{
  "id": "3b7988c12a167d47d1575b3bf5c28fdf56840e7e5af119869e9ad94138c8338d",
  "label": "estimate-tool-Read",
  "generatedAt": "2026-06-09T00:30:02.683Z",
  "url": "https://api.anthropic.com/v1/messages/count_tokens?beta=true",
  "headers": {
    "anthropic-beta": "claude-code-20250219,context-1m-2025-08-07,interleaved-thinking-2025-05-14,context-management-2025-06-27,prompt-caching-scope-2026-01-05,mid-conversation-system-2026-04-07,advisor-tool-2026-03-01,effort-2025-11-24,token-counting-2024-11-01",
    "anthropic-version": "2023-06-01",
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    "model": "claude-opus-4-8",
    "messages": [
      {
        "role": "user",
        "content": [
          {
            "type": "text",
            "text": "<system-reminder>\nAs you answer the user's questions, you can use the following context:\n# currentDate\nToday's date is 2026-06-08.\n\n      IMPORTANT: this context may or may not be relevant to your tasks. You should not respond to this context unless it is highly relevant to your task.\n</system-reminder>\n\n"
          },
          {
            "type": "text",
            "text": "say hi",
            "cache_control": {
              "type": "ephemeral"
            }
          },
          {
            "type": "text",
            "text": "{\"description\":\"Reads a file from the local filesystem.\\n\\n- `file_path` must be an absolute path.\\n- Reads up to 2000 lines by default.\\n- When you already know which part of the file you need, only read that part. This can be important for larger files.\\n- Results are returned using cat -n format, with line numbers starting at 1\\n- Reads images (PNG, JPG, …) and presents them visually. Reads PDFs via the `pages` parameter (e.g. \\\"1-5\\\", max 20 pages/request; required for PDFs over 10 pages). Reads Jupyter notebooks (.ipynb) as cells with outputs.\\n- Reading a directory, a missing file, or an empty file returns an error or system reminder rather than content.\\n- Do NOT re-read a file you just edited to verify — Edit/Write would have errored if the change failed, and the harness tracks file state for you.\",\"input_schema\":{\"$schema\":\"https://json-schema.org/draft/2020-12/schema\",\"additionalProperties\":false,\"properties\":{\"file_path\":{\"description\":\"The absolute path to the file to read\",\"type\":\"string\"},\"limit\":{\"description\":\"The number of lines to read. Only provide if the file is too large to read at once.\",\"exclusiveMinimum\":0,\"maximum\":9007199254740991,\"type\":\"integer\"},\"offset\":{\"description\":\"The line number to start reading from. Only provide if the file is too large to read at once\",\"maximum\":9007199254740991,\"minimum\":0,\"type\":\"integer\"},\"pages\":{\"description\":\"Page range for PDF files (e.g., \\\"1-5\\\", \\\"3\\\", \\\"10-20\\\"). Only applicable to PDF files. Maximum 20 pages per request.\",\"type\":\"string\"}},\"required\":[\"file_path\"],\"type\":\"object\"},\"name\":\"Read\"}"
          }
        ]
      },
      {
        "role": "system",
        "content": "The following skills are available for use with the Skill tool:\n\n- deep-research: \n- update-config: \n- keybindings-help: \n- verify: \n- code-review: \n- simplify: \n- fewer-permission-prompts: \n- loop: \n- claude-api: \n- run: \n- init: \n- review: \n- security-review: "
      }
    ],
    "thinking": {
      "type": "adaptive"
    },
    "output_config": {
      "effort": "high"
    },
    "system": [
      {
        "type": "text",
        "text": "x-anthropic-billing-header: cc_version=2.1.168.c27; cc_entrypoint=sdk-ts; cch=e5b75;"
      },
      {
        "type": "text",
        "text": "You are a Claude agent, built on Anthropic's Claude Agent SDK.",
        "cache_control": {
          "type": "ephemeral"
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      }
    ]
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  "bodyCanonicalSha256": "e6b05f85b69f308a0df3d617dd3320217fbcdb9dcdc4fea1840a9c11e6fd0b52"
}