diff --git a/README.md b/README.md
index e5d25bb..bf7cf8a 100644
--- a/README.md
+++ b/README.md
@@ -23,6 +23,11 @@
   <img src="https://raw.githubusercontent.com/danielgaskins/mendmark/main/docs/assets/mendmark-readme-hero.svg" width="100%" alt="Mendmark changes one part of a passing agent trace, reruns existing evaluators, and identifies killed faults and surviving blind spots.">
 </p>
 
+<p align="center">
+  Created by <a href="https://danielgaskins.com/">Daniel Gaskins</a> ·
+  <a href="https://danielgaskins.com/agent-eval-mutation-testing.html">Read the mutation-testing field note</a>
+</p>
+
 Your agent tests can all pass while an invoice is paid twice, access is granted
 without authority, or a required tool action silently disappears. Mendmark tests
 the tests themselves: it plants one controlled fault, runs the same evaluators
diff --git a/pyproject.toml b/pyproject.toml
index bfc47da..75ad85a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -26,6 +26,8 @@ classifiers = [
 
 [project.urls]
 Homepage = "https://github.com/danielgaskins/mendmark"
+Creator = "https://danielgaskins.com/"
+"Field Note" = "https://danielgaskins.com/agent-eval-mutation-testing.html"
 Repository = "https://github.com/danielgaskins/mendmark"
 Issues = "https://github.com/danielgaskins/mendmark/issues"
 Changelog = "https://github.com/danielgaskins/mendmark/blob/main/CHANGELOG.md"