diff --git a/fetch.bs b/fetch.bs
index 7e24ae7c3..393d9dc3e 100644
--- a/fetch.bs
+++ b/fetch.bs
@@ -109,6 +109,12 @@ urlPrefix:https://tc39.es/ecma262/#;type:dfn;spec:ecma-262
         "href": "https://datatracker.ietf.org/doc/html/draft-ietf-dnsop-svcb-https",
         "publisher": "IETF",
         "title": "Service binding and parameter specification via the DNS (DNS SVCB and HTTPS RRs)"
+    },
+    "WEBDRIVER-BIDI": {
+        "authors": [],
+        "href": "https://w3c.github.io/webdriver-bidi/",
+        "publisher": "W3C",
+        "title": "WebDriver BiDi"
     }
 }
 </pre>
@@ -2072,6 +2078,11 @@ Unless stated otherwise, it is false.
 
 <p class=note>This is for exclusive use by HTML's navigate algorithm. [[!HTML]]
 
+<p>A <a for=/>request</a> has an associated <dfn export for=request>navigation id</dfn>.
+Unless stated otherwise, it is null.
+
+<p class=note>This is for exclusive use by HTML's navigate algorithm. [[!HTML]]
+
 <p>A <a for=/>request</a> has an associated boolean <dfn export for=request>render-blocking</dfn>.
 Unless stated otherwise, it is false.
 
@@ -2113,6 +2124,13 @@ otherwise, it is unset.
 <a for=request>done flag</a>, and <a for=request>timing allow failed flag</a> are used as
 bookkeeping details by the <a for=/>fetch</a> algorithm.
 
+<p>A <a for=/>request</a> has an associated
+<dfn export for=request id=concept-request-id>request id</dfn> which is a unique
+string automatically set when the <a for=/>request</a> is created.
+
+Note: the [=request id=] is used by WebDriver-BiDi. When a request is [=request/cloned=],
+the created request gets a unique [=request id=]. [[!WEBDRIVER-BIDI]]
+
 <hr>
 
 <p>A <dfn export>subresource request</dfn> is a <a for=/>request</a>
@@ -4712,6 +4730,11 @@ steps:
      <a for=request>URL</a>, <var>fetchParams</var>'s <a for="fetch params">request</a>'s
      <a for=request>initiator type</a>, <var>global</var>, <var>cacheState</var>,
      <var>bodyInfo</var>, and <var>responseStatus</var>.
+
+     <li><p>If <var>response</var> is a <a>network error</a>, run
+     the <a>WebDriver BiDi fetch error</a> steps with <var>request</var>. Otherwise
+     run the <a>WebDriver BiDi response completed</a> steps with
+     <var>request</var> and <var>response</var>.
     </ol>
 
    <li>
@@ -4967,6 +4990,13 @@ these steps:
      <a>filtered response</a>, and to <var>response</var>'s
      <a for="filtered response">internal response</a> otherwise.
 
+     <!-- the serviceworker spec is responsible for emmitting the WebDriver BiDi
+     request events in this case. That's necessary to ensure that the events are
+     only generated if the serviceworker will handle the fetch, and to get the
+     correct event ordering in the case of network fallback -->
+     <li><p>Run the [=WebDriver BiDi response started=] steps with
+     <var>request</var> and <var>response</var>.
+
      <li>
       <p>If one of the following is true
 
@@ -5483,6 +5513,10 @@ run these steps:
     <p class=note>This intentionally does not depend on <var>httpRequest</var>'s
     <a for=request>credentials mode</a>.
 
+   <!-- After this point the request is not further modified before being either
+   retrieved from the cache or sent -->
+   <li><p>Run the <a>WebDriver BiDi before request sent</a> steps with <a>request</a>.
+
    <li><p>Set <var>httpCache</var> to the result of <a>determining the HTTP cache partition</a>,
    given <var>httpRequest</var>.
 
@@ -5578,6 +5612,8 @@ run these steps:
  <li><p><a>If aborted</a>, then return the <a for=/>appropriate network error</a> for
  <var>fetchParams</var>.
 
+ <li><p>If <var>response</var> is not null, run the <a>WebDriver BiDi response
+ started</a> steps with <var>request</var> and <var>response</var>.
 
  <!-- If response is still null, we require a forwarded request. -->
  <li>
@@ -5842,6 +5878,9 @@ optional boolean <var>forceNewConnection</var> (default false), run these steps:
 
        <li><p>Wait until all the HTTP response headers are transmitted.
 
+       <li><p>Run the [=WebDriver BiDi response started=] steps with
+       |request| and |response|.
+
        <li><p>Let <var>status</var> be the HTTP response's status code.
 
        <li>