A Bookmarklet to Copy Codex Assistant Replies and PR Messages to Your Clipboard

Overview

The content describes a JavaScript bookmarklet designed for the Codex web UI. Its purpose is to collect text from a Codex task—specifically assistant responses and pull request (PR) messages—and present them in a simple on-page overlay where each item can be copied to the clipboard with one click.

Instead of manually selecting text across multiple turns, the bookmarklet automatically finds the relevant task data in the page, extracts textual content, formats PR messages nicely, and then provides a compact “copy list” interface.

What the Bookmarklet Extracts

The script builds a list of Markdown-like text snippets from the task’s turns:

Assistant and User Message Text

For each turn, it inspects the turn’s items:

• If the item is a message, it walks through the content blocks and concatenates only text blocks (content_type == "text").
• Non-text content types are ignored.

This results in clean copyable text without extra UI artifacts.

PR Titles and PR Descriptions

If an item is a pr, it formats it as:

• A Markdown heading using the PR title: # <pr_title>
• Followed by the PR body: <pr_message>

This makes the copied PR content immediately usable in docs, GitHub, or review notes.

How It Finds the Right Data in the Page

A key challenge in bookmarklets is locating application state that’s buried in runtime objects. This script does that with a recursive object search utility:

Deep Search with Cycle Protection

The function findFirstParentWhere(obj, matcher) performs a depth-first traversal over object graphs, with safeguards:

• Uses a WeakSet to avoid infinite loops from cyclic references.
• Skips non-objects and functions.
• Checks each visited object with a matcher(parent, path) predicate.

Locating the Task and Turn Mapping

The bookmarklet identifies the current taskId from the URL path (the last segment), then searches for:

• An object that has a task property where task.id == taskId
• An object that has a turn_mapping property where all keys start with taskId

Once found, it extracts environment metadata like:

• Repository label (environment_label)
• Branch name (branch_name)

Those are logged for debugging and confirmation.

Ordering and Building the Copy List

Turns are sorted chronologically by created_at to preserve the conversation flow. Then the script reduces the turns into a flat list of strings (turnMdList) by:

• Choosing the correct field depending on role:

  • user → input_items
  • assistant → output_items

• Extracting message text and PR content as described above

The final product is an ordered array of copy-ready text blocks.

The Copy Overlay UI

The bookmarklet injects a full-screen overlay that includes:

• A dark backdrop (clicking it closes the overlay)

• A centered panel with:

  • A header (“Copy list (N)”) and close button
  • A scrollable list of entries

• A toast notification (“Copied!”, etc.)

Each row shows:

• An index number
• The extracted text (in a <pre> block for readability)
• A Copy button that copies that specific entry

Clipboard Handling

Copying uses a two-step strategy:

1. Prefer navigator.clipboard.writeText() (modern browsers)
2. Fallback to document.execCommand("copy") using a hidden <textarea>

This improves compatibility across browsers and permission settings.

Keyboard and Interaction

• Pressing Escape closes the overlay.
• Clicking outside the panel closes it.
• Visual feedback is provided via toast messages and temporary button label changes (“Copied”).

Why This Is Useful

This bookmarklet is a practical “export” tool for Codex tasks:

• Quickly copy assistant responses for sharing or documentation
• Extract PR messages consistently formatted for GitHub
• Avoid manual selection and scrolling across many turns
• Works entirely client-side as a lightweight UI enhancement

In short, it turns a complex page state into a simple, reliable “copy menu” tailored for developer workflows.

