diff --git a/web/workspace/src/lib/workspace/api/runtime-management.ts b/web/workspace/src/lib/workspace/api/runtime-management.ts
index ac15d012..8a086e4e 100644
--- a/web/workspace/src/lib/workspace/api/runtime-management.ts
+++ b/web/workspace/src/lib/workspace/api/runtime-management.ts
@@ -1,5 +1,6 @@
 import type {
   Diagnostic,
+  CreateRemoteRuntimeRequest,
   PutRuntimeTrustKeyRequest,
   RevokeRuntimeTrustKeyRequest,
   RuntimeIdentityAuthority,
@@ -14,6 +15,9 @@ import type {
   RuntimeTrustKeyRevealResponse,
   RuntimeTrustKeyState,
   RuntimeTrustKeyStatus,
+  WorkspaceRuntimeAuthenticationMode,
+  WorkspaceRuntimeBindingState,
+  WorkspaceRuntimeBindingSummary,
   WorkspaceRuntimeDetail,
   WorkspaceRuntimeResource,
 } from "$lib/generated/workspace-api.ts";
@@ -67,6 +71,15 @@ const CONFLICT_KINDS = new Set<RuntimeTrustConflictKind>([
   "stale_revision",
   "fingerprint_in_use",
 ]);
+const BINDING_STATES = new Set<WorkspaceRuntimeBindingState>([
+  "configured",
+  "verified",
+  "revoked",
+]);
+const AUTHENTICATION_MODES = new Set<WorkspaceRuntimeAuthenticationMode>([
+  "legacy_server_issuer",
+  "workspace_identity",
+]);
 
 const encoder = new TextEncoder();
 type JsonObject = Record<string, unknown>;
@@ -286,6 +299,54 @@ function runtimeSource(value: unknown, path: string): RuntimeSourceSummary {
   };
 }
 
+function runtimeBinding(
+  value: unknown,
+  path: string,
+): WorkspaceRuntimeBindingSummary {
+  const item = object(value, path);
+  exactKeys(
+    item,
+    ["state", "authentication_mode", "revision"],
+    ["workspace_key_id", "workspace_key_generation"],
+    path,
+  );
+  const authenticationMode = enumValue(
+    item.authentication_mode,
+    `${path}.authentication_mode`,
+    AUTHENTICATION_MODES,
+  );
+  const workspaceKeyId = optionalNullableString(
+    item.workspace_key_id,
+    `${path}.workspace_key_id`,
+    LIMITS.idBytes,
+  );
+  const workspaceKeyGeneration = optionalNullableRevision(
+    item.workspace_key_generation,
+    `${path}.workspace_key_generation`,
+  );
+  if (
+    authenticationMode === "workspace_identity" &&
+    (workspaceKeyId == null || workspaceKeyGeneration == null)
+  ) {
+    return fail(path, "requires Workspace signing key identity metadata");
+  }
+  if (
+    authenticationMode === "legacy_server_issuer" &&
+    (workspaceKeyId != null || workspaceKeyGeneration != null)
+  ) {
+    return fail(path, "must not attach Workspace key metadata to legacy authority");
+  }
+  return {
+    state: enumValue(item.state, `${path}.state`, BINDING_STATES),
+    authentication_mode: authenticationMode,
+    revision: safeRevision(item.revision, `${path}.revision`),
+    ...(workspaceKeyId === undefined ? {} : { workspace_key_id: workspaceKeyId }),
+    ...(workspaceKeyGeneration === undefined
+      ? {}
+      : { workspace_key_generation: workspaceKeyGeneration }),
+  };
+}
+
 function runtimeManagement(
   value: unknown,
   path: string,
@@ -300,9 +361,12 @@ function runtimeManagement(
       "endpoint_configured",
       "token_ref_configured",
     ],
-    [],
+    ["binding"],
     path,
   );
+  const binding = item.binding == null
+    ? undefined
+    : runtimeBinding(item.binding, `${path}.binding`);
   return {
     built_in: boolean(item.built_in, `${path}.built_in`),
     config_managed: boolean(item.config_managed, `${path}.config_managed`),
@@ -315,6 +379,7 @@ function runtimeManagement(
       item.token_ref_configured,
       `${path}.token_ref_configured`,
     ),
+    ...(binding === undefined ? {} : { binding }),
   };
 }
 
