JS script to send connection requests to your LinkedIn search results with customisation options, accept all received connection requests, and withdraw pending sent connection requests.

AutoConnectLinkedIn.js

// If the script does not work, you may need to allow same site scripting https://stackoverflow.com/a/50902950

Linkedin = {
  config: {
    scrollDelay: 3000,
    actionDelay: 5000,
    nextPageDelay: 5000,
    // set to -1 for no limit
    maxRequests: -1,
    totalRequestsSent: 0,
    // set to false to skip adding note in invites
    addNote: true,
    note: "Hey {{name}}, I'm looking forward to connecting with you!",
  },
  init: function (data, config) {
    console.info("INFO: script initialized on the page...");
    console.debug(
      "DEBUG: scrolling to bottom in " + config.scrollDelay + " ms"
    );
    setTimeout(() => this.scrollBottom(data, config), config.actionDelay);
  },
  scrollBottom: function (data, config) {
    window.scrollTo({ top: document.body.scrollHeight, behavior: "smooth" });
    console.debug("DEBUG: scrolling to top in " + config.scrollDelay + " ms");
    setTimeout(() => this.scrollTop(data, config), config.scrollDelay);
  },
  scrollTop: function (data, config) {
    window.scrollTo({ top: 0, behavior: "smooth" });
    console.debug(
      "DEBUG: inspecting elements in " + config.scrollDelay + " ms"
    );
    setTimeout(() => this.inspect(data, config), config.scrollDelay);
  },
  inspect: function (data, config) {
    var totalRows = this.totalRows();
    console.debug("DEBUG: total search results found on page are " + totalRows);
    if (totalRows >= 0) {
      this.compile(data, config);
    } else {
      console.warn("WARN: end of search results!");
      this.complete(config);
    }
  },
  compile: function (data, config) {
    var elements = document.querySelectorAll("button");
    data.pageButtons = [...elements].filter(function (element) {
      return element.textContent.trim() === "Connect";
    });
    if (!data.pageButtons || data.pageButtons.length === 0) {
      console.warn("ERROR: no connect buttons found on page!");
      console.info("INFO: moving to next page...");
      setTimeout(() => {
        this.nextPage(config);
      }, config.nextPageDelay);
    } else {
      data.pageButtonTotal = data.pageButtons.length;
      console.info("INFO: " + data.pageButtonTotal + " connect buttons found");
      data.pageButtonIndex = 0;
      var names = document.getElementsByClassName("entity-result__title-text");
      names = [...names].filter(function (element) {
        return element.parentNode.parentNode.parentNode.parentNode.parentNode.parentNode.parentNode.parentNode.textContent.includes(
          "Connect\n"
        );
      });
      data.connectNames = [...names].map(function (element) {
        return element.innerText.split(" ")[0];
      });
      console.debug(
        "DEBUG: starting to send invites in " + config.actionDelay + " ms"
      );
      setTimeout(() => {
        this.sendInvites(data, config);
      }, config.actionDelay);
    }
  },
  sendInvites: function (data, config) {
    console.debug("remaining requests " + config.maxRequests);
    if (config.maxRequests == 0) {
      console.info("INFO: max requests reached for the script run!");
      this.complete(config);
    } else {
      console.debug(
        "DEBUG: sending invite to " +
          (data.pageButtonIndex + 1) +
          " out of " +
          data.pageButtonTotal
      );
      var button = data.pageButtons[data.pageButtonIndex];
      button.click();
      if (config.addNote && config.note) {
        console.debug(
          "DEBUG: clicking Add a note in popup, if present, in " +
            config.actionDelay +
            " ms"
        );
        setTimeout(() => this.clickAddNote(data, config), config.actionDelay);
      } else {
        console.debug(
          "DEBUG: clicking done in popup, if present, in " +
            config.actionDelay +
            " ms"
        );
        setTimeout(() => this.clickDone(data, config), config.actionDelay);
      }
    }
  },
  clickAddNote: function (data, config) {
    var buttons = document.querySelectorAll("button");
    var addNoteButton = Array.prototype.filter.call(buttons, function (el) {
      return el.textContent.trim() === "Add a note";
