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search-spines-underground

Search the Spines Underground catalog by keyword to find curated products in poetry, philosophy, music theory, and more. Matches product names, descriptions, and shop names.

Instructions

Search Spine's Underground catalog by keyword. Searches product names, descriptions, and shop names.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
queryYesSearch term (e.g. "poetry", "philosophy", "music", "memory")

Implementation Reference

  • Handler for 'search-spines-underground' tool. Fetches the full catalog, filters products by keyword match across name, description, shop, agent_summary, and id fields, and returns matching results.
    case 'search-spines-underground': {
      const catalog = await fetchJSON('/catalog');
      const q = (args.query || '').toLowerCase();
      const matches = catalog.catalog.filter(p =>
        p.name.toLowerCase().includes(q) ||
        p.description.toLowerCase().includes(q) ||
        p.shop.toLowerCase().includes(q) ||
        p.agent_summary.toLowerCase().includes(q) ||
        p.id.toLowerCase().includes(q)
      );
      return {
        content: [{
          type: 'text',
          text: JSON.stringify({
            query: args.query,
            results: matches,
            total: matches.length,
            full_catalog: `${API_BASE}/catalog`,
          }, null, 2),
        }],
      };
    }
  • index.js:88-100 (registration)
    Tool registration (schema definition) for 'search-spines-underground' in the ListToolsRequestSchema handler. Lists the tool name, description, and input schema requiring a 'query' string parameter.
      name: 'search-spines-underground',
      description: "Search Spine's Underground catalog by keyword. Searches product names, descriptions, and shop names.",
      inputSchema: {
        type: 'object',
        properties: {
          query: {
            type: 'string',
            description: 'Search term (e.g. "poetry", "philosophy", "music", "memory")',
          },
        },
        required: ['query'],
      },
    },
  • Helper function fetchJSON used by the handler to fetch the catalog from the API. Handles 402 payment responses specially.
    async function fetchJSON(path) {
      const res = await fetch(`${API_BASE}${path}`);
      if (res.status === 402) {
        const paymentHeader = res.headers.get('PAYMENT-REQUIRED');
        return {
          status: 402,
          message: 'Payment required. This product costs USDC on Base via x402 protocol.',
          payment_challenge: paymentHeader,
          instructions: 'Decode the PAYMENT-REQUIRED header (base64 JSON) to get payment details. Sign a USDC transfer and re-request with PAYMENT-SIGNATURE header.',
        };
      }
      return res.json();
    }
Behavior2/5

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

No annotations are present, so the description must convey behavioral traits. It implies a read operation but doesn't explicitly state safety, permissions, or result characteristics. Minimal beyond the obvious.

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?

Two concise sentences directly convey the tool's purpose without extraneous information. Front-loaded with action and resource.

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?

Given the simple input schema (one required string) and no output schema, the description adequately explains what is being searched but omits details like result format, pagination, or rate limits. It is minimally complete.

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%, so the parameter is already well-defined in the schema. The description adds example search terms, which provides some additional context, but no further semantic value beyond the schema.

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

Purpose5/5

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

The description clearly states the verb 'Search', the resource 'Spine's Underground catalog', and the scope 'by keyword', specifying the fields searched (product names, descriptions, shop names). This distinguishes it from sibling tools like browse-spines-underground.

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 guidance is provided on when to use this tool versus alternatives, nor any when-not or prerequisite conditions. Sibling tools are listed but not compared.

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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