ch40_capstone

scenario a_small_order_streams_straight_through_no_pause

scenario a_small_order_streams_straight_through_no_pause · 9.8ms

sse_frame_sent {"event": "run_started"}

order 1 · 5.4ms

sse_frame_sent {"event": "checking_items", "count": 1}

branch widget · thread=asyncio_0 · 1.1ms

turn 1 · thread=asyncio_0 · 1.1ms · asked for: check_stock

model mock · thread=asyncio_0 · 0.9ms · asked for: check_stock

context sent — 1 message(s)

	role	content
[0]	human	Check stock for 3x widget.

declared tools (1)

tool	description	schema
check_stock	Check stock and price for a quantity of a sku.	{"description": "Check stock and price for a quantity of a sku.", "properties": {"sku": {"title": "Sku", "type": "string"}, "quantity": {"title": "Quantity", "type": "integer"}}, "required": ["sku", "quantity"], "title": "check_stock", "type": "object"}

tools declared to the mock model {"names": ["check_stock"], "consulted": false}

context ignored by the mock model {"messages": 1, "roles": ["human"]}

	role	content
[0]	ai	check_stock({"sku": "widget", "quantity": 3})

tool check_stock · thread=asyncio_0 · 0.2ms · given: sku=widget, quantity=3 · returned: widget: 3 in stock at $10.00 each

args {"sku": "widget", "quantity": 3}

hook {"when": "pre", "by": "note_the_dispatch", "note": "dispatching check_stock for widget", "veto": null, "replacement": null}

dispatched {"value": "widget: 3 in stock at $10.00 each"}

result {"value": "widget: 3 in stock at $10.00 each"}

pricing 1.0ms

sse_frame_sent {"event": "pricing_started"}

subgraph_result {"subtotal": 30.0, "total": 30.0}

sse_frame_sent {"event": "order_placed", "total": 30.0}

sse_frame_sent {"event": "run_ended", "approved": true}

the_small_order_never_paused {"events": ["run_started", "checking_items", "pricing_started", "order_placed", "run_ended"], "total": 30.0, "approved_without_a_gate": true, "callback_events": ["model_start", "model_end"]}

scenario a_small_order_streams_straight_through_no_pause · 1477.1ms

sse_frame_sent {"event": "run_started"}

order 1 · 1472.3ms

sse_frame_sent {"event": "checking_items", "count": 1}

branch widget · thread=asyncio_0 · 1466.8ms

turn 1 · thread=asyncio_0 · 1466.8ms · 314 in / 81 out · asked for: check_stock

model live · thread=asyncio_0 · 1466.0ms (model provider 1247.7 · library 218.3) · 314 in / 81 out · asked for: check_stock

context sent — 1 message(s)

	role	content
[0]	human	Check stock for 3x widget.

declared tools (1)

tool	description	schema
check_stock	Check stock and price for a quantity of a sku.	{"description": "Check stock and price for a quantity of a sku.", "properties": {"sku": {"title": "Sku", "type": "string"}, "quantity": {"title": "Quantity", "type": "integer"}}, "required": ["sku", "quantity"], "title": "check_stock", "type": "object"}

wire request

attempt

method

POST

url

https://api.deepseek.com/v1/chat/completions

defaulted (6)

temperature, max_tokens, top_p, stop, seed, tool_choice

headers (18)

show

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{
  "messages": [
    {
      "content": "Check stock for 3x widget.",
      "role": "user"
    }
  ],
  "model": "deepseek-flash",
  "stream": false,
  "tools": [
    {
      "type": "function",
      "function": {
        "name": "check_stock",
        "description": "Check stock and price for a quantity of a sku.",
        "parameters": {
          "properties": {
            "sku": {
              "type": "string"
            },
            "quantity": {
              "type": "integer"
            }
          },
          "required": [
            "sku",
            "quantity"
          ],
          "type": "object"
        }
      }
    }
  ]
}

wire response

status

200

headers (15)

