使用扩展思维进行构建

event: message_start
data: {"type":"message_start","message":{"id":"msg_018J5iQyrGb5Xgy5CWx3iQFB","type":"message","role":"assistant","model":"claude-3-7-sonnet-20250219","content":[],"stop_reason":null,"stop_sequence":null,"usage":{"input_tokens":92,"cache_creation_input_tokens":0,"cache_read_input_tokens":0,"output_tokens":3}}       }

event: content_block_start
data: {"type":"content_block_start","index":0,"content_block":{"type":"redacted_thinking","data":"EvEBCoYBGAIiQAqN5Z4LumxzafxD2yf2zW+hVm/G2/Am05ChRXkU1Xe2wQLPLo0wnmoaVJI1WTkLpRYJAIz2UjzHblLwkJ59xeAqQNr5EWqMZkOr8yNcpbCO5PssXiUvEjhoaC0IN3qyhE3vumOOS9Qd0Ku4AYTgu8VjP4C6IJHnkuIexa0VrU/cFbISDJjPWOWQlyAx4y5FCRoMk55jLUCR8KCZrKrzIjDR8S3F/pCWlz/JA5RN0uprpWAI75HjgcY2NJkPX3sEC0Ew6fl6YEISNk1XsmzWtj4qGArQlCfAW9l8SDiKbXm0UZ4hQhh2ruPbaw=="}  }

event: ping
data: {"type": "ping"}

event: content_block_stop
data: {"type":"content_block_stop","index":0         }

event: content_block_start
data: {"type":"content_block_start","index":1,"content_block":{"type":"redacted_thinking","data":"EvMBCoYBGAIiQKZ6LAz+dCNWxvz0dmjI0gfqEInA9MLVAtFJTpolzOaIbUs28xuKyXVzEQsPWPvP12gN+hxVJ4mYzWT8DCIAxXIqQHwQZcGASLMxWCfHrUlYfFq0vF8IGhRgQKxpj1zxouNLuKdhpZrcHF9vKODIPCPW8EWD13aI6t+exz/UboOs/ZMSDA8tVDp4vkOEUc7sGBoMbiRhGYMqcmAOhb3nIjC/lewBt2l9P+VpJkV78YQ3LhvNh/q3KfsbGuJ2U+lIMPGf9wnzrRC/6xqdsHPe1B0qGozBPKnbBifhyb7xYyWcEWoi/qW9OdoFl1/w"}            }

event: content_block_stop
data: {"type":"content_block_stop","index":1             }

event: content_block_start
data: {"type":"content_block_start","index":2,"content_block":{"type":"redacted_thinking","data":"Eu8BCoYBGAIiQCXtUNB4QyT//Zww832Q+xjJ0oa7/PQZr74OvbS1+a7cRNywZfYMYGGte3RXXTMa6I0bFJOMmXXckcbLxR/L+msqQLhKGx9Bt2FnLpo7bp/PdMQBDDCo+jkbOctnxBQrHCuYbu33o30qPCh73AZ8O1xXXEZfzfLC0L6RoHzLxQSHN5gSDAxGSY7Ifg073BaUYBoMSWHLVrmZrydEfc7SIjAF1R+fYlyVPFwS4Sac/Dw9caskXNF/p+Yn7RNaW9+v/jL03qsqqvemuqRGltSBfZcqFrowQipxo/ftIkEC47Ua64RzSBIe27E="}   }

event: content_block_stop
data: {"type":"content_block_stop","index":2              }

event: content_block_start
data: {"type":"content_block_start","index":3,"content_block":{"type":"redacted_thinking","data":"Eu8BCoYBGAIiQEgE6WUvQO3d6fPpY3OaA95soqeWgZv/Nyi0X6iywTb5KqvUn9NxWySiZwSFZb+4S8ymtHRO4OBKA7eRWEXcBuQqQNudvV6YSFH5ErwaDME0HaEjtHcuy8SslL6RhLwhEJKGpYCzq7zWupcMBB1g57sR8vh/JwGjr7D9sfX9jmM7EsESDEatCbzVVczyZ0TERRoMenFOToj2qn0Xmh1LIjA1WgxaMqiHhb5T4k/++UCKNMH2SEseLzTlR7uIz20qZUXDWtoVck6wc+x7lSWRKXQqFiLoTO1oG0I/lbPz1n2FgC3MH7683FU="}     }

