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Sandesh Bagmare's avatar

I might sound naive sorry for that but genuinely want to learn this, could you help me understand

When an MCP tool or API call returns a large payload — say, 1000 data points intended for chart rendering or analysis — how is that data handled in the context window?

Specifically:

1. Does the full tool result get injected verbatim into the context, consuming tokens proportionally to the payload size?

2. Or is it expected for claude to have any built-in summarization/truncation layer that condenses large tool responses before they're counted against the context limit?bloa 3. As an architectural consideration:: is it better to have the MCP server return raw data (and let the client/Claude process it), or should the server return a pre-rendered artifact but in that case would other ai tools accepttto show it..

John Tay's avatar

Yes, the full result gets pushed into Claude's context window verbatim. You can summarise or truncate after the fact, but the tokens are already consumed by then.