javascript:!function(){const taskId=location.pathname.split(%22/%22).filter(Boolean).pop();function findFirstParentWhere(obj,matcher){const visited=new WeakSet;return function dfs(node,path){if(null===node)return null;if(%22object%22!==typeof node)return null;if(%22function%22==typeof node)return null;const anyNode=node;if(visited.has(anyNode))return null;visited.add(anyNode);if(matcher(anyNode,path))return{parent:anyNode,path:path};if(Array.isArray(anyNode))for(let i=0;i<anyNode.length;i++){const hit=dfs(anyNode[i],path.concat(i));if(hit)return hit}else for(const[k,v]of Object.entries(anyNode)){const hit=dfs(v,path.concat(k));if(hit)return hit}return null}(obj,[])}const resultFindTask=findFirstParentWhere(window,(parent,path)=>{if(!Object.prototype.hasOwnProperty.call(parent,%22task%22))return!1;const task=parent.task;return task&&task.id==taskId});if(!resultFindTask)throw new Error(%22No matching element found (taskId=%22+JSON.stringify(taskId)+%22).%22);const taskInfo=resultFindTask.parent;console.log(taskInfo);const resultTurnMapping=findFirstParentWhere(window,(parent,path)=>{if(!Object.prototype.hasOwnProperty.call(parent,%22turn_mapping%22))return!1;const turnMapping=parent.turn_mapping;return Object.keys(turnMapping).reduce((previousValue,currentValue,currentIndex,array)=>previousValue&&currentValue.startsWith(taskId),!0)});if(!resultTurnMapping)throw new Error(%22No matching element found (taskId=%22+JSON.stringify(taskId)+%22).%22);const turnsInfo=resultTurnMapping.parent;console.log(turnsInfo);const repo=taskInfo.task.task_status_display.environment_label;const branchName=taskInfo.task.task_status_display.branch_name;console.log({taskId:taskId,repo:repo,branchName:branchName,taskInfo:taskInfo,turnsInfo:turnsInfo});const turnMdList=Object.entries(turnsInfo.turn_mapping).sort(([,a],[,b])=>a.turn.created_at-b.turn.created_at).reduce((previousValue0,[,currentValue0],currentIndex0,array0)=>{let ioitemsStr=null;console.log({currentValue0:currentValue0});if(%22user%22==currentValue0.turn.role)ioitemsStr=%22input_items%22;else{if(%22assistant%22!=currentValue0.turn.role)throw Error(%22turn.role = %22+JSON.stringify(currentValue0.turn.role));ioitemsStr=%22output_items%22}return currentValue0.turn[ioitemsStr].reduce((previousValue1,currentValue1,currentIndex1,array1)=>{if(%22message%22==currentValue1.type){previousValue1.push(currentValue1.content.reduce((previousValue2,currentValue2,currentIndex2,array2)=>%22text%22==currentValue2.content_type?previousValue2+currentValue2.text:previousValue2,%22%22));return%20previousValue1}if(%22pr%22==currentValue1.type){const%20prMessage=%22#%20%22+currentValue1.pr_title+%22\n\n%22+currentValue1.pr_message;previousValue1.push(prMessage);return%20previousValue1}return%20previousValue1},previousValue0)},[]);console.log(turnMdList);!function(strings){if(!Array.isArray(strings))throw%20new%20TypeError(%22strings%20must%20be%20an%20array%22);strings=strings.map(s=%3Enull==s?%22%22:String(s));const%20existing=document.getElementById(%22__copy_overlay_root__%22);existing&&existing.remove();const%20root=document.createElement(%22div%22);root.id=%22__copy_overlay_root__%22;root.style.cssText=[%22position:fixed%22,%22inset:0%22,%22z-index:2147483647%22,%22font-family:system-ui,-apple-system,Segoe%20UI,Roboto,Helvetica,Arial,'Apple%20Color%20Emoji','Segoe%20UI%20Emoji'%22].join(%22;%22);const%20backdrop=document.createElement(%22div%22);backdrop.style.cssText=[%22position:absolute%22,%22inset:0%22,%22background:rgba(0,0,0,.45)%22].join(%22;%22);const%20panel=document.createElement(%22div%22);panel.style.cssText=[%22position:absolute%22,%22top:5vh%22,%22left:50%25%22,%22transform:translateX(-50%25)%22,%22width:min(900px,92vw)%22,%22max-height:90vh%22,%22background:#fff%22,%22border-radius:14px%22,%22box-shadow:0%2010px%2030px%20rgba(0,0,0,.25)%22,%22display:flex%22,%22flex-direction:column%22,%22overflow:hidden%22].join(%22;%22);const%20header=document.createElement(%22div%22);header.style.cssText=[%22padding:12px%2014px%22,%22display:flex%22,%22align-items:center%22,%22justify-