github.com/anthropics/anthropic-sdk-go@v1.70.1/toolrunner/testdata/cassettes/tool_runner_next_streaming.yaml

---
version: 1
interactions:
- request:
    body: '{"max_tokens":512,"messages":[{"content":[{"text":"Weather in SF?","type":"text"}],"role":"user"}],"model":"claude-3-7-sonnet-latest","tools":[{"input_schema":{"properties":{"city":{"type":"string"},"units":{"enum":["celsius","fahrenheit"],"type":"string"}},"required":["city"],"type":"object"},"name":"get_weather","description":"Get
      weather"}],"stream":true}'
    form: {}
    headers:
      Accept:
      - application/json
      Anthropic-Version:
      - "2023-06-01"
      Content-Type:
      - application/json
      User-Agent:
      - Anthropic/Go 1.16.0
      X-Api-Key:
      - fake-api-key-for-testing-only
      X-Stainless-Arch:
      - arm64
      X-Stainless-Lang:
      - go
      X-Stainless-Os:
      - MacOS
      X-Stainless-Package-Version:
      - 1.16.0
      X-Stainless-Retry-Count:
      - "0"
      X-Stainless-Runtime:
      - go
      X-Stainless-Runtime-Version:
      - go1.24.5
    url: https://api.anthropic.com/v1/messages?beta=true
    method: POST
  response:
    body: |+
      event: message_start
      data: {"type":"message_start","message":{"model":"claude-3-7-sonnet-20250219","id":"msg_01P7nF1bmxyzFZjF8zwbUDBM","type":"message","role":"assistant","content":[],"stop_reason":null,"stop_sequence":null,"usage":{"input_tokens":394,"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"}}       }

      event: content_block_start
      data: {"type":"content_block_start","index":0,"content_block":{"type":"text","text":""} }

      event: content_block_delta
      data: {"type":"content_block_delta","index":0,"delta":{"type":"text_delta","text":"I"}      }

      event: content_block_delta
      data: {"type":"content_block_delta","index":0,"delta":{"type":"text_delta","text":"'"}        }

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

      event: content_block_delta
      data: {"type":"content_block_delta","index":0,"delta":{"type":"text_delta","text":"d be"}               }

      event: content_block_delta
      data: {"type":"content_block_delta","index":0,"delta":{"type":"text_delta","text":" happy to check"}      }

      event: content_block_delta
      data: {"type":"content_block_delta","index":0,"delta":{"type":"text_delta","text":" the weather"}              }

      event: content_block_delta
      data: {"type":"content_block_delta","index":0,"delta":{"type":"text_delta","text":" in"}  }

      event: content_block_delta
      data: {"type":"content_block_delta","index":0,"delta":{"type":"text_delta","text":" San Francisco for you."}}

      event: content_block_delta
      data: {"type":"content_block_delta","index":0,"delta":{"type":"text_delta","text":" Let"}       }

      event: content_block_delta
      data: {"type":"content_block_delta","index":0,"delta":{"type":"text_delta","text":" me get"}  }

      event: content_block_delta
      data: {"type":"content_block_delta","index":0,"delta":{"type":"text_delta","text":" that"}}

      event: content_block_delta
      data: {"type":"content_block_delta","index":0,"delta":{"type":"text_delta","text":" information for you right"}    }

      event: content_block_delta
      data: {"type":"content_block_delta","index":0,"delta":{"type":"text_delta","text":" away"} }

      event: content_block_delta
      data: {"type":"content_block_delta","index":0,"delta":{"type":"text_delta","text":"."}     }

      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":"tool_use","id":"toolu_017QoD96fYwGzCWvLfaPADWg","name":"get_weather","input":{}}   }

      event: content_block_delta
      data: {"type":"content_block_delta","index":1,"delta":{"type":"input_json_delta","partial_json":""} }

      event: content_block_delta
      data: {"type":"content_block_delta","index":1,"delta":{"type":"input_json_delta","partial_json":"{\"city\": \"Sa"}  }

      event: content_block_delta
      data: {"type":"content_block_delta","index":1,"delta":{"type":"input_json_delta","partial_json":"n Francis"}   }

      event: content_block_delta
      data: {"type":"content_block_delta","index":1,"delta":{"type":"input_json_delta","partial_json":"co\"}"}         }

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

      event: message_delta
      data: {"type":"message_delta","delta":{"stop_reason":"tool_use","stop_sequence":null},"usage":{"input_tokens":394,"cache_creation_input_tokens":0,"cache_read_input_tokens":0,"output_tokens":79} }

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

    headers:
      Anthropic-Organization-Id:
      - 1577a8a6-174a-4705-916c-6b22ae7a49e6
      Anthropic-Ratelimit-Input-Tokens-Limit:
      - "200000"
      Anthropic-Ratelimit-Input-Tokens-Remaining:
      - "199000"
      Anthropic-Ratelimit-Input-Tokens-Reset:
      - "2025-10-30T16:17:36Z"
      Anthropic-Ratelimit-Output-Tokens-Limit:
      - "80000"
      Anthropic-Ratelimit-Output-Tokens-Remaining:
      - "80000"
      Anthropic-Ratelimit-Output-Tokens-Reset:
      - "2025-10-30T16:17:36Z"
      Anthropic-Ratelimit-Requests-Limit:
      - "4000"
      Anthropic-Ratelimit-Requests-Remaining:
      - "3999"
      Anthropic-Ratelimit-Requests-Reset:
      - "2025-10-30T16:17:36Z"
      Anthropic-Ratelimit-Tokens-Limit:
      - "280000"
      Anthropic-Ratelimit-Tokens-Remaining:
      - "279000"
      Anthropic-Ratelimit-Tokens-Reset:
      - "2025-10-30T16:17:36Z"
      Cache-Control:
      - no-cache
      Cf-Cache-Status:
      - DYNAMIC
      Cf-Ray:
      - 996c3946fe585e6a-EWR
      Content-Type:
      - text/event-stream; charset=utf-8
      Date:
      - Thu, 30 Oct 2025 16:17:36 GMT
      Request-Id:
      - req_011CUdgeEggCMUt3Y8mNfvTP
      Server:
      - cloudflare
      Strict-Transport-Security:
      - max-age=31536000; includeSubDomains; preload
      X-Envoy-Upstream-Service-Time:
      - "1133"
      X-Robots-Tag:
      - none
    status: 200 OK
    code: 200
    duration: ""