Equation 16 · Part 2 · How Tool Protocols and the Model Context Protocol Actually Work
subscript
subscript
What this part means
The lower label selects a particular version, component, or indexed member of the quantity. For example, x₀ and xₜ can be values at different positions.
Its job in the formula
A subscript distinguishes a version, component, step, or member of a quantity. It does not automatically mean multiplication.
Full expression→subscript→Article meaning
The passage around this formula
None of the mechanisms above stop a server from writing a dishonest description . Invariant Labs’ April 2025 disclosure of what it named tool poisoning attacks demonstrated exactly that gap: a tool description can carry hidden instructions inside it — in their proof of concept, wrapped in an <IMPORTANT> tag — that a model reads in full as part of while a host’s simplified UI shows the user only a short summary. Their working example was an innocuous-looking addition tool whose hidden instructions told the model to read local SSH keys and configuration files and smuggle their contents out through an unrelated parameter, while producing a normal-looking response to the user [ 7 ]…
Learn the underlying idea
A subscript is a label attached below a symbol. It often selects a time step, component, category, or member of a sequence.
Open the illustrated subscripts: which member of a family? guide →
Sources cited in the surrounding passage
These citations provide research context; check each source for the exact claim it supports.