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paladini

devutils-mcp-server

html_encode

Convert special characters in text to HTML entities for safe web display and proper browser rendering.

Instructions

Encode special characters in a string to HTML entities.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
inputYesThe string to HTML-encode

Implementation Reference

  • The handler for the html_encode tool is defined within the server.tool registration call in src/tools/encoding.ts. It takes a string input and replaces special characters with their corresponding HTML entities.
    server.tool(
      "html_encode",
      "Encode special characters in a string to HTML entities.",
      { input: z.string().describe("The string to HTML-encode") },
      async ({ input }) => {
        const encoded = input
          .replace(/&/g, "&")
          .replace(/</g, "<")
          .replace(/>/g, ">")
          .replace(/"/g, """)
          .replace(/'/g, "'");
        return { content: [{ type: "text" as const, text: encoded }] };
      }
    );
Behavior3/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations provided, so description carries full burden. It indicates only 'special characters' are encoded (not all), which is useful behavioral context. However, it omits that the operation is reversible via html_decode, idempotent, or details about which specific entities are generated.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

Single sentence, front-loaded with the action ('Encode'), and contains no filler. Efficiently conveys the core transformation without repetition or verbosity.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a single-parameter utility with no annotations or output schema, the description covers the basic transformation. However, it lacks mention of non-special characters passing through unchanged, security context (XSS prevention), or the relationship to html_decode, which would be helpful for agent selection.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100% with the 'input' parameter fully described as 'The string to HTML-encode'. The tool description provides minimal additional semantics beyond the schema (implying the string may contain special characters), so baseline 3 is appropriate when schema does the heavy lifting.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

States a specific action (encode), target (special characters), and format (HTML entities) clearly. However, it does not explicitly distinguish from sibling tool html_decode or clarify when to use this versus url_encode (which handles different special characters).

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

No explicit guidance on when to use this tool versus alternatives like url_encode, or whether to prefer this over html_decode based on context (e.g., preparing content for HTML rendering). No safety guidance (e.g., XSS prevention use case).

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

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