Tool-result size governor for MCP for ChatGPT

com.textforagents/tool-result-size-governor

Per-route output budgets for MCP: windowing, spill artifacts, signed omission receipts.

client:ChatGPT transport:streamable-http tools:3

Install Tool-result size governor for MCP in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://textforagents.com/products/tool-result-size-governor/mcp

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