curl --request POST \
  --url https://api.example.com/v1/messages/count_tokens \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "messages": [
    {
      "content": "<string>",
      "output_config": {}
    }
  ],
  "model": "<string>",
  "cache_control": {
    "type": "ephemeral"
  },
  "context_management": {
    "edits": [
      {
        "type": "clear_tool_uses_20250919",
        "clear_at_least": {
          "type": "input_tokens",
          "value": 123
        },
        "clear_tool_inputs": true,
        "exclude_tools": [
          "<string>"
        ],
        "keep": {
          "type": "tool_uses",
          "value": 123
        },
        "trigger": {
          "type": "input_tokens",
          "value": 123
        }
      }
    ]
  },
  "mcp_servers": [
    {
      "name": "<string>",
      "type": "url",
      "url": "<string>",
      "authorization_token": "<string>",
      "tool_configuration": {
        "allowed_tools": [
          "<string>"
        ],
        "enabled": true
      }
    }
  ],
  "output_config": {
    "format": {
      "schema": "<unknown>",
      "type": "json_schema"
    },
    "task_budget": {
      "total": 123,
      "type": "tokens",
      "remaining": 123
    }
  },
  "output_format": {
    "schema": "<unknown>",
    "type": "json_schema"
  },
  "system": "<string>",
  "thinking": {
    "type": "enabled"
  },
  "tool_choice": {
    "type": "auto"
  },
  "tools": [
    {
      "type": "browser_toolset_20260801",
      "allowed_callers": [],
      "cache_control": {
        "type": "ephemeral"
      },
      "configs": {
        "close_tab": {
          "defer_loading": true,
          "enabled": true
        },
        "double_click": {
          "defer_loading": true,
          "enabled": true
        },
        "file_upload": {
          "defer_loading": true,
          "enabled": true
        },
        "find": {
          "defer_loading": true,
          "enabled": true
        },
        "form_input": {
          "defer_loading": true,
          "enabled": true
        },
        "get_page_text": {
          "defer_loading": true,
          "enabled": true
        },
        "hold_key": {
          "defer_loading": true,
          "enabled": true
        },
        "hover": {
          "defer_loading": true,
          "enabled": true
        },
        "javascript_exec": {
          "defer_loading": true,
          "enabled": true
        },
        "key": {
          "defer_loading": true,
          "enabled": true
        },
        "left_click": {
          "defer_loading": true,
          "enabled": true
        },
        "left_click_drag": {
          "defer_loading": true,
          "enabled": true
        },
        "left_mouse_down": {
          "defer_loading": true,
          "enabled": true
        },
        "left_mouse_up": {
          "defer_loading": true,
          "enabled": true
        },
        "list_tabs": {
          "defer_loading": true,
          "enabled": true
        },
        "middle_click": {
          "defer_loading": true,
          "enabled": true
        },
        "mouse_move": {
          "defer_loading": true,
          "enabled": true
        },
        "navigate": {
          "defer_loading": true,
          "enabled": true
        },
        "new_tab": {
          "defer_loading": true,
          "enabled": true
        },
        "read_console": {
          "defer_loading": true,
          "enabled": true
        },
        "read_network": {
          "defer_loading": true,
          "enabled": true
        },
        "read_page": {
          "defer_loading": true,
          "enabled": true
        },
        "right_click": {
          "defer_loading": true,
          "enabled": true
        },
        "screenshot": {
          "defer_loading": true,
          "enabled": true
        },
        "scroll": {
          "defer_loading": true,
          "enabled": true
        },
        "scroll_to": {
          "defer_loading": true,
          "enabled": true
        },
        "switch_tab": {
          "defer_loading": true,
          "enabled": true
        },
        "triple_click": {
          "defer_loading": true,
          "enabled": true
        },
        "type": {
          "defer_loading": true,
          "enabled": true
        },
        "wait": {
          "defer_loading": true,
          "enabled": true
        },
        "zoom": {
          "defer_loading": true,
          "enabled": true
        }
      }
    }
  ]
}
'

import requests

url = "https://api.example.com/v1/messages/count_tokens"

payload = {
    "messages": [
        {
            "content": "<string>",
            "output_config": {}
        }
    ],
    "model": "<string>",
    "cache_control": { "type": "ephemeral" },
    "context_management": { "edits": [
            {
                "type": "clear_tool_uses_20250919",
                "clear_at_least": {
                    "type": "input_tokens",
                    "value": 123
                },
                "clear_tool_inputs": True,
                "exclude_tools": ["<string>"],
                "keep": {
                    "type": "tool_uses",
                    "value": 123
                },
                "trigger": {
                    "type": "input_tokens",
                    "value": 123
                }
            }
        ] },
    "mcp_servers": [
        {
            "name": "<string>",
            "type": "url",
            "url": "<string>",
            "authorization_token": "<string>",
            "tool_configuration": {
                "allowed_tools": ["<string>"],
                "enabled": True
            }
        }
    ],
    "output_config": {
        "format": {
            "schema": "<unknown>",
            "type": "json_schema"
        },
        "task_budget": {
            "total": 123,
            "type": "tokens",
            "remaining": 123
        }
    },
    "output_format": {
        "schema": "<unknown>",
        "type": "json_schema"
    },
