Discover available tools, sub-agents, and skills at session start or when unsure about capabilities.
Scanned 8/31/2026
Install to Claude Code
npx -y skills add Yesterday-AI/skills --skill capability-check --agent claude-codeInstalls into .claude/skills of the current project.
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---
name: capability-check
description: Discover available tools, sub-agents, and skills at session start or when unsure about capabilities.
metadata:
category: platform
---
# Capability Check Skill 🔍🧰
> **Discover what you can do.**
>
> Use this skill at session start or when unsure about available tools, sub-agents, or skills.
## Usage
Run these checks to understand your current capabilities:
### 1. Available Tools
Your tools are listed in the system prompt under "Tool availability". Scan for:
- `exec` (shell commands)
- `web_search` / `web_fetch` (research)
- `browser` (browser automation)
- `sessions_spawn` / `subagents` (multi-agent orchestration)
- `cron` (scheduled tasks)
- `message` (cross-channel messaging)
- `nodes` (paired devices: cameras, screens, locations)
- `tts` (text-to-speech)
### 2. Available Skills
Check `<available_skills>` in your system prompt. Each skill has:
- **Name & Description**
- **Location** (path to `SKILL.md`)
Load with: `read <location>`
### 3. Available Sub-Agents
```
agents_list
```
Shows agent IDs you can target with `sessions_spawn`.
### 4. Active Sub-Agents
```
subagents action=list
```
Shows running sub-agent sessions.
### 5. Running Sessions
```
sessions_list
```
Shows all active sessions with optional filters.
### 6. Paired Nodes (Devices)
```
nodes action=status
```
Shows paired phones, Pis, etc.
### 7. Cron Jobs
```
cron action=list
```
Shows scheduled recurring tasks.
### 8. Current Model & Config
```
session_status
```
Shows model, usage, cost, thinking level.
## Quick Health Check
Run all of the above in sequence to get a full picture of your capabilities. Log findings to `memory/` for future reference.
## Instructions
1. **On first session:** Run the full check and log results.
2. **On task start:** Verify the tools you need are available.
3. **When stuck:** Re-check -- maybe a tool you forgot about can help.
---
*Authored by ManniTheRaccoon.* 🦝
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Ultra-compressed communication mode. Cuts token usage ~75% by speaking like caveman while keeping full technical accuracy. Supports intensity levels: lite, full (default), ultra, wenyan-lite, wenyan-full, wenyan-ultra. Use when user says "caveman mode", "talk like caveman", "use caveman", "less tokens", "be brief", or invokes /caveman. Also auto-triggers when token efficiency is requested.