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  "created": 1789336771,
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      "message": {
        "role": "assistant",
        "content": "",
        "reasoning_content": "The user wants to check stock for 3x widget. The sku is probably \"widget\". Let me call the tool.",
        "tool_calls": [
          {
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	role	content
[0]	ai	check_stock({"sku": "widget", "quantity": 3})

tool check_stock · thread=asyncio_0 · 0.7ms · given: sku=widget, quantity=3 · returned: widget: 3 in stock at $10.00 each

args {"sku": "widget", "quantity": 3}

hook {"when": "pre", "by": "note_the_dispatch", "note": "dispatching check_stock for widget", "veto": null, "replacement": null}

dispatched {"value": "widget: 3 in stock at $10.00 each"}

result {"value": "widget: 3 in stock at $10.00 each"}

pricing 1.4ms

sse_frame_sent {"event": "pricing_started"}

subgraph_result {"subtotal": 30.0, "total": 30.0}

sse_frame_sent {"event": "order_placed", "total": 30.0}

sse_frame_sent {"event": "run_ended", "approved": true}

scenario a_large_order_pauses_for_approval_then_resumes_from_checkpoint

scenario a_large_order_pauses_for_approval_then_resumes_from_checkpoint · 8.7ms

sse_frame_sent {"event": "run_started"}

order 1 · 4.0ms

sse_frame_sent {"event": "checking_items", "count": 1}

branch widget · thread=asyncio_0 · 0.5ms

turn 1 · thread=asyncio_0 · 0.5ms · asked for: check_stock

model mock · thread=asyncio_0 · 0.3ms · asked for: check_stock

context sent — 1 message(s)

	role	content
[0]	human	Check stock for 20x widget.

declared tools (1)

tool	description	schema
check_stock	Check stock and price for a quantity of a sku.	{"description": "Check stock and price for a quantity of a sku.", "properties": {"sku": {"title": "Sku", "type": "string"}, "quantity": {"title": "Quantity", "type": "integer"}}, "required": ["sku", "quantity"], "title": "check_stock", "type": "object"}

tools declared to the mock model {"names": ["check_stock"], "consulted": false}

context ignored by the mock model {"messages": 1, "roles": ["human"]}

	role	content
[0]	ai	check_stock({"sku": "widget", "quantity": 20})

tool check_stock · thread=asyncio_0 · 0.2ms · given: sku=widget, quantity=20 · returned: widget: 20 in stock at $10.00 each

args {"sku": "widget", "quantity": 20}

hook {"when": "pre", "by": "note_the_dispatch", "note": "dispatching check_stock for widget", "veto": null, "replacement": null}

dispatched {"value": "widget: 20 in stock at $10.00 each"}

result {"value": "widget: 20 in stock at $10.00 each"}

pricing 1.1ms

sse_frame_sent {"event": "pricing_started"}

subgraph_result {"subtotal": 200.0, "total": 180.0}

sse_frame_sent {"event": "awaiting_approval", "total": 180.0}

sse_frame_sent {"event": "resuming", "decision": true}

sse_frame_sent {"event": "order_placed"}

sse_frame_sent {"event": "run_ended", "approved": true}

the_pause_and_resume_were_two_separate_requests {"events": ["run_started", "checking_items", "pricing_started", "awaiting_approval", "resuming", "order_placed", "run_ended"], "paused_before_resuming": true, "approved_after_resume": true, "total": 180.0}

scenario a_large_order_pauses_for_approval_then_resumes_from_checkpoint · 1600.1ms

sse_frame_sent {"event": "run_started"}

order 1 · 1593.2ms

sse_frame_sent {"event": "checking_items", "count": 1}

branch widget · thread=asyncio_0 · 1588.1ms

turn 1 · thread=asyncio_0 · 1588.1ms · 314 in / 164 out · asked for: check_stock

model live · thread=asyncio_0 · 1587.7ms (model provider 1581.5 · library 6.2) · 314 in / 164 out · asked for: check_stock

context sent — 1 message(s)

	role	content
[0]	human	Check stock for 20x widget.