    "system": "<string>",
    "thinking": { "type": "enabled" },
    "tool_choice": { "type": "auto" },
    "tools": [
        {
            "type": "browser_toolset_20260801",
            "allowed_callers": [],
            "cache_control": { "type": "ephemeral" },
            "configs": {
                "close_tab": {
                    "defer_loading": True,
                    "enabled": True
                },
                "double_click": {
                    "defer_loading": True,
                    "enabled": True
                },
                "file_upload": {
                    "defer_loading": True,
                    "enabled": True
                },
                "find": {
                    "defer_loading": True,
                    "enabled": True
                },
                "form_input": {
                    "defer_loading": True,
                    "enabled": True
                },
                "get_page_text": {
                    "defer_loading": True,
                    "enabled": True
                },
                "hold_key": {
                    "defer_loading": True,
                    "enabled": True
                },
                "hover": {
                    "defer_loading": True,
                    "enabled": True
                },
                "javascript_exec": {
                    "defer_loading": True,
                    "enabled": True
                },
                "key": {
                    "defer_loading": True,
                    "enabled": True
                },
                "left_click": {
                    "defer_loading": True,
                    "enabled": True
                },
                "left_click_drag": {
                    "defer_loading": True,
                    "enabled": True
                },
                "left_mouse_down": {
                    "defer_loading": True,
                    "enabled": True
                },
                "left_mouse_up": {
                    "defer_loading": True,
                    "enabled": True
                },
                "list_tabs": {
                    "defer_loading": True,
                    "enabled": True
                },
                "middle_click": {
                    "defer_loading": True,
                    "enabled": True
                },
                "mouse_move": {
                    "defer_loading": True,
                    "enabled": True
                },
                "navigate": {
                    "defer_loading": True,
                    "enabled": True
                },
                "new_tab": {
                    "defer_loading": True,
                    "enabled": True
                },
                "read_console": {
                    "defer_loading": True,
                    "enabled": True
                },
                "read_network": {
                    "defer_loading": True,
                    "enabled": True
                },
                "read_page": {
                    "defer_loading": True,
                    "enabled": True
                },
                "right_click": {
                    "defer_loading": True,
                    "enabled": True
                },
                "screenshot": {
                    "defer_loading": True,
                    "enabled": True
                },
                "scroll": {
                    "defer_loading": True,
                    "enabled": True
                },
                "scroll_to": {
                    "defer_loading": True,
                    "enabled": True
                },
                "switch_tab": {
                    "defer_loading": True,
                    "enabled": True
                },
                "triple_click": {
                    "defer_loading": True,
                    "enabled": True
                },
                "type": {
                    "defer_loading": True,
                    "enabled": True
                },
                "wait": {
                    "defer_loading": True,
                    "enabled": True
                },
                "zoom": {
                    "defer_loading": True,
                    "enabled": True
                }
            }
        }
    ]
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    messages: [{content: '<string>', output_config: {}}],
    model: '<string>',
    cache_control: {type: 'ephemeral'},
    context_management: {
      edits: [
        {
          type: 'clear_tool_uses_20250919',
          clear_at_least: {type: 'input_tokens', value: 123},
          clear_tool_inputs: true,
          exclude_tools: ['<string>'],
          keep: {type: 'tool_uses', value: 123},
          trigger: {type: 'input_tokens', value: 123}
        }
      ]
    },
    mcp_servers: [
      {
        name: '<string>',
        type: 'url',
        url: '<string>',
        authorization_token: '<string>',
        tool_configuration: {allowed_tools: ['<string>'], enabled: true}
      }
    ],
    output_config: {
      format: {schema: '<unknown>', type: 'json_schema'},
      task_budget: {total: 123, type: 'tokens', remaining: 123}
    },
    output_format: {schema: '<unknown>', type: 'json_schema'},
    system: '<string>',
    thinking: {type: 'enabled'},
    tool_choice: {type: 'auto'},
    tools: [
      {
        type: 'browser_toolset_20260801',
        allowed_callers: [],
        cache_control: {type: 'ephemeral'},
        configs: {
          close_tab: {defer_loading: true, enabled: true},
          double_click: {defer_loading: true, enabled: true},
          file_upload: {defer_loading: true, enabled: true},
          find: {defer_loading: true, enabled: true},
          form_input: {defer_loading: true, enabled: true},
          get_page_text: {defer_loading: true, enabled: true},
          hold_key: {defer_loading: true, enabled: true},
          hover: {defer_loading: true, enabled: true},
