1---
2version: 2
3interactions:
4- id: 0
5 request:
6 proto: HTTP/1.1
7 proto_major: 1
8 proto_minor: 1
9 content_length: 886
10 host: ""
11 body: '{"max_tokens":4000,"messages":[{"content":[{"text":"Add and multiply the number 2 and 3","cache_control":{"type":"ephemeral"},"type":"text"}],"role":"user"}],"model":"claude-sonnet-4-20250514","system":[{"text":"You are a helpful assistant. Always use both add and multiply at the same time.","cache_control":{"type":"ephemeral"},"type":"text"}],"tool_choice":{"disable_parallel_tool_use":false,"type":"auto"},"tools":[{"input_schema":{"properties":{"a":{"description":"first number","type":"integer"},"b":{"description":"second number","type":"integer"}},"required":["a","b"],"type":"object"},"name":"add","description":"Add two numbers"},{"input_schema":{"properties":{"a":{"description":"first number","type":"integer"},"b":{"description":"second number","type":"integer"}},"required":["a","b"],"type":"object"},"name":"multiply","description":"Multiply two numbers"}],"stream":true}'
12 headers:
13 Accept:
14 - application/json
15 Content-Type:
16 - application/json
17 User-Agent:
18 - Anthropic/Go 1.14.0
19 url: https://api.anthropic.com/v1/messages
20 method: POST
21 response:
22 proto: HTTP/2.0
23 proto_major: 2
24 proto_minor: 0
25 content_length: -1
26 body: |+
27 event: message_start
28 data: {"type":"message_start","message":{"model":"claude-sonnet-4-20250514","id":"msg_01Ps4SquTmAkLoZixSEW4SrN","type":"message","role":"assistant","content":[],"stop_reason":null,"stop_sequence":null,"usage":{"input_tokens":502,"cache_creation_input_tokens":0,"cache_read_input_tokens":0,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":0},"output_tokens":4,"service_tier":"standard"}} }
29
30 event: content_block_start
31 data: {"type":"content_block_start","index":0,"content_block":{"type":"text","text":""} }
32
33 event: content_block_delta
34 data: {"type":"content_block_delta","index":0,"delta":{"type":"text_delta","text":"I'll add an"} }
35
36 event: content_block_delta
37 data: {"type":"content_block_delta","index":0,"delta":{"type":"text_delta","text":"d multiply the numbers 2 and 3 for"} }
38
39 event: ping
40 data: {"type": "ping"}
41
42 event: content_block_delta
43 data: {"type":"content_block_delta","index":0,"delta":{"type":"text_delta","text":" you."} }
44
45 event: content_block_stop
46 data: {"type":"content_block_stop","index":0}
47
48 event: content_block_start
49 data: {"type":"content_block_start","index":1,"content_block":{"type":"tool_use","id":"toolu_014EzUJ1TCJvs3dR7mZZgoyd","name":"add","input":{}} }
50
51 event: content_block_delta
52 data: {"type":"content_block_delta","index":1,"delta":{"type":"input_json_delta","partial_json":""} }
53
54 event: content_block_delta
55 data: {"type":"content_block_delta","index":1,"delta":{"type":"input_json_delta","partial_json":"{\"a\":"} }
56
57 event: content_block_delta
58 data: {"type":"content_block_delta","index":1,"delta":{"type":"input_json_delta","partial_json":" 2"} }
59
60 event: content_block_delta
61 data: {"type":"content_block_delta","index":1,"delta":{"type":"input_json_delta","partial_json":", "} }
62
63 event: content_block_delta
64 data: {"type":"content_block_delta","index":1,"delta":{"type":"input_json_delta","partial_json":"\"b\": 3}"} }
65
66 event: content_block_stop
67 data: {"type":"content_block_stop","index":1 }
68
69 event: content_block_start
70 data: {"type":"content_block_start","index":2,"content_block":{"type":"tool_use","id":"toolu_01GYivdvVTotPKuatZiCkQvv","name":"multiply","input":{}} }
71
72 event: content_block_delta
73 data: {"type":"content_block_delta","index":2,"delta":{"type":"input_json_delta","partial_json":""} }
74
75 event: content_block_delta
76 data: {"type":"content_block_delta","index":2,"delta":{"type":"input_json_delta","partial_json":"{\"a\": "} }
77
78 event: content_block_delta
79 data: {"type":"content_block_delta","index":2,"delta":{"type":"input_json_delta","partial_json":"2"} }
80
81 event: content_block_delta
82 data: {"type":"content_block_delta","index":2,"delta":{"type":"input_json_delta","partial_json":", \"b\": "} }
83
84 event: content_block_delta
85 data: {"type":"content_block_delta","index":2,"delta":{"type":"input_json_delta","partial_json":"3}"} }
