diff --git a/site/harnesses/index.html b/site/harnesses/index.html
index 3a49cde..d22391a 100644
--- a/site/harnesses/index.html
+++ b/site/harnesses/index.html
@@ -69,7 +69,7 @@ <h1>Harnesses</h1>
           <span class="harness-logo__label">Muse</span>
         </a>
         <a class="harness-logo" href="#claude">
-          <span class="harness-logo__icon" style="--logo: url('../logos/claude.svg')" aria-hidden="true"></span>
+          <span class="harness-logo__icon" style="--logo: url('../logos/claude.svg?v=20260904-claude')" aria-hidden="true"></span>
           <span class="harness-logo__label">Claude</span>
         </a>
       </nav>
@@ -224,7 +224,7 @@ <h3>Muse</h3>
 
           <article class="harness-card" id="claude">
             <header class="harness-card__head">
-              <span class="harness-card__logo" style="--logo: url('../logos/claude.svg')" aria-hidden="true"></span>
+              <span class="harness-card__logo" style="--logo: url('../logos/claude.svg?v=20260904-claude')" aria-hidden="true"></span>
               <div class="harness-card__titles">
                 <h3>Claude</h3>
                 <span class="harness-card__pill"><code>--runtime claude</code></span>
diff --git a/site/index.html b/site/index.html
index 978aea0..ffcb8eb 100644
--- a/site/index.html
+++ b/site/index.html
@@ -317,7 +317,7 @@ <h1>Finally, you're not the verify step.</h1>
             <span class="harness-logo__label">Muse</span>
           </a>
           <a class="harness-logo" href="harnesses/#claude">
-            <span class="harness-logo__icon" style="--logo: url('logos/claude.svg')" aria-hidden="true"></span>
+            <span class="harness-logo__icon" style="--logo: url('logos/claude.svg?v=20260904-claude')" aria-hidden="true"></span>
             <span class="harness-logo__label">Claude</span>
           </a>
         </div>
diff --git a/site/logos/README.md b/site/logos/README.md
index 43a6842..8afa16f 100644
--- a/site/logos/README.md
+++ b/site/logos/README.md
@@ -14,6 +14,6 @@ Vendored SVG marks for the “works with” row. Sources:
 | `opencode.svg` | [OpenCode brand](https://opencode.ai/brand) — `anomalyco/opencode` `opencode-logo-light-square.svg` |
 | `pi.svg` | [Pi website](https://github.com/earendil-works/pi-website) `src/logo.svg` |
 | `meta.svg` | [Simple Icons](https://github.com/simple-icons/simple-icons) (CC0) — Muse Code / Meta |
-| `claude.svg` | [Simple Icons](https://github.com/simple-icons/simple-icons) (CC0) — Claude Code / Anthropic |
+| `claude.svg` | [Simple Icons](https://github.com/simple-icons/simple-icons) `claude` slug (CC0) — Claude starburst symbol (not Anthropic corporate A) |
 
 Simple Icons and OpenCode mark recolored with `currentColor` for the dark landing page.
diff --git a/site/logos/claude.svg b/site/logos/claude.svg
index 8d6dd06..9cc770b 100644
--- a/site/logos/claude.svg
+++ b/site/logos/claude.svg
@@ -1 +1 @@
-<svg role="img" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg" fill="currentColor"><title>Anthropic</title><path d="M17.3041 3.541h-3.6718l6.696 16.918H24Zm-10.6082 0L0 20.459h3.7442l1.3693-3.5527h7.0052l1.3693 3.5528h3.7442L10.5363 3.5409Zm-.3712 10.2232 2.2914-5.9456 2.2914 5.9456Z"/></svg>
+<svg role="img" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg" fill="currentColor"><title>Claude</title><path d="m4.7144 15.9555 4.7174-2.6471.079-.2307-.079-.1275h-.2307l-.7893-.0486-2.6956-.0729-2.3375-.0971-2.2646-.1214-.5707-.1215-.5343-.7042.0546-.3522.4797-.3218.686.0608 1.5179.1032 2.2767.1578 1.6514.0972 2.4468.255h.3886l.0546-.1579-.1336-.0971-.1032-.0972L6.973 9.8356l-2.55-1.6879-1.3356-.9714-.7225-.4918-.3643-.4614-.1578-1.0078.6557-.7225.8803.0607.2246.0607.8925.686 1.9064 1.4754 2.4893 1.8336.3643.3035.1457-.1032.0182-.0728-.164-.2733-1.3539-2.4467-1.445-2.4893-.6435-1.032-.17-.6194c-.0607-.255-.1032-.4674-.1032-.7285L6.287.1335 6.6997 0l.9957.1336.419.3642.6192 1.4147 1.0018 2.2282 1.5543 3.0296.4553.8985.2429.8318.091.255h.1579v-.1457l.1275-1.706.2368-2.0947.2307-2.6957.0789-.7589.3764-.9107.7468-.4918.5828.2793.4797.686-.0668.4433-.2853 1.8517-.5586 2.9021-.3643 1.9429h.2125l.2429-.2429.9835-1.3053 1.6514-2.0643.7286-.8196.85-.9046.5464-.4311h1.0321l.759 1.1293-.34 1.1657-1.0625 1.3478-.8804 1.1414-1.2628 1.7-.7893 1.36.0729.1093.1882-.0183 2.8535-.607 1.5421-.2794 1.8396-.3157.8318.3886.091.3946-.3278.8075-1.967.4857-2.3072.4614-3.4364.8136-.0425.0304.0486.0607 1.5482.1457.6618.0364h1.621l3.0175.2247.7892.522.4736.6376-.079.4857-1.2142.6193-1.6393-.3886-3.825-.9107-1.3113-.3279h-.1822v.1093l1.0929 1.0686 2.0035 1.8092 2.5075 2.3314.1275.5768-.3218.4554-.34-.0486-2.2039-1.6575-.85-.7468-1.9246-1.621h-.1275v.17l.4432.6496 2.3436 3.5214.1214 1.0807-.17.3521-.6071.2125-.6679-.1214-1.3721-1.9246L14.38 17.959l-1.1414-1.9428-.1397.079-.674 7.2552-.3156.3703-.7286.2793-.6071-.4614-.3218-.7468.3218-1.4753.3886-1.9246.3157-1.53.2853-1.9004.17-.6314-.0121-.0425-.1397.0182-1.4328 1.9672-2.1796 2.9446-1.7243 1.8456-.4128.164-.7164-.3704.0667-.6618.4008-.5889 2.386-3.0357 1.4389-1.882.929-1.0868-.0062-.1579h-.0546l-6.3385 4.1164-1.1293.1457-.4857-.4554.0608-.7467.2307-.2429 1.9064-1.3114Z"/></svg>