# Character Counter

> Use this tool when you need to accurately count character occurrences in text for validation, formatting, or analysis tasks. It solves problems such as enforcing character limits and detecting unusual patterns by providing precise frequency outputs. Input your text and receive a detailed character count, making it ideal for tasks that require meticulous text analysis.

Canonical page: https://skillsregistry.net/skills/isaac-theori-vulnerable-mcp-server  
JSON: https://api.skillsregistry.net/v1/skills/isaac-theori-vulnerable-mcp-server

## Description

Count occurrences of any character in text with precision. Quickly check frequency for validation, formatting, or analysis tasks. Save time when enforcing limits or detecting unusual patterns.

## Trust

- **Trust score (0–1):** 0.88
- **Verification tier:** verified
- **Last scanned:** 2026-09-19

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** container
- **Runtime environment:** vm
- **Category:** productivity
- **Updated:** 2026-09-19

## Source

- **Source listing:** [Smithery](https://smithery.ai/server/Isaac-theori/vulnerable-mcp-server)
- **Repository:** <https://github.com/Isaac-theori/Vulnerable-MCP-server>

## Use it

Resolve this record through the SkillsRegistry MCP server (no auth, read-only):

```
claude mcp add --transport http --scope user skillsregistry https://api.skillsregistry.net/mcp
```

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_skill",
    "arguments": {
      "slug": "isaac-theori-vulnerable-mcp-server"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/isaac-theori-vulnerable-mcp-server` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/isaac-theori-vulnerable-mcp-server/pull`

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SkillsRegistry indexes agent skills from public registries and GitHub. Skills we have analysed are scanned with Circle-IR and scored on six dimensions; each listing states its scan coverage. More: https://skillsregistry.net/llms.txt