Token Counter for ChatGPT

com.apished/token-counter

Counts tokens under OpenAI-compatible (tiktoken) encodings, by model or encoding name.

client:ChatGPT transport:streamable-http tools:1

Install Token Counter in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://apished.com/mcp/v1/tokens

Custom connectors are a paid-plan feature and take a remote URL only. ChatGPT cannot run a packaged server locally. ChatGPT docs