    });
    // adding note if required
    if (addNoteButton && addNoteButton[0]) {
      console.debug("DEBUG: clicking add a note button to paste note");
      addNoteButton[0].click();
      console.debug("DEBUG: pasting note in " + config.actionDelay);
      setTimeout(() => this.pasteNote(data, config), config.actionDelay);
    } else {
      console.debug(
        "DEBUG: add note button not found, clicking send on the popup in " +
          config.actionDelay
      );
      setTimeout(() => this.clickDone(data, config), config.actionDelay);
    }
  },
  pasteNote: function (data, config) {
    noteTextBox = document.getElementById("custom-message");
    noteTextBox.value = config.note.replace(
      "{{name}}",
      data.connectNames[data.pageButtonIndex]
    );
    noteTextBox.dispatchEvent(
      new Event("input", {
        bubbles: true,
      })
    );
    console.debug(
      "DEBUG: clicking send in popup, if present, in " +
        config.actionDelay +
        " ms"
    );
    setTimeout(() => this.clickDone(data, config), config.actionDelay);
  },
  clickDone: function (data, config) {
    var buttons = document.querySelectorAll("button");
    var doneButton = Array.prototype.filter.call(buttons, function (el) {
      return el.textContent.trim() === "Send";
    });
    // Click the first send button
    if (doneButton && doneButton[0]) {
      console.debug("DEBUG: clicking send button to close popup");
      doneButton[0].click();
    } else {
      console.debug(
        "DEBUG: send button not found, clicking close on the popup in " +
          config.actionDelay
      );
    }
    setTimeout(() => this.clickClose(data, config), config.actionDelay);
  },
  clickClose: function (data, config) {
    var closeButton = document.getElementsByClassName(
      "artdeco-modal__dismiss artdeco-button artdeco-button--circle artdeco-button--muted artdeco-button--2 artdeco-button--tertiary ember-view"
    );
    if (closeButton && closeButton[0]) {
      closeButton[0].click();
    }
    console.info(
      "INFO: invite sent to " +
        (data.pageButtonIndex + 1) +
        " out of " +
        data.pageButtonTotal
    );
    config.maxRequests--;
    config.totalRequestsSent++;
    if (data.pageButtonIndex === data.pageButtonTotal - 1) {
      console.debug(
        "DEBUG: all connections for the page done, going to next page in " +
          config.actionDelay +
          " ms"
      );
      setTimeout(() => this.nextPage(config), config.actionDelay);
    } else {
      data.pageButtonIndex++;
      console.debug(
        "DEBUG: sending next invite in " + config.actionDelay + " ms"
      );
      setTimeout(() => this.sendInvites(data, config), config.actionDelay);
    }
  },
  nextPage: function (config) {
    var pagerButton = document.getElementsByClassName(
      "artdeco-pagination__button--next"
    );
    if (
      !pagerButton ||
      pagerButton.length === 0 ||
      pagerButton[0].hasAttribute("disabled")
    ) {
      console.info("INFO: no next page button found!");
      return this.complete(config);
    }
    console.info("INFO: Going to next page...");
    pagerButton[0].click();
    setTimeout(() => this.init({}, config), config.nextPageDelay);
  },
  complete: function (config) {
    console.info(
      "INFO: script completed after sending " +
        config.totalRequestsSent +
        " connection requests"
    );
  },
  totalRows: function () {
    var search_results = document.getElementsByClassName("search-result");
    if (search_results && search_results.length != 0) {
      return search_results.length;
    } else {
      return 0;
    }
  },
};

Linkedin.init({}, Linkedin.config);

I think it's not true.
I can still able to connect manually by going inside their profile. Where we have a "more" button.
And the link you share getting a 404 error. @leomosley

Oops the repo was private. Should be fixed now.

Yes you are right, don't have a fix right now for the follow or message.

The thing is they could be someone you have already connected or not but you can't tell unless you to their profile and click on the more tab like you said.

You can only send around 100-200 invitation requests a week so its probably quicker to just let it skip the follow/message and you'll reach the limit pretty quickly anyway. 🤷‍♂️