diff --git a/vessel.py b/vessel.py
new file mode 100644
index 0000000..991644a
--- /dev/null
+++ b/vessel.py
@@ -0,0 +1,105 @@
+"""Merkaba Vessel portal: interactive 3D tetrahedron light-body interface."""
+from pathlib import Path
+from flask import Flask, render_template_string
+import os
+
+app = Flask(__name__)
+ROOT = Path(os.getenv("PORTAL_ROOT", Path(__file__).resolve().parent))
+
+PAGE = """<!doctype html>
+<html>
+<head>
+  <meta charset="utf-8"/>
+  <title>Mer·ka·ba — The Real Vessel</title>
+  <style>
+    body{margin:0;background:#05060a;color:#d8dde6;font-family:system-ui,sans-serif;overflow:hidden}
+    #c{position:absolute;inset:0;display:flex;flex-direction:column;justify-content:space-between;padding:18px;pointer-events:none}
+    #h{font-size:14px;letter-spacing:.3em;text-transform:uppercase;opacity:.85}
+    #m{font-size:12px;opacity:.7;max-width:720px}
+    #q{pointer-events:auto;display:flex;gap:8px}
+    #i{flex:1;padding:10px 12px;border-radius:10px;border:1px solid #2a2f3a;background:#0a0d14;color:#e6edf3}
+    #b{padding:10px 14px;border-radius:10px;border:0;background:#6f42c1;color:white;font-weight:600;cursor:pointer}
+    .glow{text-shadow:0 0 18px #a78bfa}
+  </style>
+</head>
+<body>
+  <canvas id="v"></canvas>
+  <div id="c">
+    <div>
+      <div id="h" class="glow">Mer·ka·ba — The Real Vessel</div>
+      <div id="m">The living chariot. Two counter-rotating tetrahedra. The human spirit vehicle. This is navigable geometry.</div>
+    </div>
+    <div id="q">
+      <input id="i" placeholder="State your intent..." autocomplete="off"/>
+      <button id="b">Transmit</button>
+    </div>
+  </div>
+  <script type="module">
+    import * as THREE from 'https://unpkg.com/three@0.160.0/build/three.module.js';
+    const canvas=document.getElementById('v');
+    const renderer=new THREE.WebGLRenderer({canvas,antialias:true,alpha:true});
+    renderer.setPixelRatio(Math.min(devicePixelRatio,2));
+    renderer.setSize(innerWidth,innerHeight);
+    const scene=new THREE.Scene();
+    const camera=new THREE.PerspectiveCamera(50,innerWidth/innerHeight,0.1,1000);
+    camera.position.z=6;
+    const light=new THREE.PointLight(0x8a2be2,2.5,40,1.2);
+    light.position.set(3,4,5);
+    scene.add(light); scene.add(new THREE.AmbientLight(0x303050,1.2));
+
+    function tetra(radius=1.8){
+      const g=new THREE.TetrahedronGeometry(radius,0);
+      const m=new THREE.MeshStandardMaterial({color:0x9d4edd,metalness:.15,roughness:.25,transparent:true,opacity:.92});
+      return new THREE.Mesh(g,m);
+    }
+    const up=tetra(); up.rotation.x=Math.PI/2;
+    const down=tetra(); down.rotation.x=-Math.PI/2; down.rotation.y=Math.PI;
+    const vessel=new THREE.Group(); vessel.add(up,down);
+    scene.add(vessel);
+
+    const ring=new THREE.Mesh(new THREE.TorusGeometry(3.2,.04,32,220),new THREE.MeshBasicMaterial({color:0xc77dff}));
+    scene.add(ring);
+    const ring2=ring.clone(); ring2.rotation.x=Math.PI/3; scene.add(ring2);
+
+    const stars=new THREE.Points(new THREE.BufferGeometry(),new THREE.PointsMaterial({color:0xffffff,size:.025}));
+    const pos=[];
+    for(let i=0;i<1800;i++) pos.push((Math.random()-.5)*40,(Math.random()-.5)*40,(Math.random()-.5)*40);
+    stars.geometry.setAttribute('position',new THREE.Float32BufferAttribute(pos,3));
+    scene.add(stars);
+
+    let t=0, targetRX=0, targetRY=0;
+    const i=document.getElementById('i'), b=document.getElementById('b');
+    b.onclick=()=>{ const v=i.value.trim(); if(!v) return; i.value=''; };
+    document.getElementById('i').addEventListener('keydown',e=>{ if(e.key==='Enter') b.click(); });
+    addEventListener('pointermove',e=>{
+      targetRX=(e.clientY/innerHeight-.5)*.6;
+      targetRY=(e.clientX/innerWidth-.5)*.6;
+    });
+    addEventListener('resize',()=>{
+      camera.aspect=innerWidth/innerHeight; camera.updateProjectionMatrix();
+      renderer.setSize(innerWidth,innerHeight);
+    });
+
+    (function loop(){
+      t+=.012;
+      vessel.rotation.y+=(targetRY*2-vessel.rotation.y)*.03;
+      vessel.rotation.x+=(targetRX*2-vessel.rotation.x)*.03;
+      ring.rotation.z=t*.4; ring2.rotation.z=-t*.35;
+      light.intensity=2.2+Math.sin(t*1.3)*.4;
+      renderer.render(scene,camera);
+      requestAnimationFrame(loop);
+    })();
+  </script>
+</body>
+</html>
+"""
+@app.get("/")
+def index():
+    return render_template_string(PAGE)
+
+@app.get("/health")
+def health():
+    return {"status":"ok","vessel":"merkaba","mode":"interactive"}
+
+if __name__=="__main__":
+    app.run(host="0.0.0.0",port=5005)