86
87 event: content_block_stop
88 data: {"type":"content_block_stop","index":2 }
89
90 event: message_delta
91 data: {"type":"message_delta","delta":{"stop_reason":"tool_use","stop_sequence":null},"usage":{"input_tokens":502,"cache_creation_input_tokens":0,"cache_read_input_tokens":0,"output_tokens":137} }
92
93 event: message_stop
94 data: {"type":"message_stop" }
95
96 headers:
97 Content-Type:
98 - text/event-stream; charset=utf-8
99 status: 200 OK
100 code: 200
101 duration: 1.806945584s
102- id: 1
103 request:
104 proto: HTTP/1.1
105 proto_major: 1
106 proto_minor: 1
107 content_length: 1469
108 host: ""
109 body: '{"max_tokens":4000,"messages":[{"content":[{"text":"Add and multiply the number 2 and 3","type":"text"}],"role":"user"},{"content":[{"text":"I''ll add and multiply the numbers 2 and 3 for you.","type":"text"},{"id":"toolu_014EzUJ1TCJvs3dR7mZZgoyd","input":{"a":2,"b":3},"name":"add","type":"tool_use"},{"id":"toolu_01GYivdvVTotPKuatZiCkQvv","input":{"a":2,"b":3},"name":"multiply","cache_control":{"type":"ephemeral"},"type":"tool_use"}],"role":"assistant"},{"content":[{"tool_use_id":"toolu_014EzUJ1TCJvs3dR7mZZgoyd","content":[{"text":"5","type":"text"}],"type":"tool_result"},{"tool_use_id":"toolu_01GYivdvVTotPKuatZiCkQvv","cache_control":{"type":"ephemeral"},"content":[{"text":"6","type":"text"}],"type":"tool_result"}],"role":"user"}],"model":"claude-sonnet-4-20250514","system":[{"text":"You are a helpful assistant. Always use both add and multiply at the same time.","cache_control":{"type":"ephemeral"},"type":"text"}],"tool_choice":{"disable_parallel_tool_use":false,"type":"auto"},"tools":[{"input_schema":{"properties":{"a":{"description":"first number","type":"integer"},"b":{"description":"second number","type":"integer"}},"required":["a","b"],"type":"object"},"name":"add","description":"Add two numbers"},{"input_schema":{"properties":{"a":{"description":"first number","type":"integer"},"b":{"description":"second number","type":"integer"}},"required":["a","b"],"type":"object"},"name":"multiply","description":"Multiply two numbers"}],"stream":true}'
110 headers:
111 Accept:
112 - application/json
113 Content-Type:
114 - application/json
115 User-Agent:
116 - Anthropic/Go 1.14.0
117 url: https://api.anthropic.com/v1/messages
118 method: POST
119 response:
120 proto: HTTP/2.0
121 proto_major: 2
122 proto_minor: 0
123 content_length: -1
124 body: |+
125 event: message_start
126 data: {"type":"message_start","message":{"model":"claude-sonnet-4-20250514","id":"msg_016tKmgfhWH1tfpDjeFE5JXn","type":"message","role":"assistant","content":[],"stop_reason":null,"stop_sequence":null,"usage":{"input_tokens":700,"cache_creation_input_tokens":0,"cache_read_input_tokens":0,"cache_creation":{"ephemeral_5m_input_tokens":0,"ephemeral_1h_input_tokens":0},"output_tokens":1,"service_tier":"standard"}} }
127
128 event: content_block_start
129 data: {"type":"content_block_start","index":0,"content_block":{"type":"text","text":""} }
130
131 event: content_block_delta
132 data: {"type":"content_block_delta","index":0,"delta":{"type":"text_delta","text":"The"} }
133
134 event: content_block_delta
135 data: {"type":"content_block_delta","index":0,"delta":{"type":"text_delta","text":" results are:\n- Adding"} }
136
137 event: ping
138 data: {"type": "ping"}
139
140 event: content_block_delta
141 data: {"type":"content_block_delta","index":0,"delta":{"type":"text_delta","text":" 2 + 3 = 5\n-"} }
142
143 event: content_block_delta
144 data: {"type":"content_block_delta","index":0,"delta":{"type":"text_delta","text":" Multiplying 2 × "} }
145
146 event: content_block_delta
147 data: {"type":"content_block_delta","index":0,"delta":{"type":"text_delta","text":"3 = 6"} }
148
149 event: content_block_stop
150 data: {"type":"content_block_stop","index":0 }
151
152 event: message_delta
153 data: {"type":"message_delta","delta":{"stop_reason":"end_turn","stop_sequence":null},"usage":{"input_tokens":700,"cache_creation_input_tokens":0,"cache_read_input_tokens":0,"output_tokens":35} }
154
155 event: message_stop
156 data: {"type":"message_stop" }
157
158 headers:
159 Content-Type:
160 - text/event-stream; charset=utf-8
161 status: 200 OK
162 code: 200
163 duration: 1.850997125s