Low Risk

ascii_art_text

Generate stylized text banners with 322+ fonts

Part of the Textarttools Mcp server.

ascii_art_text is read-only, but an agent in a loop can still rack up calls and cost. PolicyLayer caps every call before it runs. Live in minutes.

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AI agents call ascii_art_text to retrieve information from Textarttools Mcp without modifying any data. This is common in research, monitoring, and reporting workflows where the agent needs context before taking action. Because read operations don't change state, they are generally safe to allow without restrictions -- but you may still want rate limits to control API costs.

Even though ascii_art_text only reads data, uncontrolled read access can leak sensitive information or rack up API costs. An agent caught in a retry loop could make thousands of calls per minute. A rate limit gives you a safety net without blocking legitimate use.

Read-only tools are safe to allow by default. No rate limit needed unless you want to control costs.

policy.json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "ascii_art_text": {}
  }
}

See the full Textarttools Mcp policy for all 7 tools.

Get this rule live on your own Textarttools Mcp server in minutes. PolicyLayer enforces it on every call, before it runs.

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These attack patterns abuse exactly the kind of access ascii_art_text gives an agent. Each links to the full case and the policy that stops it:

Browse the full MCP Attack Database →

Every attack above starts with a tool call. PolicyLayer checks each one against your policy first, so ascii_art_text only ever does what you allow.

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Other read tools across the catalogue. The same approach applies to each: allow, with a rate cap to control cost.

What does the ascii_art_text tool do? +

Generate stylized text banners with 322+ fonts. It is categorised as a Read tool in the Textarttools Mcp MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on ascii_art_text? +

Register the Textarttools MCP server in PolicyLayer and add a rule for ascii_art_text: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Textarttools Mcp. Nothing to install.

What risk level is ascii_art_text? +

ascii_art_text is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit ascii_art_text? +

Yes. Add a rate_limit block to the ascii_art_text rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block ascii_art_text completely? +

Set action: deny in the PolicyLayer policy for ascii_art_text. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides ascii_art_text? +

ascii_art_text is provided by the Textarttools MCP server (humanjesse/textarttools-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Textarttools Mcp tool call.

Deterministic rules across all 7 Textarttools Mcp tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.

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4,600+ MCP servers and 31,000+ tools scanned and risk-classified.

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