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Search for fixes to an error message

Known causes and fixes for your error from forums, issues and docs, ranked by how well they match.

  • You start it: When you start it
Use in CuiarRun from your AI agent

What it does

The task

Search Stack Overflow, the GitHub issues of project repo and the official docs for this error: error. My setup is: setup. Read at most 20 results, and prefer answers that match my versions. For each likely cause, give the fix, the versions it applies to and links to the sources. Rank the causes by how well they match my setup, in at most 300 words.

  • It works in Stack Overflow, GitHub and any forum, in the workspace you pick, and signs in with passwords from your Cuiar vault.
  • It runs once, when you start it.

What you give it

BlankWhat to giveExample
project repoThe GitHub repository of the tool that shows the errorvercel/next.js
errorThe exact error messageHydration failed because the server rendered HTML didn't match the client
setupYour versions and anything special about your setupNext.js 15.0, React 19, App Router, Chrome

What you get back

An example run with the example values above. Your run uses your own data.

Error: "Hydration failed because the server rendered HTML didn't match the client"

1. Dates or random values made on the server and again in the browser.

Fix: make them in useEffect, or pass them from the server. Sources: Next.js docs, Stack Overflow

2. A browser extension changes the HTML before React loads.

Fix: test in a clean window. Source: GitHub issue in vercel/next.js

3. HTML that is not valid, for example a div in a p element.

Fix: change the tags. Source: React docs

4. Different React versions for the server and the browser.

Fix: give react and react-dom the same version in the lock file. Source: GitHub issue in vercel/next.js

Read 17 results.

Run it in Cuiar

  1. 01

    Open it

    Click Use in Cuiar on this page. The side panel opens with the task in the composer.

  2. 02

    Fill in 3 blanks

    Type project repo, error and setup. Tab moves to the next blank.

  3. 03

    Run it

    Run sends it to the agent. Follow each step in the panel, and stop it at any time.

From the terminal

cuiar exec "Search Stack Overflow, the GitHub issues of vercel/next.js and the official docs for this error: Hydration failed because the server rendered HTML didn't match the client. My setup is: Next.js 15.0, React 19, App Router, Chrome. Read at most 20 results, and prefer answers that match my versions. For each likely cause, give the fix, the versions it applies to and links to the sources. Rank the causes by how well they match my setup, in at most 300 words."

Run it from your AI agent

Claude Code, Codex, Cursor and other MCP clients reach Cuiar at https://mcp.cuiar.com/mcp. Add the server one time, then ask for the task in plain words, or call run_task yourself.

1. Add Cuiar to Claude Code

claude mcp add --transport http cuiar https://mcp.cuiar.com/mcp

2. Ask your agent

Use the Cuiar tool run_task to run my "Search for fixes to an error message" template with project repo = vercel/next.js; error = Hydration failed because the server rendered HTML didn't match the client; setup = Next.js 15.0, React 19, App Router, Chrome.

Setup for other agents: AI agents.

The tool call

{
  "name": "run_task",
  "arguments": {
    "task": "Search Stack Overflow, the GitHub issues of vercel/next.js and the official docs for this error: Hydration failed because the server rendered HTML didn't match the client. My setup is: Next.js 15.0, React 19, App Router, Chrome. Read at most 20 results, and prefer answers that match my versions. For each likely cause, give the fix, the versions it applies to and links to the sources. Rank the causes by how well they match my setup, in at most 300 words."
  }
}

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