Show HN: Four-Leaf MCP, open-source job search and interview prep

Four-Leaf launched an open-source Skill that turns AI coding tools including Claude, ChatGPT, Cursor, Codex, and GitHub Copilot into a job search and interview prep coach, pulling live data from the hosted Four-Leaf MCP's fifteen tools across 140,000+ active job postings. The Skill is free to install via `npx four-leaf-coach add` and scores typed practice answers 1-10 against a five-dimension rubric, while voice mock interviews and full AI resume tailoring remain paid upgrades on four-leaf.ai. The hosted MCP at https://four-leaf.ai/api/mcp requires a free Four-Leaf account with a 3-day trial and no credit card, and the Skill runs in coaching-only degraded mode without it.

An open-source Skill that turns Claude or ChatGPT, Cursor, Codex, GitHub Copilot into a job search and interview prep coach. It pulls real job postings, role-specific interview intelligence, rubric-scored feedback on practice answers, and resume scoring from the hosted Four-Leaf MCP, then walks the user through preparing for an actual interview. Free to install and use, including scoring the answers you type. Voice mock interviews spoken answers, adaptive follow-ups and full AI resume tailoring live on four-leaf.ai https://four-leaf.ai ; the Skill surfaces those as an upgrade path when they're the right next step. Walks a user through prep for a specific role at a specific company. The Skill greets, asks what they're prepping for, and routes them into one of seven guided workflows. Every workflow pulls live data from the Four-Leaf MCP's fifteen tools jobs and full postings, role intel, question bank, answer scoring, match scoring, comp research, application tracker and adds the Skill's coaching on top. You don't type these as commands. Say what you want in plain language and the coach routes to the right workflow: - Kickoff the coach reads your application tracker, figures out what you're prepping for, and routes you. Say "help me get ready for my job search" or "where am I with everything". - Find jobs natural-language search across 140,000+ active postings, then pull up a full posting and save it to your tracker. Say "find me remote senior data scientist roles". - Prep for a role interview pipeline, what to expect, how to win. Say "what's the interview like for a PM at Stripe". - Practice calibrated questions, then type your answer and get it scored 1-10 against the same five-dimension rubric the Four-Leaf practice page uses. Say "give me a few hard system design questions". - Analyze a JD scores a resume against a posting and points out gaps. Say "how does my resume stack up against this JD". - Negotiate and comp research real numbers from the MCP. Have an offer? It runs a full analysis total comp, market percentile, red flags, a counter strategy with exact talking points . Just asking what a role pays? It returns a cited salary band from a live web search. Say "they made an offer, help me negotiate", "is this offer any good", or "what's a good salary for a backend engineer in Austin". - Interview strategy formats, AI interviewers, work trials, signal vs noise. Say "what are AI interviews actually like". Two steps. The Skill tells your AI tool how to coach. The hosted MCP gives the Skill live data. npx four-leaf-coach add That's it. The CLI detects your tool Claude Code, Cursor, Codex, or GitHub Copilot , asks for scope when it matters, and copies the right bundle into the right place. Useful flags: - --tool <name pick the tool yourself: claude-code , cursor , codex , or github-copilot - --scope <project|global Claude Code only; where to install - --dry-run show what it would do without writing anything - --yes skip confirmation prompts, --force overwrite an existing install - four-leaf-coach list show the supported tools and what's detected in the current directory Cursor needs the Nightly channel with Settings, Rules, Agent Skills enabled. The other tools work out of the box. The Skill works in degraded mode coaching only, no live job data without the MCP. To get real job search, role intel, answer scoring, and resume scoring, install the hosted MCP: Claude Code, Claude Desktop, and any tool that uses claude-mcp config claude mcp add --transport http four-leaf https://four-leaf.ai/api/mcp The first tool call opens the browser for OAuth. A free Four-Leaf account works 3-day trial included, no credit card . For Cursor, ChatGPT Desktop, and other MCP-aware tools, configure the same URL https://four-leaf.ai/api/mcp per that tool's MCP setup docs. Once it's installed, just tell the coach what you need in plain language. Say something like "help me prep for a senior software engineer interview at Google" and it takes it from there. There are no subcommands to memorize; the coach routes based on what you ask. In Claude Code you can also invoke it explicitly with /four-leaf-coach . If you'd rather not run npx air-gapped network, or you just want to see what lands where , clone and build the bundles yourself. This is exactly what npx four-leaf-coach add --tool <name automates. git clone https://github.com/fourleafai/clover-public.git cd clover-public npm run build npm run build reads skills/four-leaf-coach/SKILL.md plus the adjacent references/ tree and writes a dist/<tool / directory for each supported tool. Then copy your tool's bundle into place: | Tool | Build output | Copy into place | |---|---|---| | Claude Code global, all projects | dist/claude-code/ | cp -r dist/claude-code/.claude ~/ | | Claude Code single project | dist/claude-code/ | cp -r dist/claude-code/.claude PROJECT/ replace PROJECT with your project path | | Cursor Nightly + Agent Skills enabled | dist/cursor/ | cp -r dist/cursor/.cursor PROJECT/ | | OpenAI Codex CLI | dist/codex/ | cp -r dist/codex/AGENTS.md dist/codex/references PROJECT/ , then run Codex from PROJECT | | GitHub Copilot | dist/github/ | cp -r dist/github/.github PROJECT/ flattened single-file variant | The GitHub Copilot bundle is a single flattened file .github/copilot-instructions.md because Copilot reads one instructions file and doesn't follow references. The build inlines the whole Skill for it. The other three tools follow file references, so they get the source tree as-is. - Free : the Skill itself, and thirteen of the fifteen MCP tools. That's jobs and full postings, role intel, the question bank, answer scoring, match scoring, comp research, and reading and writing your application tracker. Six of them carry a daily cap on a free account job search 30/day; question generation, answer scoring, match scoring, and the two comp tools 20/day each, on separate counters . The rest are unmetered. - Paid on four-leaf.ai https://four-leaf.ai : two tools. Voice mock interviews with spoken answers and adaptive AI follow-ups, and full AI resume tailoring against a specific JD. A paid plan also lifts the daily caps above. Three options at four-leaf.ai/pricing https://four-leaf.ai/pricing . 3-day free trial no card , $5 5-Day Pass, $20/mo Pro. All three give you the same features. The Skill surfaces these when they're the right next step. It doesn't push. What is four-leaf-coach? An open-source Skill that turns Claude, Cursor, OpenAI Codex, or GitHub Copilot into a job-search and interview-prep coach. The Skill is a structured set of instructions plus reference files that your AI tool loads. It works with the hosted Four-Leaf MCP server for live data real job postings, role-specific interview intelligence, answer scoring, resume scoring, your application tracker . How is this different from just prompting Claude for interview prep? Generic prompts produce generic advice. four-leaf-coach calls real tools: search jobs returns actual apply URLs from 140,000+ active postings and get job expands one to the full text; match score runs a real scoring algorithm against your resume; generate practice questions produces role-calibrated questions and score answer grades what you type against a five-dimension rubric; save application puts a role in your tracker. The Skill orchestrates the calls and coaches around them. Do I need a Four-Leaf account? For the data tools jobs, role intel, question bank, answer scoring, match scoring, comp research, application tracker a free Four-Leaf account works. The 3-day trial requires no credit card. Voice mock interviews and full AI resume tailoring are paid features on four-leaf.ai. The Skill surfaces those as an upgrade path when relevant. Does the MCP work with ChatGPT? Yes. The MCP is HTTP-based with OAuth, so any MCP-aware client connects: Claude Desktop, Claude Code, Cursor, ChatGPT Desktop Plus + Dev mode , Cline, Continue, Windsurf. The Skill itself is a Claude / Cursor / Codex / Copilot primitive; ChatGPT doesn't yet have a comparable file-based Skill convention, but the underlying MCP tools work there. Can I use the Skill without the MCP? Yes, in degraded mode. Without the MCP, the Skill still coaches with structured workflows for prep, practice, JD analysis, and negotiation, just without live job listings, rubric-scored answers, or real resume scoring. Install the MCP to unlock the live data path. Is the question bank really open? The Skill, the per-tool dist pipeline, and the install CLI are MIT-licensed in this repo. The question bank itself lives behind the MCP today; the open-data play is on the roadmap. What about Pi, Gemini CLI, OpenCode, Trae, Rovo Dev, Qoder? On the roadmap. The dist pipeline can target any AI tool with a documented Skill or instructions-file convention. PRs welcome. README.md you are here LICENSE MIT package.json CLI + build wiring, npm metadata bin/ four-leaf-coach.js the npx four-leaf-coach add CLI scripts/ build.js generates dist/<tool / bundles from the source below .claude-plugin/ plugin.json manifest for Claude Code plugin marketplace .mcp.json auto-wires the hosted Four-Leaf MCP on plugin install skills/ four-leaf-coach/ SKILL.md entry point your AI tool loads source of truth references/ mcp-tools.md reference for the MCP tools upgrade-flow.md paid-tier handling pattern commands/ per-workflow instructions kickoff.md find-jobs.md prep-role.md practice.md analyze-jd.md negotiate-prep.md interview-strategy.md dist/ generated by npm run build gitignored, not committed skills/four-leaf-coach/ is the source of truth. dist/ is generated output, so edit the source and rerun npm run build . - Registry submissions to every Skill aggregator that ships a public registry. - Coverage for more tools as their Skill conventions stabilize: Pi, Gemini CLI, OpenCode, Trae, Rovo Dev, Qoder. Done so far: per-tool dist/ bundles generated from a single source npm run build , a flattened single-file variant for GitHub Copilot, and the npx four-leaf-coach add one-command installer. PRs welcome that improve a command's coaching, add a new command, or fix a voice issue. Anything that drifts the Skill's positioning away from "coach, not cheat tool" will be declined. MIT. See LICENSE .