Skip to main content
Glama
CloudWaddie

OSINT MCP Server

dns_lookup_passive

Retrieve passive DNS records from Robtex to analyze domain history and infrastructure without sending queries to the target domain.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
domainYesDomain name to lookup passive DNS records from Robtex

Implementation Reference

  • The implementation of the dns_lookup_passive tool's underlying logic, which calls the Robtex API to fetch passive DNS records.
    async getDns(domain: string): Promise<DnsResult> {
      try {
        const data = await this.fetch<any>(`pdns/forward/${domain}`, {
          method: "GET",
        });
    
        const records = data.map((r: any) => ({
          type: r.rrtype,
          value: r.rrdata,
        }));
    
        return DnsResultSchema.parse({
          domain,
          records,
        });
      } catch (error) {
        if (error instanceof McpError) throw error;
        throw new McpError(
          ErrorCode.InternalError,
          `Robtex DNS error: ${(error as Error).message}`
        );
      }
    }
  • src/index.ts:134-143 (registration)
    Registration of the dns_lookup_passive tool in the MCP server.
    server.tool(
      "dns_lookup_passive",
      { domain: z.string().describe("Domain name to lookup passive DNS records from Robtex") },
      async ({ domain }) => {
        const result = await robtexClient.getDns(domain);
        return {
          content: [{ type: "text", text: JSON.stringify(result, null, 2) }],
        };
      }
    );
Behavior1/5

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

Tool has no description.

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

Conciseness1/5

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

Tool has no description.

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

Completeness1/5

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

Tool has no description.

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

Parameters1/5

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

Tool has no description.

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

Purpose1/5

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

Tool has no description.

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

Usage Guidelines1/5

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

Tool has no description.

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

Install Server

Other Tools

Latest Blog Posts

MCP directory API

We provide all the information about MCP servers via our MCP API.

curl -X GET 'https://glama.ai/api/mcp/v1/servers/CloudWaddie/osint-mcp'

If you have feedback or need assistance with the MCP directory API, please join our Discord server