US 12,670,045 B1

Code implemented tool calls

Gabriel Vergnaud, Paris (FR)

Assigned to Mistral AI, Paris (FR)

Filed by Mistral AI, Paris (FR)

Filed on Mar. 4, 2026, as Appl. No. 19/557,103.

Int. Cl. G06F 9/54 (2006.01)

CPC G06F 9/547 (2013.01)<br>20 Claims

1 . A method, comprising:receiving, at a server, a user request for execution of one or more tool calls;

generating, by a large language model (LLM), a code block in a programming language, the code block configured to encapsulate the one or more tool calls;

executing, by the server, the code block in a sandbox;

in response to obtaining a pending tool call, pausing execution of the code block;

transmitting the pending tool call to a client for execution;

receiving, from the client, a first result of the pending tool call;

resuming execution of the code block and substituting the first result of the pending tool call for the pending tool call in the code block; and

returning a second result of the executed code block to the LLM.