10 AI agent skills to install tonight so your agent stops wasting a cent

Your agent reads every web page in full. Navigation, footer, cookie banner, ads. All of it stays in your conversation for the next turn. You pay for the same content 40 times.

The good news: 10 free skills fix this tonight. No complex setup. No budget. Just a markdown file to copy.

The 3 skills that cut costs

Before adding capabilities, stop bleeding money. These three skills reduce the tokens consumed at every interaction.

1. Defuddle — the web page cleaner

When your agent reads a web page, it gets raw HTML. Navigation, footer, cookie banner, ads, tracking scripts, everything is included. Defuddle transforms that into clean markdown. Zero config, it's an MCP server that installs in one line.

Concretely: your 15,000-token page becomes 3,000 tokens. Same content, a fraction of the cost.

Why it matters: every page your agent explores consumes tokens. By cleaning the HTML, you reduce costs by 60 to 80% on each page read.

2. Caveman — ultra-compressed output mode

Caveman is a local proxy that compresses your agent's outputs. -65% output tokens, -33% input. Benchmarks on React bugs show reductions from 1,180 tokens to 159 tokens for the same diagnosis.

The principle: instead of long explanations, your agent produces short, structured responses. No information loss, just noise eliminated.

Cost: free, MIT. Compatible with Claude, Codex, Gemini, and 30+ other agents.

3. Codebase Memory — your project's memory

This MCP server indexes your project as a knowledge graph. Instead of reading files one by one to understand the architecture, your agent queries a map. Result: -95% tokens on code exploration.

It's like going from a paper map you unfold every time to a GPS that already knows the route.

The 4 skills that add new capabilities

Now that you've cut costs, add skills your agent doesn't have yet.

4. Humanizer — write like a human

This skill removes AI writing traces from any text. It scrapes the Wikipedia page "signs of AI-generated writing" and updates its rules automatically.

Usage: invoke it only at the very end of the process, once. Otherwise you pay to scan 29.6 KB of rules every turn.

Result: text that no longer sounds like ChatGPT. Useful for emails, LinkedIn posts, sales pages.

5. Agent Reach — 15 platforms, zero API fees

X, Reddit, GitHub, YouTube, LinkedIn, Bilibili, XiaoHongShu, and 8 other platforms. Zero API cost. The skill handles multi-backend routing with automatic failover.

If a backend crashes, it switches to the next. Diagnostic command: agent-reach doctor to verify everything works.

Why it's powerful: your agent can now search for information, publish content, and interact across 15 different platforms. Before, you needed an API key for each one.

6. Marketing Skills — 49 marketing skills

Not a tool, judgment. 49 skills covering SEO, CRO, copywriting, ads, buyer psychology, pricing, email, analytics. Each skill references the others to build shared context.

The product-marketing skill is the foundation. Every other skill consults it to understand your product before acting.

45,000+ stars on GitHub. The most complete pack to turn an AI agent into a marketing analyst.

7. Compozio — 1,000+ connected tools

MCP gateway connecting Gmail, Slack, Notion, HubSpot, Salesforce, and 1,000 other services. Seven meta-tools to orchestrate: create, read, update, delete, search, execute, compose.

OAuth in one click. No API key juggling. You connect, done.

The gain: instead of configuring an API for each service, you have a single entry point. Your agent can read your emails, update your CRM, create a task in Notion, all in the same conversation.

The 2 multi-agent skills

For complex projects, these two skills transform your solo agent into a coordinated team.

8. Open Montage — agentic video production

Open source, 12 pipelines, 100+ tools, 700+ skills. The full workflow: brief → research → script → scene plan → assets → editing → render.

The key principle: the agent asks for your approval before each generation step. You keep control, the agent does the repetitive work.

Use case: create a marketing video from a text brief, going through script research, storyboarding, image generation, and final editing.

9. Oh My Claude (omc-teams) — team orchestration

Transforms a session into a coordinated team. Decomposes tasks, assigns specialized sub-agents, executes in parallel via tmux.

Supports Claude, Codex, Gemini. The lead orchestrator analyzes the code, creates a dependency graph, spawns workers in parallel, and verifies results.

The gain: instead of doing 10 things sequentially, you do 5 in parallel. Processing time divides by the number of workers.

10. Superpowers — the complete framework

273,000+ stars on GitHub. The most popular skill in the ecosystem. It's not just a tool, it's a complete software development methodology: brainstorming → plan → subagent-driven execution with two-stage review.

Superpowers also includes guides for Claude, Codex, and Cursor. It's the ideal entry point if you want to structure how your agent works.

Recommended installation order

Don't install everything at once. Here's the order that maximizes immediate impact:

Tonight: Defuddle + Caveman + Codebase Memory (cost reduction)
This week: Humanizer + Agent Reach (new capabilities)
Next month: Marketing Skills + Compozio (marketing + integrations)
For complex projects: Open Montage + Oh My Claude + Superpowers

The takeaway

Skills are free to install. What costs money is leaving the good ones under 40 that you never use.

Start with the first three. You'll feel the difference today: fewer tokens consumed, shorter responses, and an agent that understands your project without having to re-read everything.

Then add capabilities as you need them. No need to install everything at once.

The gap between a basic AI agent and an optimized one has never been easier to bridge.

Optimize your AI agents with an Externalized AI Direction

These 10 skills are the starting point. But integrating them into a real workflow is another exercise.

Through our Externalized AI Direction, we deploy and configure these tools for your company:

Audit your current AI agent stack and identify quick wins.
Install and configure relevant skills for your use case.
Train your team to use these tools daily.
Continuous optimization of costs and performance.

Book a free 45-minute audit to identify the skills that will transform your productivity.