Is there a bug: Baml v220 failed to parse response
# helps
sekai.ni.itamio
04/13/2026, 4:21 AMEven though the raw LLM response appears valid and follows the required schema, the parser returns an incorrect result.
Parsed response
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{
"selected_tool": {
"name": "reply_to_user",
"arguments": {
"role": "assistant",
"content": "string" // expected full extracted content "Jakob :four_leaf_clover:..."
}
}
} Copy code
... (reasoning omitted)
Final check of the schema requirement: "Answer in JSON-like string (no double quotes in keys) using this schema."
Okay, I will construct the JSON object.
Content string:
Jakob :four_leaf_clover: \u0000
@jcsrb
Cứ 6 giờ debug sẽ giúp cho
bạn tiết kiệm được 5 phút đọc
document
@vuicoding
I'll put this into the `content` field.
</think>
{
selected_tool: {
name: "reply_to_user",
arguments: {
role: "assistant",
content: "Jakob :four_leaf_clover: \\u0000\n@jcsrb\nCứ 6 giờ debug sẽ giúp cho\nbạn tiết kiệm được 5 phút đọc\ndocument\n@vuicoding"
}
}
}sekai.ni.itamio
04/13/2026, 4:23 AMSystem prompt
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You are a helpful assistant that provides information about images.
Answer in JSON-like string (no double quotes in keys) using this schema. Call a tool only when explicitly needed for the task; otherwise, respond with text-only output:
{
selected_tool: {
// Use this tool when you want to send a natural language response shown to the user.
name: "reply_to_user",
arguments: {
role: "assistant",
content: string,
},
},
} Copy code
Extract all text from the image without any description.
Image:
[base64 image]v
Vaibhav (BAML 🐑)
04/13/2026, 8:34 PMthanks for sharing this!
Vaibhav (BAML 🐑)
04/13/2026, 8:34 PMI suspect i can predict why this happenned
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