What's the current state of across communities?

You need to walk in with current consensus, not stale impressions. A grounded brief you can defend in a real meeting.

last30days (Claude Skill) — Use Cases, Install & Live Demo

Why use it

Key features

Multi-source: Reddit, X, YouTube, HN, Polymarket, general web
Date-windowed (default last 30 days)
Per-source citation with timestamp
Sentiment + consensus analysis across sources
Markdown output ready to paste
Works with any agent — local skill, no SaaS

Live Demo

What it looks like in practice

ready

Install

Pick your client

~/Library/Application Support/Claude/claude_desktop_config.json · Windows: %APPDATA%\Claude\claude_desktop_config.json

{
  "mcpServers": {
    "last30days-skill": {
      "command": "git",
      "args": [
        "clone",
        "https://github.com/mvanhorn/last30days-skill",
        "~/.claude/skills/last30days"
      ],
      "_inferred": true
    }
  }
}

Open Claude Desktop → Settings → Developer → Edit Config. Restart after saving.

~/.cursor/mcp.json · .cursor/mcp.json

{
  "mcpServers": {
    "last30days-skill": {
      "command": "git",
      "args": [
        "clone",
        "https://github.com/mvanhorn/last30days-skill",
        "~/.claude/skills/last30days"
      ],
      "_inferred": true
    }
  }
}

Cursor uses the same mcpServers schema as Claude Desktop. Project config wins over global.

VS Code → Cline → MCP Servers → Edit

{
  "mcpServers": {
    "last30days-skill": {
      "command": "git",
      "args": [
        "clone",
        "https://github.com/mvanhorn/last30days-skill",
        "~/.claude/skills/last30days"
      ],
      "_inferred": true
    }
  }
}

Click the MCP Servers icon in the Cline sidebar, then "Edit Configuration".

~/.codeium/windsurf/mcp_config.json

{
  "mcpServers": {
    "last30days-skill": {
      "command": "git",
      "args": [
        "clone",
        "https://github.com/mvanhorn/last30days-skill",
        "~/.claude/skills/last30days"
      ],
      "_inferred": true
    }
  }
}

Same shape as Claude Desktop. Restart Windsurf to pick up changes.

~/.continue/config.json

{
  "mcpServers": [
    {
      "name": "last30days-skill",
      "command": "git",
      "args": [
        "clone",
        "https://github.com/mvanhorn/last30days-skill",
        "~/.claude/skills/last30days"
      ]
    }
  ]
}

Continue uses an array of server objects rather than a map.

~/.config/zed/settings.json

{
  "context_servers": {
    "last30days-skill": {
      "command": {
        "path": "git",
        "args": [
          "clone",
          "https://github.com/mvanhorn/last30days-skill",
          "~/.claude/skills/last30days"
        ]
      }
    }
  }
}

Add to context_servers. Zed hot-reloads on save.

claude mcp add last30days-skill -- git clone https://github.com/mvanhorn/last30days-skill ~/.claude/skills/last30days

One-liner. Verify with claude mcp list. Remove with claude mcp remove.

Use Cases

Real-world ways to use last30days

What's the current state of <topic> across communities?

👤 Anyone preparing for a meeting, blog post, or investment call ⏱ ~25 min beginner

When to use: You need to walk in with current consensus, not stale impressions.

Prerequisites

Skill installed — git clone https://github.com/mvanhorn/last30days-skill ~/.claude/skills/last30days

Flow

Run the sweep

Use last30days. What's the state of MCP adoption across r/LocalLLaMA, r/ClaudeAI, HN, and YouTube creators in the last 30 days?✓ Copied

→ Per-source summary with quoted highlights
Synthesize

Now write a 200-word synthesis. Quote at least one citation per claim.✓ Copied

→ Synthesis with footnotes / inline links
Drill

What's the most-disagreed-on aspect across communities?✓ Copied

→ Disagreement axis named with quotes from each side

Outcome: A grounded brief you can defend in a real meeting.

Pitfalls

X / Twitter access is unreliable since the API changes — Skill falls back to nitter mirrors and HN/Reddit when X fails — accept partial coverage

Combine with: filesystem

Combine Polymarket odds with discussion sentiment for an event

👤 Forecasters, analysts, anyone trading event outcomes ⏱ ~20 min intermediate

When to use: Polymarket says X but you wonder if discussion is shifting.

Flow

Fetch market

Pull the Polymarket market for 'Will Y happen by Z?' and current odds.✓ Copied

→ Market data + 30-day odds chart description
Check discussion

Now pull discussion on Reddit and X for the same topic in the last 7 days.✓ Copied

→ Sentiment summary by source
Reconcile

Where does discussion sentiment differ from market odds? Is there a credible reason?✓ Copied

→ Reconciliation note with possible drivers

Outcome: An informed take, not a one-source opinion.

Pitfalls

Polymarket market is illiquid → odds noisy — Skill flags volume; ignore signal below threshold

Weekly digest of what people are saying about a competitor

👤 PMs, marketers, founders ⏱ ~15 min beginner

When to use: You want a Monday-morning brief without spending Sunday scrolling.

Prerequisites

Cron / scheduler — schedule the skill weekly

Flow

Configure watchlist

Create a watchlist with company X and Y. Save to /research/watch.json.✓ Copied

→ watch.json written
Run weekly

Run the watchlist sweep and save output to /research/weekly/$(date +%V).md.✓ Copied

→ Markdown brief saved

Outcome: Monday brief ready every Monday, no manual scrolling.

Pitfalls

Brief gets too long — Configure max_words per source so digest stays scannable

Combine with: filesystem

Combinations

Pair with other MCPs for X10 leverage

last30days-skill + filesystem

Persist briefs as a research archive

Save this brief to /research/<topic>/$(date +%F).md.✓ Copied

last30days-skill + obsidian-mcp-tools

Drop briefs straight into your Obsidian vault

After synthesis, write to vault under /Research/<topic>/.✓ Copied

Tools

What this MCP exposes

Tool	Inputs	When to call	Cost
research	query, sources[]?, since_days?	Topic sweep	0 (local + free APIs where possible)
synthesize	research_output, target_length?	Write up after research	0
polymarket_lookup	query	Event-betting context	0

Cost & Limits

What this costs to run

API quota: Bound by underlying source rate limits (Reddit's main constraint)
Tokens per call: 5000–20000 per topic depending on depth
Monetary: Free (uses public APIs / scrapers)
Tip: Cap source count to 3–4 if cost is a concern

Security

Permissions, secrets, blast radius

Minimum scopes: filesystem-write

Credential storage: Optional Reddit/X tokens via env

Data egress: Source APIs (reddit.com, hn, etc.)

Outputs include user quotes — review before publishing externally to respect platform ToS

Troubleshooting

Common errors and fixes

X / Twitter returns 401 / 429

X API constraints — skill auto-falls back; or set X_BEARER_TOKEN if you have one

YouTube transcript not available

Some videos disable transcripts — skill skips and notes

Synthesis is generic

Increase research depth, narrow query, or add specific subreddits to the watchlist

Alternatives

last30days vs others

Alternative	When to use it instead	Tradeoff
Manual Perplexity / Grok DeepSearch	You want a one-off, polished UI	No agent integration; not scriptable
uditgoenka/autoresearch	You want goal-directed, iterative research	Autoresearch is iterative; last30days is one-shot multi-source

More

Resources

📖 Read the official README on GitHub

🐙 Browse open issues

🔍 Browse all 400+ MCP servers and Skills