The tools, where you already work.

Add one address, https://thinkhard.si/mcp, and your assistant can search 669 expert prompts, grade a prompt, check an answer against its prompt, plan a job as a chain of prompts, build a custom assistant, lint the prompts in a codebase, audit a library and check a brief for a coding agent, in the middle of a conversation.

Set it upEvery toolClaude Desktop extension

A panel in the block editor, and on the screen you see when you press Publish, that reads a post written with AI: phrases that sound machine-made, claims to check, markdown left over from a chat, blanks the AI left, private details and links to open. It runs in the editor and sends nothing anywhere.

About the pluginDownload the plugin

A score beside the message box in ChatGPT, Claude, Gemini and Copilot that updates as you type, with what your prompt is missing. Select text on any page and right-click to check it: did the AI do what you asked, the facts to check, what sounds like AI, a clean copy for Word or Slack, or a task for a coding agent. It makes no network requests; the tool you pick opens with your text after the #, which browsers never send to a server.

Coming to the Chrome Web Store and Edge Add-ons. The privacy page says exactly what it does.

The Prompt Linter on every pull request: it finds the prompts in your code, fails the build on user input that can rewrite a system prompt, a reply parsed as JSON that never asked for JSON or a key in a prompt, and writes SARIF so GitHub shows each finding on its line. No install and no dependencies, Node 18 or later.

npx -y --package=https://thinkhard.si/downloads/thinkhard-mcp.tgz thinkhard-lint . --sarif prompt-lint.sarif

The GitHub Actions workflow

The same tools as plain JSON over HTTP, with CORS open and no key: search and fetch prompts, grade a prompt, check an answer, plan a job, build an assistant, lint code, audit a library, check a coding agent's brief and price an AI feature. For scripts, Zapier, Make, n8n or a spreadsheet.

API referenceOpenAPI 3.1

Share text from WhatsApp, Mail, Notes or any app to thinkhard.si and see what it is: a prompt gets its score, an AI answer its facts to check and what sounds robotic. The text is read on your phone and never uploaded.

Set it up