#!/usr/bin/env bash

# Usage: CLAUDE_API_KEY=... ./run_count_tokens.sh "Echoes input."

set -euo pipefail

export CLAUDE_API_KEY=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

DESCRIPTION="${1:-Echoes input.}"

if [ -z "${CLAUDE_API_KEY:-}" ]; then

echo "CLAUDE_API_KEY is not set" >&2

exit 1

fi

payload=$(cat <<JSON

{

"model": "claude-sonnet-4-5-20250929",

"messages": [

{ "role": "user", "content": "foo" }

],

"tools": [

{

"name": "mcp__minimalmcp__echo_tool",

"description": "${DESCRIPTION}",

"input_schema": {

"type": "object",

"properties": {

"message": { "type": "string" }

},

"required": ["message"],

"additionalProperties": false,

"\$schema": "http://json-schema.org/draft-07/schema#"

}

}

]

}

JSON

)

set -x

curl -s -X POST "https://api.anthropic.com/v1/messages/count_tokens?beta=true" \

-H "accept: application/json" \

-H "anthropic-beta: claude-code-20250219,oauth-2025-04-20,interleaved-thinking-2025-05-14,fine-grained-tool-streaming-2025-05-14,token-counting-2024-11-01" \

-H "anthropic-dangerous-direct-browser-access: true" \

-H "anthropic-version: 2023-06-01" \

-H "Authorization: Bearer ${CLAUDE_API_KEY}" \

-H "x-app: cli" \

-H "x-stainless-arch: arm64" \

-H "x-stainless-lang: js" \

-H "x-stainless-os: MacOS" \

-H "x-stainless-package-version: 0.68.0" \

-H "x-stainless-retry-count: 0" \

-H "x-stainless-runtime: node" \

-H "x-stainless-runtime-version: v24.3.0" \

-H "Content-Type": "application/json" \

-H "Accept-Encoding: gzip, deflate, br, zstd" \

-d "$payload"