declared tools (1)

tool	description	schema
check_stock	Check stock and price for a quantity of a sku.	{"description": "Check stock and price for a quantity of a sku.", "properties": {"sku": {"title": "Sku", "type": "string"}, "quantity": {"title": "Quantity", "type": "integer"}}, "required": ["sku", "quantity"], "title": "check_stock", "type": "object"}

wire request

attempt

method

POST

url

https://api.deepseek.com/v1/chat/completions

defaulted (6)

temperature, max_tokens, top_p, stop, seed, tool_choice

headers (18)

show

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    {
      "content": "Check stock for 20x widget.",
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  ],
  "model": "deepseek-flash",
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        "description": "Check stock and price for a quantity of a sku.",
        "parameters": {
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            "sku": {
              "type": "string"
            },
            "quantity": {
              "type": "integer"
            }
          },
          "required": [
            "sku",
            "quantity"
          ],
          "type": "object"
        }
      }
    }
  ]
}

wire response

status

200

headers (15)

show

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	role	content
[0]	ai	check_stock({"sku": "widget", "quantity": 20})

tool check_stock · thread=asyncio_0 · 0.4ms · given: sku=widget, quantity=20 · returned: widget: 20 in stock at $10.00 each

args {"sku": "widget", "quantity": 20}

hook {"when": "pre", "by": "note_the_dispatch", "note": "dispatching check_stock for widget", "veto": null, "replacement": null}

dispatched {"value": "widget: 20 in stock at $10.00 each"}

result {"value": "widget: 20 in stock at $10.00 each"}

pricing 1.6ms

sse_frame_sent {"event": "pricing_started"}

subgraph_result {"subtotal": 200.0, "total": 180.0}

sse_frame_sent {"event": "awaiting_approval", "total": 180.0}

sse_frame_sent {"event": "resuming", "decision": true}

sse_frame_sent {"event": "order_placed"}

sse_frame_sent {"event": "run_ended", "approved": true}

scenario the_real_callback_trace_agrees_with_our_own

scenario the_real_callback_trace_agrees_with_our_own · 7.4ms

sse_frame_sent {"event": "run_started"}

order 2 · 3.6ms

sse_frame_sent {"event": "checking_items", "count": 2}

branch gadget · thread=asyncio_1 · 0.5ms

turn 1 · thread=asyncio_1 · 0.4ms · asked for: check_stock

model mock · thread=asyncio_1 · 0.2ms · asked for: check_stock

context sent — 1 message(s)

	role	content
[0]	human	Check stock for 2x gadget.

declared tools (1)

tool	description	schema
check_stock	Check stock and price for a quantity of a sku.	{"description": "Check stock and price for a quantity of a sku.", "properties": {"sku": {"title": "Sku", "type": "string"}, "quantity": {"title": "Quantity", "type": "integer"}}, "required": ["sku", "quantity"], "title": "check_stock", "type": "object"}

tools declared to the mock model {"names": ["check_stock"], "consulted": false}

context ignored by the mock model {"messages": 1, "roles": ["human"]}

	role	content
[0]	ai	check_stock({"sku": "gadget", "quantity": 2})

tool check_stock · thread=asyncio_1 · 0.2ms · given: sku=gadget, quantity=2 · returned: gadget: 2 in stock at $10.00 each

args {"sku": "gadget", "quantity": 2}

hook {"when": "pre", "by": "note_the_dispatch", "note": "dispatching check_stock for gadget", "veto": null, "replacement": null}

dispatched {"value": "gadget: 2 in stock at $10.00 each"}

result {"value": "gadget: 2 in stock at $10.00 each"}

branch widget · thread=asyncio_0 · 0.3ms

turn 1 · thread=asyncio_0 · 0.3ms · asked for: check_stock

model mock · thread=asyncio_0 · 0.2ms · asked for: check_stock

context sent — 1 message(s)

	role	content
[0]	human	Check stock for 1x widget.

declared tools (1)

tool	description	schema
check_stock	Check stock and price for a quantity of a sku.	{"description": "Check stock and price for a quantity of a sku.", "properties": {"sku": {"title": "Sku", "type": "string"}, "quantity": {"title": "Quantity", "type": "integer"}}, "required": ["sku", "quantity"], "title": "check_stock", "type": "object"}

tools declared to the mock model {"names": ["check_stock"], "consulted": false}

context ignored by the mock model {"messages": 1, "roles": ["human"]}

	role	content
[0]	ai	check_stock({"sku": "widget", "quantity": 1})

tool check_stock · thread=asyncio_0 · 0.1ms · given: sku=widget, quantity=1 · returned: widget: 1 in stock at $10.00 each

