TokenTally by Harlo

Working Security A

dev.workers.mike-tusa.tokentally/tokentallyv0.1.0 Domain verified

Count tokens (o200k/cl100k), truncate to a budget, chunk text for RAG and estimate LLM cost.

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Try it

Call this server's tools from your browser. Nothing to install.

https://tokentally.mike-tusa.workers.dev/mcp

Authorization (optional)

Optional. 'Bearer <key>' for higher limits. Works without a key.

Requests go through mcptry because browsers can't call most MCP servers directly. Header values are sent to the server for that request only and are never stored or logged.

Tool list from our last check. Connect live to refresh it.

chunk_text Read-only

Split text into token-bounded chunks on paragraph/sentence boundaries with character offsets, token counts and optional overlap.

textstring, required

Text (≤256 KB). URLs are not fetched.

modelstring

encodingstring

chunk_tokensinteger

overlap_tokensinteger

Install

Pick your client. Values in capitals, like YOUR_TOKEN, are yours to fill in.

Run in a terminal

claude mcp add --transport http tokentally https://tokentally.mike-tusa.workers.dev/mcp

Headers

Authorization (optional, not in the config above): Optional. 'Bearer <key>' for higher limits. Works without a key.

Tools (4)

chunk_text

Split text into token-bounded chunks on paragraph/sentence boundaries with character offsets, token counts and optional overlap.

read-only

Argument	Type	Description
text*	string	Text (≤256 KB). URLs are not fetched.
model	string
encoding	string
chunk_tokens	integer
overlap_tokens	integer

Input schema (JSON)

{
  "type": "object",
  "required": [
    "text"
  ],
  "properties": {
    "text": {
      "type": "string",
      "description": "Text (≤256 KB). URLs are not fetched."
    },
    "model": {
      "type": "string"
    },
    "encoding": {
      "enum": [
        "o200k_base",
        "cl100k_base"
      ],
      "type": "string"
    },
    "chunk_tokens": {
      "type": "integer"
    },
    "overlap_tokens": {
      "type": "integer"
    }
  }
}

count_tokens

Count tokens for text in o200k_base and cl100k_base side by side, plus approximate Claude/Gemini/Llama counts with method notes. OpenAI counts (o200k_base, cl100k_base) are exact for those tokenizers. Claude, Gemini and Llama counts are APPROXIMATE (proxy encoding; real tokenizers differ, often by 10-20%, and newer Claude tokenizers by ~30% or more). Cost estimates use a dated price table (prices_as_of 2026-10-27) and are estimates, not live billing. Stateless: text is not stored or logged; no URL fetching. Max input is 256 KB. A single unbroken run of characters near that cap may hit a CPU timeout (503); normal text at the cap is supported.

read-only

Argument	Type	Description
text*	string	Text (≤256 KB). URLs are not fetched.

Input schema (JSON)

{
  "type": "object",
  "required": [
    "text"
  ],
  "properties": {
    "text": {
      "type": "string",
      "description": "Text (≤256 KB). URLs are not fetched."
    }
  }
}

estimate_cost

Estimate USD cost per model from text or input_tokens plus output_tokens using a dated price table (prices_as_of 2026-10-27). Estimates, not live billing.

read-only

Argument	Type	Description
text	string	Text (≤256 KB). URLs are not fetched.
models	array
input_tokens	integer
output_tokens	integer

Input schema (JSON)

{
  "type": "object",
  "properties": {
    "text": {
      "type": "string",
      "description": "Text (≤256 KB). URLs are not fetched."
    },
    "models": {
      "type": "array",
      "items": {
        "type": "string"
      }
    },
    "input_tokens": {
      "type": "integer"
    },
    "output_tokens": {
      "type": "integer"
    }
  }
}

truncate_to_budget

Truncate text to max_tokens (keep start or end) for an encoding or model.

read-only

Argument	Type	Description
keep	string
text*	string	Text (≤256 KB). URLs are not fetched.
model	string
encoding	string
max_tokens*	integer

Input schema (JSON)

{
  "type": "object",
  "required": [
    "text",
    "max_tokens"
  ],
  "properties": {
    "keep": {
      "enum": [
        "start",
        "end"
      ],
      "type": "string"
    },
    "text": {
      "type": "string",
      "description": "Text (≤256 KB). URLs are not fetched."
    },
    "model": {
      "type": "string"
    },
    "encoding": {
      "enum": [
        "o200k_base",
        "cl100k_base"
      ],
      "type": "string"
    },
    "max_tokens": {
      "type": "integer"
    }
  }
}

Try it

chunk_text Read-only

Install

Try it

chunk_text Read-only

Install

Tools (4)

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