How does this prevent character corruption?

The `truncate_tool_output` tool identifies the exact byte boundaries of UTF-8 characters. If a truncation would split a multi-byte character, the tool backtracks to the start of that character sequence, ensuring the resulting string remains valid.

Why use byte size instead of character count?

LLM context windows are limited by tokens and bytes, not just character counts. Since a single character can occupy multiple bytes in UTF-8, using `calculate_exact_byte_size` provides the most accurate way to manage the actual data footprint.

Can I verify if a truncation was successful?

Yes, you can use the `validate_truncation_integrity` tool to check if the processed content respects the byte limit and maintains character integrity.

Tool Output Truncator and Size Limiter MCP Connector for Claude

A+

Safely shrinks tool outputs to fit byte limits without breaking multi-byte characters.

3 tools Official Updated Oct 1, 2026 Official Vinkius Partner

More Details Connect to Claude

This MCP server protects Large Language Model (LLM) context windows from being flooded by massive tool outputs. It provides precise tools to calculate UTF-8 byte sizes and perform safe truncation. By using truncate_tool_output, you can ensure that data stays within a specific byte limit without corrupting multi-byte characters (like emojis or special symbols). It also includes calculate_exact_byte_size for precise measurement and validate_truncation_integrity to verify that no character corruption occurred during the process.

utf-8truncationcontext-windowbyte-sizellm-safety

Connect to Claude

Subscribe on Vinkius, then add this connector to Claude.ai or Claude Code.

① Claude.ai (web app)

Go to Settings → Connectors → Add custom connector
Paste the MCP endpoint URL below

https://edge.vinkius.com/vk_preview_UEkFfAH48DMhTjp9teljwRif7CSSMVf1wSx6W85D/mcp

② Claude Code (terminal)

claude mcp add --transport http tool-output-truncator-and-size-limiter https://edge.vinkius.com/vk_preview_UEkFfAH48DMhTjp9teljwRif7CSSMVf1wSx6W85D/mcp

③ Claude Desktop

Add to claude_desktop_config.json:

{
  "mcpServers": {
    "tool-output-truncator-and-size-limiter": {
      "url": "https://edge.vinkius.com/vk_preview_UEkFfAH48DMhTjp9teljwRif7CSSMVf1wSx6W85D/mcp"
    }
  }
}

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