args {"sku": "widget", "quantity": 1}

hook {"when": "pre", "by": "note_the_dispatch", "note": "dispatching check_stock for widget", "veto": null, "replacement": null}

dispatched {"value": "widget: 1 in stock at $10.00 each"}

result {"value": "widget: 1 in stock at $10.00 each"}

pricing 0.9ms

sse_frame_sent {"event": "pricing_started"}

subgraph_result {"subtotal": 30.0, "total": 30.0}

sse_frame_sent {"event": "order_placed", "total": 30.0}

sse_frame_sent {"event": "run_ended", "approved": true}

the_callback_sees_every_model_call_but_no_tool_call {"model_calls_the_callback_saw": 2, "model_calls_the_trace_saw": 2, "model_counts_agree": true, "tool_calls_the_trace_saw": 2, "tool_calls_the_callback_could_have_seen": 0}

scenario the_real_callback_trace_agrees_with_our_own · 1448.5ms

sse_frame_sent {"event": "run_started"}

order 2 · 1442.9ms

sse_frame_sent {"event": "checking_items", "count": 2}

branch widget · thread=asyncio_0 · 1436.1ms

turn 1 · thread=asyncio_0 · 1436.1ms · 314 in / 138 out · asked for: check_stock · responded with: I'll check that for you.

model live · thread=asyncio_0 · 1435.5ms (model provider 1428.5 · library 7.0) · 314 in / 138 out · asked for: check_stock · responded with: I'll check that for you.

context sent — 1 message(s)

	role	content
[0]	human	Check stock for 1x widget.

declared tools (1)

tool	description	schema
check_stock	Check stock and price for a quantity of a sku.	{"description": "Check stock and price for a quantity of a sku.", "properties": {"sku": {"title": "Sku", "type": "string"}, "quantity": {"title": "Quantity", "type": "integer"}}, "required": ["sku", "quantity"], "title": "check_stock", "type": "object"}

wire request

attempt

method

POST

url

https://api.deepseek.com/v1/chat/completions

defaulted (6)

temperature, max_tokens, top_p, stop, seed, tool_choice

headers (18)

show

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wire response

status

200

headers (15)

show

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      "message": {
        "role": "assistant",
        "content": "I'll check that for you.",
        "reasoning_content": "The user wants to check stock for 1x widget. I need a SKU. \"widget\" is ambiguous - is it a SKU? Let me just call with sku \"widget\".\n\nActually, I should consider whether I need to clarify. The tool requires a sku. The user said \"widget\" which could be the SKU literally. I'll call it.",
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	role	content
[0]	ai	I'll check that for you. check_stock({"sku": "widget", "quantity": 1})

tool check_stock · thread=asyncio_0 · 0.6ms · given: sku=widget, quantity=1 · returned: widget: 1 in stock at $10.00 each

args {"sku": "widget", "quantity": 1}

hook {"when": "pre", "by": "note_the_dispatch", "note": "dispatching check_stock for widget", "veto": null, "replacement": null}

dispatched {"value": "widget: 1 in stock at $10.00 each"}

result {"value": "widget: 1 in stock at $10.00 each"}

branch gadget · thread=asyncio_1 · 1093.9ms

turn 1 · thread=asyncio_1 · 1093.9ms · 314 in / 111 out · asked for: check_stock · responded with: I'll check that for you.

model live · thread=asyncio_1 · 1093.4ms (model provider 1085.3 · library 8.1) · 314 in / 111 out · asked for: check_stock · responded with: I'll check that for you.

context sent — 1 message(s)

	role	content
[0]	human	Check stock for 2x gadget.

declared tools (1)

tool	description	schema
check_stock	Check stock and price for a quantity of a sku.	{"description": "Check stock and price for a quantity of a sku.", "properties": {"sku": {"title": "Sku", "type": "string"}, "quantity": {"title": "Quantity", "type": "integer"}}, "required": ["sku", "quantity"], "title": "check_stock", "type": "object"}

wire request

attempt

method

POST

url

https://api.deepseek.com/v1/chat/completions

defaulted (6)

temperature, max_tokens, top_p, stop, seed, tool_choice

headers (18)

show

accept	application/json
accept-encoding	gzip, deflate, zstd
authorization	not recorded
connection	keep-alive
content-length	366
content-type	application/json
host	api.deepseek.com
user-agent	OpenAI/Python 3.6.0
x-stainless-arch	arm64
x-stainless-async	false
x-stainless-lang	python
x-stainless-os	MacOS
x-stainless-package-version	3.6.0
x-stainless-raw-response	true
x-stainless-read-timeout	60.0
x-stainless-retry-count	0
x-stainless-runtime	CPython
x-stainless-runtime-version	3.14.7