          javascript_exec: {defer_loading: true, enabled: true},
          key: {defer_loading: true, enabled: true},
          left_click: {defer_loading: true, enabled: true},
          left_click_drag: {defer_loading: true, enabled: true},
          left_mouse_down: {defer_loading: true, enabled: true},
          left_mouse_up: {defer_loading: true, enabled: true},
          list_tabs: {defer_loading: true, enabled: true},
          middle_click: {defer_loading: true, enabled: true},
          mouse_move: {defer_loading: true, enabled: true},
          navigate: {defer_loading: true, enabled: true},
          new_tab: {defer_loading: true, enabled: true},
          read_console: {defer_loading: true, enabled: true},
          read_network: {defer_loading: true, enabled: true},
          read_page: {defer_loading: true, enabled: true},
          right_click: {defer_loading: true, enabled: true},
          screenshot: {defer_loading: true, enabled: true},
          scroll: {defer_loading: true, enabled: true},
          scroll_to: {defer_loading: true, enabled: true},
          switch_tab: {defer_loading: true, enabled: true},
          triple_click: {defer_loading: true, enabled: true},
          type: {defer_loading: true, enabled: true},
          wait: {defer_loading: true, enabled: true},
          zoom: {defer_loading: true, enabled: true}
        }
      }
    ]
  })
};

fetch('https://api.example.com/v1/messages/count_tokens', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.example.com/v1/messages/count_tokens",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'messages' => [
        [
                'content' => '<string>',
                'output_config' => [
                                
                ]
        ]
    ],
    'model' => '<string>',
    'cache_control' => [
        'type' => 'ephemeral'
    ],
    'context_management' => [
        'edits' => [
                [
                                'type' => 'clear_tool_uses_20250919',
                                'clear_at_least' => [
                                                                'type' => 'input_tokens',
                                                                'value' => 123
                                ],
                                'clear_tool_inputs' => true,
                                'exclude_tools' => [
                                                                '<string>'
                                ],
                                'keep' => [
                                                                'type' => 'tool_uses',
                                                                'value' => 123
                                ],
                                'trigger' => [
                                                                'type' => 'input_tokens',
                                                                'value' => 123
                                ]
                ]
        ]
    ],
    'mcp_servers' => [
        [
                'name' => '<string>',
                'type' => 'url',
                'url' => '<string>',
                'authorization_token' => '<string>',
                'tool_configuration' => [
                                'allowed_tools' => [
                                                                '<string>'
                                ],
                                'enabled' => true
                ]
        ]
    ],
    'output_config' => [
        'format' => [
                'schema' => '<unknown>',
                'type' => 'json_schema'
        ],
        'task_budget' => [
                'total' => 123,
                'type' => 'tokens',
                'remaining' => 123
        ]
    ],
    'output_format' => [
        'schema' => '<unknown>',
        'type' => 'json_schema'
    ],
    'system' => '<string>',
    'thinking' => [
        'type' => 'enabled'
    ],
    'tool_choice' => [
        'type' => 'auto'
    ],
    'tools' => [
        [
                'type' => 'browser_toolset_20260801',
                'allowed_callers' => [
                                
                ],
                'cache_control' => [
                                'type' => 'ephemeral'
                ],
                'configs' => [
                                'close_tab' => [
                                                                'defer_loading' => true,
                                                                'enabled' => true
                                ],
                                'double_click' => [
                                                                'defer_loading' => true,
                                                                'enabled' => true
                                ],
                                'file_upload' => [
                                                                'defer_loading' => true,
                                                                'enabled' => true
                                ],
                                'find' => [
                                                                'defer_loading' => true,
                                                                'enabled' => true
                                ],
                                'form_input' => [
                                                                'defer_loading' => true,
                                                                'enabled' => true
                                ],
                                'get_page_text' => [
                                                                'defer_loading' => true,
                                                                'enabled' => true
                                ],
                                'hold_key' => [
                                                                'defer_loading' => true,
