responseFormatParsed.data.json_schema.strict
: false,
},
},
];
Expand Down Expand Up @@ -2113,7 +2126,10 @@ async function fetchAnthropicChatCompletions({

let isStructuredOutput = false;
const parsed = responseFormatSchema.safeParse(oaiParams.response_format);
if (parsed.success && parsed.data.type === "json_schema") {
if (
parsed.success &&
(parsed.data.type === "json_schema" || parsed.data.type === "json_object")
) {
isStructuredOutput = true;
if (params.tools || params.tool_choice) {
throw new ProxyBadRequestError(
Expand All @@ -2124,7 +2140,15 @@ async function fetchAnthropicChatCompletions({
{
name: "json",
description: "Output the result in JSON format",
input_schema: parsed.data.json_schema.schema,
input_schema:
parsed.data.type === "json_schema"
? parsed.data.json_schema.schema
: {
type: "object",
description: "A flexible schema that accepts any JSON object.",
properties: {},
additionalProperties: true,
},
},
];
params.tool_choice = { type: "tool", name: "json" };
Expand Down