// 额外的事件...

event: content_block_start
data: {"type":"content_block_start","index":58,"content_block":{"type":"redacted_thinking","data":"EuoBCoYBGAIiQJ/SxkPAgqxhKok29YrpJHRUJ0OT8ahCHKAwyhmRuUhtdmDX9+mn4gDzKNv3fVpQdB01zEPMzNY3QuTCd+1bdtEqQK6JuKHqdndbwpr81oVWb4wxd1GqF/7Jkw74IlQa27oobX+KuRkopr9Dllt/RDe7Se0sI1IkU7tJIAQCoP46OAwSDF51P09q67xhHlQ3ihoM2aOVlkghq/X0w8NlIjBMNvXYNbjhyrOcIg6kPFn2ed/KK7Cm5prYAtXCwkb4Wr5tUSoSHu9T5hKdJRbr6WsqEc7Lle7FULqMLZGkhqXyc3BA"}        }

event: content_block_stop
data: {"type":"content_block_stop","index":58            }

event: content_block_start
data: {"type":"content_block_start","index":59,"content_block":{"type":"text","text":""}              }

event: content_block_delta
data: {"type":"content_block_delta","index":59,"delta":{"type":"text_delta","text":"I'm"}        }

event: content_block_delta
data: {"type":"content_block_delta","index":59,"delta":{"type":"text_delta","text":" not"}     }

event: content_block_delta
data: {"type":"content_block_delta","index":59,"delta":{"type":"text_delta","text":" sure"}    }

// 额外的文本增量...

event: content_block_delta
data: {"type":"content_block_delta","index":59,"delta":{"type":"text_delta","text":" me know what you'"}          }

event: content_block_delta
data: {"type":"content_block_delta","index":59,"delta":{"type":"text_delta","text":"d like assistance with."}   }

event: content_block_stop
data: {"type":"content_block_stop","index":59               }

event: message_delta
data: {"type":"message_delta","delta":{"stop_reason":"end_turn","stop_sequence":null},"usage":{"output_tokens":184}  }

event: message_stop
data: {"type":"message_stop"          }

第一个请求 - 建立缓存
第一个响应使用情况：{ cache_creation_input_tokens: 1365, cache_read_input_tokens: 0, input_tokens: 44, output_tokens: 725 }

第二个请求 - 相同的思维参数（预期缓存命中）
第二个响应使用情况：{ cache_creation_input_tokens: 0, cache_read_input_tokens: 1365, input_tokens: 386, output_tokens: 765 }

第三个请求 - 不同的思维预算（预期缓存命中）
第三个响应使用情况：{ cache_creation_input_tokens: 0, cache_read_input_tokens: 1365, input_tokens: 811, output_tokens: 542 }

第一个请求 - 建立缓存
第一个响应使用情况：{ cache_creation_input_tokens: 1370, cache_read_input_tokens: 0, input_tokens: 17, output_tokens: 700 }

第二个请求 - 相同的思维参数（预期缓存命中）

第二个响应使用情况：{ cache_creation_input_tokens: 0, cache_read_input_tokens: 1370, input_tokens: 303, output_tokens: 874 }

第三个请求 - 不同的思维预算（预期缓存未命中）
第三个响应使用情况：{ cache_creation_input_tokens: 1370, cache_read_input_tokens: 0, input_tokens: 747, output_tokens: 619 }

{
    "content": [
        {
            "type": "thinking",
            "thinking": "The user wants to know the current weather in Paris. I have access to a function `get_weather`...",
            "signature": "BDaL4VrbR2Oj0hO4XpJxT28J5TILnCrrUXoKiiNBZW9P+nr8XSj1zuZzAl4egiCCpQNvfyUuFFJP5CncdYZEQPPmLxYsNrcs...."
        },
        {
            "type": "text",
            "text": "I can help you get the current weather information for Paris. Let me check that for you"
        },
        {
            "type": "tool_use",
            "id": "toolu_01CswdEQBMshySk6Y9DFKrfq",
            "name": "get_weather",
            "input": {
                "location": "Paris"
            }
        }
    ]
}

{
    "content": [
        {
            "type": "text",
            "text": "Currently in Paris, the temperature is 88°F (31°C)"
        }
    ]
}