@@ -713,6 +778,30 @@ async function finishMutation(
   return detail;
 }
 
+export async function createRemoteRuntime(
+  workspaceId: string,
+  request: CreateRemoteRuntimeRequest,
+  fetchImpl: typeof fetch = fetch,
+): Promise<WorkspaceRuntimeResource> {
+  const response = await fetchImpl(
+    workspaceApiPath(workspaceId, "/runtimes"),
+    {
+      method: "POST",
+      headers: { "content-type": "application/json" },
+      body: JSON.stringify(request),
+    },
+  );
+  const payload = await readBoundedJson(response);
+  if (!response.ok) throw requestErrorFrom(payload, response.status);
+  const runtime = runtimeResource(payload, "Runtime create response");
+  if (runtime.runtime_id !== request.public_bundle.identity_id) {
+    throw new RuntimeTrustRequestError(
+      "Runtime create response did not match the submitted public bundle",
+    );
+  }
+  return runtime;
+}
+
 export async function revealRuntimeTrustKey(
   workspaceId: string,
   runtimeId: string,
diff --git a/web/workspace/src/routes/w/[workspaceId]/settings/runtimes/+page.svelte b/web/workspace/src/routes/w/[workspaceId]/settings/runtimes/+page.svelte
index 35c87b2c..25e022e4 100644
--- a/web/workspace/src/routes/w/[workspaceId]/settings/runtimes/+page.svelte
+++ b/web/workspace/src/routes/w/[workspaceId]/settings/runtimes/+page.svelte
@@ -2,14 +2,21 @@
   import { invalidateAll } from '$app/navigation';
   import type {
     RuntimeConnectionTestResponse,
+    RuntimePublicIdentityBundle,
     WorkspaceRuntimeResource,
   } from '$lib/generated/workspace-api';
+  import {
+    createRemoteRuntime,
+    RuntimeTrustRequestError,
+  } from '$lib/workspace/api/runtime-management';
   import { testRuntimeConnection } from '$lib/workspace/api/runtime-connection';
-  import { workspaceApiPath } from '$lib/workspace/api/http';
   import type { PageProps } from './$types';
 
+  const runtimeBundlePlaceholder =
+    '{"identity_id":"team-runtime","public_key":"yoi-ed25519-pub:v1:..."}';
+
   let { data }: PageProps = $props();
-  let runtimeId = $state('');
+  let runtimePublicBundle = $state('');
   let displayName = $state('');
   let endpoint = $state('');
   let showAddRuntime = $state(false);
@@ -46,11 +53,33 @@
     return 'Observed';
   }
 
-  async function responseError(response: Response): Promise<string> {
-    const payload = await response.json().catch(() => null) as
-      | { message?: string; error?: string }
-      | null;
-    return payload?.message ?? payload?.error ?? `Request failed (${response.status})`;
+  function parseRuntimePublicBundle(value: string): RuntimePublicIdentityBundle {
+    let parsed: unknown;
+    try {
+      parsed = JSON.parse(value);
+    } catch {
+      throw new Error('Runtime public bundle must be valid JSON');
+    }
+    if (typeof parsed !== 'object' || parsed === null || Array.isArray(parsed)) {
+      throw new Error('Runtime public bundle must be a JSON object');
+    }
+    const item = parsed as Record<string, unknown>;
+    if (
+      Object.keys(item).length !== 2 ||
+      typeof item.identity_id !== 'string' ||
+      item.identity_id.length === 0 ||
+      typeof item.public_key !== 'string' ||
+      item.public_key.length === 0
+    ) {
+      throw new Error('Runtime public bundle must contain only identity_id and public_key');
+    }
+    return { identity_id: item.identity_id, public_key: item.public_key };
+  }
+
+  function workspacePublicBundle(): string {
+    return data.signingIdentity?.public_bundle
+      ? JSON.stringify(data.signingIdentity.public_bundle, null, 2)
+      : '';
   }
 
