diff --git a/index.bs b/index.bs
index 241bb2c..fc9e901 100644
--- a/index.bs
+++ b/index.bs
@@ -1775,11 +1775,11 @@ respective private browsing modes are safely exposed to [=agents=] and that thes
-**What:** Restrict the maximum amount of characters
+**What:** Restrict the maximum number of code points
**Threats addressed:** [[#metadata-description-attacks]]
-**How:** This restriction would not fully solve prompt injection attacks but helps shrink the possible universe of attacks, preventing longer prompts that leverage e.g. repetition and sockpuppetting [[SOCKPUPPETTING]] to convince agents of malicious tasks. The specification already implements a nominal size restriction of 128 characters for the tool {{ModelContextTool/name}} (see [[#supporting-concepts]]), but further work is needed to evaluate the right size limits for titles, names, and other inputs. See [Issue #73](https://github.com/webmachinelearning/webmcp/issues/73).
+**How:** This restriction would not fully solve prompt injection attacks but helps shrink the possible universe of attacks, preventing longer prompts that leverage e.g. repetition and sockpuppetting [[SOCKPUPPETTING]] to convince agents of malicious tasks. The specification already implements a nominal size restriction of 128 ASCII [=code points=] for the tool {{ModelContextTool/name}} (see [[#supporting-concepts]]), but further work is needed to evaluate the right size limits for titles, names, and other inputs. See [Issue #73](https://github.com/webmachinelearning/webmcp/issues/73).
Supporting interoperable probabilistic defense structures through shared attack eval datasets