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fix: don't pass default response format in Responses (#3614)

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# What does this PR do?
Fireworks doesn't allow repsonse_format with tool use. The default
response format is 'text' anyway, so we can safely omit.


## Test Plan
Below script failed without the change, runs after.

```
#!/usr/bin/env python3
"""
Script to test Responses API with kubernetes-mcp-server.

This script:
1. Connects to the llama stack server
2. Uses the Responses API with MCP tools
3. Asks for the list of Kubernetes namespaces using the kubernetes-mcp-server
"""

import json

from openai import OpenAI

# Connect to the llama stack server
base_url = "http://localhost:8321/v1"
client = OpenAI(base_url=base_url, api_key="fake")

# Define the MCP tool pointing to the kubernetes-mcp-server
# The kubernetes-mcp-server is running on port 3000 with SSE endpoint at /sse
mcp_server_url = "http://localhost:3000/sse"

tools = [
    {
        "type": "mcp",
        "server_label": "k8s",
        "server_url": mcp_server_url,
    }
]

# Create a response request asking for k8s namespaces
print("Sending request to list Kubernetes namespaces...")
print(f"Using MCP server at: {mcp_server_url}")
print("Available tools will be listed automatically by the MCP server.")
print()

response = client.responses.create(
    # model="meta-llama/Llama-3.2-3B-Instruct",  # Using the vllm model
    model="fireworks/accounts/fireworks/models/llama4-scout-instruct-basic",
    # model="openai/gpt-4o",
    input="what are all the Kubernetes namespaces? Use tool call to `namespaces_list`. make sure to adhere to the tool calling format UNDER ALL CIRCUMSTANCES.",
    tools=tools,
    stream=False,
)

print("\n" + "=" * 80)
print("RESPONSE OUTPUT:")
print("=" * 80)

# Print the output
for i, output in enumerate(response.output):
    print(f"\n[Output {i + 1}] Type: {output.type}")
    if output.type == "mcp_list_tools":
        print(f"  Server: {output.server_label}")
        print(f"  Tools available: {[t.name for t in output.tools]}")
    elif output.type == "mcp_call":
        print(f"  Tool called: {output.name}")
        print(f"  Arguments: {output.arguments}")
        print(f"  Result: {output.output}")
        if output.error:
            print(f"  Error: {output.error}")
    elif output.type == "message":
        print(f"  Role: {output.role}")
        print(f"  Content: {output.content}")

print("\n" + "=" * 80)
print("FINAL RESPONSE TEXT:")
print("=" * 80)
print(response.output_text)
```
This commit is contained in:
ehhuang 2025-09-30 14:52:24 -07:00 • committed by GitHub
parent d350e3662b
commit ac7c35fbe6
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10 changed files with 7573 additions and 89 deletions
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144
tests/integration/recordings/responses/models-7d9446738fd7-d5d684a3.json
View file

