Writes a 10 bullet point summary for posts on https://forum.effectivealtruism.org/ Copy it here: https://mrcoles.com/bookmarklet/ You'll need an API key from OpenAI https://platform.openai.com/account/api-keys

EA Forum Summary Bookmarklet.js

(async function () {
  const API_KEY = "YOUR_API_KEY";
  const SYSTEM_PROMPT = "Summarize the following article in 10 bullet points:";
  
  async function getSummary(text) {
    const API_URL = "https://api.openai.com/v1/chat/completions";
    const data = {
      model: "gpt-3.5-turbo-16k",
      messages: [
        {
          role: "system",
          content: SYSTEM_PROMPT,
        },
        {
          role: "user",
          content: text,
        },
      ],
    };
    const response = await fetch(API_URL, {
      method: "POST",
      headers: {
        "Content-Type": "application/json",
        Authorization: "Bearer " + API_KEY,
      },
      body: JSON.stringify(data),
    });
    const json = await response.json();
    return json.choices[0].message.content;
  }

  function getTextChunks(node) {
    if (node.nodeType === 3) {
      return [node.textContent];
    }
    if (node.offsetParent === null) {
      return [];
    }
    let nodes = [];
    for (const child of node.childNodes) {
      nodes = nodes.concat(getTextChunks(child));
    }
    return nodes;
  }

  const title = document.querySelector("h1.PostsPageTitle-root")?.textContent;
  let body = document.querySelector(".PostsPage-postContent");
  if (!body || !title) {
    throw Error("No body or title found");
  }

  let paragraphs = getTextChunks(body);
  let chunks = [paragraphs.shift()];
  while (paragraphs.length > 0) {
    const next_paragraph = paragraphs.shift();
    if (chunks.at(-1).length + next_paragraph.length < 45000) {
      chunks[chunks.length - 1] += "\n\n" + next_paragraph;
    } else {
      chunks.push(next_paragraph);
    }
  }
  const queries = chunks.map((chunk) => title + "\n\n" + chunk);

  const bodyEl = document.querySelector(".PostsPage-postContent");
  const newElement = document.createElement("div");
  newElement.style =
    "white-space:pre-wrap;border:#333 3px solid;padding:2em;margin-bottom:2em;";
  newElement.classList.add("ContentStyles-base");
  bodyEl.parentElement.insertBefore(newElement, bodyEl);
  newElement.textContent = "Generating summary...";

  try {
    const summaries = await Promise.all(queries.map(getSummary));
    newElement.textContent = summaries.join("----------------------\n\n");
  } catch (e) {
    newElement.textContent = "Error: " + e + e.message;
  }
})();