content:space-between%22,%22border-bottom:1px%20solid%20#eee%22,%22gap:10px%22].join(%22;%22);const%20title=document.createElement(%22div%22);title.textContent=%60Copy%20list%20(${strings.length})%60;title.style.cssText=%22font-weight:600;font-size:14px;color:#111;%22;const%20closeBtn=document.createElement(%22button%22);closeBtn.type=%22button%22;closeBtn.textContent=%22%C3%97%22;closeBtn.setAttribute(%22aria-label%22,%22Close%22);closeBtn.style.cssText=[%22width:32px%22,%22height:32px%22,%22border-radius:10px%22,%22border:1px%20solid%20#ddd%22,%22background:#fff%22,%22cursor:pointer%22,%22font-size:20px%22,%22line-height:1%22].join(%22;%22);const%20body=document.createElement(%22div%22);body.style.cssText=[%22padding:10px%22,%22overflow:auto%22].join(%22;%22);const%20list=document.createElement(%22div%22);list.style.cssText=%22display:flex;flex-direction:column;gap:8px;%22;const%20toast=document.createElement(%22div%22);toast.style.cssText=[%22position:absolute%22,%22bottom:12px%22,%22left:50%25%22,%22transform:translateX(-50%25)%22,%22background:rgba(17,17,17,.92)%22,%22color:#fff%22,%22padding:8px%2010px%22,%22border-radius:10px%22,%22font-size:12px%22,%22opacity:0%22,%22transition:opacity%20.15s%20ease%22,%22pointer-events:none%22].join(%22;%22);let%20toastTimer=null;function%20showToast(msg){toast.textContent=msg;toast.style.opacity=%221%22;clearTimeout(toastTimer);toastTimer=setTimeout(()=%3Etoast.style.opacity=%220%22,900)}function%20makeRow(text,idx){const%20row=document.createElement(%22div%22);row.style.cssText=[%22display:flex%22,%22gap:10px%22,%22align-items:flex-start%22,%22border:1px%20solid%20#eee%22,%22border-radius:12px%22,%22padding:10px%22,%22background:#fafafa%22].join(%22;%22);const%20num=document.createElement(%22div%22);num.textContent=String(idx+1);num.style.cssText=[%22min-width:26px%22,%22text-align:right%22,%22color:#666%22,%22font-size:12px%22,%22padding-top:2px%22].join(%22;%22);const%20pre=document.createElement(%22pre%22);pre.textContent=text;pre.style.cssText=[%22margin:0%22,%22white-space:pre-wrap%22,%22word-break:break-word%22,%22flex:1%22,%22font-size:13px%22,%22line-height:1.35%22,%22color:#111%22].join(%22;%22);const%20actions=document.createElement(%22div%22);actions.style.cssText=%22display:flex;flex-direction:column;gap:6px;%22;const%20btn=document.createElement(%22button%22);btn.type=%22button%22;btn.textContent=%22Copy%22;btn.style.cssText=[%22border:1px%20solid%20#ddd%22,%22background:#fff%22,%22border-radius:10px%22,%22padding:7px%2010px%22,%22cursor:pointer%22,%22font-size:12px%22,%22font-weight:600%22].join(%22;%22);btn.addEventListener(%22click%22,async()=%3E{btn.disabled=!0;const%20ok=await%20async%20function(text){try{if(navigator.clipboard&&navigator.clipboard.writeText){await%20navigator.clipboard.writeText(text);return!0}}catch(_){}try{const%20ta=document.createElement(%22textarea%22);ta.value=text;ta.setAttribute(%22readonly%22,%22%22);ta.style.cssText=%22position:fixed;left:-9999px;top:-9999px;%22;document.body.appendChild(ta);ta.select();const%20ok=document.execCommand(%22copy%22);ta.remove();return%20ok}catch(_){return!1}}(text);if(ok){showToast(%22Copied!%22);btn.textContent=%22Copied%22;setTimeout(()=%3Ebtn.textContent=%22Copy%22,800)}else%20showToast(%22Copy%20failed%20(browser%20blocked).%22);btn.disabled=!1});actions.appendChild(btn);row.appendChild(num);row.appendChild(pre);row.appendChild(actions);return%20row}strings.forEach((s,i)=%3Elist.appendChild(makeRow(s,i)));function%20close(){window.removeEventListener(%22keydown%22,onKeyDown,!0);root.remove()}function%20onKeyDown(e){%22Escape%22===e.key&&close()}backdrop.addEventListener(%22click%22,close);closeBtn.addEventListener(%22click%22,close);window.addEventListener(%22keydown%22,onKeyDown,!0);header.appendChild(title);header.appendChild(closeBtn);body.appendChild(list);panel.appendChild(header);panel.appendChild(body);root.appendChild(backdrop);root.appendChild(panel);root.appendChild(toast);document.body.appendChild(root);showToast(%22Click%20Copy%20to%20copy%20text%22)}(turnMdList)}();

