A thread you can test
Tool System
4 notes move from the word to a real choice at work — understand it first, then decide whether to use it.
Each note stands alone, or becomes the next step in this thread.
THE QUESTION THIS PAGE ANSWERS
ANSWER FIRSTWhat is Tool System, and which AI decisions does it change?
A three-stage line from pre-execute to post-execute — Guard can only tighten, never allow This page keeps the related concepts, common mistakes, and practical notes in one reading thread.
First decide whether you are blocked by a definition, a choice, or verification; then choose the closest of the 4 notes below.
Start with “Tool Execution Pipeline: Three-Stage Cascade & Monotone Guard,” then restate the conclusion using your own task.
Do not treat every method in a topic as interchangeable. The answer changes with the input, risk, and acceptance bar.
THIS QUESTION THREAD
Put the word back inside the choice it changes.
Tool Execution Pipeline: Three-Stage Cascade & Monotone Guard
A three-stage line from pre-execute to post-execute — Guard can only tighten, never allow
Tool Output Contract: Value Separated from Display
Same result — what the model sees and what people see can differ
File-Edit Engineering: Read Before Write
The read / edit / write trio — unread files can’t be edited
DSH-Only Tool Surface: terminal / lsp / jobs
What the tools others lack each solve