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MCP Spotify Server

get_audiobook

Retrieve Spotify catalog information for audiobooks by providing the audiobook ID or URI. Access details like title, author, chapters, and availability in specific markets.

Instructions

Get Spotify catalog information for an audiobook

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
idYesThe Spotify ID or URI for the audiobook
marketNoOptional. An ISO 3166-1 alpha-2 country code

Implementation Reference

  • Core implementation of the get_audiobook tool: extracts ID from URI, calls Spotify API /audiobooks/{id} with market param.
    async getAudiobook(args: AudiobookArgs) {
      const audiobookId = this.extractAudiobookId(args.id);
      const { market } = args;
    
      const params = { market };
      return this.api.makeRequest(
        `/audiobooks/${audiobookId}${this.api.buildQueryString(params)}`
      );
    }
  • src/index.ts:377-392 (registration)
    Registration of the 'get_audiobook' tool in the MCP server's ListTools handler, including schema.
    name: 'get_audiobook',
    description: 'Get Spotify catalog information for an audiobook',
    inputSchema: {
      type: 'object',
      properties: {
        id: {
          type: 'string',
          description: 'The Spotify ID or URI for the audiobook'
        },
        market: {
          type: 'string',
          description: 'Optional. An ISO 3166-1 alpha-2 country code'
        }
      },
      required: ['id']
    },
  • src/index.ts:805-811 (registration)
    Dispatch logic in CallToolRequest handler that invokes the audiobooksHandler.getAudiobook method.
    case 'get_audiobook': {
      const args = this.validateArgs<AudiobookArgs>(request.params.arguments, ['id']);
      const result = await this.audiobooksHandler.getAudiobook(args);
      return {
        content: [{ type: 'text', text: JSON.stringify(result, null, 2) }],
      };
    }
  • TypeScript interface defining the input args for getAudiobook, extending MarketParams.
    export interface AudiobookArgs extends MarketParams {
      id: string;
    }
  • Helper function to normalize audiobook ID from Spotify URI.
    private extractAudiobookId(id: string): string {
      return id.startsWith('spotify:audiobook:') ? id.split(':')[2] : id;
    }
Behavior2/5

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It only states the action without detailing permissions, rate limits, response format, or error handling. This is inadequate for a tool that likely involves API calls and data retrieval.

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?

The description is a single, efficient sentence with no wasted words. It's front-loaded with the core purpose, making it easy to parse quickly.

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

Completeness2/5

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

Given the lack of annotations and output schema, the description is incomplete. It doesn't explain what 'catalog information' includes, how results are structured, or any behavioral aspects like authentication needs, leaving significant gaps for the agent.

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?

The input schema has 100% description coverage, so the baseline is 3. The description doesn't add any parameter-specific information beyond what's in the schema, such as examples or constraints, but it doesn't need to compensate for gaps.

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?

The description clearly states the action ('Get') and resource ('Spotify catalog information for an audiobook'), making the purpose evident. However, it doesn't explicitly differentiate from sibling tools like 'get_multiple_audiobooks' or 'get_audiobook_chapters', which would be needed for a score of 5.

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 like 'get_multiple_audiobooks' or 'get_audiobook_chapters'. The description lacks context about use cases or prerequisites, offering minimal direction for the agent.

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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