(function () {

  const taskId = location.pathname.split("/").filter(Boolean).pop();

  function findFirstParentWhere(obj, matcher) {
    const visited = new WeakSet();

    function dfs(node, path) {
      if (node === null) return null;

      const t = typeof node;
      if (t !== "object") return null;

      if (typeof node === "function") return null;

      const anyNode = node;

      if (visited.has(anyNode)) return null;
      visited.add(anyNode);

      if (matcher(anyNode, path)) {
        return { parent: anyNode, path };
      }

      if (Array.isArray(anyNode)) {
        for (let i = 0; i < anyNode.length; i++) {
          const hit = dfs(anyNode[i], path.concat(i));
          if (hit) return hit;
        }
      } else {
        for (const [k, v] of Object.entries(anyNode)) {
          const hit = dfs(v, path.concat(k));
          if (hit) return hit;
        }
      }

      return null;
    }

    return dfs(obj, []);
  }

  function showCopyOverlay(strings) {
    if (!Array.isArray(strings)) throw new TypeError("strings must be an array");
    strings = strings.map(s => (s == null ? "" : String(s)));

    const existing = document.getElementById("__copy_overlay_root__");
    if (existing) existing.remove();

    const root = document.createElement("div");
    root.id = "__copy_overlay_root__";
    root.style.cssText = [
      "position:fixed",
      "inset:0",
      "z-index:2147483647",
      "font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,'Apple Color Emoji','Segoe UI Emoji'",
    ].join(";");

    const backdrop = document.createElement("div");
    backdrop.style.cssText = [
      "position:absolute",
      "inset:0",
      "background:rgba(0,0,0,.45)",
    ].join(";");

    const panel = document.createElement("div");
    panel.style.cssText = [
      "position:absolute",
      "top:5vh",
      "left:50%",
      "transform:translateX(-50%)",
      "width:min(900px,92vw)",
      "max-height:90vh",
      "background:#fff",
      "border-radius:14px",
      "box-shadow:0 10px 30px rgba(0,0,0,.25)",
      "display:flex",
      "flex-direction:column",
      "overflow:hidden",
    ].join(";");

    const header = document.createElement("div");
    header.style.cssText = [
      "padding:12px 14px",
      "display:flex",
      "align-items:center",
      "justify-content:space-between",
      "border-bottom:1px solid #eee",
      "gap:10px",
    ].join(";");

    const title = document.createElement("div");
    title.textContent = `Copy list (${strings.length})`;
    title.style.cssText = "font-weight:600;font-size:14px;color:#111;";

    const closeBtn = document.createElement("button");
    closeBtn.type = "button";
    closeBtn.textContent = "×";
    closeBtn.setAttribute("aria-label", "Close");
    closeBtn.style.cssText = [
      "width:32px",
      "height:32px",
      "border-radius:10px",
      "border:1px solid #ddd",
      "background:#fff",
      "cursor:pointer",
      "font-size:20px",
      "line-height:1",
    ].join(";");

    const body = document.createElement("div");
    body.style.cssText = [
      "padding:10px",
      "overflow:auto",
    ].join(";");

    const list = document.createElement("div");
    list.style.cssText = "display:flex;flex-direction:column;gap:8px;";

    const toast = document.createElement("div");
    toast.style.cssText = [
      "position:absolute",
      "bottom:12px",
      "left:50%",
      "transform:translateX(-50%)",
      "background:rgba(17,17,17,.92)",
      "color:#fff",
      "padding:8px 10px",
      "border-radius:10px",
      "font-size:12px",
      "opacity:0",
      "transition:opacity .15s ease",
      "pointer-events:none",
    ].join(";");

    let toastTimer = null;
    function showToast(msg) {
      toast.textContent = msg;
      toast.style.opacity = "1";
      clearTimeout(toastTimer);
      toastTimer = setTimeout(() => (toast.style.opacity = "0"), 900);
    }

    async function copyText(text) {
      try {
        if (navigator.clipboard && navigator.clipboard.writeText) {
          await navigator.clipboard.writeText(text);
          return true;
        }
      } catch (_) {}

      // fallback: execCommand
      try {
        const ta = document.createElement("textarea");
        ta.value = text;
        ta.setAttribute("readonly", "");
        ta.style.cssText = "position:fixed;left:-9999px;top:-9999px;";
        document.body.appendChild(ta);
        ta.select();
        const ok = document.execCommand("copy");
        ta.remove();
        return ok;
      } catch (_) {
        return false;
      }
    }

    function makeRow(text, idx) {
      const row = document.createElement("div");
      row.style.cssText = [
        "display:flex",
        "gap:10px",
        "align-items:flex-start",
        "border:1px solid #eee",
        "border-radius:12px",
        "padding:10px",
        "background:#fafafa",
      ].join(";");

      const num = document.createElement("div");
      num.textContent = String(idx + 1);
      num.style.cssText = [
        "min-width:26px",
        "text-align:right",
        "color:#666",
        "font-size:12px",
        "padding-top:2px",
      ].join(";");

      const pre = document.createElement("pre");
      pre.textContent = text;
      pre.style.cssText = [
        "margin:0",
        "white-space:pre-wrap",
        "word-break:break-word",
        "flex:1",
        "font-size:13px",
        "line-height:1.35",
        "color:#111",
      ].join(";");