   async function addRuntime(event: SubmitEvent): Promise<void> {
@@ -58,23 +87,22 @@
     requestError = null;
     busyRuntimeId = 'create';
     try {
-      const response = await fetch(workspaceApiPath(data.workspaceId, '/runtimes'), {
-        method: 'POST',
-        headers: { 'content-type': 'application/json' },
-        body: JSON.stringify({
-          runtime_id: runtimeId,
-          display_name: displayName || null,
-          endpoint,
-        }),
+      const publicBundle = parseRuntimePublicBundle(runtimePublicBundle);
+      await createRemoteRuntime(data.workspaceId, {
+        public_bundle: publicBundle,
+        display_name: displayName || null,
+        endpoint,
+        expected_revision: null,
       });
-      if (!response.ok) throw new Error(await responseError(response));
-      runtimeId = '';
+      runtimePublicBundle = '';
       displayName = '';
       endpoint = '';
       showAddRuntime = false;
       await invalidateAll();
     } catch (error) {
-      requestError = error instanceof Error ? error.message : String(error);
+      requestError = error instanceof RuntimeTrustRequestError || error instanceof Error
+        ? error.message
+        : String(error);
     } finally {
       busyRuntimeId = null;
     }
@@ -116,9 +144,16 @@
     <form class="settings-runtime-form" onsubmit={addRuntime}>
       <h2>Add remote Runtime</h2>
       <div class="settings-form-grid">
-        <label>
-          Runtime ID
-          <input bind:value={runtimeId} required autocomplete="off" />
+        <label class="settings-form-wide">
+          Runtime public bundle
+          <small>Run <code>yoi-runtime identity show --json</code> on the Runtime host and paste the result.</small>
+          <textarea
+            bind:value={runtimePublicBundle}
+            required
+            rows="5"
+            spellcheck="false"
+            placeholder={runtimeBundlePlaceholder}
+          ></textarea>
         </label>
         <label>
           Display name
@@ -129,6 +164,24 @@
           <input bind:value={endpoint} type="url" required placeholder="https://runtime.example" />
         </label>
       </div>
+      <section class="settings-runtime-trust-instructions" aria-labelledby="runtime-trust-heading">
+        <h3 id="runtime-trust-heading">Trust this Workspace on the Runtime</h3>
+        {#if data.signingIdentityError}
+          <p class="section-state error">{data.signingIdentityError}</p>
+        {:else if data.signingIdentity?.public_bundle}
+          <p>
+            Save this public bundle as <code>workspace-public-bundle.json</code> on the Runtime host.
+            It contains no private key material.
+          </p>
+          <pre>{workspacePublicBundle()}</pre>
+          <pre>yoi-runtime trust-workspace add --bundle workspace-public-bundle.json</pre>
+          <p>
+            Runtime registration remains <code>configured</code> until authenticated verification is completed.
+          </p>
+        {:else}
+          <p class="section-state">Loading Workspace public identity…</p>
+        {/if}
+      </section>
       <div class="settings-action-row">
         <button type="submit" disabled={busyRuntimeId !== null}>Add Runtime</button>
         <button type="button" disabled={busyRuntimeId !== null} onclick={() => showAddRuntime = false}>
@@ -174,7 +227,9 @@
                 <small><code>{runtime.runtime_id}</code></small>
               </td>
               <td>{runtime.kind}</td>
-              <td>{runtime.status}</td>
+              <td>
+                {runtime.management?.binding?.state ?? runtime.status}
+              </td>
               <td>{runtimePlatform(runtime)}</td>
               <td>{managementLabel(runtime)}</td>
               <td>
@@ -184,14 +239,16 @@
               </td>
               <td>
                 <div class="settings-action-row">
-                  {#if runtime.management?.config_managed}
+                  {#if runtime.management?.config_managed && runtime.management.binding?.state === 'verified'}
                     <button
                       type="button"
                       disabled={busyRuntimeId !== null}
                       onclick={() => testRuntime(runtime)}
                     >Test</button>
                   {/if}
-                  {#if !runtime.management?.config_managed}
+                  {#if runtime.management?.binding?.state === 'configured'}
+                    <span class="settings-muted-action">Verification required</span>
+                  {:else if !runtime.management?.config_managed}
                     <span class="settings-muted-action">Test unavailable</span>
                   {/if}
                 </div>
diff --git a/web/workspace/src/routes/w/[workspaceId]/settings/runtimes/+page.ts b/web/workspace/src/routes/w/[workspaceId]/settings/runtimes/+page.ts
index cf7f727b..37ed3880 100644
--- a/web/workspace/src/routes/w/[workspaceId]/settings/runtimes/+page.ts
+++ b/web/workspace/src/routes/w/[workspaceId]/settings/runtimes/+page.ts
@@ -1,5 +1,6 @@
 import { loadJson, workspaceApiPath } from "$lib/workspace/api/http";
 import { parseWorkspaceRuntimeList } from "$lib/workspace/api/runtime-management";
+import { parseWorkspaceSigningIdentityResponse } from "$lib/workspace/settings/profile-api";
 import type { PageLoad } from "./$types";
 
 export const load: PageLoad = async ({ fetch, params }) => {
@@ -16,9 +17,24 @@ export const load: PageLoad = async ({ fetch, params }) => {
     },
   );
 