                                                                'enabled' => true
                                ],
                                'hover' => [
                                                                'defer_loading' => true,
                                                                'enabled' => true
                                ],
                                'javascript_exec' => [
                                                                'defer_loading' => true,
                                                                'enabled' => true
                                ],
                                'key' => [
                                                                'defer_loading' => true,
                                                                'enabled' => true
                                ],
                                'left_click' => [
                                                                'defer_loading' => true,
                                                                'enabled' => true
                                ],
                                'left_click_drag' => [
                                                                'defer_loading' => true,
                                                                'enabled' => true
                                ],
                                'left_mouse_down' => [
                                                                'defer_loading' => true,
                                                                'enabled' => true
                                ],
                                'left_mouse_up' => [
                                                                'defer_loading' => true,
                                                                'enabled' => true
                                ],
                                'list_tabs' => [
                                                                'defer_loading' => true,
                                                                'enabled' => true
                                ],
                                'middle_click' => [
                                                                'defer_loading' => true,
                                                                'enabled' => true
                                ],
                                'mouse_move' => [
                                                                'defer_loading' => true,
                                                                'enabled' => true
                                ],
                                'navigate' => [
                                                                'defer_loading' => true,
                                                                'enabled' => true
                                ],
                                'new_tab' => [
                                                                'defer_loading' => true,
                                                                'enabled' => true
                                ],
                                'read_console' => [
                                                                'defer_loading' => true,
                                                                'enabled' => true
                                ],
                                'read_network' => [
                                                                'defer_loading' => true,
                                                                'enabled' => true
                                ],
                                'read_page' => [
                                                                'defer_loading' => true,
                                                                'enabled' => true
                                ],
                                'right_click' => [
                                                                'defer_loading' => true,
                                                                'enabled' => true
                                ],
                                'screenshot' => [
                                                                'defer_loading' => true,
                                                                'enabled' => true
                                ],
                                'scroll' => [
                                                                'defer_loading' => true,
                                                                'enabled' => true
                                ],
                                'scroll_to' => [
                                                                'defer_loading' => true,
                                                                'enabled' => true
                                ],
                                'switch_tab' => [
                                                                'defer_loading' => true,
                                                                'enabled' => true
                                ],
                                'triple_click' => [
                                                                'defer_loading' => true,
                                                                'enabled' => true
                                ],
                                'type' => [
                                                                'defer_loading' => true,
                                                                'enabled' => true
                                ],
                                'wait' => [
                                                                'defer_loading' => true,
                                                                'enabled' => true
                                ],
                                'zoom' => [