      const actions = document.createElement("div");
      actions.style.cssText = "display:flex;flex-direction:column;gap:6px;";

      const btn = document.createElement("button");
      btn.type = "button";
      btn.textContent = "Copy";
      btn.style.cssText = [
        "border:1px solid #ddd",
        "background:#fff",
        "border-radius:10px",
        "padding:7px 10px",
        "cursor:pointer",
        "font-size:12px",
        "font-weight:600",
      ].join(";");

      btn.addEventListener("click", async () => {
        btn.disabled = true;
        const ok = await copyText(text);
        if (ok) {
          showToast("Copied!");
          btn.textContent = "Copied";
          setTimeout(() => (btn.textContent = "Copy"), 800);
        } else {
          showToast("Copy failed (browser blocked).");
        }
        btn.disabled = false;
      });

      actions.appendChild(btn);
      row.appendChild(num);
      row.appendChild(pre);
      row.appendChild(actions);
      return row;
    }

    strings.forEach((s, i) => list.appendChild(makeRow(s, i)));

    function close() {
      window.removeEventListener("keydown", onKeyDown, true);
      root.remove();
    }

    function onKeyDown(e) {
      if (e.key === "Escape") close();
    }

    backdrop.addEventListener("click", close);
    closeBtn.addEventListener("click", close);
    window.addEventListener("keydown", onKeyDown, true);

    header.appendChild(title);
    header.appendChild(closeBtn);
    body.appendChild(list);
    panel.appendChild(header);
    panel.appendChild(body);

    root.appendChild(backdrop);
    root.appendChild(panel);
    root.appendChild(toast);
    document.body.appendChild(root);

    showToast("Click Copy to copy text");
    return { close };
  }

  const resultFindTask = findFirstParentWhere(window, (parent, path) => {
    if (!Object.prototype.hasOwnProperty.call(parent, "task")) return false;
    const task = parent.task;
    return task && task.id == taskId; // keep == for string/number compatibility
  });

  if (!resultFindTask) {
    throw new Error("No matching element found (taskId=" + JSON.stringify(taskId) + ").");
  }

  const taskInfo = resultFindTask.parent;

  console.log(taskInfo);

  const resultTurnMapping = findFirstParentWhere(window, (parent, path) => {
    if (!Object.prototype.hasOwnProperty.call(parent, "turn_mapping")) return false;
    const turnMapping = parent.turn_mapping;
    return Object.keys(turnMapping).reduce((previousValue, currentValue, currentIndex, array) => {
      return previousValue && currentValue.startsWith(taskId);
    }, true);
  });

  if (!resultTurnMapping) {
    throw new Error("No matching element found (taskId=" + JSON.stringify(taskId) + ").");
  }

  const turnsInfo = resultTurnMapping.parent;

  console.log(turnsInfo);

  const repo = taskInfo.task.task_status_display.environment_label;
  const branchName = taskInfo.task.task_status_display.branch_name;

  console.log({taskId, repo, branchName, taskInfo, turnsInfo});

  const turnsSorted = Object.entries(turnsInfo.turn_mapping).sort(([, a], [, b]) => a.turn.created_at - b.turn.created_at);

  const turnMdList = turnsSorted.reduce((previousValue0 /* [string, any] */, [, currentValue0] /* [string, any] */, currentIndex0 /* number */, array0 /* [string, any][] */) => {
  // .map(([, value] /* [string, any] */, index, array /* [string, any][] */) => {
    let ioitemsStr = null;
    console.log({currentValue0});
    if (currentValue0.turn.role == "user") {
      ioitemsStr = "input_items";
    } else if (currentValue0.turn.role == "assistant") {
      ioitemsStr = "output_items";
    } else {
      throw Error("turn.role = " + JSON.stringify(currentValue0.turn.role));
    }
    return currentValue0.turn[ioitemsStr].reduce((previousValue1, currentValue1, currentIndex1, array1) => {
      if (currentValue1.type == "message") {
        previousValue1.push(currentValue1.content.reduce((previousValue2, currentValue2, currentIndex2, array2) => {
          if (currentValue2.content_type == "text") {
            return previousValue2 + currentValue2.text;
          } else {
            return previousValue2;
          }
        }, ""));
        return previousValue1;
      } else if (currentValue1.type == "pr") {
        const prMessage = "# " + currentValue1.pr_title + "\n\n" + currentValue1.pr_message;
        previousValue1.push(prMessage);
        return previousValue1;
      } else {
        return previousValue1;
      }
    }, previousValue0);
  }, []);

  console.log(turnMdList);

  showCopyOverlay(turnMdList);

})();