+  const signingIdentity = await loadJson(
+    fetch,
+    workspaceApiPath(params.workspaceId, "/signing-identity"),
+    undefined,
+    (value) => {
+      const response = parseWorkspaceSigningIdentityResponse(value);
+      if (response.identity.workspace_id !== params.workspaceId) {
+        throw new Error("Workspace signing identity did not match the route");
+      }
+      return response;
+    },
+  );
+
   return {
     workspaceId: params.workspaceId,
     runtimes: runtimes.data,
     runtimesError: runtimes.error,
+    signingIdentity: signingIdentity.data,
+    signingIdentityError: signingIdentity.error,
   };
 };
diff --git a/web/workspace/src/routes/w/[workspaceId]/settings/runtimes/[runtimeId]/+page.svelte b/web/workspace/src/routes/w/[workspaceId]/settings/runtimes/[runtimeId]/+page.svelte
index bceedc8f..c4901da5 100644
--- a/web/workspace/src/routes/w/[workspaceId]/settings/runtimes/[runtimeId]/+page.svelte
+++ b/web/workspace/src/routes/w/[workspaceId]/settings/runtimes/[runtimeId]/+page.svelte
@@ -315,7 +315,10 @@
         <div><dt>Kind</dt><dd>{runtime.kind}</dd></div>
         <div><dt>Endpoint</dt><dd>{detail.endpoint ?? 'Not configured'}</dd></div>
         <div><dt>Status</dt><dd>{runtime.status}</dd></div>
-        <div><dt>Binding status</dt><dd>{trust.status}</dd></div>
+        <div><dt>Relationship state</dt><dd>{runtime.management.binding?.state ?? 'Not configured'}</dd></div>
+        <div><dt>Authentication mode</dt><dd>{runtime.management.binding?.authentication_mode ?? '—'}</dd></div>
+        <div><dt>Workspace signing key</dt><dd><code>{runtime.management.binding?.workspace_key_id ?? '—'}</code></dd></div>
+        <div><dt>Runtime key status</dt><dd>{trust.status}</dd></div>
         <div><dt>Fingerprint</dt><dd><code>{trust.fingerprint ?? '—'}</code></dd></div>
         <div><dt>Revision</dt><dd>{trust.revision?.toString() ?? '—'}</dd></div>
         <div><dt>Created</dt><dd>{formatTimestamp(trust.created_at)}</dd></div>
diff --git a/web/workspace/tests/runtime-management.test.ts b/web/workspace/tests/runtime-management.test.ts
index 3d5c83b6..948346b5 100644
--- a/web/workspace/tests/runtime-management.test.ts
+++ b/web/workspace/tests/runtime-management.test.ts
@@ -39,6 +39,13 @@ function runtime() {
       removable: false,
       endpoint_configured: true,
       token_ref_configured: false,
+      binding: {
+        state: "verified",
+        authentication_mode: "workspace_identity",
+        revision: 3,
+        workspace_key_id: "WK-1",
+        workspace_key_generation: 1,
+      },
     },
     runtime_id: "arcadia",
     label: "Arcadia",
@@ -95,6 +102,11 @@ Deno.test("Runtime list and detail parsers return generated Runtime DTO shapes",
     "Runtime ID was not preserved",
   );
 
+  assert(
+    list.items[0]?.management.binding?.state === "verified",
+    "binding state was not preserved",
+  );
+
   const parsed = parseWorkspaceRuntimeDetail(detail());
   assert(
     parsed.trust_key.revision === 3,
@@ -106,6 +118,20 @@ Deno.test("Runtime list and detail parsers return generated Runtime DTO shapes",
   );
 });
 
+Deno.test("Runtime management parser rejects Workspace identity bindings without key metadata", () => {
+  const payload = detail();
+  const binding = payload.runtime.management.binding as Partial<
+    typeof payload.runtime.management.binding
+  >;
+  delete binding.workspace_key_id;
+  delete binding.workspace_key_generation;
+  binding.state = "configured";
+  assertThrows(
+    () => parseWorkspaceRuntimeDetail(payload),
+    "requires Workspace signing key identity metadata",
+  );
+});
+
 Deno.test("Runtime validators reject unknown object keys and enum variants", () => {
   assertThrows(
     () => parseWorkspaceRuntimeDetail({ ...detail(), head_tree: "stale" }),