@ -22,19 +22,6 @@
"supports_tools": false
}
},
{
"__type__": "openai.types.model.Model",
"__data__": {
"id": "accounts/tvergho-87e44d/models/debatecards-70b-ft-3epoch-dpo-v2",
"created": 1743381121,
"object": "model",
"owned_by": "tvergho-87e44d",
"kind": "HF_PEFT_ADDON",
"supports_chat": true,
"supports_image_input": false,
"supports_tools": false
}
},
{
"__type__": "openai.types.model.Model",
"__data__": {
@ -75,20 +62,6 @@
"context_length": 131072
}
},
{
"__type__": "openai.types.model.Model",
"__data__": {
"id": "accounts/fireworks/models/deepseek-v3",
"created": 1735576668,
"object": "model",
"owned_by": "fireworks",
"kind": "HF_BASE_MODEL",
"supports_chat": true,
"supports_image_input": false,
"supports_tools": true,
"context_length": 131072
}
},
{
"__type__": "openai.types.model.Model",
"__data__": {
@ -259,17 +232,45 @@
{
"__type__": "openai.types.model.Model",
"__data__": {
"id": "accounts/fireworks/models/qwen3-coder-30b-a3b-instruct",
"created": 1754063588,
"id": "accounts/fireworks/models/kimi-k2-instruct-0905",
"created": 1757018994,
"object": "model",
"owned_by": "fireworks",
"kind": "HF_BASE_MODEL",
"supports_chat": true,
"supports_image_input": false,
"supports_tools": false,
"supports_tools": true,
"context_length": 262144
}
},
{
"__type__": "openai.types.model.Model",
"__data__": {
"id": "accounts/fireworks/models/glm-4p5",
"created": 1753809636,
"object": "model",
"owned_by": "fireworks",
"kind": "HF_BASE_MODEL",
"supports_chat": true,
"supports_image_input": false,
"supports_tools": true,
"context_length": 131072
}
},
{
"__type__": "openai.types.model.Model",
"__data__": {
"id": "accounts/fireworks/models/deepseek-v3",
"created": 1735576668,
"object": "model",
"owned_by": "fireworks",
"kind": "HF_BASE_MODEL",
"supports_chat": true,
"supports_image_input": false,
"supports_tools": true,
"context_length": 131072
}
},
{
"__type__": "openai.types.model.Model",
"__data__": {
@ -284,20 +285,6 @@
"context_length": 131072
}
},
{
"__type__": "openai.types.model.Model",
"__data__": {
"id": "accounts/fireworks/models/qwen2p5-vl-32b-instruct",
"created": 1743392739,
"object": "model",
"owned_by": "fireworks",
"kind": "HF_BASE_MODEL",
"supports_chat": true,
"supports_image_input": true,
"supports_tools": false,
"context_length": 128000
}
},
{
"__type__": "openai.types.model.Model",
"__data__": {
@ -395,34 +382,6 @@
"supports_tools": false
}
},
{
"__type__": "openai.types.model.Model",
"__data__": {
"id": "accounts/fireworks/models/glm-4p5",
"created": 1753809636,
"object": "model",
"owned_by": "fireworks",
"kind": "HF_BASE_MODEL",
"supports_chat": true,
"supports_image_input": false,
"supports_tools": true,
"context_length": 131072
}
},
{
"__type__": "openai.types.model.Model",
"__data__": {
"id": "accounts/fireworks/models/kimi-k2-instruct-0905",
"created": 1757018994,
"object": "model",
"owned_by": "fireworks",
"kind": "HF_BASE_MODEL",
"supports_chat": true,
"supports_image_input": false,
"supports_tools": true,
"context_length": 262144
}
},
{
"__type__": "openai.types.model.Model",
"__data__": {
@ -520,6 +479,47 @@
"supports_tools": false,
"context_length": 262144
}
},
{
"__type__": "openai.types.model.Model",
"__data__": {
"id": "accounts/fireworks/models/qwen2p5-vl-32b-instruct",
"created": 1743392739,
"object": "model",
"owned_by": "fireworks",
"kind": "HF_BASE_MODEL",
"supports_chat": true,
"supports_image_input": true,
"supports_tools": false,
"context_length": 128000
}
},
{
"__type__": "openai.types.model.Model",
"__data__": {
"id": "accounts/fireworks/models/qwen3-coder-30b-a3b-instruct",
"created": 1754063588,
"object": "model",
"owned_by": "fireworks",
"kind": "HF_BASE_MODEL",
"supports_chat": true,
"supports_image_input": false,
"supports_tools": false,
"context_length": 262144
}
},
{
"__type__": "openai.types.model.Model",
"__data__": {
"id": "accounts/tvergho-87e44d/models/debatecards-70b-ft-3epoch-dpo-v2",
"created": 1743381121,
"object": "model",
"owned_by": "tvergho-87e44d",
"kind": "HF_PEFT_ADDON",
"supports_chat": true,
"supports_image_input": false,
"supports_tools": false
}
}
],
"is_streaming": false