                                                                'defer_loading' => true,
                                                                'enabled' => true
                                ]
                ]
        ]
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.example.com/v1/messages/count_tokens"

	payload := strings.NewReader("{\n  \"messages\": [\n    {\n      \"content\": \"<string>\",\n      \"output_config\": {}\n    }\n  ],\n  \"model\": \"<string>\",\n  \"cache_control\": {\n    \"type\": \"ephemeral\"\n  },\n  \"context_management\": {\n    \"edits\": [\n      {\n        \"type\": \"clear_tool_uses_20250919\",\n        \"clear_at_least\": {\n          \"type\": \"input_tokens\",\n          \"value\": 123\n        },\n        \"clear_tool_inputs\": true,\n        \"exclude_tools\": [\n          \"<string>\"\n        ],\n        \"keep\": {\n          \"type\": \"tool_uses\",\n          \"value\": 123\n        },\n        \"trigger\": {\n          \"type\": \"input_tokens\",\n          \"value\": 123\n        }\n      }\n    ]\n  },\n  \"mcp_servers\": [\n    {\n      \"name\": \"<string>\",\n      \"type\": \"url\",\n      \"url\": \"<string>\",\n      \"authorization_token\": \"<string>\",\n      \"tool_configuration\": {\n        \"allowed_tools\": [\n          \"<string>\"\n        ],\n        \"enabled\": true\n      }\n    }\n  ],\n  \"output_config\": {\n    \"format\": {\n      \"schema\": \"<unknown>\",\n      \"type\": \"json_schema\"\n    },\n    \"task_budget\": {\n      \"total\": 123,\n      \"type\": \"tokens\",\n      \"remaining\": 123\n    }\n  },\n  \"output_format\": {\n    \"schema\": \"<unknown>\",\n    \"type\": \"json_schema\"\n  },\n  \"system\": \"<string>\",\n  \"thinking\": {\n    \"type\": \"enabled\"\n  },\n  \"tool_choice\": {\n    \"type\": \"auto\"\n  },\n  \"tools\": [\n    {\n      \"type\": \"browser_toolset_20260801\",\n      \"allowed_callers\": [],\n      \"cache_control\": {\n        \"type\": \"ephemeral\"\n      },\n      \"configs\": {\n        \"close_tab\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"double_click\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"file_upload\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"find\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"form_input\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"get_page_text\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"hold_key\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"hover\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"javascript_exec\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"key\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"left_click\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"left_click_drag\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"left_mouse_down\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"left_mouse_up\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"list_tabs\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"middle_click\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"mouse_move\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"navigate\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"new_tab\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"read_console\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"read_network\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"read_page\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"right_click\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"screenshot\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"scroll\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"scroll_to\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"switch_tab\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"triple_click\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"type\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"wait\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"zoom\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        }\n      }\n    }\n  ]\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.post("https://api.example.com/v1/messages/count_tokens")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"messages\": [\n    {\n      \"content\": \"<string>\",\n      \"output_config\": {}\n    }\n  ],\n  \"model\": \"<string>\",\n  \"cache_control\": {\n    \"type\": \"ephemeral\"\n  },\n  \"context_management\": {\n    \"edits\": [\n      {\n        \"type\": \"clear_tool_uses_20250919\",\n        \"clear_at_least\": {\n          \"type\": \"input_tokens\",\n          \"value\": 123\n        },\n        \"clear_tool_inputs\": true,\n        \"exclude_tools\": [\n          \"<string>\"\n        ],\n        \"keep\": {\n          \"type\": \"tool_uses\",\n          \"value\": 123\n        },\n        \"trigger\": {\n          \"type\": \"input_tokens\",\n          \"value\": 123\n        }\n      }\n    ]\n  },\n  \"mcp_servers\": [\n    {\n      \"name\": \"<string>\",\n      \"type\": \"url\",\n      \"url\": \"<string>\",\n      \"authorization_token\": \"<string>\",\n      \"tool_configuration\": {\n        \"allowed_tools\": [\n          \"<string>\"\n        ],\n        \"enabled\": true\n      }\n    }\n  ],\n  \"output_config\": {\n    \"format\": {\n      \"schema\": \"<unknown>\",\n      \"type\": \"json_schema\"\n    },\n    \"task_budget\": {\n      \"total\": 123,\n      \"type\": \"tokens\",\n      \"remaining\": 123\n    }\n  },\n  \"output_format\": {\n    \"schema\": \"<unknown>\",\n    \"type\": \"json_schema\"\n  },\n  \"system\": \"<string>\",\n  \"thinking\": {\n    \"type\": \"enabled\"\n  },\n  \"tool_choice\": {\n    \"type\": \"auto\"\n  },\n  \"tools\": [\n    {\n      \"type\": \"browser_toolset_20260801\",\n      \"allowed_callers\": [],\n      \"cache_control\": {\n        \"type\": \"ephemeral\"\n      },\n      \"configs\": {\n        \"close_tab\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"double_click\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"file_upload\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"find\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"form_input\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"get_page_text\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"hold_key\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"hover\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"javascript_exec\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"key\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"left_click\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"left_click_drag\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"left_mouse_down\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"left_mouse_up\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"list_tabs\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"middle_click\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"mouse_move\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"navigate\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"new_tab\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"read_console\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"read_network\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"read_page\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"right_click\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"screenshot\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"scroll\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"scroll_to\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"switch_tab\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"triple_click\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"type\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"wait\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"zoom\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        }\n      }\n    }\n  ]\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.example.com/v1/messages/count_tokens")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"messages\": [\n    {\n      \"content\": \"<string>\",\n      \"output_config\": {}\n    }\n  ],\n  \"model\": \"<string>\",\n  \"cache_control\": {\n    \"type\": \"ephemeral\"\n  },\n  \"context_management\": {\n    \"edits\": [\n      {\n        \"type\": \"clear_tool_uses_20250919\",\n        \"clear_at_least\": {\n          \"type\": \"input_tokens\",\n          \"value\": 123\n        },\n        \"clear_tool_inputs\": true,\n        \"exclude_tools\": [\n          \"<string>\"\n        ],\n        \"keep\": {\n          \"type\": \"tool_uses\",\n          \"value\": 123\n        },\n        \"trigger\": {\n          \"type\": \"input_tokens\",\n          \"value\": 123\n        }\n      }\n    ]\n  },\n  \"mcp_servers\": [\n    {\n      \"name\": \"<string>\",\n      \"type\": \"url\",\n      \"url\": \"<string>\",\n      \"authorization_token\": \"<string>\",\n      \"tool_configuration\": {\n        \"allowed_tools\": [\n          \"<string>\"\n        ],\n        \"enabled\": true\n      }\n    }\n  ],\n  \"output_config\": {\n    \"format\": {\n      \"schema\": \"<unknown>\",\n      \"type\": \"json_schema\"\n    },\n    \"task_budget\": {\n      \"total\": 123,\n      \"type\": \"tokens\",\n      \"remaining\": 123\n    }\n  },\n  \"output_format\": {\n    \"schema\": \"<unknown>\",\n    \"type\": \"json_schema\"\n  },\n  \"system\": \"<string>\",\n  \"thinking\": {\n    \"type\": \"enabled\"\n  },\n  \"tool_choice\": {\n    \"type\": \"auto\"\n  },\n  \"tools\": [\n    {\n      \"type\": \"browser_toolset_20260801\",\n      \"allowed_callers\": [],\n      \"cache_control\": {\n        \"type\": \"ephemeral\"\n      },\n      \"configs\": {\n        \"close_tab\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"double_click\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"file_upload\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"find\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"form_input\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"get_page_text\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"hold_key\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"hover\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"javascript_exec\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"key\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"left_click\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"left_click_drag\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"left_mouse_down\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"left_mouse_up\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"list_tabs\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"middle_click\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"mouse_move\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"navigate\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"new_tab\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"read_console\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"read_network\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"read_page\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"right_click\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"screenshot\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"scroll\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"scroll_to\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"switch_tab\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"triple_click\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"type\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"wait\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        },\n        \"zoom\": {\n          \"defer_loading\": true,\n          \"enabled\": true\n        }\n      }\n    }\n  ]\n}"

response = http.request(request)
puts response.read_body

{
  "context_management": {
    "original_input_tokens": 123
  },
  "input_tokens": 123
}

{
  "error": {
    "code": "<string>",
    "message": "<string>"
  }
}