{
  "messages": [
    {
      "content": "Check stock for 2x gadget.",
      "role": "user"
    }
  ],
  "model": "deepseek-flash",
  "stream": false,
  "tools": [
    {
      "type": "function",
      "function": {
        "name": "check_stock",
        "description": "Check stock and price for a quantity of a sku.",
        "parameters": {
          "properties": {
            "sku": {
              "type": "string"
            },
            "quantity": {
              "type": "integer"
            }
          },
          "required": [
            "sku",
            "quantity"
          ],
          "type": "object"
        }
      }
    }
  ]
}

wire response

status

200

headers (15)

show

access-control-allow-credentials	true
connection	keep-alive
content-encoding	gzip
content-type	application/json
date	Sun, 13 Sep 2026 21:59:34 GMT
server	elb
strict-transport-security	max-age=31536000; includeSubDomains; preload
transfer-encoding	chunked
vary	origin, access-control-request-method, access-control-request-headers
via	1.1 64544648f8289d0bd61ef02997afb698.cloudfront.net (CloudFront)
x-amz-cf-id	Rvw5FfEEx5ckPfrK7687SVHnJwZPt7kHbvV1DJpi5KYizkt2pFOCEQ==
x-amz-cf-pop	DEN52-P3
x-cache	Miss from cloudfront
x-content-type-options	nosniff
x-ds-trace-id	988e96f8a2d6ab5d744a74b87d0f34de

{
  "id": "50b84e57-d8e0-4737-9a0b-f1d5e70fa99f",
  "object": "chat.completion",
  "created": 1789336774,
  "model": "deepseek-flash",
  "choices": [
    {
      "index": 0,
      "message": {
        "role": "assistant",
        "content": "I'll check that for you.",
        "reasoning_content": "The user wants to check stock for 2x gadget. I need a SKU. \"gadget\" might be the SKU. Let me call check_stock with sku \"gadget\" and quantity 2.",
        "tool_calls": [
          {
            "index": 0,
            "id": "call_00_mWHA7LKv0xPiZnrsgR5i2891",
            "type": "function",
            "function": {
              "name": "check_stock",
              "arguments": "{\"sku\": \"gadget\", \"quantity\": 2}"
            }
          }
        ]
      },
      "logprobs": null,
      "finish_reason": "tool_calls"
    }
  ],
  "usage": {
    "prompt_tokens": 314,
    "completion_tokens": 111,
    "total_tokens": 425,
    "prompt_tokens_details": {
      "cached_tokens": 128
    },
    "completion_tokens_details": {
      "reasoning_tokens": 48
    },
    "prompt_cache_hit_tokens": 128,
    "prompt_cache_miss_tokens": 186
  },
  "system_fingerprint": "aeb56401ca74e127821c4f9126dcb669"
}

	role	content
[0]	ai	I'll check that for you. check_stock({"sku": "gadget", "quantity": 2})

tool check_stock · thread=asyncio_1 · 0.5ms · given: sku=gadget, quantity=2 · returned: gadget: 2 in stock at $10.00 each

args {"sku": "gadget", "quantity": 2}

hook {"when": "pre", "by": "note_the_dispatch", "note": "dispatching check_stock for gadget", "veto": null, "replacement": null}

dispatched {"value": "gadget: 2 in stock at $10.00 each"}

result {"value": "gadget: 2 in stock at $10.00 each"}

pricing 2.1ms

sse_frame_sent {"event": "pricing_started"}

subgraph_result {"subtotal": 30.0, "total": 30.0}

sse_frame_sent {"event": "order_placed", "total": 30.0}

sse_frame_sent {"event": "run_ended", "approved": true}